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

namespace BlueLaminate.EFCore.Configurations;

public class TradeConfiguration : IEntityTypeConfiguration<Trade>
{
    public void Configure(EntityTypeBuilder<Trade> entity)
    {
        // Steam's trade id is the natural key for an observed trade. Nullable (some
        // trades are reconstructed without one); Postgres keeps multiple NULLs distinct.
        entity.HasIndex(e => e.SteamTradeId).IsUnique();

        entity.HasOne(e => e.FromUser)
            .WithMany(u => u.TradesSent)
            .HasForeignKey(e => e.FromUserId)
            .OnDelete(DeleteBehavior.Restrict);

        entity.HasOne(e => e.ToUser)
            .WithMany(u => u.TradesReceived)
            .HasForeignKey(e => e.ToUserId)
            .OnDelete(DeleteBehavior.Restrict);
    }
}