Merge remote-tracking branch 'origin/main'

csharp/App/Backend/DataTypes/Installation.cs

@@ -15,10 +15,10 @@ public class Installation : TreeNode
     public Double Lat  { get; set; }
     public Double Long { get; set; }
     
-    public String S3Region   { get; set; } = "";
+    public String S3Region      { get; set; } = "";
-    public String S3Provider { get; set; } = "";
+    public String S3Provider    { get; set; } = "";
-    public String S3WriteKey      { get; set; } = "";
+    public String S3WriteKey    { get; set; } = "";
-    public String S3Key      { get; set; } = "";
+    public String S3Key         { get; set; } = "";
-    public String S3WriteSecret   { get; set; } = "";
+    public String S3WriteSecret { get; set; } = "";
-    public String S3Secret   { get; set; } = "";
+    public String S3Secret      { get; set; } = "";
 }   

csharp/App/Collector/Collector.csproj

@@ -13,7 +13,7 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="System.Linq.Async" Version="5.0.0" />
+      <PackageReference Include="System.Linq.Async" Version="6.0.1" />
     </ItemGroup>
 
 </Project>

csharp/App/RemoteSupportConsole/Program.cs

@@ -134,7 +134,7 @@ public static class Program
                 var company = x.LastOrDefault()?.Split('(').FirstOrDefault()?.Trim() ?? "";
                 var sn = x.LastOrDefault()?.Split('(').LastOrDefault()?.Trim("() ".ToCharArray()) ?? "";
 
-                var created = i.Created.ToUtcDateTime().ToString("dd.MM.yyyy HH:mm");
+                var created = i.Created.DateTimeFromUnixTime().ToString("dd.MM.yyyy HH:mm");
 
                 var line = new[]
                 {

csharp/App/SaliMax/SaliMax.csproj

@@ -18,7 +18,6 @@
       <ProjectReference Include="../../Lib/Devices/Trumpf/SystemControl/SystemControl.csproj" />
       <ProjectReference Include="../../Lib/Devices/Trumpf/TruConvertAc/TruConvertAc.csproj" />
       <ProjectReference Include="../../Lib/Devices/Trumpf/TruConvertDc/TruConvertDc.csproj" />
-      <ProjectReference Include="../../Lib/Time/Time.csproj" />
       <ProjectReference Include="../../Lib/Units/Units.csproj" />
       <ProjectReference Include="../../Lib/Utils/Utils.csproj" />
     </ItemGroup>

csharp/App/SaliMax/resources/Battery.Service

@@ -3,11 +3,10 @@ Description=Battery48TL_TCP_Bridge
 
 [Service]
 Type=simple
-#ExecStart=socat -v -v TCP-LISTEN:6855,nodelay,fork,reuseaddr GOPEN:/dev/ttyUSB0,raw,b115200
-#ExecStart=socat -x -d -d TCP-LISTEN:6855,fork,max-children=1 GOPEN:/dev/ttyUSB0,rawer,b115200,cs8,parenb=1,parodd=1
 ExecStart=socat -x -d -d TCP-LISTEN:6855 GOPEN:/dev/ttyUSB0,rawer,b115200,cs8,parenb=1,parodd=1
 Restart=always
 RestartSec=500ms
+StartLimitInterval=0
 
 [Install]
 WantedBy=multi-user.target

csharp/App/SaliMax/src/Logfile.cs

@@ -1,4 +1,4 @@
-using InnovEnergy.Lib.Time.Unix;
+using InnovEnergy.Lib.Utils;
 using Microsoft.Extensions.Logging;
 
 namespace InnovEnergy.App.SaliMax;
@@ -37,7 +37,7 @@ public class CustomLogger : ILogger
         File.AppendAllText(_LogFilePath, logMessage + Environment.NewLine);
         _CurrentFileSizeBytes += logMessage.Length;
         
-        Console.WriteLine(logMessage);
+        //Console.WriteLine(logMessage);
     }
 
     private void RotateLogFile()
@@ -56,7 +56,7 @@ public class CustomLogger : ILogger
             File.Delete(logFiles.First());
 
         // Rename the current log file with a timestamp
-        var logFileBackupPath = Path.Combine(logFileDir, $"{logFileBaseName}_{UnixTime.Now}{logFileExt}");
+        var logFileBackupPath = Path.Combine(logFileDir, $"{logFileBaseName}_{DateTime.Now.ToUnixTime()}{logFileExt}");
         File.Move(_LogFilePath, logFileBackupPath);
     }
 }

csharp/App/SaliMax/src/Logger.cs

@@ -6,9 +6,9 @@ public static class Logger
 {
     // Specify the maximum log file size in bytes (e.g., 1 MB)
     
-    private const Int32  MaxFileSizeBytes = 1024 * 1024;       // TODO: move to settings
+    private const Int32  MaxFileSizeBytes = 1024 * 21;       // TODO: move to settings
-    private const Int32  MaxLogFileCount = 1000;               // TODO: move to settings
+    private const Int32  MaxLogFileCount = 5000;               // TODO: move to settings
-    private const String LogFilePath = "LogDirectory/log.txt"; // TODO: move to settings
+    private const String LogFilePath = "LogDirectory/log.csv"; // TODO: move to settings
     
     // ReSharper disable once InconsistentNaming
     private static readonly ILogger _logger = new CustomLogger(LogFilePath, MaxFileSizeBytes, MaxLogFileCount);

csharp/App/SaliMax/src/Program.cs

@@ -16,18 +16,18 @@ using InnovEnergy.Lib.Devices.Trumpf.TruConvertAc.DataTypes;
 using InnovEnergy.Lib.Devices.Trumpf.TruConvertDc;
 using InnovEnergy.Lib.Devices.Trumpf.TruConvertDc.Control;
 using InnovEnergy.Lib.Protocols.Modbus.Channels;
-using InnovEnergy.Lib.Time.Unix;
 using InnovEnergy.Lib.Units;
 using InnovEnergy.Lib.Utils;
 using static InnovEnergy.Lib.Devices.Trumpf.SystemControl.DataTypes.SystemConfig;
 
+
 #pragma warning disable IL2026
 
 namespace InnovEnergy.App.SaliMax;
 
 internal static class Program
 {
-    private static readonly UnixTimeSpan UpdateInterval = UnixTimeSpan.FromSeconds(2);
+    private static readonly TimeSpan UpdateInterval = TimeSpan.FromSeconds(2);
     
     private static readonly IReadOnlyList<Byte> BatteryNodes;
     
@@ -148,9 +148,9 @@ internal static class Program
         while (true)
         {
             await Observable
-                 .Interval(UpdateInterval.ToTimeSpan())
+                 .Interval(UpdateInterval)
                  .Select(_ => RunIteration())
-                 .SelectMany(r => UploadCsv(r, UnixTime.Now.RoundTo(UpdateInterval)))
+                 .SelectMany(r => UploadCsv(r, DateTime.UtcNow))
                  .SelectError()
                  .ToTask();
         }
@@ -172,13 +172,14 @@ internal static class Program
             var record = ReadStatus();
 
             // If control Special Error return true, we must stop the system.(break;)
-            var specialErrorOccured = record.ControlSpecialError();
+            var alarmCondition = record.DetectAlarmStates();
 
-            if (specialErrorOccured.Item1)
+           
+            if (alarmCondition is not null)
             {
                 //stop the system
                 //return
-                specialErrorOccured.Item2.WriteLine();
+                alarmCondition.LogInfo();
             }
             
             record.ControlConstants();
@@ -186,7 +187,7 @@ internal static class Program
 
             $"{record.StateMachine.State}: {record.StateMachine.Message}".LogInfo();
             
-            var essControl = record.ControlEss().LogInfo();
+            var essControl = record.ControlEss().WriteLine().LogInfo();
 
             record.EssControl = essControl;
 
@@ -212,36 +213,13 @@ internal static class Program
         // ReSharper disable once FunctionNeverReturns
     }
 
-    private static (Boolean, String) ControlSpecialError (this StatusRecord r) // to find a better name
+    private static String? DetectAlarmStates(this StatusRecord r) => r.Relays switch
     {
-        //     Those errors must not occurs. Stop the system in case this is happen.
+        { K2ConnectIslandBusToGridBus: false, K2IslandBusIsConnectedToGridBus: true } => " Contradiction: R0 is opening the K2 but the K2 is still close ",
-        var isSpecialErrorOccured = false;
+        { K1GridBusIsConnectedToGrid : false, K2IslandBusIsConnectedToGridBus: true } => " Contradiction: K1 is open but the K2 is still close ",
-        var errorMessage = "No Error";
+        { FiError: true, K2IslandBusIsConnectedToGridBus: true                      } => " Contradiction: Fi error occured but the K2 is still close ",
-        
+        _                                                                             => null
-        //     1. relay0 is open and K2 Close. 
+    };
-        if (r.Relays is { K2ConnectIslandBusToGridBus: false, K2IslandBusIsConnectedToGridBus: true } )
-        {
-            isSpecialErrorOccured = true;
-            errorMessage = " Contradiction: R0 is opening the K2 but the K2 is still close ";
-        }
-        
-        //     2. If K1 is open, K2 must be open . 
-        if (r.Relays is { K1GridBusIsConnectedToGrid: false, K2IslandBusIsConnectedToGridBus: true } )
-        {
-            isSpecialErrorOccured = true;
-            errorMessage = " Contradiction: K1 is open but the K2 is still close ";
-        }
-        
-        //     3.  If FI error is occured, K2 must be open. 
-        if (r.Relays is { FiError: true, K2IslandBusIsConnectedToGridBus: true } )
-        {
-            isSpecialErrorOccured = true;
-            errorMessage = " Contradiction: Fi error occured but the K2 is still close ";
-        }
-        
-        
-        return (isSpecialErrorOccured, errorMessage);
-    }
 
     private static void ControlConstants(this StatusRecord r)
     {
@@ -335,7 +313,7 @@ internal static class Program
         sc.ResetAlarmsAndWarnings  = true; 
     }
 
