Merge branch 'main' of https://git.innov.energy/Innovenergy/git_trunk

csharp/App/Backend/Backend.csproj

@@ -22,21 +22,16 @@
     </ItemGroup>
 
   
-
     <ItemGroup>
       <ProjectReference Include="../../Lib/Utils/Utils.csproj" />
     </ItemGroup>
 
-  
-
     <ItemGroup>
       <Folder Include="Resources" />
     </ItemGroup>
 
-  
-
     <ItemGroup>
-      <None Update="Resources\s3cmd.py">
+      <None Update="Resources/s3cmd.py">
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       </None>
     </ItemGroup>

csharp/App/Backend/Controllers/Controller.cs

@@ -16,7 +16,7 @@ public class Controller : ControllerBase
     [HttpPost(nameof(Login))]
     public ActionResult<Session> Login(String username, String password)
     {
-        var user = Db.GetUserByEmail(username);
+        var user = Db.GetUserByName(username);
 
         if (user is null || !user.VerifyPassword(password))
             return Unauthorized();
@@ -162,14 +162,19 @@ public class Controller : ControllerBase
     
     
     [HttpGet(nameof(GetAllFoldersAndInstallations))]
-    public ActionResult<IEnumerable<TreeNode>> GetAllFoldersAndInstallations(Token authToken)
+    public ActionResult<IEnumerable<Object>> GetAllFoldersAndInstallations(Token authToken)
     {
         var user = Db.GetSession(authToken)?.User;
 
         if (user is null)
             return Unauthorized();
+
+        var foldersAndInstallations = user
+                                     .AccessibleFoldersAndInstallations()
+                                     .OfType<Object>();  // Important! JSON serializer must see Objects otherwise
+                                                         // it will just serialize the members of TreeNode %&@#!!!
         
-        return new (user.AccessibleFoldersAndInstallations());
+        return new (foldersAndInstallations);
     }
     
 

csharp/App/Backend/DataTypes/Methods/Folder.cs

@@ -68,36 +68,17 @@ public static class FolderMethods
 
     public static Folder? Parent(this Folder folder)
     {
-        return IsAbsoluteRoot(folder)    
+        return IsRoot(folder)    
              ? null 
              : Db.GetFolderById(folder.ParentId);
     }
 
-    public static Boolean IsAbsoluteRoot(this Folder folder)
+    public static Boolean IsRoot(this Folder folder)
     { 
-        return folder.ParentId == 0; // root has ParentId 0 by definition
+        return folder.ParentId <= 0
+            && Db.GetFolderById(folder.Id)?.Id == 0; // might have been 0 because it is a relative root 
     }
     
-    public static Boolean IsRelativeRoot(this Folder folder)
-    { 
-        return folder.ParentId < 0;  // TODO
-    }
-
-    public static Boolean WasMoved(this Folder folder)
-    {
-        if (folder.IsRelativeRoot())
-            return false;
-
-        var existingFolder = Db.GetFolderById(folder.Id);
-        
-        return existingFolder is not null 
-            && existingFolder.ParentId != folder.ParentId;
-    }
-
-    public static Boolean Exists(this Folder folder)
-    {
-        return Db.Folders.Any(f => f.Id == folder.Id);
-    }
    
 }
 

csharp/App/Backend/DataTypes/Methods/Installation.cs

@@ -76,21 +76,20 @@ public static class InstallationMethods
     
     public static Folder? Parent(this Installation installation)
     {
-        return installation.IsRelativeRoot() 
+        if (installation.ParentId <= 0) // relative root
-             ? null 
+        {
-             : Db.GetFolderById(installation.ParentId);
+            var i = Db.GetInstallationById(installation.Id);
+            if (i is null)
+                return null;
+
+            installation = i;
+        }
+        
+        return Db.GetFolderById(installation.ParentId);
     }
     
-    public static Boolean IsRelativeRoot(this Installation i)
-    { 
-        return i.ParentId < 0; 
-    }
-
     public static Boolean WasMoved(this Installation installation)
     {
-        if (installation.IsRelativeRoot())
-            return false;
-
         var existingInstallation = Db.GetInstallationById(installation.Id);
 
         return existingInstallation is not null

csharp/App/Backend/DataTypes/Methods/Session.cs

@@ -1,5 +1,6 @@
 using InnovEnergy.App.Backend.Database;
 using InnovEnergy.App.Backend.Relations;
+using InnovEnergy.Lib.Utils;
 
 namespace InnovEnergy.App.Backend.DataTypes.Methods;
 
@@ -13,20 +14,23 @@ public static class SessionMethods
             && folder is not null 
             && user.HasWriteAccess
             && user.HasAccessTo(folder.Parent()) 
-            && Db.Create(folder)               
+            && Db.Create(folder)                // TODO: these two in a transaction
             && Db.Create(new FolderAccess { UserId = user.Id, FolderId = folder.Id });
     }
 
     public static Boolean Update(this Session? session, Folder? folder)
     {
-        var user = session?.User;
+        var user     = session?.User;
+        var original = Db.GetFolderById(folder?.Id);
         
         return user is not null
             && folder is not null 
+            && original is not null
             && user.HasWriteAccess 
             && user.HasAccessTo(folder)
-            && (folder.IsRelativeRoot() || user.HasAccessTo(folder.Parent())) 
+            && folder
-            && Db.Update(folder);
+              .WithParentOf(original)   // prevent moving
+              .Apply(Db.Update);
     }
    
     public static Boolean Delete(this Session? session, Folder? folder)
@@ -49,24 +53,27 @@ public static class SessionMethods
             && installation is not null
             && user.HasWriteAccess
             && user.HasAccessTo(installation.Parent())
-            && Db.Create(installation)
+            && Db.Create(installation)           // TODO: these two in a transaction
             && Db.Create(new InstallationAccess { UserId = user.Id, InstallationId = installation.Id })
             && await installation.CreateBucket() 
             && await installation.RenewS3BucketUrl();   // generation of access _after_ generation of  
-                                                          // bucket to prevent "zombie" access-rights.   
+                                                        // bucket to prevent "zombie" access-rights.   
     }
 
     public static Boolean Update(this Session? session, Installation? installation)
     {
         var user = session?.User;
+
+        var original = Db.GetInstallationById(installation?.Id);
         
         return user is not null
             && installation is not null
+            && original is not null
             && user.HasWriteAccess
-            && installation.Exists()
             && user.HasAccessTo(installation)
-            && (installation.IsRelativeRoot() || user.HasAccessTo(installation.Parent()))  // TODO: triple check this
+            && installation
-            && Db.Update(installation);
+              .WithParentOf(original)  // prevent moving
+              .Apply(Db.Update); 
     }
 
     public static Boolean Delete(this Session? session, Installation? installation)
@@ -77,37 +84,37 @@ public static class SessionMethods
             && installation is not null
             && user.HasWriteAccess
             && user.HasAccessTo(installation)
-       //   && installation.DeleteBucket().Result  // TODO: await?
+       //   && installation.DeleteBucket().Result  // TODO
             && Db.Delete(installation);
     }
     
     public static Boolean Create(this Session? session, User? newUser)
     {
         var sessionUser = session?.User;
-
-        if (sessionUser is null || newUser is null || !sessionUser.HasWriteAccess)
-            return false;
         
-        newUser.ParentId = sessionUser.Id; // Important!
+        return sessionUser is not null 
-
+            && newUser is not null 
-        return Db.Create(newUser);
+            && sessionUser.HasWriteAccess 
+            && newUser
+              .WithParent(sessionUser)
+              .Do(() => newUser.Password = newUser.SaltAndHashPassword(newUser.Password))
+              .Apply(Db.Create);
     }
 
     public static Boolean Update(this Session? session, User? editedUser)
     {
         var sessionUser = session?.User;
-        if (editedUser == null || sessionUser == null) return false;
+        var originalUser = Db.GetUserById(editedUser?.Id);
         
-        // TODO: make specific method for changing user account settings like pwd   
+        return editedUser is not null 
-        // Password change is only allowed for oneself
+            && sessionUser is not null
-        editedUser.Password = editedUser.Id != sessionUser.Id 
+            && originalUser is not null
-                            ? sessionUser.Password 
+            && sessionUser.HasWriteAccess 
-                            : sessionUser.SaltAndHashPassword(editedUser.Password);
+            && sessionUser.HasAccessTo(editedUser)
-
+            && editedUser
-        return sessionUser.HasWriteAccess 
+              .WithParentOf(originalUser)     // prevent moving
-               && sessionUser.HasAccessTo(editedUser)
+              .WithPasswordOf(originalUser)   
-               && (editedUser.IsRelativeRoot() || sessionUser.HasAccessTo(editedUser.Parent()) || editedUser.Id == sessionUser.Id) // TODO: triple check this
+              .Apply(Db.Update);
-               && Db.Update(editedUser);
     }
    
     public static Boolean Delete(this Session? session, User? userToDelete)
@@ -117,7 +124,7 @@ public static class SessionMethods
         return sessionUser is not null
             && userToDelete is not null
             && sessionUser.HasWriteAccess
-            && sessionUser.HasAccessTo(userToDelete)   //   TODO: && user.HasAccessTo(installation.Parent()) ??? 
+            && sessionUser.HasAccessTo(userToDelete)    
             && Db.Delete(userToDelete);
     }
 
@@ -127,8 +134,8 @@ public static class SessionMethods
         var sessionUser = session?.User;
 
         return sessionUser is not null
-            && user is not null
             && installation is not null
+            && user is not null
             && user.IsDescendantOf(sessionUser)
             && sessionUser.HasAccessTo(installation)
             && !user.HasAccessTo(installation)
@@ -140,8 +147,8 @@ public static class SessionMethods
         var sessionUser = session?.User;
 
         return sessionUser is not null
-            && user is not null
             && folder is not null
+            && user is not null
             && user.IsDescendantOf(sessionUser)
             && sessionUser.HasAccessTo(folder)
             && !user.HasAccessTo(folder)
@@ -153,8 +160,8 @@ public static class SessionMethods
         var sessionUser = session?.User;
         
         return sessionUser is not null
-            && user is not null
             && installation is not null
+            && user is not null
             && user.IsDescendantOf(sessionUser)
             && sessionUser.HasAccessTo(installation)
             && user.HasAccessTo(installation)
@@ -166,8 +173,8 @@ public static class SessionMethods
         var sessionUser = session?.User;
         
         return sessionUser is not null
-            && user is not null
             && folder is not null
+            && user is not null
             && user.IsDescendantOf(sessionUser)
             && sessionUser.HasAccessTo(folder)
             && user.HasAccessTo(folder)

csharp/App/Backend/DataTypes/Methods/TreeNode.cs

@@ -0,0 +1,24 @@
+namespace InnovEnergy.App.Backend.DataTypes.Methods;
+
+public static class TreeNodeMethods
+{
+    
+    public static T WithParentOf<T>(this T treeNode, T other) where T: TreeNode
+    {
+        treeNode.ParentId = other.ParentId;
+        return treeNode;
+    }
+    
+    public static T WithParent<T>(this T treeNode, T other) where T: TreeNode
+    {
+        treeNode.ParentId = other.Id;
+        return treeNode;
+    }
+    
+    public static T HideParent<T>(this T treeNode) where T: TreeNode
+    {
+        treeNode.ParentId = 0;
+        return treeNode;
+    }
+    
+}

csharp/App/Backend/DataTypes/Methods/User.cs

@@ -34,7 +34,7 @@ public static class UserMethods
         // to a child folder of a folder he has already access to
         // TODO shouldn't we prevent doubling permissions? -K"
         // TODO yes we should -ig (still TODO)
-        // however we should leave the distinct, defensive programming...
+        // however we should still leave the distinct, defensive programming...
     }
 
     public static IEnumerable<TreeNode> AccessibleFoldersAndInstallations(this User user)
@@ -51,9 +51,9 @@ public static class UserMethods
               .InstallationAccess
               .Where(r => r.UserId == user.Id)
               .Select(r => r.InstallationId)
-              .Select(Db.GetInstallationById)
+              .Select(i => Db.GetInstallationById(i))
               .NotNull()
-              .Do(i => i.ParentId = 0); // hide inaccessible parents from calling user
+              .Do(i => i.HideParent()); // hide inaccessible parents from calling user
     }
 
     public static IEnumerable<Folder> DirectlyAccessibleFolders(this User user)
@@ -62,9 +62,9 @@ public static class UserMethods
               .FolderAccess
               .Where(r => r.UserId == user.Id)
               .Select(r => r.FolderId)
-              .Select(Db.GetFolderById)
+              .Select(i => Db.GetFolderById(i))
               .NotNull()
-              .Do(i => i.ParentId = 0); // hide inaccessible parents from calling user;
+              .Do(f => f.HideParent()); // hide inaccessible parents from calling user;
     }
 
     public static IEnumerable<User> ChildUsers(this User parent)
@@ -112,21 +112,17 @@ public static class UserMethods
     
     public static User? Parent(this User u)
     {
-        return u.IsAbsoluteRoot()
+        return u.IsRoot()
              ? null
              : Db.GetUserById(u.ParentId);
     }
 
-    public static Boolean IsAbsoluteRoot(this User u)
+    public static Boolean IsRoot(this User user)
-    {
+    { 
-        return u.ParentId == 0; 
+        return user.ParentId <= 0
+            && Db.GetUserById(user.Id)?.Id == 0; // might have been 0 because it is a relative root 
     }
     
-    public static Boolean IsRelativeRoot(this User u)
-    {
-        return u.ParentId < 0; 
-    }
-
     public static Boolean HasDirectAccessTo(this User user, Folder folder)
     {
         return Db
@@ -174,12 +170,6 @@ public static class UserMethods
               .Contains(user);
     }
     
-    public static Boolean IsRelativeRoot(this User user,  Installation i)
-    { 
-        // TODO: determine not by id but by accessibility
-        return i.ParentId < 0; 
-    }
-
     public static String Salt(this User user)
     {
         // + id          => salt unique per user
@@ -188,6 +178,14 @@ public static class UserMethods
         return $"{user.Id}InnovEnergy";   
     }
     
