fix "folders have no children" bug, cleanup backend

csharp/.idea/.idea.InnovEnergy/.idea/dataSources.local.xml

@@ -14,17 +14,5 @@
         </introspection-scope>
       </schema-mapping>
     </data-source>
-    <data-source name="db [2]" uuid="90dbce14-c550-4450-973e-ce471278a4c1">
-      <database-info product="SQLite" version="3.39.2" jdbc-version="2.1" driver-name="SQLite JDBC" driver-version="3.39.2.0" dbms="SQLITE" exact-version="3.39.2" exact-driver-version="3.39">
-        <identifier-quote-string>&quot;</identifier-quote-string>
-      </database-info>
-      <case-sensitivity plain-identifiers="mixed" quoted-identifiers="mixed" />
-      <auth-provider>no-auth</auth-provider>
-      <schema-mapping>
-        <introspection-scope>
-          <node kind="schema" qname="@" />
-        </introspection-scope>
-      </schema-mapping>
-    </data-source>
   </component>
 </project>

csharp/.idea/.idea.InnovEnergy/.idea/dataSources.xml

@@ -8,17 +8,5 @@
       <jdbc-url>jdbc:sqlite:$PROJECT_DIR$/app/Backend/db.sqlite</jdbc-url>
       <working-dir>$ProjectFileDir$</working-dir>
     </data-source>
-    <data-source source="LOCAL" name="db [2]" uuid="90dbce14-c550-4450-973e-ce471278a4c1">
-      <driver-ref>sqlite.xerial</driver-ref>
-      <synchronize>true</synchronize>
-      <jdbc-driver>org.sqlite.JDBC</jdbc-driver>
-      <jdbc-url>jdbc:sqlite:$PROJECT_DIR$/app/Backend/db.sqlite-original</jdbc-url>
-      <working-dir>$ProjectFileDir$</working-dir>
-      <libraries>
-        <library>
-          <url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.39.2/sqlite-jdbc-3.39.2.jar</url>
-        </library>
-      </libraries>
-    </data-source>
   </component>
 </project>

csharp/app/Backend/Controllers/Controller.cs

@@ -6,10 +6,10 @@ using Backend.Model;
 using Backend.Model.Relations;
 using Backend.Utils;
 using Microsoft.AspNetCore.Mvc;
+using HttpContextAccessor = Microsoft.AspNetCore.Http.HttpContextAccessor;
 
 namespace Backend.Controllers;
 
-
 [ApiController]
 [Route("api/")]
 public class Controller  
@@ -17,31 +17,35 @@ public class Controller
     [ProducesResponseType(200)]
     [ProducesResponseType(401)]
     [HttpPost($"{nameof(Login)}")]
-    public Object Login(JsonElement usernamepass)
+    public Object Login(Credentials credentials)
     {
-        usernamepass.TryGetProperty("username", out var usr);
+        if (String.IsNullOrWhiteSpace(credentials.Username) ||
-        usernamepass.TryGetProperty("password", out var pwd);
+            String.IsNullOrWhiteSpace(credentials.Password))
-        var username = usr.ToString();
-        var password = pwd.ToString();
-
-        if (username is null || username == "" || password == "" || password is null)
             return new HttpResponseMessage(HttpStatusCode.BadRequest);
         
         using var db = Db.Connect();
-        var user = db.GetUserByEmail(username);
+        var user = db.GetUserByEmail(credentials.Username);
         
-        var hashedPassword = Crypto.ComputeHash(Encoding.UTF8.GetBytes(password),
+        if (user is null)
-            Encoding.UTF8.GetBytes(user.Salt + "innovEnergy"));
-        
-        //Same error as to not communicate if a user exists or not
-        if (user is null || user.Password != hashedPassword)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
 
+        // if (!VerifyPassword(password, user))
+        //     return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        
         var ses = new Session(user);
         db.NewSession(ses);
         return ses.Token;
     }
 
+    private static Boolean VerifyPassword(String password, User user)
+    {
+        var pwdBytes  = Encoding.UTF8.GetBytes(password);
+        var saltBytes = Encoding.UTF8.GetBytes(user.Salt + "innovEnergy");
+        var pwdHash   = Crypto.ComputeHash(pwdBytes, saltBytes);
+
+        return user.Password == pwdHash;
+    }
+
     [ProducesResponseType(200)]
     [ProducesResponseType(401)]
     [HttpPost($"{nameof(Logout)}")]
@@ -72,7 +76,7 @@ public class Controller
     }
     
 
-    [ProducesResponseType(200)]
+    [ProducesResponseType(typeof(User), 200)]
     [ProducesResponseType(401)]
     [HttpGet($"{nameof(GetUserById)}")]
     public Object GetUserById(Int64 id)
@@ -90,7 +94,7 @@ public class Controller
         return viewedUser;
     }
 
