Sessions: Sidebar, Session-Wechsel, Archivieren-Button, alles session-bezogen

Endpoints/SessionEndpoint.cs

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+using System.Linq;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Gott.Services;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+
+namespace Gott.Endpoints;
+
+public static class SessionEndpoint
+{
+    public static void MapSessionEndpoints(this IEndpointRouteBuilder app)
+    {
+        app.MapGet("/api/sessions", HandleList);
+        app.MapPost("/api/sessions", HandleCreate);
+        app.MapPut("/api/sessions/{sessionId}", HandleUpdate);
+    }
+
+    private static async Task HandleList(HttpContext ctx, DatabaseService db)
+    {
+        var sessions = await db.GetSessions();
+        await ctx.Response.WriteAsJsonAsync(sessions);
+    }
+
+    private static async Task HandleCreate(HttpContext ctx, DatabaseService db)
+    {
+        var session = await db.CreateSession("Neue Session");
+        await ctx.Response.WriteAsJsonAsync(session);
+    }
+
+    private static async Task HandleUpdate(HttpContext ctx, DatabaseService db)
+    {
+        var sessionId = ctx.Request.RouteValues["sessionId"]?.ToString();
+        if (string.IsNullOrEmpty(sessionId))
+        {
+            ctx.Response.StatusCode = 400;
+            return;
+        }
+
+        var body = await JsonSerializer.DeserializeAsync<JsonElement>(ctx.Request.Body);
+        if (body.TryGetProperty("name", out var nameEl))
+        {
+            await db.UpdateSessionName(sessionId, nameEl.GetString());
+        }
+
+        var session = await db.GetSession(sessionId);
+        await ctx.Response.WriteAsJsonAsync(session);
+    }
+}