using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;

public class DraftObservationConfiguration : IEntityTypeConfiguration<DraftObservation>
{
    public void Configure(EntityTypeBuilder<DraftObservation> builder)
    {
        builder.ToTable("draft_observations");
        builder.HasKey(o => o.Id);
        builder.Property(o => o.Id).HasColumnName("id").HasDefaultValueSql("gen_random_uuid()");
        builder.Property(o => o.BatchId).HasColumnName("batch_id").IsRequired();
        builder.Property(o => o.ObservationCode).HasColumnName("observation_code").HasMaxLength(50).IsRequired();
        builder.Property(o => o.Value).HasColumnName("value").HasColumnType("decimal(10,3)").IsRequired();
        builder.Property(o => o.Unit).HasColumnName("unit").HasMaxLength(20).IsRequired();
        builder.Property(o => o.RecordedAt).HasColumnName("recorded_at").IsRequired();
        builder.Property(o => o.Note).HasColumnName("note").HasMaxLength(500);
        builder.Property(o => o.CreatedAt).HasColumnName("created_at").HasDefaultValueSql("NOW()");

        builder.HasOne(o => o.Batch).WithMany(b => b.DraftObservations).HasForeignKey(o => o.BatchId).OnDelete(DeleteBehavior.Cascade);
        builder.HasIndex(o => new { o.BatchId, o.ObservationCode });
    }
}