using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
using Nuuru.Server.Models;

namespace Nuuru.Server.Data.EntityConfigurations
{
    public class ReactionConfiguration : IEntityTypeConfiguration<Reaction>
    {
        public void Configure(EntityTypeBuilder<Reaction> builder)
        {
            // Unique constraint: one user can only react with a specific emote once per entity
            builder.HasIndex(r => new { r.EntityType, r.EntityId, r.UserId, r.EmoteName })
                .IsUnique();

            // Index for fetching reactions by entity
            builder.HasIndex(r => new { r.EntityType, r.EntityId });

            // Index for grouped reaction summaries by emote
            builder.HasIndex(r => new { r.EntityType, r.EntityId, r.EmoteName });

            // Index for user's reactions
            builder.HasIndex(r => r.UserId);
        }
    }
}