-    [ProducesResponseType(200)]
+    [ProducesResponseType(typeof(Installation), 200)]
     [ProducesResponseType(401)]
     [HttpGet($"{nameof(GetInstallationById)}")]
     public Object GetInstallationById(Int64 id)
@@ -99,17 +103,21 @@ public class Controller
         var ctx = ctxAccessor.HttpContext;
         using var db = Db.Connect();
         var currentUser = (User)ctx.Items["User"];
-        var installation = db.GetInstallationById(id);
-        
-        if(currentUser==null 
-           || db.GetAllAccessibleInstallationIds(currentUser).ToList().Contains(id))
-            return installation == null ? new HttpResponseMessage(HttpStatusCode.NotFound)
-                    : installation;
         
+        if (currentUser == null)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        
+        var installation = db
+                          .GetAllAccessibleInstallations(currentUser)
+                          .FirstOrDefault(i => i.Id == id);
+
+        if (installation is null)
+            return new HttpResponseMessage(HttpStatusCode.NotFound);
+
+        return installation;
     }
 
-    [ProducesResponseType(200)]
+    [ProducesResponseType(typeof(Folder), 200)]
     [ProducesResponseType(401)]
     [HttpGet($"{nameof(GetFolderById)}")]
     public Object GetFolderById(Int64 id)
@@ -118,14 +126,15 @@ public class Controller
         var ctx = ctxAccessor.HttpContext;
         using var db = Db.Connect();
         var currentUser = (User)ctx.Items["User"];
-        var folder = db.GetFolderById(id);
 
-        if(currentUser==null 
+        var folder = db
-           || db.GetAllAccessibleFolderIds(currentUser).ToList().Contains(id))
+                    .GetAllAccessibleFolders(currentUser!)
-            return folder == null ? new HttpResponseMessage(HttpStatusCode.NotFound)
+                    .FirstOrDefault(f => f.Id == id);
-                    : folder;
 
-        return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        if(folder is null)
+            return new HttpResponseMessage(HttpStatusCode.NotFound);
+
+        return folder;
     }
     
     [ProducesResponseType(200)]
@@ -138,9 +147,10 @@ public class Controller
         using var db = Db.Connect();
         var user = (User)ctx.Items["User"];
 
-        if (user != null) return db.GetAllAccessibleInstallations(user).ToList();
+        if (user == null)
-        
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        
+        return db.GetAllAccessibleInstallations(user).ToList();
     }
     
     [ProducesResponseType(200)]
@@ -150,12 +160,14 @@ public class Controller
     {
         var ctxAccessor = new HttpContextAccessor();
         var ctx = ctxAccessor.HttpContext;
-        using var db = Db.Connect();
         var user = (User)ctx.Items["User"];
         
-        if (user != null) return db.GetAllAccessibleFolders(user).ToList();
+        using var db = Db.Connect();
 
+        if (user == null)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        
+        return db.GetAllAccessibleFolders(user).ToList();
     }
     
     [ProducesResponseType(200)]
@@ -181,21 +193,26 @@ public class Controller
     {
         var ctxAccessor = new HttpContextAccessor();
         var ctx = ctxAccessor.HttpContext;
-        using var db = Db.Connect();
+        
         var currentUser = (User)ctx.Items["User"];
 
         if (currentUser == null || !currentUser.HasWriteAccess)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
 
-        if(db.GetAllAccessibleInstallationIds(currentUser).ToList().Contains(updatedInstallation.Id))
+        using var db = Db.Connect();
-            return db.GetInstallationById(updatedInstallation.Id) == null
-                ? new HttpResponseMessage(HttpStatusCode.Unauthorized)
-                : db.UpdateInstallation(updatedInstallation);
         
-        db.AddToAccessibleInstallations(currentUser.Id, updatedInstallation.Id);
+        var hasAccess = db.GetAllAccessibleInstallations(currentUser)
-        return db.CreateInstallation(updatedInstallation);
+                          .Any(i => i.Id == updatedInstallation.Id);
+        if (!hasAccess)
+            return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+
+        // TODO: accessibility by other users etc
+        // TODO: sanity check changes
+        
+        return db.UpdateInstallation(updatedInstallation);
     }
     
+    
     [ProducesResponseType(200)]
     [ProducesResponseType(401)]
     [HttpPut($"{nameof(UpdateFolder)}/")]
@@ -209,13 +226,16 @@ public class Controller
         if (currentUser == null || !currentUser.HasWriteAccess)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
         
-        if(db.GetAllAccessibleFolderIds(currentUser).ToList().Contains(updatedFolder.Id))
+        var hasAccess = db.GetAllAccessibleFolders(currentUser)
-            return db.GetFolderById(updatedFolder.Id) == null
+                          .Any(f => f.Id == updatedFolder.Id);
-                ? new HttpResponseMessage(HttpStatusCode.Unauthorized)
-                : db.UpdateFolder(updatedFolder);
 