+    public static User WithPasswordOf(this User user, User other)
+    {
+        user.Password = other.Password;
+        return user;
+    }
+
+    
+    
     
     // TODO?
     private static Boolean IsValidEmail(String email)

csharp/App/Backend/DataTypes/TreeNode.cs

@@ -5,9 +5,9 @@ namespace InnovEnergy.App.Backend.DataTypes;
 public abstract partial class TreeNode
 {
     [PrimaryKey, AutoIncrement]
-    public Int64  Id          { get; set; }
+    public         Int64  Id          { get; set; }
-    public String Name        { get; set; } = "";
+    public virtual String Name        { get; set; } = "";  // overridden by User (unique)
-    public String Information { get; set; } = "";  // unstructured random info
+    public         String Information { get; set; } = "";  // unstructured random info
 
     [Indexed] // parent/child relation
     public Int64  ParentId { get; set; }    

csharp/App/Backend/DataTypes/User.cs

@@ -4,11 +4,13 @@ namespace InnovEnergy.App.Backend.DataTypes;
 
 public class User : TreeNode
 {
-    [Indexed]                   
     public String  Email          { get; set; } = null!;
     public Boolean HasWriteAccess { get; set; } = false;
     public String  Language       { get; set; } = null!;
     public String  Password       { get; set; } = null!;
-    
+
+    [Unique]
+    public override String Name { get; set; } = null!;
+
     // TODO: must reset pwd
 }

csharp/App/Backend/Database/Create.cs

@@ -1,5 +1,4 @@
 using InnovEnergy.App.Backend.DataTypes;
-using InnovEnergy.App.Backend.DataTypes.Methods;
 using InnovEnergy.App.Backend.Relations;
 
 
@@ -21,11 +20,6 @@ public static partial class Db
     
     public static Boolean Create(User user)
     {
-        if (GetUserByEmail(user.Email) is not null) 
-            return false;
-
-        user.Password = user.SaltAndHashPassword(user.Password);
-        
         return Connection.Insert(user) > 0;
     }
    

csharp/App/Backend/Database/Db.cs

@@ -1,3 +1,4 @@
+using System.Reactive.Concurrency;
 using System.Reactive.Linq;
 using InnovEnergy.App.Backend.DataTypes;
 using InnovEnergy.App.Backend.DataTypes.Methods;
@@ -15,10 +16,10 @@ public static partial class Db
 
     private static SQLiteConnection Connection { get; } = new SQLiteConnection(DbPath);
 
-    public static TableQuery<Session>           Sessions          => Connection.Table<Session>();
+    public static TableQuery<Session>            Sessions           => Connection.Table<Session>();
-    public static TableQuery<Folder>            Folders           => Connection.Table<Folder>();
+    public static TableQuery<Folder>             Folders            => Connection.Table<Folder>();
-    public static TableQuery<Installation>      Installations     => Connection.Table<Installation>();
+    public static TableQuery<Installation>       Installations      => Connection.Table<Installation>();
-    public static TableQuery<User>              Users             => Connection.Table<User>();
+    public static TableQuery<User>               Users              => Connection.Table<User>();
     public static TableQuery<FolderAccess>       FolderAccess       => Connection.Table<FolderAccess>();
     public static TableQuery<InstallationAccess> InstallationAccess => Connection.Table<InstallationAccess>();
 
@@ -38,9 +39,10 @@ public static partial class Db
         });
 
         Observable.Interval(TimeSpan.FromDays(0.5))
-                  .StartWith(0) // Do it right away (on startup)
+                  .StartWith(0)         // Do it right away (on startup)      
+                  .ObserveOn(TaskPoolScheduler.Default)
                   .SelectMany(Cleanup)
-                  .Subscribe();         // and then daily
+                  .Subscribe();
     }
 
     

csharp/App/Backend/Database/Read.cs

@@ -7,13 +7,13 @@ namespace InnovEnergy.App.Backend.Database;
 
 public static partial class Db 
 {
-    public static Folder? GetFolderById(Int64 id)
+    public static Folder? GetFolderById(Int64? id)
     {
         return Folders
               .FirstOrDefault(f => f.Id == id);
     }
         
-    public static Installation? GetInstallationById(Int64 id)
+    public static Installation? GetInstallationById(Int64? id)
     {
         return Installations
               .FirstOrDefault(i => i.Id == id);
@@ -25,22 +25,10 @@ public static partial class Db
               .FirstOrDefault(u => u.Id == id);
     }
     
-    // private!!
+    public static User? GetUserByName(String userName)
-    private static Session? GetSessionById(Int64 id)
-    {
-        #pragma warning disable CS0618
-  
-        return Sessions
-              .FirstOrDefault(u => u.Id == id);
-        
-        #pragma warning restore CS0618
-    }
-    
-    
-    public static User? GetUserByEmail(String email)
     {
         return Users
-              .FirstOrDefault(u => u.Email == email);
+              .FirstOrDefault(u => u.Name == userName);
     }
 
     public static Session? GetSession(String token)
@@ -62,25 +50,4 @@ public static partial class Db
 
         return session;
     }
-    
-    public static User? GetUserBySessionToken(String token)
-    {
-        var session = Sessions
-                     .FirstOrDefault(s => s.Token == token);
-        
-        // cannot user session.Expired in the DB query above.
-        // It does not exist in the db (IgnoreAttribute) 
-
-        if (session is null)
-            return null;
-
-        if (!session.Valid)
-        {
-            Delete(session);
-            return null;
-        }
-
-        return GetUserById(session.UserId);
-    }
-
 }

csharp/App/Backend/Database/Update.cs

@@ -1,7 +1,4 @@
 using InnovEnergy.App.Backend.DataTypes;
-using InnovEnergy.App.Backend.DataTypes.Methods;
-using InnovEnergy.App.Backend.Relations;
-
 
 namespace InnovEnergy.App.Backend.Database;
 
@@ -10,54 +7,24 @@ public static partial class Db
 {
     public static Boolean Update(Folder folder)
     {
-        if (folder.IsRelativeRoot()) // TODO: triple check
+        return Connection.Update(folder) > 0;
-        {
-            var original = GetFolderById(folder.Id);
-            if (original is null)
-                return false;
-
-            folder.ParentId = original.ParentId;
-        }
-
-        return Connection.InsertOrReplace(folder) > 0;
     }
 
     public static Boolean Update(Installation installation)
     {
-        if (installation.IsRelativeRoot())  // TODO: triple check
+        return Connection.Update(installation) > 0;
-        {
-            var original = GetInstallationById(installation.Id);
-            if (original is null)
-                return false;
-
-            installation.ParentId = original.ParentId;
-        }
-
-        return Connection.InsertOrReplace(installation) > 0;
     }
     
-    
     public static Boolean Update(User user)
     {
         var originalUser = GetUserById(user.Id);
 
         return originalUser is not null 
-               && user.Id       == originalUser.Id        // these columns must not be modified! 
+            && user.ParentId == originalUser.ParentId   // these columns must not be modified!
-               && user.ParentId == originalUser.ParentId  
+            && user.Name     == originalUser.Name
-               && user.Email    == originalUser.Email
+            && Connection.Update(user) > 0;
-               && Connection.InsertOrReplace(user) > 0;
     }
     
-    public static Boolean Update(this Session session)
+ 
-    {
-        #pragma warning disable CS0618
-        var originalSession = GetSessionById(session.Id);
-        #pragma warning restore CS0618
-
-        return originalSession is not null
-            && session.Token  == originalSession.Token // these columns must not be modified!
-            && session.UserId == originalSession.UserId
-            && Connection.InsertOrReplace(session) > 0;
-    }
 
 }

csharp/App/Backend/HeaderFilter.cs

@@ -1,24 +0,0 @@
-using Microsoft.OpenApi.Models;
-using Swashbuckle.AspNetCore.SwaggerGen;
-
-namespace InnovEnergy.App.Backend;
-
-/// <summary>
-/// This is for convenient testing! Todo throw me out?
-/// Operation filter to add the requirement of the custom header
-/// </summary>
-public class HeaderFilter : IOperationFilter
-{
-    public void Apply(OpenApiOperation operation, OperationFilterContext context)
-    {
-        operation.Parameters ??= new List<OpenApiParameter>();
-
-        operation.Parameters.Add(new OpenApiParameter
-        {
-            Name = "auth",
-            In =  ParameterLocation.Header,
-            Content = new Dictionary<String, OpenApiMediaType>(),
-            Required = false
-        });
-    }
-}

csharp/App/Backend/Program.cs

@@ -4,16 +4,15 @@ namespace InnovEnergy.App.Backend;
 
 public static class Program
 {
+    
+    // TODO: Trash    
+    
     public static void Main(String[] args)
     {
         //Db.CreateFakeRelations();
 
         var builder = WebApplication.CreateBuilder(args);
 
-        //builder.Services.AddHttpContextAccessor();
-        //builder.Services.AddEndpointsApiExplorer();
-        //builder.Services.AddCors(o => o.AddDefaultPolicy(p => p.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod()));
-
         builder.Services.AddControllers();
         builder.Services.AddSwaggerGen(c =>
         {
@@ -30,9 +29,8 @@ public static class Program
             app.UseSwaggerUI();
         }
   
-        //app.UseCors(p => p.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod()) ;
+        app.UseCors(p => p.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod()) ;
         app.UseHttpsRedirection();
-        //app.UseAuthorization();
         app.MapControllers();
 
         app.Run();

csharp/App/Backend/Properties/launchSettings.json

@@ -1,31 +1,15 @@
 {
   "$schema": "https://json.schemastore.org/launchsettings.json",
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:63205",
-      "sslPort": 44319
-    }
-  },
   "profiles": {
     "Backend": {
       "commandName": "Project",
       "dotnetRunMessages": true,
-      "launchBrowser": true,
+      
       "launchUrl": "swagger",
       "applicationUrl": "https://localhost:7087;http://localhost:5031",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"
       }
-    },
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
     }
   }
 }

csharp/App/Backend/Relations/Session.cs

@@ -1,6 +1,5 @@
 using InnovEnergy.App.Backend.Database;
 using InnovEnergy.App.Backend.DataTypes;
-using InnovEnergy.Lib.Utils;
 using SQLite;
 
 namespace InnovEnergy.App.Backend.Relations;
@@ -13,8 +12,8 @@ public class Session : Relation<String, Int64>
     [Indexed] public Int64    UserId   { get => Right; init => Right = value;}
     [Indexed] public DateTime LastSeen { get; set; }
 
-    [Ignore] public Boolean Valid => DateTime.Now - LastSeen < MaxAge 
+    [Ignore]  public Boolean Valid => DateTime.Now - LastSeen < MaxAge
-                                  && !User.Email.IsNullOrEmpty();
+                                   && (User) is not null;
 
     [Ignore] public User User => _User ??= Db.GetUserById(UserId)!;
 

csharp/Lib/SysTools/Edges/RemoteCommandToProcess.cs

@@ -1,50 +0,0 @@
-using InnovEnergy.Lib.SysTools.Process;
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class RemoteCommandToProcess
-{
-    public static ProcessResult ExecuteBlocking(this RemoteCommand command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return command
-            .ToLocalCommand()
-            .ExecuteBlocking(variables, logToConsole);
-    }
-
-    public static AsyncProcess ToAsyncProcess(this RemoteCommand command, Dictionary<String, String> variables = null)
-    {
-        return command
-            .ToLocalCommand()
-            .ToAsyncProcess(variables);
-    }
-
-    public static SyncProcess ToSyncProcess(this RemoteCommand command, Dictionary<String, String> variables = null)
-    {
-        return command
-            .ToLocalCommand()
-            .ToSyncProcess(variables);
-    }
-
-    private static SysCommand ToLocalCommand(this RemoteCommand command)
-    {
-        var ssh = "ssh"
-            .Opt("o", "ConnectTimeout=5")   // TODO
-            .Opt("o", "PasswordAuthentication=no")
-            .Opt("o", "StrictHostKeyChecking=no")
-            .Opt("o", "UserKnownHostsFile=/dev/null")
-            .Opt("o", "LogLevel=ERROR");
-
-        var host = command.Host;
-
-        if (host.KeyFile.HasValue)
-            ssh = ssh.Opt("i", host.KeyFile.Value);
-
-        if (host.Port != 22)
-            ssh = ssh.Opt("p", host.Port);
-
-        return ssh
-            .Arg($"{host.User}@{host.Address}")
-            .Arg(command.Path + command.Args);
-    }
-}

csharp/Lib/SysTools/Edges/RemotePathToRemoteCommand.cs

@@ -1,57 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class RemotePathToRemoteCommand
-{
-    public static RemoteCommand ToCommand(this RemotePath remotePath) => new RemoteCommand(remotePath);
-
-    public static RemoteCommand Opt1(this RemotePath remotePath, String option)
-    {
-        return remotePath
-            .ToCommand()
-            .Opt1(option);
-    }
-
-    public static RemoteCommand Opt1(this RemotePath remotePath, String option, Object value, String separator = " ")
-    {
-        return remotePath
-            .ToCommand()
-            .Opt1(option, value, separator);
-    }
-
-    public static RemoteCommand Opt2(this RemotePath remotePath, String option)
-    {
-        return remotePath
-            .ToCommand()
-            .Opt2(option);
-    }
-
-    public static RemoteCommand Opt2(this RemotePath remotePath, String option, Object value, String separator = "=")
-    {
-        return remotePath
-            .ToCommand()
-            .Opt2(option, value, separator);
-    }
-
-    public static RemoteCommand Opt(this RemotePath remotePath, String option)
-    {
-        return remotePath
-            .ToCommand()
-            .Opt(option);
-    }
-
-    public static RemoteCommand Opt(this RemotePath remotePath, String option, Object value)
-    {
-        return remotePath
-            .ToCommand()
-            .Opt(option, value);
-    }
-
-    public static RemoteCommand Arg(this RemotePath remotePath, Object argument)
-    {
-        return remotePath
-            .ToCommand()
-            .Arg(argument);
-    }
-}

