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

namespace BlueLaminate.EFCore.Configurations;

public class SkinInstanceConfiguration : IEntityTypeConfiguration<SkinInstance>
{
    public void Configure(EntityTypeBuilder<SkinInstance> entity)
    {
        // Full precision so exact-match dupe detection isn't defeated by rounding.
        // CSFloat returns deterministic ~17-digit floats; numeric(20,18) holds them.
        entity.Property(e => e.FloatValue).HasColumnType("numeric(20,18)");

        // The fingerprint that identifies a physical item. NOT unique: duped items
        // legitimately share a fingerprint, and detecting that collision is the
        // point. Indexed for fast fingerprint resolution during the sweep.
        entity.HasIndex(e => new
        {
            e.SkinId,
            e.FloatValue,
            e.PaintSeed,
            e.StatTrak,
            e.Souvenir,
        });

        // Surfacing fresh dupes is a hot query.
        entity.HasIndex(e => e.SuspectedDupe);

        entity.HasOne(e => e.Skin)
            .WithMany(s => s.Instances)
            .HasForeignKey(e => e.SkinId);

        // Condition is optional now (derived from float later); set null on delete
        // rather than restrict so condition rows can change without blocking.
        entity.HasOne(e => e.Condition)
            .WithMany(c => c.Instances)
            .HasForeignKey(e => e.ConditionId)
            .OnDelete(DeleteBehavior.SetNull);
    }
}