-    private static async Task<Boolean> UploadCsv(StatusRecord status, UnixTime timeStamp)
+    private static async Task<Boolean> UploadCsv(StatusRecord status, DateTime timeStamp)
     {
         var s3Config = status.Config.S3;
         if (s3Config is null)

csharp/App/SaliMax/src/SystemConfig/AcDcConfig.cs

@@ -2,7 +2,7 @@ namespace InnovEnergy.App.SaliMax.SystemConfig;
 
 public class AcDcConfig
 {
-    public required Double       MaxDcLinkVoltage       { get; set; }
+    public required Double MaxDcLinkVoltage       { get; init; }
-    public required Double       MinDcLinkVoltage       { get; set; }
+    public required Double MinDcLinkVoltage       { get; init; }
-    public required Double       ReferenceDcLinkVoltage { get; set; }  
+    public required Double ReferenceDcLinkVoltage { get; init; }  
 }

csharp/App/SaliMax/src/SystemConfig/Config.cs

@@ -1,5 +1,4 @@
 using System.Text.Json;
-using InnovEnergy.Lib.Time.Unix;
 using InnovEnergy.Lib.Utils;
 using static System.Text.Json.JsonSerializer;
 
@@ -27,7 +26,6 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
     public required Double         MaxBatteryDischargingCurrent   { get; set; }
     public required Double         MaxDcPower                     { get; set; } 
 
-    
     public required Double       MaxChargeBatteryVoltage        { get; set; }
     public required Double       MinDischargeBatteryVoltage     { get; set; }
     
@@ -49,16 +47,16 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
         {
             AcDc = new ()
             {
-                MinDcLinkVoltage             = 690,
+                MinDcLinkVoltage       = 690,
-                ReferenceDcLinkVoltage       = 750,
+                ReferenceDcLinkVoltage = 750,
-                MaxDcLinkVoltage             = 810,
+                MaxDcLinkVoltage       = 810,
             },
         
             DcDc = new ()
             {
-                UpperDcLinkVoltage             = 50,
+                UpperDcLinkVoltage     = 50,
-                LowerDcLinkVoltage             = 50,
+                LowerDcLinkVoltage     = 50,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
             },
         },
         
@@ -66,25 +64,26 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
         {
             AcDc = new ()
             {
-                MinDcLinkVoltage               = 720,
+                MinDcLinkVoltage       = 720,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
-                MaxDcLinkVoltage               = 810,
+                MaxDcLinkVoltage       = 810,
             },
         
             DcDc = new ()
             {
-                UpperDcLinkVoltage             = 50,
+                UpperDcLinkVoltage     = 50,
-                LowerDcLinkVoltage             = 50,
+                LowerDcLinkVoltage     = 50,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
             },
         },
         
-        MaxBatteryChargingCurrent              = 210,
+        MaxBatteryChargingCurrent    = 210,
-        MaxBatteryDischargingCurrent           = 210,
+        MaxBatteryDischargingCurrent = 210,
-        MaxDcPower                             = 10000,
+        MaxDcPower                   = 10000,
+
+        MaxChargeBatteryVoltage    = 57,
+        MinDischargeBatteryVoltage = 0,
         
-        MaxChargeBatteryVoltage                = 57,
-        MinDischargeBatteryVoltage             = 0,
         Devices = new ()
         {
             TruConvertAcIp       = new() { Host = "localhost", Port = 5001},  
@@ -111,16 +110,16 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
         {
             AcDc = new ()
             {
-                MinDcLinkVoltage             = 690,
+                MinDcLinkVoltage       = 690,
-                ReferenceDcLinkVoltage       = 750,
+                ReferenceDcLinkVoltage = 750,
-                MaxDcLinkVoltage             = 810,
+                MaxDcLinkVoltage       = 810,
             },
         
             DcDc = new ()
             {
-                UpperDcLinkVoltage             = 50,
+                UpperDcLinkVoltage     = 50,
-                LowerDcLinkVoltage             = 50,
+                LowerDcLinkVoltage     = 50,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
             },
         },
         
@@ -128,26 +127,26 @@ public class Config //TODO: let IE choose from config files (Json) and connect t
         {
             AcDc = new ()
             {
-                MinDcLinkVoltage               = 720,
+                MinDcLinkVoltage       = 720,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
-                MaxDcLinkVoltage               = 780,
+                MaxDcLinkVoltage       = 780,
             },
         
             DcDc = new ()
             {
-                UpperDcLinkVoltage             = 20,
+                UpperDcLinkVoltage     = 20,
-                LowerDcLinkVoltage             = 20,
+                LowerDcLinkVoltage     = 20,
-                ReferenceDcLinkVoltage         = 750,
+                ReferenceDcLinkVoltage = 750,
             },
         },
 
             
-        MaxBatteryChargingCurrent            = 210,
+        MaxBatteryChargingCurrent    = 210,
-        MaxBatteryDischargingCurrent         = 210,
+        MaxBatteryDischargingCurrent = 210,
-        MaxDcPower                           = 10000,
+        MaxDcPower                   = 10000,
         
-        MaxChargeBatteryVoltage              = 57,
+        MaxChargeBatteryVoltage    = 57,
-        MinDischargeBatteryVoltage           = 0,
+        MinDischargeBatteryVoltage = 0,
         S3 = new()
         {
             Bucket      = "saliomameiringen",

csharp/App/SaliMax/src/SystemConfig/DcDcConfig.cs

@@ -2,7 +2,7 @@ namespace InnovEnergy.App.SaliMax.SystemConfig;
 
 public class DcDcConfig
 {
-    public required Double       LowerDcLinkVoltage       { get; set; }
+    public required Double LowerDcLinkVoltage     { get; init; }
-    public required Double       ReferenceDcLinkVoltage   { get; set; } 
+    public required Double ReferenceDcLinkVoltage { get; init; } 
-    public required Double       UpperDcLinkVoltage       { get; set; }
+    public required Double UpperDcLinkVoltage     { get; init; }
 }

csharp/App/SaliMax/src/SystemConfig/DevicesConfig.cs

@@ -2,6 +2,6 @@ namespace InnovEnergy.App.SaliMax.SystemConfig;
 
 public class DevicesConfig
 {
-    public required AcDcConfig AcDc { get; set; }
+    public required AcDcConfig AcDc { get; init; }
-    public required DcDcConfig DcDc { get; set; }
+    public required DcDcConfig DcDc { get; init; }
 }

csharp/App/SaliMax/src/Topology.cs

@@ -72,7 +72,7 @@ public static class Topology
         var h = g;
         var i = status.PvOnDc?.Dc.Power.Value;
         var k = status.DcDc.Dc.Link.Power.Value;
-        var l = k;
+        var l = status.Battery is not null ? status.Battery.Dc.Power.Value : 0;
         var j = status.LoadOnDc?.Power.Value;
         var d = status.AcGridToAcIsland?.Power.Active;
         var c = status.LoadOnAcGrid?.Power.Active;
@@ -260,9 +260,9 @@ public static class Topology
                          .Apply(TextBlock.AlignLeft)
                          .TitleBox("AC/DC");
 
-        var gridFlow = Flow.Horizontal(h);
+        var dcFlow = Flow.Horizontal(h);
 
-        return TextBlock.AlignCenterVertical(inverterBox, gridFlow);
+        return TextBlock.AlignCenterVertical(inverterBox, dcFlow);
     }
 
 
@@ -285,7 +285,7 @@ public static class Topology
         return Switch.Open("K3");
     }
 
-    private static TextBlock CreateDcDcColumn(this StatusRecord status, ActivePower? l)
+    private static TextBlock CreateDcDcColumn(this StatusRecord status, ActivePower? p)
     {
         var dc48Voltage = status.DcDc.Dc.Battery.Voltage.ToDisplayString();
 
@@ -293,7 +293,7 @@ public static class Topology
                     .AlignLeft(dc48Voltage)
                     .TitleBox("DC/DC");
 
-        var busFlow = Flow.Horizontal(l);
+        var busFlow = Flow.Horizontal(p);
         
         return TextBlock.AlignCenterVertical(busBox, busFlow);
     }
@@ -371,6 +371,7 @@ public static class Topology
         return batteryAvgBox; // TODO: individualBatteries hidden atm 
         