csharp/Lib/SysTools/Edges/SshHostToRemoteCommand.cs

@@ -1,11 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SshHostToRemoteCommand
-{
-    public static RemoteCommand Command(this SshHost host, SysPath path)
-    {
-        return new RemoteCommand(host, path);
-    }
-}

csharp/Lib/SysTools/Edges/SshHostToRemotePath.cs

@@ -1,11 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SshHostToRemotePath
-{
-    public static RemotePath WithPath(this SshHost host, SysPath path)
-    {
-        return new RemotePath(host, path);
-    }
-}

csharp/Lib/SysTools/Edges/StringToCommand.cs

@@ -1,56 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class StringToCommand
-{
-    public static SysCommand ToCommand(this String cmd) => new SysCommand(cmd);
-
-    public static SysCommand Opt1(this String cmd, String option)
-    {
-        return cmd
-              .ToCommand()
-              .Opt1(option);
-    }
-
-    public static SysCommand Opt1(this String cmd, String option, Object value, String separator = " ")
-    {
-        return cmd
-              .ToCommand()
-              .Opt1(option, value, separator);
-    }
-
-    public static SysCommand Opt2(this String cmd, String option)
-    {
-        return cmd
-              .ToCommand()
-              .Opt2(option);
-    }
-
-    public static SysCommand Opt2(this String cmd, String option, Object value, String separator = "=")
-    {
-        return cmd
-              .ToCommand()
-              .Opt2(option, value, separator);
-    }
-
-    public static SysCommand Opt(this String cmd, String option)
-    {
-        return cmd
-              .ToCommand()
-              .Opt(option);
-    }
-
-    public static SysCommand Opt(this String cmd, String option, Object value)
-    {
-        return cmd
-              .ToCommand()
-              .Opt(option, value);
-    }
-
-    public static SysCommand Arg(this String cmd, Object argument)
-    {
-        return cmd
-              .ToCommand()
-              .Arg(argument);
-    }
-
-}

csharp/Lib/SysTools/Edges/StringToProcess.cs

@@ -1,26 +0,0 @@
-using InnovEnergy.Lib.SysTools.Process;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-using Env = Dictionary<String, String>;
-
-
-public static class StringToProcess
-{
-
-    public static ProcessResult ExecuteBlocking(this String command, Env variables = null, Boolean logToConsole = false)
-    {
-        return SysCommandToProcess.ExecuteBlocking(command, variables, logToConsole);
-    }
-
-    public static AsyncProcess ToAsyncProcess(this String command, Env variables = null, Boolean logToConsole = false)
-    {
-        return new AsyncProcess(command, variables, logToConsole);
-    }
-
-    public static SyncProcess ToSyncProcess(this String command, Env variables = null, Boolean logToConsole = false)
-    {
-        return new SyncProcess(command, variables, logToConsole);
-    }
-
-}

csharp/Lib/SysTools/Edges/StringToRemotePath.cs

@@ -1,8 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class StringToRemotePath
-{
-    public static RemotePath At(this String path, SshHost host) => new RemotePath(host, path);
-}

csharp/Lib/SysTools/Edges/StringToSysPath.cs

@@ -1,6 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class StringToSysPath
-{
-    public static SysPath ToPath(this String path) => new SysPath(path);
-}

csharp/Lib/SysTools/Edges/SysCommandToProcess.cs

@@ -1,72 +0,0 @@
-using System.Diagnostics;
-using System.Reactive.Linq;
-using System.Text;
-using InnovEnergy.Lib.SysTools.Process;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SysCommandToProcess
-{
-    public static ProcessResult ExecuteBlocking(this SysCommand command, Dictionary<String, String> variables = null, Boolean logToConsole =false)
-    {
-        var process = command.ToAsyncProcess(variables, logToConsole);
-
-        var stdOut = new List<String>();
-        var stdErr = new List<String>();
-        var output = new StringBuilder();
-
-        process.StandardOut.Subscribe(o =>
-        {
-            stdOut.Add(o);
-            output.AppendLine(o);
-        });
-
-        process.StandardErr.Subscribe(e =>
-        {
-            stdErr.Add(e);
-            output.AppendLine(e);
-        });
-
-        process.Run();
-
-            
-        var exitCode = process.ExitCode.Wait();
-
-        process.Terminate();
-        return new ProcessResult(exitCode, stdOut, stdErr, output.ToString());
-    }
-
-    public static AsyncProcess ToAsyncProcess(this SysCommand command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return new AsyncProcess(command, variables, logToConsole);
-    }
-
-    public static SyncProcess ToSyncProcess(this SysCommand command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return new SyncProcess(command, variables, logToConsole);
-    }
-
-    public static System.Diagnostics.Process ToConsoleProcess(this SysCommand command, Dictionary<String, String> variables = null)
-    {
-        var startInfo = new ProcessStartInfo
-        {
-            RedirectStandardOutput = false,
-            RedirectStandardError  = false,
-            RedirectStandardInput  = false,
-            UseShellExecute        = false,
-            CreateNoWindow         = true,
-            Arguments              = command.Args,
-            FileName               = command.Path,
-        };
-
-        if (variables != null)
-            foreach (var kv in variables)
-                startInfo.EnvironmentVariables[kv.Key] = kv.Value;
-
-        return new System.Diagnostics.Process
-        {
-            StartInfo = startInfo,
-            EnableRaisingEvents = true
-        };
-    }
-}

csharp/Lib/SysTools/Edges/SysCommandToRemoteCommand.cs

@@ -1,12 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SysCommandToRemoteCommand
-{
-    public static RemoteCommand At(this SysCommand command, SshHost host)
-    {
-        var (path, args) = command;
-        return new RemoteCommand(host, path, args);
-    }
-}

csharp/Lib/SysTools/Edges/SysPathToProcess.cs

@@ -1,21 +0,0 @@
-using InnovEnergy.Lib.SysTools.Process;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SysPathToProcess
-{
-    public static ProcessResult ExecuteBlocking(this SysPath command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return SysCommandToProcess.ExecuteBlocking(command, variables, logToConsole);
-    }
-
-    public static AsyncProcess ToAsyncProcess(this SysPath command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return new AsyncProcess(command, variables, logToConsole);
-    }
-
-    public static SyncProcess ToSyncProcess(this SysPath command, Dictionary<String, String> variables = null, Boolean logToConsole = false)
-    {
-        return new SyncProcess(command, variables, logToConsole);
-    }
-}

csharp/Lib/SysTools/Edges/SysPathToRemotePath.cs

@@ -1,11 +0,0 @@
-using InnovEnergy.Lib.SysTools.Remote;
-
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SysPathToRemotePath
-{
-    public static RemotePath At(this SysPath path, SshHost host)
-    {
-        return new RemotePath(host, path);
-    }
-}

csharp/Lib/SysTools/Edges/SysPathToSysCommand.cs

@@ -1,55 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Edges;
-
-public static class SysPathToSysCommand
-{
-    public static SysCommand ToCommand(this SysPath path) => new SysCommand(path);
-
-    public static SysCommand Opt1(this SysPath path, String option)
-    {
-        return path
-            .ToCommand()
-            .Opt1(option);
-    }
-
-    public static SysCommand Opt1(this SysPath path, String option, Object value, String separator = " ")
-    {
-        return path
-            .ToCommand()
-            .Opt1(option, value, separator);
-    }
-
-    public static SysCommand Opt2(this SysPath path, String option)
-    {
-        return path
-            .ToCommand()
-            .Opt2(option);
-    }
-
-    public static SysCommand Opt2(this SysPath path, String option, Object value, String separator = "=")
-    {
-        return path
-            .ToCommand()
-            .Opt2(option, value, separator);
-    }
-
-    public static SysCommand Opt(this SysPath path, String option)
-    {
-        return path
-            .ToCommand()
-            .Opt(option);
-    }
-
-    public static SysCommand Opt(this SysPath path, String option, Object value)
-    {
-        return path
-            .ToCommand()
-            .Opt(option, value);
-    }
-
-    public static SysCommand Arg(this SysPath path, Object argument)
-    {
-        return path
-            .ToCommand()
-            .Arg(argument);
-    }
-}

csharp/Lib/SysTools/FileIo.cs

@@ -3,7 +3,6 @@ using InnovEnergy.Lib.Utils;
 
 namespace InnovEnergy.Lib.SysTools;
 
-[Obsolete("Needs rework before use")]
 public static class FileIo
 {
     public static Boolean Exists         (this SysPath path) => path.FileExists() || path.DirectoryExists();
@@ -92,7 +91,7 @@ public static class FileIo
 
         SysPath Target(SysPath path) => targetDir.Append(path.RelativeTo(sourceDir));
 
-        sourceDir.Traverse(Directories)
+        sourceDir.TraverseDepthFirstPreOrder(Directories)
                  .Do(d => Target(d).CreateDirectory())
                  .SelectMany(Files)
                  .ForEach(f => f.CopyFileTo(Target(f)));
@@ -116,7 +115,7 @@ public static class FileIo
 
     public static IEnumerable<SysPath> DescendantDirectories(this SysPath path)
     {
-        return path.Traverse(Directories);
+        return path.TraverseDepthFirstPreOrder(Directories);
     }
 
     public static IEnumerable<SysPath> DescendantFiles(this SysPath path)

csharp/Lib/SysTools/Process/AsyncProcess.cs

@@ -1,186 +0,0 @@
-using System.Diagnostics;
-using System.Reactive.Concurrency;
-using System.Reactive.Linq;
-using System.Reactive.Subjects;
-using InnovEnergy.Lib.SysTools.Utils;
-using static System.ConsoleColor;
-
-namespace InnovEnergy.Lib.SysTools.Process;
-
-using Env = Dictionary<String, String>;
-
-[Obsolete("Use CliWrap instead")]
-public class AsyncProcess
-{
-    private readonly Subject<String>      _StandardIn;
-    private readonly Subject<String>      _StandardOut;
-    private readonly Subject<String>      _StandardErr;
-    private readonly ReplaySubject<Int32> _ExitCode;
-
-    public SysCommand Command     { get; }
-    public Env        Environment { get; }
-
-    public IObserver<String>   StandardIn  => _StandardIn;
-    public IObservable<String> StandardOut => _StandardOut;
-    public IObservable<String> StandardErr => _StandardErr;
-    public IObservable<Int32>  ExitCode    => _ExitCode;
-
-    public Boolean HasStarted  => Process != null;
-    public Boolean HasFinished => HasStarted && Process.HasExited;
-
-    private System.Diagnostics.Process Process { get; set; }
-
-    public AsyncProcess(SysCommand command, Env environment = null, Boolean logToConsole = false)
-    {
-        Command = command;
-        Environment = environment;
-
-        _StandardIn  = new Subject<String>();
-        _StandardOut = new Subject<String>();
-        _StandardErr = new Subject<String>();
-        _ExitCode    = new ReplaySubject<Int32>();
-
-        if (logToConsole)
-            LogToConsole();
-    }
-
-    private void LogToConsole()
-    {
-        _StandardOut.Subscribe(d => d.WriteLine());
-        _StandardErr.Subscribe(d => d.WriteLine(Red));
-        _ExitCode.Subscribe(ec =>
-        {
-            "ExitCode: ".Write(Cyan);
-            ec.WriteLine(ec == 0 ? Green : Red);
-        });
-    }
-
-
-    public Int32 WaitForExit()
-    {
-        EnsureStarted();
-
-        return ExitCode.Wait();
-
-        //Process.WaitForExit(); // TODO
-        //return Process.ExitCode;
-    }
-
-    private void EnsureNotStarted()
-    {
-        if (HasStarted)
-            throw new Exception("Process has already started");
-    }
-
-    private void EnsureStarted()
-    {
-        if (!HasStarted)
-            throw new Exception("Process has not yet started");
-    }
-
-
-    public AsyncProcess Run()
-    {
-        EnsureNotStarted();
-        Process = InitProcess();
-
-        return this;
-    }
-
-    private System.Diagnostics.Process InitProcess()
-    {
-        var startInfo = new ProcessStartInfo
-        {
-            RedirectStandardOutput = true,
-            RedirectStandardError  = true,
-            RedirectStandardInput  = true,
-            UseShellExecute        = false,
-            CreateNoWindow         = true,
-            Arguments              = Command.Args,
-            FileName               = Command.Path,
-        };
-
-        foreach (var ev in Environment.EmptyIfNull())
-            startInfo.EnvironmentVariables[ev.Key] = ev.Value;
-
-        var proc = new System.Diagnostics.Process
-        {
-            StartInfo = startInfo,
-            EnableRaisingEvents = true
-        };
-
-        proc.Start(); // must start BEFORE we access Streams
-
-        Observable.Repeat(proc.StandardOutput, TaskPoolScheduler.Default)
-            .Select(s => s.ReadLine())
-            .TakeWhile(l => l != null)
-            .Subscribe(_StandardOut);
-
-        Observable.Repeat(proc.StandardError, TaskPoolScheduler.Default)
-            .Select(s => s.ReadLine())
-            .TakeWhile(l => l != null)
-            .Subscribe(_StandardErr);
-
-        _StandardIn.Subscribe(onNext: proc.StandardInput.WriteLine,
-            onError: _ => proc.StandardInput.Close(),
-            onCompleted: proc.StandardInput.Close);
-
-        Observable.FromEventPattern(e => proc.Exited += e, e => proc.Exited -= e)
-            .Take(1)
-            .Do(_=>Console.WriteLine("Exited"))
-            .OfType<Object>()
-            .Concat(StandardOut.IgnoreElements()) // make sure std streams finish first
-            .Concat(StandardErr.IgnoreElements())
-            .Select(_ => Process.ExitCode)
-            .Subscribe(_ExitCode);
-
-        _ExitCode.Subscribe(_ =>
-        {
-            proc.StandardInput.Close();
-            proc.StandardOutput.Close();
-            proc.StandardError.Close();
-        });
-
-        return proc;
-    }
-
-    public AsyncProcess Terminate()
-    {
-
-        try
-        {
-            Process.Kill();
-        }
-        catch
-        {
-            // ignored
-        }
-
-
-        return this;
-    }
-
-    public AsyncProcess Kill()
-    {
-        EnsureStarted();
-
-        try
-        {
-            Process.Kill();
-        }
-        catch
-        {
-            // ignored
-        }
-
-        return this;
-    }
-
-
-    public IDisposable ThrowOnStdErr()
-    {
-        return StandardErr.Subscribe(e => throw new Exception(e));
-    }
-
-    public override String ToString() => Command.ToString();  // TODO: env
-}