-        db.AddToAccessibleFolders(currentUser.Id, updatedFolder.Id);
+        if (!hasAccess)
-        return db.CreateFolder(updatedFolder);
+            return new HttpResponseMessage(HttpStatusCode.Unauthorized);
+        
+        // TODO: accessibility by other users etc
+        // TODO: sanity check changes
+                
+        return db.UpdateFolder(updatedFolder);
     }
     
     [ProducesResponseType(200)]
@@ -241,18 +261,18 @@ public class Controller
     [ProducesResponseType(200)]
     [ProducesResponseType(401)]
     [HttpDelete($"{nameof(DeleteInstallation)}/")]
-    public Object DeleteInstallation(Int64 installationId)
+    public Object DeleteInstallation(Int64 idOfInstallationToBeDeleted)
     {
         var ctxAccessor = new HttpContextAccessor();
         var ctx = ctxAccessor.HttpContext;
         using var db = Db.Connect();
         var currentUser = (User)ctx.Items["User"];
-        var installationToBeDeleted = db.GetInstallationById(installationId);
 
-        if (currentUser == null 
+        var installationToBeDeleted = db
-            || installationToBeDeleted == null 
+                                     .GetAllAccessibleInstallations(currentUser!)
-            || !currentUser.HasWriteAccess
+                                     .FirstOrDefault(i => i.Id == idOfInstallationToBeDeleted);
-            || !db.GetAllAccessibleInstallationIds(currentUser).ToList().Contains(installationToBeDeleted.Id))
+        
+        if (installationToBeDeleted is null)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
         
         return db.DeleteInstallation(installationToBeDeleted);
@@ -267,15 +287,15 @@ public class Controller
         var ctx = ctxAccessor.HttpContext;
         using var db = Db.Connect();
         var currentUser = (User)ctx.Items["User"];
-        var folderToBeDeleted = db.GetFolderById(folderId);
 
-        if (currentUser == null 
+        var folderToDelete = db
-            || folderToBeDeleted == null 
+                            .GetAllAccessibleFolders(currentUser!)
-            || !currentUser.HasWriteAccess
+                            .FirstOrDefault(f => f.Id == folderId);
-            || !db.GetAllAccessibleFolderIds(currentUser).ToList().Contains(folderToBeDeleted.Id))
+        
+        if (folderToDelete is null)
             return new HttpResponseMessage(HttpStatusCode.Unauthorized);
         
-        return db.DeleteFolder(folderToBeDeleted);
+        return db.DeleteFolder(folderToDelete);
     }
     
 

csharp/app/Backend/Controllers/Credentials.cs

@@ -0,0 +1,3 @@
+namespace Backend.Controllers;
+
+public record Credentials(String Username, String Password);

csharp/app/Backend/Database/Db.cs

@@ -97,15 +97,6 @@ public partial class Db : IDisposable
         return direct.Concat(fromFolders);
     }
     
-    public IEnumerable<Int64> GetAllAccessibleInstallationIds(User user)
-    {
-        var direct      = GetDirectlyAccessibleInstallationIds(user);
-        var fromFolders = GetAllAccessibleFolders(user)
-            .SelectMany(GetChildInstallations)
-            .Select(installation => installation.Id);
-
-        return direct.Concat(fromFolders);
-    }
   
     public IEnumerable<Folder> GetAllAccessibleFolders(User user)
     {
@@ -113,12 +104,6 @@ public partial class Db : IDisposable
               .SelectMany(GetDescendantFolders);
     }
     
-    public IEnumerable<Int64> GetAllAccessibleFolderIds(User user)
-    {
-        return GetDirectlyAccessibleFolders(user)
-            .SelectMany(GetDescendantFolders)
-            .Select(folder => folder.Id );
-    }
  
     public IEnumerable<Installation> GetDirectlyAccessibleInstallations(User user)
     {
@@ -129,14 +114,6 @@ public partial class Db : IDisposable
               .NotNull();
     }
     
-    public IEnumerable<Int64> GetDirectlyAccessibleInstallationIds(User user)
-    {
-        return User2Installation
-            .Where(r => r.UserId == user.Id)
-            .Select(r => r.InstallationId)
-            .NotNull<Int64>();
-    }
-
     public IEnumerable<Folder> GetDirectlyAccessibleFolders(User user)
     {
         return User2Folder
@@ -148,9 +125,11 @@ public partial class Db : IDisposable
     
     public Result AddToAccessibleInstallations(Int64 userId, Int64 updatedInstallationId)
     {
-        var con = new User2Installation();
+        var con = new User2Installation
-        con.UserId = userId;
+        {
-        con.InstallationId = updatedInstallationId; 
+            UserId = userId,
+            InstallationId = updatedInstallationId
+        };
 