         
+        #pragma warning disable CS0162
         var batteryBoxes = bat
                           .Devices
                           .Select(CreateBatteryBox)
@@ -386,6 +387,8 @@ public static class Topology
                   batteryAvgBox ,
                   individualBatteries 
               );
+        
+        #pragma warning enable CS0162
     }
 
     private static TextBlock CreateAveragedBatteryBox(Battery48TlRecords? bat)
@@ -394,11 +397,12 @@ public static class Topology
             return TextBlock.AlignLeft("no battery").Box();
 
         var voltage        = bat.Dc.Voltage.ToDisplayString();
-        var soc            = bat.Devices.Any() ? bat.Devices.Average(b => b.Soc).Percent().ToDisplayString() : "0";
+        var soc            = bat.Devices.Any() ? bat.Devices.Average(b => b.Soc).Percent().ToDisplayString() : "0"; // TODO
         var current        = bat.Dc.Current.ToDisplayString();
+        var busCurrent     = bat.Devices.Any() ? bat.Devices.Sum(b => b.BusCurrent).A().ToDisplayString() : "0";
         var temp           = bat.Temperature.ToDisplayString();
         var heatingPower   = bat.HeatingPower.ToDisplayString();
-        var alarms         = bat.Alarms.Count + " Alarms";
+        var alarms         = bat.Alarms.Count   + " Alarms";
         var warnings       = bat.Warnings.Count + " Warnings";
         var nBatteries     = bat.Devices.Count;
         
@@ -408,6 +412,7 @@ public static class Topology
                   voltage,
                   soc,
                   current,
+                  busCurrent,
                   temp,
                   heatingPower,
                   warnings,
@@ -447,7 +452,7 @@ public static class Topology
             battery.Soc.ToDisplayString(),
             battery.Dc.Current.ToDisplayString() + " C/D",
             battery.Temperatures.Cells.Average.ToDisplayString(),
-            battery.BusCurrent.ToDisplayString() + " T",
+            battery.BusCurrent.ToDisplayString() ,
             batteryWarnings,
             batteryAlarms,
             battery.HeatingCurrent.ToDisplayString() + " H"

csharp/App/VrmGrabber/Controller.cs

@@ -1,12 +1,8 @@
 using CliWrap;
-using CliWrap.Buffered;
 using HandlebarsDotNet;
 using InnovEnergy.App.VrmGrabber.Database;
-using InnovEnergy.App.VrmGrabber.DataTypes;
 using InnovEnergy.Lib.Utils;
-using InnovEnergy.Lib.Victron.VictronVRM;
 using Microsoft.AspNetCore.Mvc;
-using FILE=System.IO.File;
 using VrmInstallation = InnovEnergy.Lib.Victron.VictronVRM.Installation;
 
 namespace InnovEnergy.App.VrmGrabber;

csharp/App/VrmGrabber/DataTypes/Installation.cs

@@ -1,4 +1,3 @@
-using InnovEnergy.Lib.Victron.VictronVRM;
 using SQLite;
 
 namespace InnovEnergy.App.VrmGrabber.DataTypes;

csharp/App/VrmGrabber/Database/Create.cs

@@ -1,6 +1,5 @@
 using InnovEnergy.App.VrmGrabber.DataTypes;
 
-
 namespace InnovEnergy.App.VrmGrabber.Database;
 
 

csharp/App/VrmGrabber/Database/Db.cs

@@ -7,7 +7,6 @@ using CliWrap.Buffered;
 using InnovEnergy.App.RemoteSupportConsole;
 using InnovEnergy.Lib.Utils;
 using InnovEnergy.Lib.Victron.VictronVRM;
-using Newtonsoft.Json;
 using SQLite;
 using static System.Text.Json.JsonSerializer;
 using static InnovEnergy.App.VrmGrabber.Database.Systemd;

csharp/App/VrmGrabber/Database/Delete.cs

@@ -1,6 +1,5 @@
 using InnovEnergy.App.VrmGrabber.DataTypes;
 
-
 namespace InnovEnergy.App.VrmGrabber.Database;
 
 

csharp/App/VrmGrabber/VrmGrabber.csproj

@@ -1,8 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
+    
+    <Import Project="../InnovEnergy.App.props" />
+
     <PropertyGroup>
         <PublishTrimmed>false</PublishTrimmed>
+        <RootNamespace>InnovEnergy.App.VrmGrabber</RootNamespace>
     </PropertyGroup>
-    <Import Project="../InnovEnergy.App.props" />
     
     <ItemGroup>
         <PackageReference Include="Flurl.Http" Version="3.2.4" />
@@ -30,12 +33,12 @@
   
     <ItemGroup>
       <ProjectReference Include="../../Lib/Utils/Utils.csproj" />
-      <ProjectReference Include="..\..\Lib\Victron\VictronVRM\VictronVRM.csproj" />
+      <ProjectReference Include="../../Lib/Victron/VictronVRM/VictronVRM.csproj" />
-      <ProjectReference Include="..\RemoteSupportConsole\RemoteSupportConsole.csproj" />
+      <ProjectReference Include="../RemoteSupportConsole/RemoteSupportConsole.csproj" />
     </ItemGroup>
     
     <ItemGroup>
-      <_ContentIncludedByDefault Remove="wwwroot\index.html" />
+      <_ContentIncludedByDefault Remove="wwwroot/index.html" />
     </ItemGroup>
     
     <ItemGroup>

csharp/InnovEnergy.sln

@@ -10,8 +10,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SysTools", "Lib/SysTools/Sy
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WebServer", "Lib/WebServer/WebServer.csproj", "{B2627B9F-41DF-44F7-A0D1-CA71FF4A007A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Time", "Lib/Time/Time.csproj", "{442A8366-C177-48FE-84A7-BDF6470A09FF}"
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EmuMeterDriver", "App/EmuMeterDriver/EmuMeterDriver.csproj", "{F65F33B0-3522-4008-8D1E-47EF8E4C7AC7}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BmsTunnel", "App/BmsTunnel/BmsTunnel.csproj", "{40B45363-BE34-420B-8F87-775EE6EE3513}"
@@ -81,6 +79,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "S3Explorer", "App\S3Explore
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VrmGrabber", "App\VrmGrabber\VrmGrabber.csproj", "{88633C71-D701-49B3-A6DE-9D7CED9046E3}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "S3Utils", "Lib\S3Utils\S3Utils.csproj", "{E3914C76-808C-48E0-B5EC-FB24DD999CCC}"
+EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Mailer", "Lib\Mailer\Mailer.csproj", "{73B97F6E-2BDC-40DA-84A7-7FB0264387D6}"
 EndProject
 
@@ -110,10 +110,6 @@ Global
 		{B2627B9F-41DF-44F7-A0D1-CA71FF4A007A}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{B2627B9F-41DF-44F7-A0D1-CA71FF4A007A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{B2627B9F-41DF-44F7-A0D1-CA71FF4A007A}.Release|Any CPU.Build.0 = Release|Any CPU
-		{442A8366-C177-48FE-84A7-BDF6470A09FF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{442A8366-C177-48FE-84A7-BDF6470A09FF}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{442A8366-C177-48FE-84A7-BDF6470A09FF}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{442A8366-C177-48FE-84A7-BDF6470A09FF}.Release|Any CPU.Build.0 = Release|Any CPU
 		{F65F33B0-3522-4008-8D1E-47EF8E4C7AC7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{F65F33B0-3522-4008-8D1E-47EF8E4C7AC7}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F65F33B0-3522-4008-8D1E-47EF8E4C7AC7}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -210,6 +206,10 @@ Global
 		{88633C71-D701-49B3-A6DE-9D7CED9046E3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{88633C71-D701-49B3-A6DE-9D7CED9046E3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{88633C71-D701-49B3-A6DE-9D7CED9046E3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E3914C76-808C-48E0-B5EC-FB24DD999CCC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E3914C76-808C-48E0-B5EC-FB24DD999CCC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E3914C76-808C-48E0-B5EC-FB24DD999CCC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E3914C76-808C-48E0-B5EC-FB24DD999CCC}.Release|Any CPU.Build.0 = Release|Any CPU
 		{73B97F6E-2BDC-40DA-84A7-7FB0264387D6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{73B97F6E-2BDC-40DA-84A7-7FB0264387D6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{73B97F6E-2BDC-40DA-84A7-7FB0264387D6}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -218,7 +218,6 @@ Global
 	GlobalSection(NestedProjects) = preSolution
 		{CF4834CB-91B7-4172-AC13-ECDA8613CD17} = {145597B4-3E30-45E6-9F72-4DD43194539A}
 		{B1268C03-66EB-4486-8BFC-B439225D9D54} = {145597B4-3E30-45E6-9F72-4DD43194539A}
-		{442A8366-C177-48FE-84A7-BDF6470A09FF} = {AD5B98A8-AB7F-4DA2-B66D-5B4E63E7D854}
 		{40B45363-BE34-420B-8F87-775EE6EE3513} = {145597B4-3E30-45E6-9F72-4DD43194539A}
 		{B2627B9F-41DF-44F7-A0D1-CA71FF4A007A} = {AD5B98A8-AB7F-4DA2-B66D-5B4E63E7D854}
 		{F65F33B0-3522-4008-8D1E-47EF8E4C7AC7} = {145597B4-3E30-45E6-9F72-4DD43194539A}
@@ -250,6 +249,7 @@ Global
 		{1391165D-51F1-45B4-8B7F-042A20AA0277} = {4931A385-24DC-4E78-BFF4-356F8D6D5183}
 		{EB56EF94-D8A7-4111-A8E7-A87EF13596DA} = {145597B4-3E30-45E6-9F72-4DD43194539A}
 		{88633C71-D701-49B3-A6DE-9D7CED9046E3} = {145597B4-3E30-45E6-9F72-4DD43194539A}
+		{E3914C76-808C-48E0-B5EC-FB24DD999CCC} = {AD5B98A8-AB7F-4DA2-B66D-5B4E63E7D854}
 		{73B97F6E-2BDC-40DA-84A7-7FB0264387D6} = {AD5B98A8-AB7F-4DA2-B66D-5B4E63E7D854}
 	EndGlobalSection
 EndGlobal

csharp/Lib/Devices/Battery48TL/Battery48TlRecord.Api.cs

@@ -20,7 +20,7 @@ public partial class Battery48TlRecord
     public Boolean Eoc              => Leds is { Green: On, Amber: Off, Blue : Off };
 