csharp/Lib/SysTools/Process/ProcessResult.cs

@@ -1,63 +0,0 @@
-using InnovEnergy.Lib.SysTools.Utils;
-
-namespace InnovEnergy.Lib.SysTools.Process;
-
-[Obsolete("Use CliWrap instead")]
-public readonly struct ProcessResult
-{
-    public ProcessResult(Int32 exitCode,
-        IReadOnlyList<String> stdOut,
-        IReadOnlyList<String> stdErr,
-        String output)
-    {
-        ExitCode = exitCode;
-        StdOut   = stdOut;
-        StdErr   = stdErr;
-        Output   = output;
-    }
-
-    public Int32  ExitCode { get; }
-    public String Output   { get; }
-
-    public IReadOnlyList<String> StdOut { get; }
-    public IReadOnlyList<String> StdErr { get; }
-
-    public ProcessResult ThrowOnError()
-    {
-        if (ExitCode != 0)
-        {
-            if (StdErr.Count ==0)
-                throw new Exception(nameof(AsyncProcess) + " exited with exit code " + ExitCode);
-
-            throw new Exception(StdErr.Aggregate((a, b) => a.NewLine() + b));
-        }
-
-        return this;
-    }
-
-    public ProcessResult OnError(Action<ProcessResult> action)
-    {
-        if (Failed) action(this);
-        return this;
-    }
-
-    public ProcessResult OnSuccess(Action<ProcessResult> action)
-    {
-        if (Succeeded) action(this);
-        return this;
-    }
-
-    public ProcessResult Dump()
-    {
-        Output.Write();
-        return this;
-    }
-
-    public Boolean Succeeded => ExitCode == 0;
-    public Boolean Failed    => ExitCode != 0;
-
-    public override String ToString()
-    {
-        return Output.NewLine() + "ExitCode: " + ExitCode;
-    }
-}

csharp/Lib/SysTools/Process/SyncProcess.cs

@@ -1,284 +0,0 @@
-using System.Diagnostics;
-using System.Text.RegularExpressions;
-using InnovEnergy.Lib.SysTools.Utils;
-using static System.ConsoleColor;
-
-namespace InnovEnergy.Lib.SysTools.Process;
-
-using Env = Dictionary<String, String>;
-
-[Obsolete("Use CliWrap instead")]
-public class SyncProcess
-{
-    public SysCommand Command      { get; }
-    public Env        Environment  { get; }
-    public Boolean    LogToConsole { get; }
-
-    public Boolean HasFinished => Process.HasExited;
-
-    private Task<(DateTime timeStamp, StdOutput output)> _ReadStdOut;
-    private Task<(DateTime timeStamp, StdError  error )> _ReadStdErr;
-
-    private System.Diagnostics.Process Process { get; }
-
-    public SyncProcess(SysCommand command, Env environment = null, Boolean logToConsole = false)
-    {
-        Command      = command;
-        Environment  = environment;
-        LogToConsole = logToConsole;
-        Process      = InitProcess();
-
-        _ReadStdOut = ReadNextStdOut();
-        _ReadStdErr = ReadNextStdErr();
-    }
-
-    private Task<(DateTime timeStamp, StdOutput output)> ReadNextStdOut()
-    {
-        Debug.Assert(_ReadStdOut == null || _ReadStdOut.IsCompleted);
-
-        return Process
-            .StandardOutput
-            .ReadLineAsync()
-            .ContinueWith(t => (DateTime.Now, SyncProcessOutput.StdOutput(t.Result)));
-
-    }
-
-    private Task<(DateTime timeStamp, StdError error)> ReadNextStdErr()
-    {
-        Debug.Assert(_ReadStdErr == null || _ReadStdErr.IsCompleted);
-
-        return Process
-            .StandardError
-            .ReadLineAsync()
-            .ContinueWith(t => (DateTime.Now, SyncProcessOutput.StdError(t.Result)));
-    }
-
-
-    private System.Diagnostics.Process InitProcess()
-    {
-        var startInfo = new ProcessStartInfo
-        {
-            RedirectStandardOutput = true,
-            RedirectStandardError  = true,
-            RedirectStandardInput  = true,
-            UseShellExecute        = false,
-            CreateNoWindow         = true,
-            Arguments              = Command.Args.Trim(),
-            FileName               = Command.Path,
-        };
-
-        foreach (var ev in Environment.EmptyIfNull())
-            startInfo.EnvironmentVariables[ev.Key] = ev.Value;
-
-        var proc = new System.Diagnostics.Process
-        {
-            StartInfo = startInfo,
-            EnableRaisingEvents = true
-        };
-
-        proc.Start(); // must start BEFORE we access Streams
-
-        return proc;
-    }
-
-    public Match ReadStdOutUntil(Regex rx)
-    {
-        foreach (var l in ReadStdOut())
-        {
-
-            var match = rx.Match(l);
-            if (match.Success)
-                return match;
-        }
-
-        throw new Exception("no matching output");
-    }
-
-    public String ReadStdOutUntil(String line)
-    {
-        return ReadStdOutUntil(l => l == line);
-    }
-
-
-    public String ReadStdOutUntil(Func<String, Boolean> predicate)
-    {
-        foreach (var l in ReadStdOut())
-        {
-            if (predicate(l))
-                return l;
-        }
-
-        throw new Exception("no matching output");
-    }
-
-    public IEnumerable<String> ReadStdOut(TimeSpan timeOut = default) => ReadMany(timeOut).ThrownOnStdErr();
-
-    public IEnumerable<SyncProcessOutput> ReadMany(TimeSpan timeOut = default)
-    {
-        SyncProcessOutput output;
-
-        do
-        {
-            output = ReadNext(timeOut);
-            yield return output;
-        }
-        while (!(output is ExitCode) && !(output is TimeoutError));
-    }
-
-    public SyncProcessOutput ReadNext(TimeSpan timeOut = default)
-    {
-        var wait = timeOut == default
-            ? Task.WaitAny(_ReadStdOut, _ReadStdErr)
-            : Task.WaitAny(_ReadStdOut, _ReadStdErr, Task.Delay(timeOut));
-
-        if (wait == 2)
-        {
-            if (LogToConsole)
-                "Timeout".WriteLine(Red);
-
-            return SyncProcessOutput.TimeoutError(timeOut);
-        }
-
-        if (_ReadStdOut.IsCompleted && _ReadStdErr.IsCompleted)
-        {
-            var (outTimeStamp, output) = _ReadStdOut.Result;
-            var (errTimeStamp, error)  = _ReadStdErr.Result;
-
-            if (outTimeStamp < errTimeStamp && output != null)
-            {
-                _ReadStdOut = ReadNextStdOut();
-
-                if (LogToConsole)
-                    output.Data.WriteLine();
-
-                return output;
-            }
-
-            if (error != null)
-            {
-                _ReadStdErr = ReadNextStdErr();
-
-                if (LogToConsole)
-                    error.Data.WriteLine(Red);
-
-                return error;
-            }
-
-            Process.WaitForExit();
-
-            var exitCode = Process.ExitCode;
-
-            if (LogToConsole)
-            {
-                "ExitCode: ".Write(Cyan);
-                exitCode.WriteLine(exitCode == 0 ? Green : Red);
-            }
-
-            return SyncProcessOutput.ExitCode(exitCode);
-        }
-
-        if (_ReadStdOut.IsCompleted)
-        {
-            var (_, output) = _ReadStdOut.Result;
-
-            if (output != null)
-            {
-                _ReadStdOut = ReadNextStdOut();
-                return output;
-            }
-
-        }
-
-        if (_ReadStdErr.IsCompleted)
-        {
-            var (_, error) = _ReadStdErr.Result;
-
-            if (error != null)
-            {
-                _ReadStdErr = ReadNextStdErr();
-                return error;
-            }
-
-        }
-
-        throw new Exception("This should not happen");
-    }
-
-    public SyncProcess Terminate()
-    {
-        Process.Kill();
-        return this;
-    }
-
-    public SyncProcess Kill()
-    {
-        Process.Kill();
-        return this;
-    }
-
-    public void Write(String line)
-    {
-        Process.StandardInput.WriteLine(line);
-    }
-
-    public override String ToString() => Command.ToString();  // TODO: env
-}
-
-
-public abstract class SyncProcessOutput
-{
-    public static StdOutput    StdOutput    (String    data   ) => new StdOutput(data);
-    public static StdError     StdError     (String    data   ) => new StdError(data);
-    public static ExitCode     ExitCode     (Int32     data   ) => new ExitCode(data);
-    public static TimeoutError TimeoutError (TimeSpan  timeout) => new TimeoutError(timeout);
-}
-
-public class ExitCode : SyncProcessOutput
-{
-    public ExitCode(Int32 data) { Data = data;}
-    public Int32 Data { get; }
-
-    public override String ToString() => Data.ToString();
-}
-
-public class StdError : SyncProcessOutput
-{
-    public StdError(String data) { Data = data;}
-    public String Data { get; }
-
-    public override String ToString() => Data;
-}
-
-public class StdOutput : SyncProcessOutput
-{
-    public StdOutput(String data) { Data = data; }
-    public String Data { get; }
-
-    public override String ToString() => Data;
-}
-
-public class TimeoutError : SyncProcessOutput
-{
-    public TimeoutError(TimeSpan timeout) { Timeout = timeout; }
-    public TimeSpan Timeout { get; }
-
-    public override String ToString() => Timeout.ToString();
-}
-
-
-public static class ProcessOutputExtensions
-{
-    public static IEnumerable<String> ThrownOnStdErr(this IEnumerable<SyncProcessOutput> po)
-    {
-        foreach (var p in po)
-        {
-            if (p is StdOutput o)
-                yield return o.Data;
-
-            if (p is StdError e)
-                throw new Exception(e.Data);
-
-            // Ignore exit code
-        }
-    }
-}

csharp/Lib/SysTools/Remote/RemoteCommand.cs

@@ -1,117 +0,0 @@
-using InnovEnergy.Lib.SysTools.Utils;
-
-namespace InnovEnergy.Lib.SysTools.Remote;
-
-[Obsolete("Use CliWrap instead")]
-public readonly struct RemoteCommand
-{
-    public SshHost Host { get; }
-    public SysPath Path { get; }
-    public String  Args { get; }
-
-    public RemoteCommand(RemotePath remotePath, String args = "")
-    {
-        var (host, path) = remotePath;
-
-        Args = args;
-        Host = host;
-        Path = path;
-    }
-
-    public RemoteCommand(SshHost host, SysPath path, String args = "")
-    {
-        Args = args;
-        Host = host;
-        Path = path;
-    }
-
-    public static RemoteCommand FromRemotePath(RemotePath remotePath) => new RemoteCommand(remotePath);
-
-
-    // TODO
-    public RemoteCommand Opt1(String option)
-    {
-        return new RemoteCommand(Host, Path, $"{Args} -{option}");
-    }
-
-    public RemoteCommand Opt1(String option, Object value, String separator = " ")
-    {
-        return new RemoteCommand(Host, Path, $"{Args} -{option}{separator}{Quote(value)}");
-    }
-
-    public RemoteCommand Opt2(String option)
-    {
-        return new RemoteCommand(Host, Path, $"{Args} --{option}");
-    }
-
-    public RemoteCommand Opt2(String option, Object value, String separator = "=")
-    {
-        return new RemoteCommand(Host, Path, $"{Args} --{option}{separator}{Quote(value)}");
-    }
-
-    public RemoteCommand Opt(String option)
-    {
-        return option.Length == 1
-            ? Opt1(option)
-            : Opt2(option);
-    }
-
-    public RemoteCommand Opt(String option, Object value)
-    {
-        return option.Length == 1
-            ? Opt1(option, value)
-            : Opt2(option, value);
-    }
-
-    public RemoteCommand Arg(Object argument)
-    {
-        return new RemoteCommand(Host, Path, Args + " " + Quote(argument));
-    }
-
-    private static String Quote(Object argument)
-    {
-        var arg = argument.ToString();
-        if (arg.Contains(" "))
-            arg = arg.Quote(); // TODO: single quote?
-
-        return arg;
-    }
-
-
-    #region equality
-
-    public Boolean Equals(RemoteCommand other)
-    {
-        return Host.Equals(other.Host) && Path.Equals(other.Path) && Args == other.Args;
-    }
-
-    public override Boolean Equals(Object obj)
-    {
-        return obj is RemoteCommand other && Equals(other);
-    }
-
-    public override Int32 GetHashCode()
-    {
-        unchecked
-        {
-            var hashCode = Host.GetHashCode();
-            hashCode = (hashCode * 397) ^ Path.GetHashCode();
-            hashCode = (hashCode * 397) ^ (Args != null ? Args.GetHashCode() : 0);
-            return hashCode;
-        }
-    }
-
-    #endregion equality
-
-
-    public static implicit operator RemoteCommand(RemotePath remotePath) => new RemoteCommand(remotePath);
-
-    public void Deconstruct(out SshHost host, out SysPath path, out String args)
-    {
-        host = Host;
-        path = Path;
-        args = Args;
-    }
-
-    public override String ToString() => $"{Host}:{Path}{Args}";
-}

