using BlueLaminate.EFCore.Entities;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;

namespace BlueLaminate.EFCore.Configurations;

public class ListingConfiguration : IEntityTypeConfiguration<Listing>
{
    public void Configure(EntityTypeBuilder<Listing> entity)
    {
        // CSFloat's listing id is the natural key; the incremental sweep upserts
        // against it and must never create duplicates.
        entity.HasIndex(e => e.CsFloatListingId).IsUnique();

        entity.Property(e => e.Price).HasPrecision(18, 2);
        // Full precision to match SkinInstance for exact fingerprint joins.
        entity.Property(e => e.FloatValue).HasColumnType("numeric(20,18)");

        // Store the enum as text so the DB is self-describing (matches the
        // project's readable-data leaning over opaque ints).
        entity.Property(e => e.Status).HasConversion<string>();

        // The sweep filters/sorts by item identity and by what's still active.
        entity.HasIndex(e => new { e.DefIndex, e.PaintIndex });
        entity.HasIndex(e => e.Status);

        // Best-effort catalogue link: a global sweep sees items we may not have,
        // so the FK is optional and set null if the skin is later removed.
        entity.HasOne(e => e.Skin)
            .WithMany()
            .HasForeignKey(e => e.SkinId)
            .OnDelete(DeleteBehavior.SetNull);

        // Wear band the sweep targeted (set directly from the sweep unit, not
        // best-effort). Set null on delete so a condition row can change without
        // blocking its listings — matching the cs.money/skin.land tables.
        entity.HasOne(e => e.Condition)
            .WithMany()
            .HasForeignKey(e => e.ConditionId)
            .OnDelete(DeleteBehavior.SetNull);

        // Listings roll up to the physical item they represent.
        entity.HasOne(e => e.SkinInstance)
            .WithMany(i => i.Listings)
            .HasForeignKey(e => e.SkinInstanceId)
            .OnDelete(DeleteBehavior.SetNull);

        // Dupe analysis groups a fingerprint's listings by asset id.
        entity.HasIndex(e => e.AssetId);
    }
}