     
-    public String SerialNumber => $"{_SerialNum1:D4}{_SerialNum2:D4}{_SerialNum3:D4}{_SerialNum4:D4}".TrimStart('0');
+    public String SerialNumber => $"{_SerialNum1:X4} {_SerialNum2:X4} {_SerialNum3:X4} {_SerialNum4:X4}".TrimStart('0');
 
     public String  FwVersion    => _FwVersion.ToString("X4"); 
     public Strings Warnings     => ParseWarnings().OrderBy(w => w).ToList();

csharp/Lib/Protocols/DBus/Protocol/DataTypes/Convert/TypeToSignature.cs

@@ -71,8 +71,8 @@ public static class TypeToSignature
     private static Signature? ParseTerminalSignature(Type type)
     {
         return Signature
-            .Terminals
+              .Terminals
-            .FirstOrDefault(s => s.Type.IsAssignableFrom(type));
+              .FirstOrDefault(s => s.Type.IsAssignableFrom(type));
     }
 
     private static IReadOnlyList<Type> GetStructElements(Type type)

csharp/Lib/Protocols/DBus/Protocol/DataTypes/Signatures/Specialized/ArraySignature.cs

@@ -16,7 +16,7 @@ public class ArraySignature : ContainerTypeSignature
         var list     = (IList) Activator.CreateInstance(listType)!;
 
         var length = reader.ReadInt32();
-        var end = reader.BytesRead + length;
+        var end    = reader.BytesRead + length;
         while (reader.BytesRead < end)
         {
             //reader.AlignForComposite();  // NOT ALIGNED!

csharp/Lib/Protocols/DBus/Protocol/DataTypes/Signatures/Specialized/BasicTypeSignature.cs

@@ -2,7 +2,4 @@ namespace InnovEnergy.Lib.Protocols.DBus.Protocol.DataTypes.Signatures.Specializ
 
 public abstract class BasicTypeSignature : Signature
 {
-
-
-
 }

csharp/Lib/Protocols/DBus/Protocol/Message.cs

@@ -176,11 +176,11 @@ public readonly struct Message
 
         var raw = reader.ReadSegment((Int32)payloadLength);
 
-        var br = new DBusBufferReader(raw, reader.SwapEndian);
-
         if (signature.IsEmpty)
             return (raw.ToArray(), true);   // no signature, but data available. should probably not happen.
 
+        var br = new DBusBufferReader(raw, reader.SwapEndian);
+
         // try
         // {
             return (signature.Read(br), false);

csharp/Lib/Protocols/DBus/Protocol/Replies.cs

@@ -5,7 +5,7 @@ using InnovEnergy.Lib.Protocols.DBus.Protocol.Header;
 
 namespace InnovEnergy.Lib.Protocols.DBus.Protocol;
 
-using HeaderType      = ValueTuple<Byte, Byte, Byte, Byte, UInt32, UInt32, IReadOnlyList<(Byte, Variant)>>;
+using HeaderType = ValueTuple<Byte, Byte, Byte, Byte, UInt32, UInt32, IReadOnlyList<(Byte, Variant)>>;
 
 public static class Replies
 {
@@ -53,11 +53,11 @@ public static class Replies
 
         HeaderType header =
         (
-            (Byte)Env.Endianness,
+            (Byte) Env.Endianness,
-            (Byte)MessageType.MethodReturn,
+            (Byte) MessageType.MethodReturn,
-            (Byte)HeaderFlags.NoReplyExpected,
+            (Byte) HeaderFlags.NoReplyExpected,
             Message.ProtocolVersion,
-            (UInt32)signature.MeasureSize(payload),
+            (UInt32) signature.MeasureSize(payload),
             SerialSource.Next(),
             fields
         );

csharp/Lib/S3Utils/Data/S3Bucket.cs

@@ -0,0 +1,6 @@
+namespace InnovEnergy.Lib.S3Utils.Data;
+
+public record S3Bucket : S3RegionCredentials
+{
+    public required String Bucket { get; init; }
+}

csharp/Lib/S3Utils/Data/S3Credentials.cs

@@ -0,0 +1,47 @@
+using static System.Environment;
+
+namespace InnovEnergy.Lib.S3Utils.Data;
+
+public record S3Credentials
+{
+    protected static readonly String S3CfgFile = GetFolderPath(SpecialFolder.UserProfile).TrimEnd('\\', '/') + "/.s3cfg";
+    
+    public required String Key    { get; init; }
+    public required String Secret { get; init; }
+
+    public static S3Credentials? FromS3Cfg() => FromFile(S3CfgFile);
+    
+    public static S3Credentials? FromFile(String file)
+    {
+        // [default]
+        // host_base = sos-ch-dk-2.exo.io
+        // host_bucket = %(bucket)s.sos-ch-dk-2.exo.io
+        // access_key = xxxxxxxxxxxxxxx
+        // secret_key = xxxxxxxxxxxxxxx
+        // use_https = True
+        
+        try
+        {
+            var cfg = ParseFile(file);
+
+            return new S3Credentials
+            {
+                Key    = cfg["access_key"],
+                Secret = cfg["secret_key"]
+            };
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
+    protected static Dictionary<String, String> ParseFile(String cfgFile)
+    {
+        return File
+              .ReadAllLines(cfgFile)
+              .Where(l => l.Contains("="))
+              .Select(l => l.Split("="))
+              .ToDictionary(l => l[0].Trim(), l => l[1].Trim());
+    }
+}

csharp/Lib/S3Utils/Data/S3Path.cs

@@ -0,0 +1,6 @@
+namespace InnovEnergy.Lib.S3Utils.Data;
+
+public record S3Path : S3Bucket
+{
+    public required String Path { get; init; }
+}

csharp/Lib/S3Utils/Data/S3RegionCredentials.cs

@@ -0,0 +1,49 @@
+using Amazon.Runtime;
+using Amazon.S3;
+using InnovEnergy.Lib.Utils;
+
+namespace InnovEnergy.Lib.S3Utils.Data;
+
+public record S3RegionCredentials : S3Credentials
+{
+    public required String Region { get; init; }
+
+    private AmazonS3Client? _Client;
+    internal AmazonS3Client Client => _Client ??= new AmazonS3Client
+    (
+        credentials: new BasicAWSCredentials(Key, Secret),
+        clientConfig: new()
+        {
+            ServiceURL = Region.EnsureStartsWith("https://"),
+            ForcePathStyle = true,
+        }
+    );
+
+    public new static S3RegionCredentials? FromS3Cfg() => FromFile(S3CfgFile);
+
+    public new static S3RegionCredentials? FromFile(String file)
+    {
+        // [default]
+        // host_base = sos-ch-dk-2.exo.io
+        // host_bucket = %(bucket)s.sos-ch-dk-2.exo.io
+        // access_key = xxxxxxxxxxxxxxx
+        // secret_key = xxxxxxxxxxxxxxx
+        // use_https = True
+        
+        try
+        {
+            var cfg = ParseFile(file);
+
+            return new S3RegionCredentials
+            {
+                Key    = cfg["access_key"],
+                Secret = cfg["secret_key"],
+                Region = cfg["host_base"],
+            };
+        }
+        catch
+        {
+            return null;
+        }
+    }
+}

csharp/Lib/S3Utils/ExoScale/DefaultCredentials.cs

@@ -0,0 +1,21 @@
+
+using InnovEnergy.Lib.S3Utils.Data;
+
+namespace InnovEnergy.Lib.S3Utils.ExoScale;
+
+public static class DefaultCredentials
+{
+    public static S3Credentials ReadOnly => new S3Credentials
+    {
+        Key    = "EXOb6d6dc1880cdd51f1ebc6692",
+        Secret = "kpIey4QJlQFuWG_WoTazcY7kBEjN2f_ll2cDBeg64m4",
+    };
+    
+
+    public static S3Credentials ReadWrite => new S3Credentials
+    {
+        Key    = "EXO87ca85e29dd412f1238f1cf0",
+        Secret = "-T9TAqy9a3-0-xj7HKsFFJOCcxfRpcnL6OW5oOrOcWU",
+    };
+    
+}

csharp/Lib/S3Utils/ExoScale/Regions.cs

@@ -0,0 +1,6 @@
+namespace InnovEnergy.Lib.S3Utils.ExoScale;
+
+public static class Regions
+{
+    public static String Default => "sos-ch-dk-2.exo.io";
+}

csharp/Lib/S3Utils/Resources/CORS

@@ -0,0 +1,9 @@
+<?xml version="1.0" ?>
+<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
+  <CORSRule>
+    <AllowedOrigin>*</AllowedOrigin>
+    <AllowedMethod>GET</AllowedMethod>
+    <AllowedMethod>HEAD</AllowedMethod>
+    <AllowedHeader>*</AllowedHeader>
+  </CORSRule>
+</CORSConfiguration>