csharp/Lib/SysTools/Remote/RemoteFileIo.cs

@@ -1,299 +0,0 @@
-using InnovEnergy.Lib.SysTools.Edges;
-using InnovEnergy.Lib.SysTools.Utils;
-
-namespace InnovEnergy.Lib.SysTools.Remote;
-
-[Obsolete("Needs rework before use")]
-public static class RemoteFileIo
-{
-
-    public static Boolean Exists(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "test"
-            .Opt("e")
-            .Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ExitCode == 0;
-    }
-
-    // TODO: how to find out if ssh has failed or remote command?
-
-    public static Boolean DirectoryExists(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "test"
-            .Opt("d")
-            .Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ExitCode == 0;
-    }
-
-    public static Boolean FileExists(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "test"
-            .Opt("f")
-            .Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ExitCode == 0;
-    }
-
-    public static Boolean DirectoryExists(this RemotePath remotePath, String directoryName)
-    {
-        return DirectoryExists(remotePath / directoryName);
-    }
-
-    public static Boolean FileExists(this RemotePath remotePath, String fileName)
-    {
-        return DirectoryExists(remotePath / fileName);
-    }
-
-    public static IEnumerable<RemotePath> Directories(this RemotePath rp)
-    {
-        var (host, path) = rp;
-
-        return "find"
-            .Arg(path)
-            .Opt1("mindepth", 1)
-            .Opt1("maxdepth", 1)
-            .Opt1("type", "d")
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut
-            .Select(p => new RemotePath(host, p));
-    }
-
-    public static IEnumerable<RemotePath> Files(this RemotePath rp)
-    {
-        var (host, path) = rp;
-
-        return "find"
-            .Arg(path)
-            .Opt1("mindepth", 1)
-            .Opt1("maxdepth", 1)
-            .Opt1("type", "f")
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut
-            .Select(p => new RemotePath(host, p));
-    }
-
-    public static RemotePath CreateDirectory(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        "mkdir".Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError();
-
-        return remotePath;
-    }
-
-    public static RemotePath MoveFileTo(this RemotePath sourcePath, RemotePath targetPath)
-    {
-        throw new NotImplementedException();
-    }
-
-    public static RemotePath MoveDirectory(this RemotePath sourcePath, RemotePath targetPath)
-    {
-        throw new NotImplementedException();
-    }
-
-    public static RemotePath CreateDirectory(this RemotePath path, String dirName)
-    {
-        return CreateDirectory(path / dirName);
-    }
-
-    public static RemotePath DeleteFile(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;  // TODO: test file
-
-        "rm".Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError();
-
-        return remotePath;
-    }
-
-
-    public static RemotePath DeleteFile(this RemotePath path, String fileName)
-    {
-        return DeleteFile(path / fileName);
-    }
-
-    public static RemotePath DeleteDirectory(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;  // TODO: test dir
-
-        "rm".Opt("r")
-            .Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError();
-
-        return remotePath;
-    }
-
-    public static RemotePath DeleteDirectory(this RemotePath path, String directoryName)
-    {
-        return DeleteDirectory(path / directoryName);
-    }
-
-    public static RemotePath CopyDirectoryTo(this RemotePath sourceDir, RemotePath targetDir)
-    {
-        throw new NotImplementedException();
-    }
-
-
-    public static RemotePath CopyFileTo(this RemotePath srcFile, RemotePath targetFile)
-    {
-        throw new NotImplementedException();
-    }
-
-    public static RemotePath CopyFileToDirectory(this RemotePath srcFile, RemotePath targetDir)
-    {
-        throw new NotImplementedException();
-    }
-
-    public static IEnumerable<RemotePath> DescendantDirectories(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "find"
-            .Arg(path)
-            .Opt1("type", "d")
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut
-            .Select(d => new RemotePath(host, d));
-    }
-
-    public static IEnumerable<RemotePath> DescendantFiles(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "find"
-            .Arg(path)
-            .Opt1("type", "f")
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut
-            .Select(d => new RemotePath(host, d));
-    }
-
-    public static IEnumerable<RemotePath> Descendants(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-        return "find"
-            .Arg(path)
-            .Opt1("mindepth", 1)
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut
-            .Select(l => new RemotePath(host, l));
-    }
-
-
-    public static IEnumerable<Byte> ReadBytes(this RemotePath path)
-    {
-        throw new NotImplementedException();
-    }
-
-
-    public static IReadOnlyList<String> ReadLines(this RemotePath remotePath)
-    {
-        var (host, path) = remotePath;
-
-        return "cat"
-            .Arg(path)
-            .At(host)
-            .ExecuteBlocking()
-            .ThrowOnError()
-            .StdOut;
-    }
-
-    // public static IEnumerable<String> ReadLines(this RemotePath path, Encoding encoding)
-    // {
-    //     throw new NotImplementedException();
-    // }
-
-    //public static String ReadText(this RemotePath path) => path.ReadText(Encoding.UTF8);
-
-    public static String ReadText(this RemotePath rp)
-    {
-        var lines = ReadLines(rp);
-
-        if (lines.Count == 0) return "";
-        if (lines.Count == 1) return lines[0];
-
-        return lines.Aggregate((a, b) => a.NewLine() + b);
-    }
-
-    public static RemotePath WriteText(this RemotePath rp, String text)
-    {
-        throw new NotImplementedException();
-    }
-
-
-    public static RemotePath AppendLines(this RemotePath filePath, params String[] lines)
-    {
-        return AppendLines(filePath, (IEnumerable<String>) lines);
-    }
-
-    public static RemotePath AppendLines(this RemotePath rp, IEnumerable<String> lines)
-    {
-        return WriteLines(rp, lines, append: true);
-    }
-
-    public static RemotePath WriteLines(this RemotePath filePath, params String[] lines)
-    {
-        return WriteLines(filePath, (IEnumerable<String>) lines);
-    }
-
-    public static RemotePath WriteLines(this RemotePath rp, IEnumerable<String> lines)
-    {
-        return WriteLines(rp, lines, append: false);
-    }
-
-    private static RemotePath WriteLines(this RemotePath rp, IEnumerable<String> lines, Boolean append)
-    {
-        var (host, path) = rp;
-
-        var proc = "cat"
-            .Arg(append ? ">>" : ">")
-            .Arg(path)
-            .At(host).ToAsyncProcess();
-
-        foreach (var line in lines)
-            proc.StandardIn.OnNext(line);
-
-        proc.StandardIn.OnCompleted();  // TODO: OnCompleted or not?
-
-        // TODO: error handling
-
-        var exitCode = proc.WaitForExit();
-
-        return rp;
-    }
-
-    public static RemotePath AppendText(this RemotePath filePath, String text)
-    {
-        throw new NotImplementedException();
-    }
-
-
-}

csharp/Lib/SysTools/Remote/RemotePath.cs

@@ -1,99 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Remote;
-
-[Obsolete]
-public readonly struct RemotePath
-{
-    public SysPath Path { get; }
-    public SshHost Host { get; }
-
-    public RemotePath Parent    => Path.Parent.At(Host);
-    public String     Tail      => Path.Tail;
-    public String     Head      => Path.Head;
-    public String     Extension => Path.Extension;
-
-    public RemotePath(SshHost host, SysPath path)
-    {
-        Host = host;
-        Path = path;
-    }
-
-    public RemotePath At(SshHost host)
-    {
-        return new RemotePath(host, Path);
-    }
-
-    public RemotePath ToRelative() => Path.ToRelative().At(Host);
-    public RemotePath ToAbsolute() => Path.ToAbsolute().At(Host);
-    public RemotePath ToEnvRef()   => Path.ToEnvRef().At(Host);
-
-    public RemotePath RelativeTo(RemotePath referencePath)
-    {
-        if (!Host.Equals(referencePath.Host))
-            throw new ArgumentException(nameof(referencePath));
-
-        return Path.RelativeTo(referencePath.Path).At(Host);
-    }
-
-    public RemotePath RelativeTo(SysPath referencePath)
-    {
-        return Path.RelativeTo(referencePath).At(Host);
-    }
-
-    public Boolean IsSubPathOf(RemotePath referencePath)
-    {
-        var (host, path) = referencePath;
-        return Host.Equals(host) && Path.IsSubPathOf(path);
-    }
-
-    public RemotePath Append(SysPath right)
-    {
-        return Path.Append(right).At(Host);
-    }
-
-    #region equality
-
-    public Boolean Equals(RemotePath other)
-    {
-        var (host, path) = other;
-        return Path.Equals(path) && Host.Equals(host);
-    }
-
-    public override Boolean Equals(Object obj)
-    {
-        return obj is RemotePath other && Equals(other);
-    }
-
-    public override Int32 GetHashCode()
-    {
-        unchecked
-        {
-            return (Path.GetHashCode() * 397) ^ Host.GetHashCode();
-        }
-    }
-
-    #endregion equality
-
-
-
-
-
-    #region operators
-
-    public static RemotePath operator /(RemotePath left, SysPath right) => left.Append(right);
-    public static RemotePath operator /(RemotePath left, String  right) => left.Append(right);
-
-    public static Boolean operator ==(RemotePath left, RemotePath right) => left.Equals(right);
-    public static Boolean operator !=(RemotePath left, RemotePath right) => left.Equals(right);
-
-    public static implicit operator String(RemotePath remotePath) => remotePath.ToString();
-
-    #endregion
-
-    public void Deconstruct(out SshHost host, out SysPath path)
-    {
-        path = Path;
-        host = Host;
-    }
-
-    public override String ToString() => $"{Host}:{Path}";
-}

csharp/Lib/SysTools/Remote/SshHost.cs

@@ -1,103 +0,0 @@
-using InnovEnergy.Lib.SysTools.Edges;
-using InnovEnergy.Lib.SysTools.Utils;
-
-namespace InnovEnergy.Lib.SysTools.Remote;
-
-[Obsolete("Needs rework before use")]
-public readonly struct SshHost
-{
-    public const Int32 DefaultPort = 22;
-
-    public String   User    { get; }
-    public String   Address { get; }
-    public Int32    Port    { get; }
-    public SysPath? KeyFile { get; }
-
-    public SshHost(String user, String address, Int32 port = DefaultPort)
-    {
-        User    = user;
-        Address = address;
-        KeyFile = null;
-        Port    = port;
-    }
-
-    public SshHost(String user, String address, SysPath? keyFile, Int32 port = DefaultPort)
-    {
-        User    = user;
-        Address = address;
-        KeyFile = keyFile;
-        Port    = port;
-    }
-
-    public static SshHost Parse(String userAtAddressColonPort)
-    {
-        var addressPort = userAtAddressColonPort.AfterFirst('@').Split(':');
-
-        var user    = userAtAddressColonPort.UntilFirst('@');
-        var address = addressPort[0];
-        var port    = addressPort.Length < 2 ? DefaultPort : Int32.Parse(addressPort[1]);
-
-        return new SshHost(user, address, null, port);
-    }
-
-    public static SshHost Parse(String userAtAddressColonPort, SysPath keyFile)
-    {
-        var addressPort = userAtAddressColonPort.AfterFirst('@').Split(':');
-
-        var user    = userAtAddressColonPort.UntilFirst('@');
-        var address = addressPort[0];
-        var port    = addressPort.Length < 2 ? DefaultPort : Int32.Parse(addressPort[1]);
-
-        return new SshHost(user, address, keyFile, port);
-    }
-
-
-
-    public static SshHost Localhost { get; } = new SshHost(Environment.UserName, "127.0.0.1");
-
-    public Boolean IsLocalhost => Equals(Localhost);
-
-    public override String ToString() => $"{User}@{Address}";
-
-    #region equality
-
-    public Boolean Equals(SshHost other)
-    {
-        return User == other.User &&
-               Address == other.Address &&
-               Port == other.Port &&
-               Nullable.Equals(KeyFile, other.KeyFile);
-    }
-
-    public override Boolean Equals(Object obj)
-    {
-        return obj is SshHost other && Equals(other);
-    }
-
-    public override Int32 GetHashCode()
-    {
-        unchecked
-        {
-            var hashCode = (User != null ? User.GetHashCode() : 0);
-            hashCode = (hashCode * 397) ^ (Address != null ? Address.GetHashCode() : 0);
-            hashCode = (hashCode * 397) ^ Port;
-            hashCode = (hashCode * 397) ^ KeyFile.GetHashCode();
-            return hashCode;
-        }
-    }
-
-    #endregion
-
-    public static RemotePath operator / (SshHost host, SysPath path) => host.WithPath(path);
-    public static RemotePath operator / (SshHost host, String  path)
-    {
-        return host.WithPath(path.ToPath().ToAbsolute());
-    }
-
-    public void Deconstruct(out String user, out String address, out SysPath? keyFile)
-    {
-        user    = User;
-        address = Address;
-        keyFile = KeyFile;
-    }
-}

