Initial project import

2026-07-24 23:11:20 +08:00
commit 6396eabb87
372 changed files with 49682 additions and 0 deletions
@@ -0,0 +1,53 @@
+using MiaoJiZhang.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+
+namespace MiaoJiZhang.Api.Services;
+
+public class RecycleBinCleanupService(
+    IServiceScopeFactory scopeFactory,
+    ILogger<RecycleBinCleanupService> logger) : BackgroundService
+{
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        await Cleanup(stoppingToken);
+        using var timer = new PeriodicTimer(TimeSpan.FromHours(24));
+        while (await timer.WaitForNextTickAsync(stoppingToken))
+            await Cleanup(stoppingToken);
+    }
+
+    private async Task Cleanup(CancellationToken ct)
+    {
+        try
+        {
+            using var scope = scopeFactory.CreateScope();
+            var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+            var cutoff = DateTime.UtcNow.AddDays(-30);
+            var ids = await db.Transactions.IgnoreQueryFilters()
+                .Where(t => t.IsDeleted && t.DeletedAt < cutoff)
+                .Select(t => t.Id)
+                .ToListAsync(ct);
+            if (ids.Count == 0) return;
+
+            await db.ChatMessages
+                .Where(message =>
+                    message.TransactionId.HasValue &&
+                    ids.Contains(message.TransactionId.Value))
+                .ExecuteUpdateAsync(setters => setters
+                    .SetProperty(message => message.TransactionId, (long?)null)
+                    .SetProperty(message => message.Content, """{"deleted":true}"""), ct);
+            await db.Transactions.IgnoreQueryFilters()
+                .Where(t => ids.Contains(t.Id))
+                .ExecuteDeleteAsync(ct);
+            logger.LogInformation(
+                "Permanently removed {Count} transactions after recycle-bin retention",
+                ids.Count);
+        }
+        catch (OperationCanceledException) when (ct.IsCancellationRequested)
+        {
+        }
+        catch (Exception exception)
+        {
+            logger.LogError(exception, "Recycle-bin cleanup failed");
+        }
+    }
+}