csharp/Lib/S3Utils/Resources/s3AdminKey.json

@@ -0,0 +1,4 @@
+{
+  "Key": "EXO1abcb772bf43ab72951ba1dc",
+  "Secret": "_ym1KsGBSp90S5dwhZn18XD-u9Y4ghHvyIxg5gv5fHw" 
+}

csharp/Lib/S3Utils/Resources/s3ReadOnlyKey.json

@@ -0,0 +1,5 @@
+{  
+   "Key": "EXOb6d6dc1880cdd51f1ebc6692",     
+   "Secret": "kpIey4QJlQFuWG_WoTazcY7kBEjN2f_ll2cDBeg64m4",
+   "Region": "sos-ch-dk-2.exo.io"
+}

csharp/Lib/S3Utils/Resources/s3ReadWriteKey.json

@@ -0,0 +1,5 @@
+{
+  "Key": "EXO87ca85e29dd412f1238f1cf0",
+  "Secret": "-T9TAqy9a3-0-xj7HKsFFJOCcxfRpcnL6OW5oOrOcWU",
+  "Region": "sos-ch-dk-2.exo.io"
+}

csharp/Lib/S3Utils/Resources/smtpConfig.json

@@ -0,0 +1,6 @@
+{
+  "Url": "mail.agenturserver.de",
+  "Port": 587,
+  "Username": "p518526p69",
+  "Password": "i;b*xqm4iB5uhl"
+}

csharp/Lib/S3Utils/Resources/urlAndKey.json

@@ -0,0 +1,6 @@
+{
+  "ReadOnlyS3Key": "EXO44d2979c8e570eae81ead564",
+  "ReadOnlyS3Secret": "55MAqyO_FqUmh7O64VIO0egq50ERn_WIAWuc2QC44QU" ,
+  "ReadWriteS3Key": "EXO87ca85e29dd412f1238f1cf0", 
+  "ReadWriteS3Secret": "-T9TAqy9a3-0-xj7HKsFFJOCcxfRpcnL6OW5oOrOcWU" 
+}

csharp/Lib/S3Utils/S3.cs

@@ -0,0 +1,90 @@
+using Amazon.S3.Model;
+using InnovEnergy.Lib.S3Utils.Data;
+using InnovEnergy.Lib.Utils;
+using S3Bucket = InnovEnergy.Lib.S3Utils.Data.S3Bucket;
+
+namespace InnovEnergy.Lib.S3Utils;
+
+public static class S3
+{
+    public static S3RegionCredentials Region(this S3Credentials credentials, String region) => new()
+    {
+        Secret = credentials.Secret,
+        Key    = credentials.Key,
+        Region = region,
+    };
+    
+    public static S3Bucket Bucket(this S3RegionCredentials region, String bucket) => new()
+    {
+        Region = region.Region,
+        Secret = region.Secret,
+        Key    = region.Key,
+        Bucket = bucket,
+    };
+    
+    public static S3Path Path(this S3Bucket bucket, String path) => new()
+    {
+        Bucket = bucket.Bucket,
+        Region = bucket.Region,
+        Secret = bucket.Secret,
+        Key    = bucket.Key,
+        Path   = path
+    };
+
+    public static IAsyncEnumerable<S3Path> ListObjects(this S3Bucket bucketOrPrefixPath)
+    {
+        var path = bucketOrPrefixPath as S3Path ?? bucketOrPrefixPath.Path(null!);
+
+        var request = new ListObjectsV2Request
+        {
+            BucketName = path.Bucket,
+            Prefix     = path.Path
+        };
+
+        return bucketOrPrefixPath
+              .Client
+              .Paginators
+              .ListObjectsV2(request)
+              .Responses
+              .SelectMany(r => r.S3Objects)
+              .Select(o => path with { Path = o.Key });
+    }
+    
+    public static async Task<String> GetObject(this S3Path path)
+    {
+        var request = new GetObjectRequest
+        {
+            BucketName = path.Bucket,
+            Key        = path.Path
+        };
+
+        using var response = await path.Client.GetObjectAsync(request);
+        await using var responseStream = response.ResponseStream;
+        using var reader = new StreamReader(responseStream);
+
+        return await reader.ReadToEndAsync();
+    }
+    
+    public static async IAsyncEnumerable<String> GetObjectLineByLine(this S3Path path)
+    {
+        var request = new GetObjectRequest
+        {
+            BucketName = path.Bucket,
+            Key        = path.Path
+        };
+
+        using var response = await path.Client.GetObjectAsync(request);
+        await using var responseStream = response.ResponseStream;
+        using var reader = new StreamReader(responseStream);
+
+        while (true)
+        {
+            var line = await reader.ReadLineAsync();
+            
+            if (line is not null)
+                yield return line;
+            else
+                yield break;
+        }
+    }
+}

csharp/Lib/S3Utils/S3Utils.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <Import Project="../InnovEnergy.Lib.props" />
+
+    <PropertyGroup>
+        <RootNamespace>InnovEnergy.Lib.S3Utils</RootNamespace>
+    </PropertyGroup>
+    
+    <ItemGroup>
+        <ProjectReference Include="../Utils/Utils.csproj" />
+    </ItemGroup>
+    
+    <ItemGroup>
+      <PackageReference Include="AWSSDK.S3" Version="3.7.203.12" />
+      <PackageReference Include="System.Linq.Async" Version="6.0.1" />
+    </ItemGroup>
+    
+</Project>

csharp/Lib/Time/Time.csproj

@@ -9,4 +9,8 @@
         <RootNamespace>InnovEnergy.Lib.Time</RootNamespace>
     </PropertyGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\Utils\Utils.csproj" />
+    </ItemGroup>
+    
 </Project>

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

@@ -1,7 +1,7 @@
-namespace InnovEnergy.Lib.Time.Unix;
+// namespace InnovEnergy.Lib.Time.Unix;
-
+//
-public readonly partial struct UnixTime : IComparable<UnixTime>, IEquatable<UnixTime>
+// public readonly partial struct UnixTime : IComparable<UnixTime>, IEquatable<UnixTime>
-{
+// {
-    Int32 IComparable<UnixTime>.CompareTo(UnixTime other) => Ticks.CompareTo(other.Ticks);
+//     Int32 IComparable<UnixTime>.CompareTo(UnixTime other) => Ticks.CompareTo(other.Ticks);
-    Boolean IEquatable<UnixTime>.Equals(UnixTime other) => Ticks == other.Ticks;
+//     Boolean IEquatable<UnixTime>.Equals(UnixTime other) => Ticks == other.Ticks;
-}
+// }

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

@@ -1,20 +1,19 @@
-namespace InnovEnergy.Lib.Time.Unix;
+// namespace InnovEnergy.Lib.Time.Unix;
-
+//
-public readonly partial struct UnixTime
+// public readonly partial struct UnixTime
-{
+// {
-    private UnixTime(UInt32 ticks) => Ticks = ticks;
+//     public static UnixTime FromTicks(Int32 ticks) => new UnixTime { Ticks = ticks };
-
+//
-    public static UnixTime FromTicks(UInt32 ticks) => new UnixTime(ticks);
+//     public static UnixTime FromUtcDateTime(DateTime dateTime)
-    public static UnixTime FromTicks(Int32  ticks) => new UnixTime((UInt32) ticks);
+//     {
-
+//         var timeSinceEpoch = dateTime - DateTime.UnixEpoch;
-    public static UnixTime FromUtcDateTime(DateTime dateTime)
+//         var ticks = (Int32) timeSinceEpoch.TotalSeconds;
-    {
+//
-        var timeSinceEpoch = dateTime - DateTime.UnixEpoch;
+//         return new UnixTime{ Ticks = ticks};
-        var ticks = (UInt32) timeSinceEpoch.TotalSeconds;
+//     }
-
+//
-        return new UnixTime(ticks);
+//     public static UnixTime Epoch => new UnixTime { Ticks = 0 };
-    }
+//     public static UnixTime Now => FromUtcDateTime(DateTime.UtcNow);
-
+//     
-    public static UnixTime Epoch => new UnixTime(0);
+//     
-    public static UnixTime Now => FromUtcDateTime(DateTime.UtcNow);
+// }
-}

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

@@ -1,9 +1,9 @@
-namespace InnovEnergy.Lib.Time.Unix;
+// namespace InnovEnergy.Lib.Time.Unix;
-
+//
-public readonly partial struct UnixTime
+// public readonly partial struct UnixTime
-{
+// {
-    public DateTime ToUtcDateTime() => DateTime.UnixEpoch + TimeSpan.FromSeconds(Ticks);
+//     public DateTime ToUtcDateTime() => DateTime.UnixEpoch + TimeSpan.FromSeconds(Ticks);
-    
+//     
-    public static implicit operator DateTime(UnixTime unixTimeSpan) => unixTimeSpan.ToUtcDateTime();
+//     public static implicit operator DateTime(UnixTime unixTimeSpan) => unixTimeSpan.ToUtcDateTime();
-    public static implicit operator UnixTime(DateTime dateTime)     => FromUtcDateTime(dateTime);
+//     public static implicit operator UnixTime(DateTime dateTime)     => FromUtcDateTime(dateTime);
-}
+// }