csharp/Lib/SysTools/SysCommand.cs

@@ -1,104 +0,0 @@
-using InnovEnergy.Lib.SysTools.Utils;
-
-namespace InnovEnergy.Lib.SysTools;
-
-[Obsolete("Use CliWrap instead")]
-public readonly struct SysCommand
-{
-    public SysPath Path { get; }
-    public String  Args { get; }
-
-    public SysCommand(SysPath path, String args = "")
-    {
-        Path = path;
-        Args = args;
-    }
-
-    public static SysCommand FromPath(SysPath path) => new SysCommand(path);
-    public static SysCommand FromString(String cmd) => new SysCommand(cmd);
-
-    public SysCommand Opt1(String option)
-    {
-        return new SysCommand(Path, $"{Args} -{option}");
-    }
-
-    public SysCommand Opt1(String option, Object value, String separator = " ")
-    {
-        return new SysCommand(Path, $"{Args} -{option}{separator}{QuoteArg(value)}");
-    }
-
-    public SysCommand Opt2(String option)
-    {
-        return new SysCommand(Path, $"{Args} --{option}");
-    }
-
-    public SysCommand Opt2(String option, Object value, String separator = "=")
-    {
-        return new SysCommand(Path, $"{Args} --{option}{separator}{QuoteArg(value)}");
-    }
-
-    public SysCommand Opt(String option)
-    {
-        return option.Length == 1
-            ? Opt1(option)
-            : Opt2(option);
-    }
-
-    public SysCommand Opt(String option, Object value)
-    {
-        return option.Length == 1
-            ? Opt1(option, value)
-            : Opt2(option, value);
-    }
-
-    public SysCommand Arg(Object argument)
-    {
-        return new SysCommand(Path, $"{Args} {QuoteArg(argument)}");
-    }
-
-    private static String QuoteArg(Object argument)
-    {
-        var arg = argument.ToString();
-        if (arg.Contains(" "))
-            arg = arg.Quote(); // TODO: single quote?
-
-        return arg;
-    }
-
-    public static implicit operator SysCommand(String cmd)   => FromString(cmd);
-    public static implicit operator SysCommand(SysPath path) => FromPath(path);
-
-    public static SysCommand operator %(SysCommand cmd, String argument) => cmd.Arg(argument);
-    public static SysCommand operator -(SysCommand cmd, String option  ) => cmd.Opt(option);
-    public static SysCommand operator -(SysCommand cmd, (String opt, Object value) option ) => cmd.Opt(option.opt, option.value);
-
-    #region equality
-
-    public Boolean Equals(SysCommand other)
-    {
-        return Path.Equals(other.Path) && Args == other.Args;
-    }
-
-    public override Boolean Equals(Object obj)
-    {
-        return obj is SysCommand other && Equals(other);
-    }
-
-    public override Int32 GetHashCode()
-    {
-        unchecked
-        {
-            return (Path.GetHashCode() * 397) ^ (Args != null ? Args.GetHashCode() : 0);
-        }
-    }
-
-    #endregion equality
-
-    public void Deconstruct(out SysPath path, out String args)
-    {
-        path = Path;
-        args = Args;
-    }
-
-    public override String ToString() => $"{Path}{Args}";
-}

csharp/Lib/SysTools/SysDirs.cs

@@ -6,22 +6,9 @@ namespace InnovEnergy.Lib.SysTools;
 [Obsolete]
 public static class SysDirs
 {
-
+    public static SysPath CurrentDirectory => Environment.CurrentDirectory;
-    // TODO conditional compilation
+    public static SysPath TempDirectory    => Path.GetTempPath();
-
-    /*
-    public static SysPath ProgramDirectory => ExecutingAssemblyDirectory.Parent.Head == "bin" && (ExecutingAssemblyDirectory.Head == "Debug" || ExecutingAssemblyDirectory.Head == "Release")
-                                            ? ExecutingAssemblyDirectory.Parent.Parent
-                                            : ExecutingAssemblyDirectory;
-
-    public static SysPath ExecutingAssemblyDirectory => ExecutingAssembly.Parent;
-    public static SysPath ExecutingAssembly          => Assembly.GetExecutingAssembly().Location.Apply(SysPath.FromUri);
-    */
-    public static SysPath CurrentDirectory           => Environment.CurrentDirectory;
-    public static SysPath TempDirectory              => System.IO.Path.GetTempPath();
 
     public static SysPath UserHomeDirectory    { get; } = GetFolderPath(UserProfile);
     public static SysPath UserDesktopDirectory { get; } = GetFolderPath(DesktopDirectory);
-
-
 }

csharp/Lib/SysTools/SysPath.cs

@@ -1,11 +1,10 @@
 using System.Text;
-using InnovEnergy.Lib.SysTools.Remote;
+using InnovEnergy.Lib.Utils;
-using InnovEnergy.Lib.SysTools.Utils;
 using static System.IO.Path;
 
 namespace InnovEnergy.Lib.SysTools;
 
-[Obsolete("Needs rework before use")]
+
 public readonly struct SysPath
 {
     private readonly String _Path;
@@ -28,9 +27,9 @@ public readonly struct SysPath
             throw new ArgumentException(nameof(path));
 
         path = path
-            .Replace(@"\", "/")
+              .Replace(@"\", "/")
-            .Trim()
+              .Trim()
-            .TrimEnd('/');
+              .TrimEnd('/');
 
         if      (path.Length == 0)    _Path = "/";   // root
         else if (!path.Contains('/')) _Path = path;  // env
@@ -160,15 +159,15 @@ public readonly struct SysPath
         var path = _Path.Split();
 
         var prefixSize = Enumerable
-            .Zip(refPath, path, (l, r) => l == r)
+                        .Zip(refPath, path, (l, r) => l == r)
-            .TakeWhile(e => e)
+                        .TakeWhile(e => e)
-            .Count();
+                        .Count();
 
         var nUps = refPath.Length - prefixSize;
 
         var dirs = Enumerable
-            .Repeat("..", nUps)
+                  .Repeat("..", nUps)
-            .Concat(path.Skip(prefixSize));
+                  .Concat(path.Skip(prefixSize));
 
         var relative = String.Join(DirectorySeparatorChar.ToString(), dirs);
 
@@ -197,13 +196,12 @@ public readonly struct SysPath
         return $"{_Path}/{right}";
     }
 
-    public RemotePath At(SshHost host) => new RemotePath(host, this);
 
     #region overrides
 
-    public override Boolean Equals(Object obj) => _Path.Equals(obj?.ToString());
+    public override Boolean Equals(Object? obj) => _Path.Equals(obj?.ToString());
-    public override Int32   GetHashCode()      => _Path.GetHashCode();
+    public override Int32   GetHashCode()       => _Path.GetHashCode();
-    public override String  ToString()         => _Path;
+    public override String  ToString()          => _Path;
 
     #endregion
 

csharp/Lib/SysTools/Utils/ConsoleUtils.cs

@@ -1,74 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Utils;
-
-internal static class ConsoleUtils
-{
-    public static T WriteLine<T>(this T t, ConsoleColor color)
-    {
-        var c = Console.ForegroundColor;
-
-        Console.ForegroundColor = color;
-        Console.WriteLine(t);
-        Console.ForegroundColor = c;
-
-        return t;
-    }
-
-    public static T WriteLine<T>(this T t)
-    {
-        Console.WriteLine(t);
-        return t;
-    }
-
-    public static T WriteLine<T>(this T t, ConsoleColor color, params String[] more)
-    {
-        var c = Console.ForegroundColor;
-
-        Console.ForegroundColor = color;
-        Console.WriteLine(t + " " + more.JoinWith(" "));
-        Console.ForegroundColor = c;
-
-        return t;
-    }
-
-    public static T WriteLine<T>(this T t, params String[] more)
-    {
-        Console.WriteLine(t + " " + more.JoinWith(" "));
-        return t;
-    }
-
-
-    public static T Write<T>(this T t, ConsoleColor color)
-    {
-        var c = Console.ForegroundColor;
-
-        Console.ForegroundColor = color;
-        Console.Write(t);
-        Console.ForegroundColor = c;
-
-        return t;
-    }
-
-    public static T Write<T>(this T t)
-    {
-        Console.Write(t);
-        return t;
-    }
-
-    public static T Write<T>(this T t, ConsoleColor color, params String[] more)
-    {
-        var c = Console.ForegroundColor;
-
-        Console.ForegroundColor = color;
-        Console.Write(t + " " + more.JoinWith(" "));
-        Console.ForegroundColor = c;
-
-        return t;
-    }
-
-    public static T Write<T>(this T t, params String[] more)
-    {
-        Console.Write(t + " " + more.JoinWith(" "));
-        return t;
-    }
-
-}

csharp/Lib/SysTools/Utils/EnumerableUtils.cs

@@ -1,87 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Utils;
-
-internal static class EnumerableUtils
-{
-
-    public static IEnumerable<T> Pad<T>(this IEnumerable<T> src, Int32 length, T padding)
-    {
-        using var enumerator = src.GetEnumerator();
-        while (enumerator.MoveNext() && length-- > 0)
-            yield return enumerator.Current;
-
-        while (length-- > 0)
-            yield return padding;
-    }
-
-    public static Dictionary<T, IReadOnlyList<T>> IndexColumn<T>(this IEnumerable<IEnumerable<T>> src, UInt16 index)
-    {
-        var d = new Dictionary<T, IReadOnlyList<T>>();
-
-        foreach (var outer in src)
-        {
-            var inner = outer.ToList();
-            var key = inner[index];
-            d.Add(key, inner);
-        }
-
-        return d;
-    }
-
-
-    public static IEnumerable<(TLeft left, TRight right)> Zip<TLeft, TRight>(IEnumerable<TLeft> left,
-        IEnumerable<TRight> right)
-    {
-        using var l = left.GetEnumerator();
-        using var r = right.GetEnumerator();
-        while (l.MoveNext() && r.MoveNext())
-            yield return (l.Current, r.Current);
-    }
-
-    public static IEnumerator<T> Enumerator<T>(this T t)
-    {
-        yield return t;
-    }
-
-    public static IEnumerable<T> Enumerable<T>(this T t)
-    {
-        yield return t;
-    }
-
-    public static IEnumerable<T> Flatten<T>(this IEnumerable<IEnumerable<T>> src) => src.SelectMany(s => s);
-
-    public static void ForEach<T>(this IEnumerable<T> enumerable, Action<T> action)
-    {
-        foreach (var e in enumerable)
-            action(e);
-    }
-
-
-
-    public static IEnumerable<T> WhereNot<T>(this IEnumerable<T> enumerable, Func<T,Boolean> predicate)
-    {
-        return enumerable.Where(e => !predicate(e));
-    }
-
-
-    public static IEnumerable<T> EmptyIfNull<T>(this IEnumerable<T> enumerable)
-    {
-        return enumerable ?? new T[0];
-    }
-
-    // // https://stackoverflow.com/a/34006336/141397
-    // public static Int32 CombineHashes(this ITuple tupled, Int32 seed = 1009, Int32 factor = 9176)
-    // {
-    //     var hash = seed;
-    //
-    //     for (var i = 0; i < tupled.Length; i++)
-    //     {
-    //         unchecked
-    //         {
-    //             hash = hash * factor + tupled[i].GetHashCode();
-    //         }
-    //     }
-    //
-    //     return hash;
-    // }
-
-}

csharp/Lib/SysTools/Utils/StringUtils.cs

@@ -1,208 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Utils;
-
-internal static class StringUtils
-{
-
-    public static String NewLineBefore(this String s)
-    {
-        return Environment.NewLine + s;
-    }
-
-    public static String AddTitle(this String s, String title)
-    {
-        return title.Underline() + s;
-    }
-
-    public static String Underline(this String s)
-    {
-        return s.NewLine() + "".PadRight(s.Length, '-').NewLine(2);
-    }
-
-    public static Boolean IsNullOrEmpty(this String s)
-    {
-        return String.IsNullOrEmpty(s);
-    }
-
-    public static Boolean IsNullOrWhiteSpace(this String s)
-    {
-        return String.IsNullOrWhiteSpace(s);
-    }
-
-    public static String Format(this Object value, String fmt)
-    {
-        return String.Format(fmt, value);
-    }
-
-    public static String NewLine(this String s)
-    {
-        return s + Environment.NewLine;
-    }
-
-    public static String NewLine(this String s, Int32 number)
-    {
-        return Enumerable
-            .Repeat(Environment.NewLine, number)
-            .Aggregate(s, (a, b) => a + b);
-    }
-
-    public static String AppendSpaces(this String s, Int32 count = 4)
-    {
-        return s.PadRight(s.Length + count);
-    }
-
-    public static String Append(this String s, String other)
-    {
-        return s + other;
-    }
-
-    public static String Concat(this IEnumerable<String> ss)
-    {
-        return String.Join("", ss);
-    }
-
-    public static String SurroundWith(this String s, String before, String after = null)
-    {
-        return before + s + (after ?? before);
-    }
-
-
-    public static String ShellSingleQuote(this String s)
-    {
-        return $"'{s.Replace("'", @"'\''")}'";
-    }
-
-    public static String Quote(this String s)
-    {
-        return s.Replace(@"\", @"\\").Replace("\"", "\\\"").SurroundWith("\"");
-    }
-
-    public static String Join(this IEnumerable<String> strings)
-    {
-        return String.Join("", strings);
-    }
-
-    public static String JoinWith(this IEnumerable<String> strings, String separator)
-    {
-        return String.Join(separator, strings);
-    }
-
-    public static String JoinToLines(this IEnumerable<String> lines)
-    {
-        return String.Join(Environment.NewLine, lines);
-    }
-
-    public static String JoinToLines(params String[] lines)
-    {
-        return String.Join(Environment.NewLine, lines);
-    }
-
-    public static String Indent(this String text)
-    {
-        return "    ".SideBySideWith(text, "");
-    }
-
-    public static String Indent(this String text, String indentor)
-    {
-        return indentor.SideBySideWith(text);
-    }
-
-    public static IReadOnlyList<String> SplitLines(this String s)
-    {
-        return s.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
-    }
-
-    public static String SideBySideWith(this String left, String right, String separator = "      ")
-    {
-        var leftLines  = left .Split(new[] { Environment.NewLine }, StringSplitOptions.None).ToList();
-        var rightLines = right.Split(new[] { Environment.NewLine }, StringSplitOptions.None).ToList();
-
-        var leftWidth = leftLines.Count != 0
-            ? leftLines.Max(l => l.Length)
-            : 0;
-
-        var nLines = Math.Max(leftLines.Count, rightLines.Count);
-
-        var leftPadded  = leftLines .Pad(nLines, "").Select(l => l.PadRight(leftWidth));
-        var rightPadded = rightLines.Pad(nLines, "");
-
-        return Enumerable
-            .Zip(leftPadded, rightPadded, (l, r) => String.Join(separator, l, r))
-            .JoinToLines();
-    }
-
-
-    public static String JoinWith<T>(this IEnumerable<T> args, String separator)
-    {
-        return String.Join(separator, args);
-    }
-
-    public static IEnumerable<String> GetLinesStartingWith(this IEnumerable<String> lines, String prefix)
-    {
-        return lines.Where(l => l.StartsWith(prefix));
-    }
-
-    public static String GetLineStartingWith(this IEnumerable<String> lines, String prefix)
-    {
-        return lines
-            .GetLinesStartingWith(prefix)
-            .Single();
-    }
-
-
-
-    public static ILookup<String, String> ParseKeyValuesTextFile(this SysPath file)
-    {
-        var lines = file
-            .ReadLines()
-            .Select(l => l.Trim())
-            .Where(l => l.Length > 0 && !l.StartsWith("#") && !l.StartsWith(";"));
-
-        var keyValuePairs = from line in lines
-            let fields = line.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries)
-            let key = fields[0]
-            from value in fields.Skip(1)
-            select (key, value);
-
-        return keyValuePairs.ToLookup(e => e.key, e => e.value);
-    }
-
-    public static Boolean EndsWith(this String str, Char c)
-    {
-        if (str.Length <= 0)
-            return false;
-
-        return str[str.Length - 1] == c;
-    }
-
-    public static String CommonPrefix(String str, params String[] more)
-    {
-        var prefixLength = str
-            .TakeWhile((c, i) => more.All(s => i < s.Length && s[i] == c))
-            .Count();
-
-        return str.Substring(0, prefixLength);
-    }
-
-
-    public static String AfterFirst(this String str, Char separator)
-    {
-        return str.Substring(str.IndexOf(separator) + 1);
-    }
-
-    public static String AfterLast(this String str, Char separator)
-    {
-        return str.Substring(str.LastIndexOf(separator) + 1);
-    }
-
-    public static String UntilLast(this String str, Char separator)
-    {
-        return str.Substring(0, str.LastIndexOf(separator));
-    }
-
-    public static String UntilFirst(this String str, Char separator)
-    {
-        return str.Substring(0, str.IndexOf(separator));
-    }
-
-
-}

