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WorkTime.Database/DatabaseContext.cs

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+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using WorkTime.Models;
+
+namespace WorkTime.Database;
+
+internal sealed class DatabaseContext(DbContextOptions<DatabaseContext> options) : DbContext(options) {
+
+    public DbSet<TimeEntry> Entries { get; set; }
+    
+}
+
+internal sealed class DbMigrationService(IServiceProvider provider) : IHostedService {
+    public async Task StartAsync(CancellationToken cancellationToken) {
+        await using var scope = provider.CreateAsyncScope();
+        var context = scope.ServiceProvider.GetRequiredService<DatabaseContext>();
+
+        await context.Database.MigrateAsync(cancellationToken);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+}