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

@@ -1,20 +1,27 @@
-namespace InnovEnergy.Lib.Time.Unix;
+// using InnovEnergy.Lib.Utils;
-
+//
-public readonly partial struct UnixTime
+// namespace InnovEnergy.Lib.Time.Unix;
-{
+//
-    public static UnixTime operator -(UnixTime a, UnixTimeSpan b) => FromTicks(a.Ticks - b.Ticks);
+// public readonly partial struct UnixTime
-    public static UnixTime operator +(UnixTime a, UnixTimeSpan b) => FromTicks(a.Ticks + b.Ticks);
+// {
-    public static UnixTime operator +(UnixTimeSpan a, UnixTime b) => FromTicks(a.Ticks + b.Ticks);
+//     public static UnixTime operator -(UnixTime a, TimeSpan b) => FromTicks(a.Ticks - GetUnixTicks(b));
-
+//     public static UnixTime operator +(UnixTime a, TimeSpan b) => FromTicks(a.Ticks + GetUnixTicks(b));
-    public static UInt32 operator /(UnixTime a, UnixTimeSpan b) => a.Ticks / b.Ticks;
+//     public static UnixTime operator +(TimeSpan a, UnixTime b) => FromTicks(GetUnixTicks(a) + b.Ticks);
-    public static UInt32 operator %(UnixTime a, UnixTimeSpan b) => a.Ticks % b.Ticks;
+//
-
+//     public static Double operator /(UnixTime a, TimeSpan b) => a.Ticks.ConvertTo<Double>() / b.Ticks;
-    public static Boolean operator <  (UnixTime l, UnixTime r) => l.Ticks <  r.Ticks;
+//     public static Int32  operator %(UnixTime a, TimeSpan b) => a.Ticks % GetUnixTicks(b);
-    public static Boolean operator >  (UnixTime l, UnixTime r) => l.Ticks >  r.Ticks;
+//
-    public static Boolean operator <= (UnixTime l, UnixTime r) => l.Ticks <= r.Ticks;
+//     public static Boolean operator <  (UnixTime l, UnixTime r) => l.Ticks <  r.Ticks;
-    public static Boolean operator >= (UnixTime l, UnixTime r) => l.Ticks >= r.Ticks;
+//     public static Boolean operator >  (UnixTime l, UnixTime r) => l.Ticks >  r.Ticks;
-    public static Boolean operator == (UnixTime l, UnixTime r) => l.Ticks == r.Ticks;
+//     public static Boolean operator <= (UnixTime l, UnixTime r) => l.Ticks <= r.Ticks;
-    public static Boolean operator != (UnixTime l, UnixTime r) => l.Ticks != r.Ticks;
+//     public static Boolean operator >= (UnixTime l, UnixTime r) => l.Ticks >= r.Ticks;
-
+//     public static Boolean operator == (UnixTime l, UnixTime r) => l.Ticks == r.Ticks;
-    public static UnixTimeSpan operator -(UnixTime a, UnixTime b) => UnixTimeSpan.FromTicks(a.Ticks - b.Ticks);
+//     public static Boolean operator != (UnixTime l, UnixTime r) => l.Ticks != r.Ticks;
-}
+//
+//     public static TimeSpan operator -(UnixTime a, UnixTime b) => TimeSpan.FromSeconds(a.Ticks - b.Ticks);
+//
+//     private static Int32 GetUnixTicks(TimeSpan ts)
+//     {
+//         return (Int32) (ts.Ticks / 10000000L);
+//     }
+// }

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

@@ -1,8 +1,8 @@
-namespace InnovEnergy.Lib.Time.Unix;
+// namespace InnovEnergy.Lib.Time.Unix;
-
+//
-public readonly partial struct UnixTime
+// public readonly partial struct UnixTime
-{
+// {
-    public override Boolean Equals(Object? obj) => obj is UnixTime other && Ticks == other.Ticks;
+//     public override Boolean Equals(Object? obj) => obj is UnixTime other && Ticks == other.Ticks;
-    public override Int32   GetHashCode() => (Int32) (Ticks & 0x7F_FF_FF_FF);
+//     public override Int32   GetHashCode() => (Int32) (Ticks & 0x7F_FF_FF_FF);
-    public override String  ToString() => Ticks.ToString();
+//     public override String  ToString() => Ticks.ToString();
-}
+// }

csharp/Lib/Time/Unix/UnixTime.cs

@@ -1,14 +1,6 @@
-
+// namespace InnovEnergy.Lib.Time.Unix;
-
+//
-// ReSharper disable ArrangeStaticMemberQualifier
+// public readonly partial struct UnixTime
-
+// {
-namespace InnovEnergy.Lib.Time.Unix;
+//     public required Int32 Ticks { get; init; }
-
+// }
-public readonly partial struct UnixTime
-{
-    // IMPORTANT: init is necessary for JSON deserializer
-    // ReSharper disable once AutoPropertyCanBeMadeGetOnly.Global
-    public UInt32 Ticks { get; init; }
-
-    public UnixTime RoundTo(UnixTimeSpan span) => Epoch + this / span * span;
-}

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

@@ -1,7 +0,0 @@
-namespace InnovEnergy.Lib.Time.Unix;
-
-public readonly partial struct UnixTimeSpan : IComparable<UnixTimeSpan>, IEquatable<UnixTimeSpan>
-{
-    Int32 IComparable<UnixTimeSpan>.CompareTo(UnixTimeSpan other) => Ticks.CompareTo(other.Ticks);
-    Boolean IEquatable<UnixTimeSpan>.Equals(UnixTimeSpan other) => Ticks == other.Ticks;
-}

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

@@ -1,26 +0,0 @@
-namespace InnovEnergy.Lib.Time.Unix;
-
-public readonly partial struct UnixTimeSpan
-{
-    private UnixTimeSpan(UInt32 ticks) => Ticks = ticks;
-
-    public static UnixTimeSpan FromTicks(UInt32 ticks) => new UnixTimeSpan(ticks);
-
-    public static UnixTimeSpan FromTimeSpan(TimeSpan timeSpan)
-    {
-        var ticks = (UInt32) timeSpan.TotalSeconds;
-        return FromTicks(ticks);
-    }
-
-    public static UnixTimeSpan FromSeconds(UInt32 s) => FromTicks  (s);
-    public static UnixTimeSpan FromMinutes(UInt32 m) => FromSeconds(m * 60);
-    public static UnixTimeSpan FromHours  (UInt32 h) => FromMinutes(h * 60);
-    public static UnixTimeSpan FromDays   (UInt32 d) => FromHours  (d * 24);
-    public static UnixTimeSpan FromWeeks  (UInt32 w) => FromDays   (w * 7);
-
-    public static UnixTimeSpan FromSeconds(Int32 s) => FromSeconds((UInt32) s);
-    public static UnixTimeSpan FromMinutes(Int32 m) => FromMinutes((UInt32) m);
-    public static UnixTimeSpan FromHours  (Int32 h) => FromHours  ((UInt32) h);
-    public static UnixTimeSpan FromDays   (Int32 d) => FromDays   ((UInt32) d);
-    public static UnixTimeSpan FromWeeks  (Int32 w) => FromWeeks  ((UInt32) w);
-}

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

@@ -1,9 +0,0 @@
-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.Operators.cs

@@ -1,29 +0,0 @@
-namespace InnovEnergy.Lib.Time.Unix;
-
-public readonly partial struct UnixTimeSpan
-{
-    public static Boolean operator <  (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks <  r.Ticks;
-    public static Boolean operator >  (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks >  r.Ticks;
-    public static Boolean operator <= (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks <= r.Ticks;
-    public static Boolean operator >= (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks >= r.Ticks;
-    public static Boolean operator == (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks == r.Ticks;
-    public static Boolean operator != (UnixTimeSpan l, UnixTimeSpan r) => l.Ticks != r.Ticks;
-
-    public static UnixTimeSpan operator +(UnixTimeSpan a, UnixTimeSpan b) => new UnixTimeSpan(a.Ticks + b.Ticks);
-    public static UnixTimeSpan operator -(UnixTimeSpan a, UnixTimeSpan b) => new UnixTimeSpan(a.Ticks - b.Ticks);
-
-    public static UnixTimeSpan operator *(UnixTimeSpan a, UInt32 b) => new UnixTimeSpan(a.Ticks * b);
-    public static UnixTimeSpan operator *(UnixTimeSpan a, Int32 b)  => new UnixTimeSpan(a.Ticks * (UInt32) b);
-
-    public static UnixTimeSpan operator *(UInt32 a, UnixTimeSpan b) => new UnixTimeSpan(a * b.Ticks);
-    public static UnixTimeSpan operator *(Int32 a, UnixTimeSpan b)  => new UnixTimeSpan((UInt32) a * b.Ticks);
-
-    public static UnixTimeSpan operator /(UnixTimeSpan a, UInt32 b) => new UnixTimeSpan(a.Ticks / b);
-    public static UnixTimeSpan operator /(UnixTimeSpan a, Int32 b)  => new UnixTimeSpan(a.Ticks / (UInt32)b);
-    public static UInt32       operator /(UnixTimeSpan a, UnixTimeSpan b) => a.Ticks / b.Ticks;
-
-    public static UnixTimeSpan operator %(UnixTimeSpan a, UInt32 b) => new UnixTimeSpan(a.Ticks % b);
-    public static UnixTimeSpan operator %(UnixTimeSpan a, Int32 b)  => new UnixTimeSpan(a.Ticks % (UInt32)b);
-    public static UInt32       operator %(UnixTimeSpan a, UnixTimeSpan b) => a.Ticks % b.Ticks;
-
-}