csharp/Lib/SysTools/Utils/Utils.cs

@@ -1,37 +0,0 @@
-namespace InnovEnergy.Lib.SysTools.Utils;
-
-public static class Utils
-{
-
-    private static readonly DateTime Epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
-
-    public static DateTime FromUnixTime(UInt64 unixTime)
-    {
-        return Epoch.AddSeconds(unixTime);
-    }
-
-    public static R ValueOrDefault<T, R>(this Dictionary<T, R> dict, T key)
-    {
-        return ValueOrDefault(dict, key, default);
-    }
-
-    public static R ValueOrDefault<T, R>(this Dictionary<T, R> dict, T key, R defaultValue)
-    {
-        return dict.TryGetValue(key, out var value) ? value : defaultValue;
-    }
-
-    public static void CopyFilesRecursively(String source, String target)
-    {
-        CopyFilesRecursively(new DirectoryInfo(source), new DirectoryInfo(target));
-    }
-
-    public static void CopyFilesRecursively(DirectoryInfo source, DirectoryInfo target)
-    {
-        foreach (var file in source.GetFiles())
-            file.CopyTo(Path.Combine(target.FullName, file.Name));
-
-        foreach (var dir in source.GetDirectories())
-            CopyFilesRecursively(dir, target.CreateSubdirectory(dir.Name));
-    }
-
-}

csharp/Lib/Time/Unix/UnixTime.Converters.cs

@@ -3,4 +3,7 @@ namespace InnovEnergy.Lib.Time.Unix;
 public readonly partial struct UnixTime
 {
     public DateTime ToUtcDateTime() => DateTime.UnixEpoch + TimeSpan.FromSeconds(Ticks);
+    
+    public static implicit operator DateTime(UnixTime unixTimeSpan) => unixTimeSpan.ToUtcDateTime();
+    public static implicit operator UnixTime(DateTime dateTime)     => FromUtcDateTime(dateTime);
 }

csharp/Lib/Time/Unix/UnixTimeSpan.Converters.cs

@@ -0,0 +1,9 @@
+namespace InnovEnergy.Lib.Time.Unix;
+
+public readonly partial struct UnixTimeSpan
+{
+    public TimeSpan ToTimeSpan() => TimeSpan.FromSeconds(Ticks);
+
+    public static implicit operator TimeSpan(UnixTimeSpan unixTimeSpan) => unixTimeSpan.ToTimeSpan();
+    public static implicit operator UnixTimeSpan(TimeSpan timeSpan)     => FromTimeSpan(timeSpan);
+}

csharp/Lib/Time/Unix/UnixTimeSpan.cs

@@ -4,8 +4,5 @@ public readonly partial struct UnixTimeSpan
 {
     public UInt32 Ticks { get; }
 
-    public TimeSpan ToTimeSpan()
+    
-    {
-        return TimeSpan.FromSeconds(Ticks);
-    }
 }

csharp/Lib/Time/Unix/UnixTimeSpanExtensions.cs

@@ -1,6 +1,6 @@
 namespace InnovEnergy.Lib.Time.Unix;
 
-public static class UnixTimeDeltaExtensions
+public static class UnixTimeSpanExtensions
 {
     public static UnixTimeSpan Seconds(this Int32 s) => UnixTimeSpan.FromSeconds(s);
     public static UnixTimeSpan Minutes(this Int32 m) => UnixTimeSpan.FromMinutes(m);

csharp/Lib/Units/Angle.cs

@@ -4,7 +4,7 @@ using InnovEnergy.Lib.Utils;
 
 namespace InnovEnergy.Lib.Units;
 
-[Sum]
+[Generate]
 public readonly partial struct Angle
 {
     public static String Unit   => "rad"; 

csharp/Lib/Units/Angle.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Angle;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(AngleConverter))]
 public readonly partial struct Angle
 {
@@ -22,40 +24,12 @@ public readonly partial struct Angle
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/ApparentPower.cs

@@ -2,7 +2,7 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-[Sum]
+[Generate]
 public readonly partial struct ApparentPower
 {
     public static String Unit   => "VA";

csharp/Lib/Units/ApparentPower.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = ApparentPower;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(ApparentPowerConverter))]
 public readonly partial struct ApparentPower
 {
@@ -22,40 +24,12 @@ public readonly partial struct ApparentPower
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Composite/Ac1Bus.cs

@@ -6,20 +6,20 @@ public record Ac1Bus : AcPhase
 {
     public  Frequency Frequency { get; init; }
 
-    [SuppressMessage("ReSharper", "RedundantCast")]
+    // [SuppressMessage("ReSharper", "RedundantCast")]
-    public static Ac1Bus operator |(Ac1Bus left, Ac1Bus right)
+    // public static Ac1Bus operator |(Ac1Bus left, Ac1Bus right)
-    {
+    // {
-        var f = left.Frequency | right.Frequency;
+    //     var f = left.Frequency | right.Frequency;
-        var p = (AcPhase)left | (AcPhase)right;
+    //     var p = (AcPhase)left | (AcPhase)right;
-
+    //
-        return new Ac1Bus
+    //     return new Ac1Bus
-        {
+    //     {
-            Frequency = f,
+    //         Frequency = f,
-            Current = p.Current,
+    //         Current = p.Current,
-            Voltage = p.Voltage,
+    //         Voltage = p.Voltage,
-            Phi = p.Phi
+    //         Phi = p.Phi
-        };
+    //     };
-    }
+    // }
 
 }
 

csharp/Lib/Units/Composite/AcPhase.cs

@@ -22,45 +22,45 @@ public record AcPhase : IBus
     public Angle   Phi { get; init; }
     
     public ApparentPower ApparentPower => Voltage.Value * Current.Value ;
-    public Power         ActivePower   => ApparentPower.Value * PowerFactor.Value;
+    public Power         ActivePower   => ApparentPower.Value * PowerFactor;
     public ReactivePower ReactivePower => ApparentPower.Value * Sin(Phi);
-    public Number        PowerFactor   => Cos(Phi);
+    public Decimal       PowerFactor   => Cos(Phi);
     
     
-    public static AcPhase operator |(AcPhase left, AcPhase right)
+    // public static AcPhase operator |(AcPhase left, AcPhase right)
-    {
+    // {
-        // the Voltages of two phases are expected to be in phase and equal
+    //     // the Voltages of two phases are expected to be in phase and equal
-
+    //
-        var v = left.Voltage | right.Voltage;  
+    //     var v = left.Voltage | right.Voltage;  
-        
+    //     
-        // currents (RMS) can be different and out of phase 
+    //     // currents (RMS) can be different and out of phase 
-        // https://www.johndcook.com/blog/2020/08/17/adding-phase-shifted-sine-waves/
+    //     // https://www.johndcook.com/blog/2020/08/17/adding-phase-shifted-sine-waves/
-        
+    //     
-        // IF
+    //     // IF
-        // left(t)  = ILeft sin(ωt)
+    //     // left(t)  = ILeft sin(ωt)
-        // right(t) = IRight sin(ωt + φ).
+    //     // right(t) = IRight sin(ωt + φ).
-        // sum(t)   = left(t) + right(t) = ISum sin(ωt + ψ).
+    //     // sum(t)   = left(t) + right(t) = ISum sin(ωt + ψ).
-        
+    //     
-        // THEN
+    //     // THEN
-        // ψ = arctan( IRight * sin(φ) / (ILeft + IRight cos(φ)) ).
+    //     // ψ = arctan( IRight * sin(φ) / (ILeft + IRight cos(φ)) ).
-        // C = IRight * sin(φ) / sin(ψ).
+    //     // C = IRight * sin(φ) / sin(ψ).
-                
+    //             
-        // in this calculation left(t) has zero phase shift.
+    //     // in this calculation left(t) has zero phase shift.
-        // we can shift both waves by -left.Phi, so
+    //     // we can shift both waves by -left.Phi, so
-        // φ := right.phi - left.phi
+    //     // φ := right.phi - left.phi
-
+    //
-
+    //
-        var phi    = right.Phi - left.Phi;
+    //     var phi    = right.Phi - left.Phi;
-        var phiSum = ATan2(right.Current * Sin(phi), left.Current + right.Current * Cos(phi));
+    //     var phiSum = ATan2(right.Current * Sin(phi), left.Current + right.Current * Cos(phi));
-        var iSum   = right.Current * Sin(phi) / Sin(phiSum);
+    //     var iSum   = right.Current * Sin(phi) / Sin(phiSum);
-
+    //
-        return new AcPhase
+    //     return new AcPhase
-        {
+    //     {
-           Voltage = v,
+    //        Voltage = v,
-           Current = iSum,
+    //        Current = iSum,
-           Phi     = phiSum
+    //        Phi     = phiSum
-        };
+    //     };
-    }
+    // }
 
     
 }

csharp/Lib/Units/Current.cs

@@ -2,8 +2,7 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-
+[Generate]
-[Sum]
 public readonly partial struct Current
 {
     public static String Unit   => "A";

csharp/Lib/Units/Current.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Current;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(CurrentConverter))]
 public readonly partial struct Current
 {
@@ -22,40 +24,12 @@ public readonly partial struct Current
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Energy.cs

@@ -1,10 +1,9 @@
 using InnovEnergy.Lib.Time.Unix;
 using InnovEnergy.Lib.Units.Generator;
 
-
 namespace InnovEnergy.Lib.Units;
 
-[Sum]
+[Generate]
 public readonly partial struct Energy
 {
     public static String Unit   => "kWh"; 

csharp/Lib/Units/Energy.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Energy;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(EnergyConverter))]
 public readonly partial struct Energy
 {
@@ -22,40 +24,12 @@ public readonly partial struct Energy
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Frequency.cs

@@ -2,7 +2,8 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-[Equal]
+
+[Generate]
 public readonly partial struct Frequency
 {
     public static String Unit   => "Hz"; 

csharp/Lib/Units/Frequency.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Equal
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Frequency;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(FrequencyConverter))]
 public readonly partial struct Frequency
 {
@@ -22,40 +24,12 @@ public readonly partial struct Frequency
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Generator/EqualAttribute.cs

@@ -1,5 +0,0 @@
-namespace InnovEnergy.Lib.Units.Generator;
-
-[AttributeUsage(AttributeTargets.Struct)]
-internal class EqualAttribute: Attribute
-{}

csharp/Lib/Units/Generator/GenerateAttribute.cs

@@ -0,0 +1,6 @@
+using System.Text.Json.Serialization;
+
+namespace InnovEnergy.Lib.Units.Generator;
+
+internal class GenerateAttribute : Attribute
+{}

csharp/Lib/Units/Generator/MeanAttribute.cs

@@ -1,5 +0,0 @@
-namespace InnovEnergy.Lib.Units.Generator;
-
-[AttributeUsage(AttributeTargets.Struct)]
-internal class MeanAttribute: Attribute
-{}

csharp/Lib/Units/Generator/SumAttribute.cs

@@ -1,5 +0,0 @@
-namespace InnovEnergy.Lib.Units.Generator;
-
-[AttributeUsage(AttributeTargets.Struct)]
-internal class SumAttribute: Attribute
-{}

csharp/Lib/Units/Generator/Template.txt

@@ -5,11 +5,13 @@ using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Template;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(TemplateConverter))]
 public readonly partial struct Template
 {
@@ -22,40 +24,12 @@ public readonly partial struct Template
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Generator/generate.sh

