fix: migrate to IDbContextFactory and remove direct AppDbContext from DI

Reviewed-on: #10
Co-authored-by: Marek Jasiński <jasins.marek@gmail.com>
Co-committed-by: Marek Jasiński <jasins.marek@gmail.com>

src/NexusReader.Infrastructure/Identity/TokenLimitHandler.cs

@@ -3,6 +3,7 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity;
 using NexusReader.Domain.Entities;
 using NexusReader.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
 
 namespace NexusReader.Infrastructure.Identity;
 
@@ -11,12 +12,12 @@ namespace NexusReader.Infrastructure.Identity;
 /// </summary>
 public class TokenLimitHandler : AuthorizationHandler<TokenLimitRequirement>
 {
-    private readonly AppDbContext _dbContext;
+    private readonly IDbContextFactory<AppDbContext> _dbContextFactory;
     private readonly UserManager<NexusUser> _userManager;
 
-    public TokenLimitHandler(AppDbContext dbContext, UserManager<NexusUser> userManager)
+    public TokenLimitHandler(IDbContextFactory<AppDbContext> dbContextFactory, UserManager<NexusUser> userManager)
     {
-        _dbContext = dbContext;
+        _dbContextFactory = dbContextFactory;
         _userManager = userManager;
     }
 

src/NexusReader.UI.Shared/Services/KnowledgeCoordinator.cs

@@ -7,7 +7,7 @@ using Microsoft.Extensions.Logging;
 
 namespace NexusReader.UI.Shared.Services;
 
-public sealed class KnowledgeCoordinator : IDisposable
+public sealed partial class KnowledgeCoordinator : IDisposable
 {
     private readonly IKnowledgeService _knowledgeService;
     private readonly IKnowledgeGraphService _graphService;
@@ -46,7 +46,7 @@ public sealed class KnowledgeCoordinator : IDisposable
     {
         if (string.IsNullOrWhiteSpace(fullContent)) return;
 
-        _logger.LogInformation("[KnowledgeCoordinator] Generating full page graph for tenant: {TenantId}", tenantId);
+        LogGeneratingGraph(tenantId);
         
         _graphService.Clear();
         _graphService.SetLoading(true);
@@ -67,7 +67,7 @@ public sealed class KnowledgeCoordinator : IDisposable
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "[KnowledgeCoordinator] Error generating graph for tenant: {TenantId}", tenantId);
+            LogGraphError(ex, tenantId);
         }
     }
 
@@ -80,7 +80,7 @@ public sealed class KnowledgeCoordinator : IDisposable
     public async Task<KnowledgePacket?> RequestSummaryAndQuizAsync(string content, string tenantId = "global")
     {
         _quizService.SetHydrating(true);
-        _logger.LogInformation("[KnowledgeCoordinator] Requesting summary and quiz for tenant: {TenantId}", tenantId);
+        LogRequestingSummary(tenantId);
         try
         {
             var result = await _knowledgeService.GetSummaryAndQuizAsync(content, tenantId);
@@ -96,11 +96,11 @@ public sealed class KnowledgeCoordinator : IDisposable
                 return packet;
             }
 
-            _logger.LogWarning("[KnowledgeCoordinator] Failed to get summary and quiz for tenant: {TenantId}", tenantId);
+            LogSummaryWarning(tenantId);
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "[KnowledgeCoordinator] Error requesting summary and quiz for tenant: {TenantId}", tenantId);
+            LogSummaryError(ex, tenantId);
         }
         finally
         {
@@ -119,4 +119,19 @@ public sealed class KnowledgeCoordinator : IDisposable
     {
         _interactionService.OnNodeSelected -= HandleNodeSelected;
     }
+
+    [LoggerMessage(Level = LogLevel.Information, Message = "[KnowledgeCoordinator] Generating full page graph for tenant: {TenantId}")]
+    private partial void LogGeneratingGraph(string tenantId);
+
+    [LoggerMessage(Level = LogLevel.Error, Message = "[KnowledgeCoordinator] Error generating graph for tenant: {TenantId}")]
+    private partial void LogGraphError(Exception ex, string tenantId);
+
+    [LoggerMessage(Level = LogLevel.Information, Message = "[KnowledgeCoordinator] Requesting summary and quiz for tenant: {TenantId}")]
+    private partial void LogRequestingSummary(string tenantId);
+
+    [LoggerMessage(Level = LogLevel.Warning, Message = "[KnowledgeCoordinator] Failed to get summary and quiz for tenant: {TenantId}")]
+    private partial void LogSummaryWarning(string tenantId);
+
+    [LoggerMessage(Level = LogLevel.Error, Message = "[KnowledgeCoordinator] Error requesting summary and quiz for tenant: {TenantId}")]
+    private partial void LogSummaryError(Exception ex, string tenantId);
 }

src/NexusReader.Web.New/Program.cs

@@ -135,7 +135,8 @@ using (var scope = app.Services.CreateScope())
 {
     var services = scope.ServiceProvider;
     var logger = services.GetRequiredService<ILogger<Program>>();
-    var dbContext = services.GetRequiredService<NexusReader.Infrastructure.Persistence.AppDbContext>();
+    var dbContextFactory = services.GetRequiredService<IDbContextFactory<NexusReader.Infrastructure.Persistence.AppDbContext>>();
+    using var dbContext = await dbContextFactory.CreateDbContextAsync();
     
     int maxRetries = 5;
     int delayMs = 2000;