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

@@ -1,50 +0,0 @@
-using System.Text;
-
-namespace InnovEnergy.Lib.Time.Unix;
-
-public readonly partial struct UnixTimeSpan
-{
-    public override String ToString()
-    {
-        var sb = new StringBuilder();
-        var dt = ToTimeSpan();
-
-        var weeks = dt.Days / 7;
-        var days  = dt.Days % 7;
-
-        if (weeks > 0)
-        {
-            sb.Append(weeks);
-            sb.Append("w ");
-        }
-        if (days > 0)
-        {
-            sb.Append(days);
-            sb.Append("d ");
-        }
-        if (dt.Hours > 0)
-        {
-            sb.Append(dt.Hours);
-            sb.Append("h ");
-        }
-        if (dt.Minutes > 0)
-        {
-            sb.Append(dt.Minutes);
-            sb.Append("m ");
-        }
-        if (dt.Seconds > 0)
-        {
-            sb.Append(dt.Seconds);
-            sb.Append("s");
-        }
-
-        return sb.ToString().Trim();
-    }
-
-    public override Boolean Equals(Object? obj) => obj is UnixTime other && Ticks == other.Ticks;
-
-    public override Int32 GetHashCode() => (Int32) (Ticks & 0x7F_FF_FF_FF);
-
-    public static UnixTimeSpan Forever { get; } = FromTicks(UInt32.MaxValue) / 1.Weeks() * 1.Weeks();
-
-}

csharp/Lib/Time/Unix/UnixTimeSpan.cs

@@ -1,8 +0,0 @@
-namespace InnovEnergy.Lib.Time.Unix;
-
-public readonly partial struct UnixTimeSpan
-{
-    public UInt32 Ticks { get; }
-
-    
-}

csharp/Lib/Time/Unix/UnixTimeSpanExtensions.cs

@@ -1,16 +0,0 @@
-namespace InnovEnergy.Lib.Time.Unix;
-
-public static class UnixTimeSpanExtensions
-{
-    public static UnixTimeSpan Seconds(this Int32 s) => UnixTimeSpan.FromSeconds(s);
-    public static UnixTimeSpan Minutes(this Int32 m) => UnixTimeSpan.FromMinutes(m);
-    public static UnixTimeSpan Hours  (this Int32 h) => UnixTimeSpan.FromHours  (h);
-    public static UnixTimeSpan Days   (this Int32 d) => UnixTimeSpan.FromDays   (d);
-    public static UnixTimeSpan Weeks  (this Int32 w) => UnixTimeSpan.FromWeeks  (w);
-
-    public static UnixTimeSpan Seconds(this UInt32 s) => UnixTimeSpan.FromSeconds(s);
-    public static UnixTimeSpan Minutes(this UInt32 m) => UnixTimeSpan.FromMinutes(m);
-    public static UnixTimeSpan Hours  (this UInt32 h) => UnixTimeSpan.FromHours  (h);
-    public static UnixTimeSpan Days   (this UInt32 d) => UnixTimeSpan.FromDays   (d);
-    public static UnixTimeSpan Weeks  (this UInt32 w) => UnixTimeSpan.FromWeeks  (w);
-}

csharp/Lib/Units/Units.csproj

@@ -8,7 +8,6 @@
     
     <ItemGroup>
         <ProjectReference Include="../Utils/Utils.csproj" />
-        <ProjectReference Include="../Time/Time.csproj" />
     </ItemGroup>
     
 <!--    <Target Name="PreBuild" BeforeTargets="PreBuildEvent">-->

csharp/Lib/Utils/AsyncEnumerableEx.cs

@@ -5,6 +5,12 @@ namespace InnovEnergy.Lib.Utils;
 public static class AsyncEnumerableEx
 {
 
+    public static IAsyncEnumerable<R> SelectMany<T, R>(this IAsyncEnumerable<T> ts, Func<T, IEnumerable<R>> map)
+    {
+        return ts.SelectMany<T, R>(t => map(t).ToAsyncEnumerable());
+    }
+
+
     public static async IAsyncEnumerable<T> Throttle<T>(this IAsyncEnumerable<T> ts,
         TimeSpan dueTime,
         [EnumeratorCancellation] CancellationToken cancel = default)

csharp/Lib/Utils/DateTimeUtils.cs

@@ -0,0 +1,38 @@
+namespace InnovEnergy.Lib.Utils;
+
+public static class DateTimeUtils
+{
+    public static DateTime Epoch { get; } = new DateTime
+    (
+        year: 1970,
+        month: 1,
+        day: 1,
+        hour: 0,
+        minute: 0,
+        second: 0,
+        DateTimeKind.Utc
+    );
+    
+    public static Int64 ToUnixTime(this DateTime dateTime)
+    {
+        var timeSinceEpoch = dateTime.ToUniversalTime() - Epoch;
+        return timeSinceEpoch.Ticks / TimeSpan.TicksPerSecond;
+    }
+
+    public static DateTime DateTimeFromUnixTime(this IConvertible unixTime)
+    {
+        var epochTicks = Epoch.Ticks + unixTime.ConvertTo<Double>() * TimeSpan.TicksPerSecond;
+        
+        return new DateTime(epochTicks.ConvertTo<Int64>(), DateTimeKind.Utc);
+    }
+
+    public static DateTime Round(this DateTime date, TimeSpan interval)
+    {
+        var i = interval.Ticks;
+        var t = date.Ticks;
+        
+        var intervalTicks = (t + i / 2 + 1) / i * i;
+        
+        return new DateTime(intervalTicks, date.Kind);
+    }
+}

csharp/Lib/Utils/GraphTraversal.cs

@@ -6,7 +6,7 @@ public static class GraphTraversal
 {
     public static IEnumerable<T> TraverseDepthFirstPreOrder<T>(T root,
                                          Func<T, IEnumerable<T>> getChildren,
-IEqualityComparer<T>? comparer = null)
+                                           IEqualityComparer<T>? comparer = null)
     {
         return Traverse(root, TreeTraversal.TraverseDepthFirstPreOrder, getChildren, comparer);
     }
@@ -14,7 +14,7 @@ IEqualityComparer<T>? comparer = null)
 
     public static IEnumerable<T> TraverseDepthFirstPostOrder<T>(T root,
                                           Func<T, IEnumerable<T>> getChildren,
-IEqualityComparer<T>? comparer = null)
+                                            IEqualityComparer<T>? comparer = null)
     {
         return Traverse(root, TreeTraversal.TraverseDepthFirstPostOrder, getChildren, comparer);
     }
@@ -28,7 +28,7 @@ IEqualityComparer<T>? comparer = null)
 
     public static IEnumerable<T> TraverseDepthFirstPreOrder<T>(IEnumerable<T> sources,
                                                       Func<T, IEnumerable<T>> getChildren,
-IEqualityComparer<T>? comparer = null)
+                                                        IEqualityComparer<T>? comparer = null)
     {
         return Traverse(sources, TreeTraversal.TraverseDepthFirstPreOrder, getChildren, comparer);
     }
@@ -36,14 +36,14 @@ IEqualityComparer<T>? comparer = null)
 
     public static IEnumerable<T> TraverseDepthFirstPostOrder<T>(IEnumerable<T> sources,
                                                        Func<T, IEnumerable<T>> getChildren,
-IEqualityComparer<T>? comparer = null)
+                                                         IEqualityComparer<T>? comparer = null)
     {
         return Traverse(sources, TreeTraversal.TraverseDepthFirstPostOrder, getChildren, comparer);
     }
 
     public static IEnumerable<T> TraverseBreadthFirst<T>(IEnumerable<T> sources,
                                                 Func<T, IEnumerable<T>> getChildren,
-IEqualityComparer<T>? comparer = null)
+                                                  IEqualityComparer<T>? comparer = null)
     {
         return Traverse(sources, TreeTraversal.TraverseBreadthFirst, getChildren, comparer);
     }
@@ -52,7 +52,7 @@ IEqualityComparer<T>? comparer = null)
     private static IEnumerable<T> Traverse<T>(T root, 
                                               Func<T , Func<T, IEnumerable<T>>,IEnumerable<T>> traversor,
                                               Func<T, IEnumerable<T>> getChildren, 
-IEqualityComparer<T>? comparer = null)
+                                              IEqualityComparer<T>? comparer = null)
     {
         var getUniqueChildren = GetUniqueChildren(getChildren, root, comparer);
         return traversor(root, getUniqueChildren);
@@ -98,15 +98,15 @@ IEqualityComparer<T>? comparer = null)
     }
 
     private static Func<T, IEnumerable<T>> GetUniqueChildren<T>(Func<T, IEnumerable<T>> getChildren, 
-T root,
+                                                                                      T root, 
-IEqualityComparer<T>? comparer)
+                                                                  IEqualityComparer<T>? comparer)
     {
         return GetUniqueChildren(getChildren, root.AsSingleEnumerable(), comparer);
     }
 
     private static Func<T, IEnumerable<T>> GetUniqueChildren<T>(Func<T, IEnumerable<T>> getChildren, 
-IEnumerable<T> sources,
+                                                                         IEnumerable<T> sources, 
-IEqualityComparer<T>? comparer)
+                                                                  IEqualityComparer<T>? comparer)
     {
         var set = new HashSet<T>(sources, comparer ?? EqualityComparer<T>.Default);
         return n => getChildren(n).Where(set.Add);

csharp/Lib/Utils/NullableUtils.cs

@@ -2,20 +2,7 @@ namespace InnovEnergy.Lib.Utils;
 
 public static class NullableUtils
 {
-    public static T? Nullable<T>(this T t) where T : struct => t;
+    // ReSharper disable once ReturnTypeCanBeNotNullable
+    public static T? AsNullable<T>(this T t) => t;
 