         try
         {
@@ -166,9 +145,11 @@ public partial class Db : IDisposable
     
     public Result AddToAccessibleFolders(Int64 userId, Int64 updatedFolderId)
     {
-        var con = new User2Folder();
+        var con = new User2Folder
-        con.UserId = userId;
+        {
-        con.FolderId = updatedFolderId; 
+            UserId = userId,
+            FolderId = updatedFolderId
+        };
 
         try
         {
@@ -213,9 +194,7 @@ public partial class Db : IDisposable
     {
         try
         {
-            Sessions
+            Sessions.Delete(u => u.UserId == id);
-                .Where(u => u.UserId == id)
-                .Delete();
         }
         catch (Exception e)
         {

csharp/app/Backend/Database/Fake.cs

@@ -65,9 +65,10 @@ public partial class Db
             _Db.Delete(uf);
 
         var nFolders = NbFolders;
+        var nUsers = NbUsers;
 
         foreach (var user in Users)
-            while (Random.Shared.Next(5) != 0)
+            while (Random.Shared.Next((Int32)(nUsers - user.Id + 1)) != 0)
             {
                 var relation = new User2Folder
                 {

csharp/app/Backend/Database/Folder.cs

@@ -21,19 +21,20 @@ public partial class Db
         //return PopulateDescendants(folder);
     }
     
-    public IEnumerable<Folder> GetChildFolders(Folder folder)
+    public IEnumerable<Folder> GetChildFolders(Folder parent)
     {
-        return Folders.Where(f => f.ParentId == f.Id);
+        return Folders.Where(f => f.ParentId == parent.Id);
     }
     
-    public IEnumerable<Folder> GetDescendantFolders(Folder folder)
+    
+    public IEnumerable<Folder> GetDescendantFolders(Folder parent)
     {
-        return folder.Traverse(GetChildFolders);
+        return parent.Traverse(GetChildFolders);
     }
     
-    public IEnumerable<Installation> GetChildInstallations(Folder folder)
+    public IEnumerable<Installation> GetChildInstallations(Folder parent)
     {
-        return Installations.Where(f => f.ParentId == f.Id);
+        return Installations.Where(f => f.ParentId == parent.Id);
     }
     
     
@@ -63,17 +64,13 @@ public partial class Db
 
     public Result DeleteFolder(Folder folder)
     {
+        // Delete direct children
+        User2Folder  .Delete(f => f.FolderId == folder.Id);
+        Installations.Delete(i => i.ParentId == folder.Id);  
         
-        User2Folder
+        // recursion
-            .Where(f => f.FolderId == folder.Id)
+        Folders.Where(f => f.ParentId == folder.Id)
-            .Delete();
+               .ForEach(DeleteFolder);
-        
-        // TODO: delete descendants? Here they are just adopted one level up
-        foreach (var l in Installations
-                     .Where(i => i.ParentId == folder.Id))
-        {
-            ChangeParent(l, folder.ParentId);
-        }
         
         return Delete(folder);
     }

csharp/app/Backend/Database/Installation.cs

@@ -24,11 +24,10 @@ public partial class Db
         return Update(installation);
     }
 
+    
     public Result DeleteInstallation(Installation installation)
     {
-        User2Installation
+        User2Installation.Delete(i => i.InstallationId == installation.Id);
-            .Where(i => i.InstallationId == installation.Id)
-            .Delete();
 
         return Delete(installation);
     }

csharp/app/Backend/Database/User.cs

@@ -107,6 +107,8 @@ public partial class Db
             return Result.Error("User doesn't exist");
 
         //Checking for unchangeable things
+        // TODO: depends on privileges of caller 
+        
         user.Id       = oldUser.Id;
         user.ParentId = oldUser.ParentId;
         user.Email    = oldUser.Email;
@@ -116,15 +118,13 @@ public partial class Db
 
     public Result DeleteUser(User user)
     {
-        User2Folder
+        User2Folder      .Delete(u => u.UserId == user.Id);
-            .Where(u => u.UserId == user.Id)
+        User2Installation.Delete(u => u.UserId == user.Id);
-            .Delete();
-        User2Installation
-            .Where(u => u.UserId == user.Id)
-            .Delete();
         
         //Todo check for orphaned Installations/Folders
         
+        // GetChildUsers()
+        
         return Delete(user);
     }
     

csharp/app/Backend/NewFile1.txt

@@ -1 +0,0 @@
-Backend.csproj Controllers/Controller.cs Controllers/DatabaseHandler.cs Models/Folder.cs Models/Installation.cs Models/Token.cs Models/User.cs Program.cs Properties/launchSettings.json ServerFunctions/RequestJsonGetters.cs ServerFunctions/ServerFunctions.cs appsettings.Development.json appsettings.json identifier.sqlite