dpot-backend/Infrastructure/Persistence/Configurations/Donations/DonationRankingConfiguration.cs

using Domain.Entities.Donations;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;

namespace Infrastructure.Persistence.Configurations.Donations;

public class DonationRankingConfiguration : IEntityTypeConfiguration<DonationRanking>
{
    public void Configure(EntityTypeBuilder<DonationRanking> builder)
    {
        builder.ToTable(nameof(DonationRanking), x => x.HasComment("후원 순위"));
        builder.HasKey(x => x.ID);

        builder.HasOne(x => x.Channel).WithMany().HasForeignKey(x => x.ChannelID).OnDelete(DeleteBehavior.Cascade);
        builder.HasOne(x => x.Sponsor).WithMany().HasForeignKey(x => x.SponsorMemberID).OnDelete(DeleteBehavior.NoAction);

        builder.HasIndex(x => new { x.ChannelID, x.SponsorMemberID, x.PeriodType, x.PeriodStart }).IsUnique();
        builder.HasIndex(x => new { x.ChannelID, x.PeriodType, x.PeriodStart, x.Rank });

        builder.Property(x => x.SponsorName).HasMaxLength(40).IsRequired();
    }
}