-    public static IEnumerable<T> Enumerable<T>(this T? t) where T : struct
-    {
-        if (t.HasValue)
-            yield return t.Value;
-    }
-
-
-    public static T ThrowIfNull<T>(this T? t, String message) where T:struct
-    {
-        if (!t.HasValue)
-            throw new NullReferenceException(message);
-
-        return t.Value;
-    }
 }

csharp/Lib/Utils/NullableUtilsClass.Class.cs

@@ -0,0 +1,26 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace InnovEnergy.Lib.Utils;
+
+public static class NullableUtilsClass
+{
+    public static IEnumerable<T> ToEnumerable<T>(this T? t) where T : class
+    {
+        if (t is not null)
+            yield return t;
+    }
+
+    public static T ThrowIfNull<T>(this T? t) where T : class => ThrowIfNull(t, null);
+
+    public static T ThrowIfNull<T>(this T? t, String? message) where T : class
+    {
+        if (t is null)
+            throw new NullReferenceException(message);
+
+        return t;
+    }
+    
+    public static Boolean IsNull<T>([NotNullWhen(returnValue: false)] this T? t) where T : class => t is null;
+    
+    public static T? As<T>(this Object t) where T : class => t as T;
+}

csharp/Lib/Utils/NullableUtilsStruct.Struct.cs

@@ -0,0 +1,24 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace InnovEnergy.Lib.Utils;
+
+public static class NullableUtilsStruct
+{
+    public static IEnumerable<T> ToEnumerable<T>(this T? t) where T : struct
+    {
+        if (t.HasValue)
+            yield return t.Value;
+    }
+
+    public static T ThrowIfNull<T>(this T? t) where T : struct => ThrowIfNull(t, null);
+
+    public static T ThrowIfNull<T>(this T? t, String? message) where T : struct
+    {
+        if (!t.HasValue)
+            throw new NullReferenceException(message);
+
+        return t.Value;
+    }
+    
+    public static Boolean IsNull<T>([NotNullWhen(returnValue: false)] this T? t) where T : struct => t.HasValue;
+}

csharp/Lib/Utils/Result.cs

@@ -0,0 +1,104 @@
+namespace InnovEnergy.Lib.Utils;
+
+
+// TODO: discriminated union
+public abstract record Result<T> 
+{
+    public sealed record Success(T      Value) : Result<T>;
+    public sealed record Failure(String Error) : Result<T>;
+
+    public Boolean IsError => this is Failure;
+    public Boolean IsOk    => this is Success;
+    
+    public static implicit operator Result<T>(T t)      => new Success(t);
+    public static implicit operator Result<T>(String e) => new Failure(e);
+}
+
+public abstract record Result<T, E>
+{
+    public sealed record Success(T Value) : Result<T, E>;
+    public sealed record Failure(E Error) : Result<T, E>;
+
+    public Boolean IsError => this is Failure;
+    public Boolean IsOk    => this is Success;
+    
+    public static implicit operator Result<T, E>(T t) => new Success(t);
+    public static implicit operator Result<T, E>(E e) => new Failure(e);
+    
+    public R Map<R>(Func<T, R> onSuccess, Func<E, R> onFailure) => this switch
+    {
+        Success s => onSuccess(s.Value),
+        Failure f => onFailure(f.Error),
+        _         => throw new ArgumentOutOfRangeException()
+    };
+
+    public Result<R, E> OnSuccess<R>(Func<T, R> onOk) => this switch
+    {
+        Success s => onOk(s.Value),
+        Failure f => f.Error,
+        _         => throw new ArgumentOutOfRangeException()
+    };
+
+    public Result<T, R> OnFailure<R>(Func<E, R> onError) => this switch
+    {
+        Success s => s.Value,
+        Failure f => onError(f.Error),
+        _         => throw new ArgumentOutOfRangeException()
+    };
+}
+
+public static class Result
+{
+    public static Result<T, Exception> Try<T>(Func<T> func)
+    {
+        try
+        {
+            return func();
+        }
+        catch (Exception e)
+        {
+            return e;
+        }
+    }
+
+    public static String? GetError<T>(this Result<T> r) 
+    {
+        return r is Result<T>.Failure err 
+             ? err.Error 
+             : null;
+    }
+}
+
+public static class ResultClass
+{
+    public static T? GetValue<T>(this Result<T> r) where T : class
+    {
+        return r is Result<T>.Success ok 
+             ? ok.Value 
+             : null;
+    }
+
+    public static E? GetError<T, E>(this Result<T, E> r) where E : class
+    {
+        return r is Result<T, E>.Failure err
+             ? err.Error
+             : null;
+    }
+}
+
+public static class ResultStruct
+{
+    public static T? GetValue<T>(this Result<T> r) where T : struct
+    {
+        return r is Result<T>.Success ok 
+             ? ok.Value 
+             : null;
+    }
+    
+    public static E? GetError<T, E>(this Result<T, E> r) where E : struct
+    {
+        return r is Result<T,E>.Failure err 
+             ? err.Error 
+             : null;
+    }
+}

csharp/Lib/Utils/StringUtils.cs

@@ -376,5 +376,10 @@ public static class StringUtils
         return $"{prefix}{target.TrimStart(prefix)}";
     }
     
+    public static String EnsureEndsWith(this String target, String postfix)
+    {
+        return $"{target.TrimEnd(postfix)}{postfix}";
+    }
+
 
 }

csharp/Lib/Utils/Utils.cs

@@ -6,9 +6,10 @@ using static System.Runtime.CompilerServices.MethodImplOptions;
 
 namespace InnovEnergy.Lib.Utils;
 
+
 public static class Utils
 {
-    public static Boolean IsNull<T>([NotNullWhen(returnValue: false)] this T t) => t is null;
+
 
     public static IEnumerable<String> GetEnumStrings<T>(this T e) where T : Enum
     {
@@ -169,9 +170,5 @@ public static class Utils
             CopyFilesRecursively(dir, target.CreateSubdirectory(dir.Name));
     }
 
-
     public static String ExecutingProcessName => Process.GetCurrentProcess().ProcessName;
-    
-    
- 
 }

csharp/Lib/Utils/Utils.csproj

@@ -1,8 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-    <PropertyGroup>
-      <Configurations>Debug;Release;Release-Server</Configurations>
-      <Platforms>AnyCPU;linux-arm</Platforms>
-    </PropertyGroup>
     <Import Project="../InnovEnergy.Lib.props" />
 
     <PropertyGroup>
@@ -12,6 +8,7 @@
     <ItemGroup>
       <PackageReference Include="CliWrap" Version="3.6.0" />
       <PackageReference Include="DecimalMath.DecimalEx" Version="1.0.2" />
+      <PackageReference Include="System.Linq.Async" Version="6.0.1" />
       <PackageReference Include="System.Reactive.Linq" Version="5.0.0" />
     </ItemGroup>
 

csharp/Lib/Utils/WIP/Result.cs

@@ -1,9 +0,0 @@
-namespace InnovEnergy.Lib.Utils.WIP;
-
-
-// TODO: discriminated union
-public abstract record Result
-{
-    public sealed record Ok(Object Result) : Result;
-    public sealed record Error(String Message) : Result;
-}

csharp/Lib/Victron/VictronVRM/Installation.cs

@@ -1,5 +1,4 @@
 using System.Text.Json.Nodes;
-using InnovEnergy.Lib.Time.Unix;
 using InnovEnergy.Lib.Utils;
 
 // ReSharper disable StringLiteralTypo
@@ -9,8 +8,8 @@ namespace InnovEnergy.Lib.Victron.VictronVRM;
 public readonly partial record struct Installation(VrmAccount VrmAccount, JsonNode Json)
 {
 
-    public UInt64   IdSite      => Json.GetUInt64("idSite");
+    public UInt64 IdSite      => Json.GetUInt64("idSite");
-    public UnixTime Created     => Json.GetUInt32("syscreated").Apply(UnixTime.FromTicks);
+    public UInt32 Created     => Json.GetUInt32("syscreated");
     
     // Settings
 

csharp/Lib/Victron/VictronVRM/VictronVRM.csproj

@@ -17,7 +17,6 @@
     
     <ItemGroup>
       <ProjectReference Include="../../Utils/Utils.csproj" />
-      <ProjectReference Include="../../Time/Time.csproj" />
     </ItemGroup>
 
     <ItemGroup>

csharp/Lib/WebServer/HttpExtensions.cs

@@ -11,10 +11,9 @@ public static class HttpExtensions
     {
         var headers = req.Headers;
         return headers
-            .AllKeys
+              .AllKeys
-            .EmptyIfNull()
+              .EmptyIfNull()
-            .Where(k => k != null)
+              .Select(k => new HttpHeader(k!, headers[k]!));
-            .Select(k => new HttpHeader(k!, headers[k]!));
     }