@@ -4,7 +4,7 @@
 scriptDir=$( dirname -- "$0"; )
 cd "$scriptDir/.." || exit 
 
-for match in $(grep -e '\[Sum\]\|\[Equal\]\|\[Mean\]' -o *.cs | tr -d '[]') 
+for match in $(grep -e '\[Generate\]' -o *.cs | tr -d '[]') 
 do
   path="${match%:*}"
   type="${match#*:}"

csharp/Lib/Units/Number.cs

@@ -1,13 +0,0 @@
-using InnovEnergy.Lib.Units.Generator;
-
-
-namespace InnovEnergy.Lib.Units;
-
-[Sum]
-public readonly partial struct Number
-{
-    public static String Unit   => ""; 
-    public static String Symbol => "";     
-
-    public Number(Decimal value) => Value = value;
-}

csharp/Lib/Units/Number.generated.cs

@@ -1,97 +0,0 @@
-#nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
-
-using static System.Math;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using InnovEnergy.Lib.Utils;
-
-namespace InnovEnergy.Lib.Units;
-
-using T = Number;
-
-[JsonConverter(typeof(NumberConverter))]
-public readonly partial struct Number
-{
-    public Decimal Value { get; }
-    public override String ToString() => Value.RoundToSignificantDigits(Units.DisplaySignificantDigits) + Unit;
-    
-    // scalar multiplication
-
-    public static T operator *(Decimal scalar, T t) => new T(scalar * t.Value);
-    public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
-    public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
-    
-    // parallel
-    
-    #if Sum
-    
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
-    // compare
-
-    public static Boolean operator ==(T left, T right) => left.Value == right.Value;
-    public static Boolean operator !=(T left, T right) => left.Value != right.Value;
-    public static Boolean operator > (T left, T right) => left.Value >  right.Value;
-    public static Boolean operator < (T left, T right) => left.Value <  right.Value;
-    public static Boolean operator >=(T left, T right) => left.Value >= right.Value;
-    public static Boolean operator <=(T left, T right) => left.Value <= right.Value;
-
-    // conversion
-
-    public static implicit operator T(Decimal d) => new T(d);
-    public static implicit operator T(Double d)  => new T((Decimal)d);
-    public static implicit operator T(Int32 i)   => new T(i);
-    public static implicit operator Decimal(T t) => t.Value;
-
-    // equality
-
-    public Boolean Equals(T other) => Value == other.Value;
-    public override Boolean Equals(Object? obj) => obj is T other && Equals(other);
-    public override Int32 GetHashCode() => Value.GetHashCode();
-
-}
-
-
-internal class NumberConverter : JsonConverter<Number>
-{
-    public override Number Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-    {
-        return new Number(reader.GetDecimal());
-    }
-
-    public override void Write(Utf8JsonWriter writer, Number value, JsonSerializerOptions options)
-    {
-        var rounded = value.Value.RoundToSignificantDigits(Units.JsonSignificantDigits);
-
-        writer.WriteNumberValue(rounded);
-    }
-}

csharp/Lib/Units/Percent.cs

@@ -1,43 +1,12 @@
+using InnovEnergy.Lib.Units.Generator;
+
 namespace InnovEnergy.Lib.Units;
 
-using T = Percent;
+[Generate]
-
+public readonly partial struct Percent
-public readonly struct Percent
 {
     public static String Unit   => "%"; 
     public static String Symbol => "%"; // ??
 
     public Percent(Decimal value) => Value = value;
-
-    // not generated
-    // TODO: generate?
-    
-    public Decimal Value { get; }
-    public override String ToString() => Value + Unit;
-    
-    // scalar multiplication
-    public static Decimal operator *(Decimal scalar, T t) => scalar * t.Value / 100m;
-    public static Decimal operator *(T t, Decimal scalar) => scalar * t.Value / 100m;
-
-    // parallel
-    public static Percent operator |(T left, T right) => new T((left.Value + right.Value) / 2m);
-    
-    // compare
-    public static Boolean operator ==(T left, T right) => left.Value == right.Value;
-    public static Boolean operator !=(T left, T right) => left.Value != right.Value;
-    public static Boolean operator > (T left, T right) => left.Value >  right.Value;
-    public static Boolean operator < (T left, T right) => left.Value <  right.Value;
-    public static Boolean operator >=(T left, T right) => left.Value >= right.Value;
-    public static Boolean operator <=(T left, T right) => left.Value <= right.Value;
-
-    // conversion
-    public static implicit operator T(Decimal d) => new T(d);
-    public static implicit operator T(Double d)  => new T((Decimal)d);
-    public static implicit operator T(Int32 i)   => new T(i);
-    public static implicit operator Decimal(T t) => t.Value;
-
-    // equality
-    public Boolean Equals(T other) => Value == other.Value;
-    public override Boolean Equals(Object? obj) => obj is T other && Equals(other);
-    public override Int32 GetHashCode() => Value.GetHashCode();
 }

csharp/Lib/Units/Power.cs

@@ -1,10 +1,9 @@
-
 using InnovEnergy.Lib.Time.Unix;
 using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-[Sum]
+[Generate]
 public readonly partial struct Power
 {
     public static String Unit   => "W";

csharp/Lib/Units/Power.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Power;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(PowerConverter))]
 public readonly partial struct Power
 {
@@ -22,40 +24,12 @@ public readonly partial struct Power
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/ReactivePower.cs

@@ -3,7 +3,7 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-[Sum]
+[Generate]
 public readonly partial struct ReactivePower
 {
     public static String Unit   => "var";

csharp/Lib/Units/ReactivePower.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = ReactivePower;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(ReactivePowerConverter))]
 public readonly partial struct ReactivePower
 {
@@ -22,40 +24,12 @@ public readonly partial struct ReactivePower
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Resistance.cs

@@ -3,9 +3,8 @@ using InnovEnergy.Lib.Units.Generator;
 namespace InnovEnergy.Lib.Units;
 
 
-// TODO: op parallel is wrong
 
-[Sum]
+[Generate]
 public readonly partial struct Resistance
 {
     public static String Unit   => "Ω";

csharp/Lib/Units/Resistance.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Sum
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Resistance;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(ResistanceConverter))]
 public readonly partial struct Resistance
 {
@@ -22,40 +24,12 @@ public readonly partial struct Resistance
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/State.cs

@@ -1,44 +0,0 @@
-using System.Collections;
-
-namespace InnovEnergy.Lib.Units;
-
-public readonly struct State : IReadOnlyList<String>
-{
-    public IReadOnlyList<String> Values { get; }
-    
-    public State(IReadOnlyList<String> values)
-    {
-        if (values.Any(v => v.Contains(";")))
-            throw new ArgumentException("State values cannot contain the character ;", nameof(values));
-        
-        Values = values;
-    }
-
-    public State(params String[] values) : this((IReadOnlyList<String>)values){}
-    public State(params State[]  states) : this((IReadOnlyList<String>)states.SelectMany(s => s.Values).ToList()){}
-
-    public static implicit operator State(String s)       => new(s);
-    public static implicit operator State(Enum e)         => new(e.ToString());
-    public static implicit operator State(Boolean s)      => new(s.ToString());
-    public static implicit operator State(List<String> s) => new((IReadOnlyList<String>)s);
-    public static implicit operator State(String[] s)     => new((IReadOnlyList<String>)s);
-    public static implicit operator State(List<Enum> es)  => new(es.Select(e => e.ToString()).ToList());
-    public static implicit operator State(Enum[] es)      => new(es.Select(e => e.ToString()).ToList());
-    
-    public static State operator |(State left, State right) => new(left, right);
-
-    public IEnumerator<String> GetEnumerator() => Values.GetEnumerator();
-
-    public override String ToString() => String.Join("; ", Values);
-    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
-
-    public Int32 Count => Values.Count;
-    public String this[Int32 index] => Values[index];
-
-    public static State<T> From<T>(T t) where T : Enum
-    {
-        return new State<T>(t);
-    }
-}
-
-

csharp/Lib/Units/StateOfT.cs

@@ -1,27 +0,0 @@
-using System.Collections;
-
-namespace InnovEnergy.Lib.Units;
-
-public readonly struct State<T> : IReadOnlyList<T> where T:Enum
-{
-    public IReadOnlyList<T> Values { get; }
-    
-    public State(IReadOnlyList<T> values) => Values = values;
-
-    public State(params T[] values) : this((IReadOnlyList<T>)values){}
-    public State(params State<T>[] states) : this((IReadOnlyList<T>)states.SelectMany(s => s.Values).ToList()){}
-
-    public static implicit operator State<T>(T s)       => new((IReadOnlyList<T>)s);
-    public static implicit operator State<T>(List<T> s) => new((IReadOnlyList<T>)s);
-    public static implicit operator State<T>(T[] s)     => new((IReadOnlyList<T>)s);
-    
-    public static State<T> operator |(State<T> left, State<T> right) => new State<T>(left, right);
-
-    public IEnumerator<T> GetEnumerator() => Values.GetEnumerator();
-
-    public override String ToString() => String.Join("; ", Values);
-    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
-
-    public Int32 Count => Values.Count;
-    public T this[Int32 index] => Values[index];
-}

csharp/Lib/Units/Temperature.cs

@@ -2,14 +2,14 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-using T=Temperature;
+using T = Temperature;
 
-[Mean]
+
+[Generate]
 public readonly partial struct Temperature
 {
     public static String Unit   => "°C";
     public static String Symbol => "T";
     
     public Temperature(Decimal value) => Value = value;
-    
 }

csharp/Lib/Units/Temperature.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Mean
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Temperature;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(TemperatureConverter))]
 public readonly partial struct Temperature
 {
@@ -22,40 +24,12 @@ public readonly partial struct Temperature
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Units/Units.cs

@@ -21,18 +21,14 @@ public static class Units
     public static Byte DisplaySignificantDigits { get; set; } = 3;
     public static Byte JsonSignificantDigits    { get; set; } = 3;
     
-    
+    public static Current       A      (this Decimal value) => value;
-    public const Decimal MaxRelativeError = 0.05m; // 5%
+    public static Voltage       V      (this Decimal value) => value;
-    
+    public static Power         W      (this Decimal value) => value;
-    public static Current       A      (this Decimal value) => new Current(value);
+    public static ReactivePower Var    (this Decimal value) => value;
-    public static Voltage       V      (this Decimal value) => new Voltage(value);
+    public static ApparentPower Va     (this Decimal value) => value;
-    public static Power         W      (this Decimal value) => new Power(value);
+    public static Resistance    Ohm    (this Decimal value) => value;
-    public static ReactivePower Var    (this Decimal value) => new ReactivePower(value);
+    public static Frequency     Hz     (this Decimal value) => value;
-    public static ApparentPower Va     (this Decimal value) => new ApparentPower(value);
+    public static Angle         Rad    (this Decimal value) => value;
-    public static Resistance    Ohm    (this Decimal value) => new Resistance(value);
+    public static Temperature   Celsius(this Decimal value) => value;
-    public static Frequency     Hz     (this Decimal value) => new Frequency(value);
+    public static Energy        KWh    (this Decimal value) => value;
-    public static Angle         Rad    (this Decimal value) => new Angle(value);
-    public static Temperature   Celsius(this Decimal value) => new Temperature(value);
-
-    
 }

csharp/Lib/Units/Voltage.cs

@@ -2,7 +2,8 @@ using InnovEnergy.Lib.Units.Generator;
 
 namespace InnovEnergy.Lib.Units;
 
-[Equal]
+
+[Generate]
 public readonly partial struct Voltage
 {
     public static String Unit   => "V";

csharp/Lib/Units/Voltage.generated.cs

@@ -1,15 +1,17 @@
 #nullable enable // Auto-generated code requires an explicit '#nullable' directive in source.
-#define Equal
+#define Generate
 
 using static System.Math;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using InnovEnergy.Lib.Utils;
+using System.CodeDom.Compiler;
 
 namespace InnovEnergy.Lib.Units;
 
 using T = Voltage;
 
+[GeneratedCode("generate.sh", "1")]
 [JsonConverter(typeof(VoltageConverter))]
 public readonly partial struct Voltage
 {
@@ -22,40 +24,12 @@ public readonly partial struct Voltage
     public static T operator *(T t, Decimal scalar) => new T(scalar * t.Value);
     public static T operator /(T t, Decimal scalar) => new T(t.Value / scalar);
     
-    // parallel
+    // addition
     
-    #if Sum
+    public static T operator +(T left, T right) => new T(left.Value + right.Value);
+    public static T operator -(T left, T right) => new T(left.Value - right.Value);
+    public static T operator -(T t) => new T(-t.Value);
     
-    public static T operator |(T left, T right) => new T(left.Value + right.Value);
-    public static T operator -(T t)             => new T(-t.Value);
-    
-    #elif Mean
-    
-    public static T operator |(T left, T right) => new T((left.Value + right.Value)/2m);
-    
-    #elif Equal
-    
-    public static T operator |(T left, T right)
-    {
-        var d = Max(Abs(left.Value), Abs(right.Value));
-
-        if (d == 0m)
-            return new T(0m);
-
-        var relativeError = Abs(left.Value - right.Value) / d;
-
-        const Decimal maxRelativeError = 0.05m;
-        
-        if (relativeError > maxRelativeError)
-            throw new Exception($"{nameof(left)} and {nameof(right)} must be approximately equal.\n" +
-                                $"Difference > {maxRelativeError * 100}% detected\n" +
-                                $"{nameof(left)} : {left}\n" +
-                                $"{nameof(right)}: {right}");
-
-        return new T((left.Value + right.Value) / 2m);
-    }    
-    #endif
-
     // compare
 
     public static Boolean operator ==(T left, T right) => left.Value == right.Value;

csharp/Lib/Utils/StringUtils.cs

@@ -352,6 +352,34 @@ public static class StringUtils
     }
 
 
+    public static String TrimStart(this String target, String trimString)
+    {
+        if (String.IsNullOrEmpty(trimString)) return target;
+
+        var result = target;
+        while (result.StartsWith(trimString))
+            result = result[trimString.Length..];
+
+        return result;
+    }
+
+
+    public static String TrimEnd(this String target, String trimString)
+    {
+        if (String.IsNullOrEmpty(trimString)) 
+            return target;
+
+        var result = target;
+        while (result.EndsWith(trimString))
+            result = result[..^trimString.Length];
+
+        return result;
+    }
+
+    public static String EnsureStartsWith(this String target, String prefix)
+    {
+        return $"{prefix}{target.TrimStart(prefix)}";
+    }
 
 
 }