claude-test/backend/ClaudeTest.Infrastructure/Persistence/AppDbContext.cs

using ClaudeTest.Domain.Common;
using Microsoft.EntityFrameworkCore;

namespace ClaudeTest.Infrastructure.Persistence;

public class AppDbContext : DbContext
{
    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
    {
    }

    public override int SaveChanges()
    {
        SetTimestamps();
        return base.SaveChanges();
    }

    public override Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
    {
        SetTimestamps();
        return base.SaveChangesAsync(cancellationToken);
    }

    private void SetTimestamps()
    {
        var entries = ChangeTracker.Entries<BaseModel>();

        foreach (var entry in entries)
        {
            switch (entry.State)
            {
                case EntityState.Added:
                    entry.Entity.Created = DateTime.UtcNow;
                    entry.Entity.Updated = DateTime.UtcNow;
                    break;
                case EntityState.Modified:
                    entry.Entity.Updated = DateTime.UtcNow;
                    break;
            }
        }
    }
}