using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
using Tiku.Domain.Content;
using Tiku.Domain.Identity;
using Tiku.Domain.Learning;
using Tiku.Domain.Tenancy;

namespace Tiku.Infrastructure.Persistence.Configurations;

internal sealed class PracticeSessionConfiguration : IEntityTypeConfiguration<PracticeSession>
{
    public void Configure(EntityTypeBuilder<PracticeSession> builder)
    {
        builder.ConfigureTenantEntity("practice_sessions");
        builder.HasAlternateKey(entity => new { entity.TenantId, entity.UserId, entity.Id });
        builder.Property(entity => entity.Mode).HasMaxLength(50);
        builder.Property(entity => entity.ResourceType).HasSnakeCaseEnum();
        builder.Property(entity => entity.StartedAt).HasDefaultValueSql("now()");
        builder.Property(entity => entity.TotalScore).HasPrecision(8, 2);
        builder.Property(entity => entity.Status).HasSnakeCaseEnum().HasDefaultValue(PracticeSessionStatus.Active);
        builder.Property(entity => entity.Version).IsConcurrencyToken().HasDefaultValue(1L);
        builder.Property(entity => entity.AccessMode)
            .HasSnakeCaseEnum()
            .HasDefaultValue(PracticeAccessMode.Free);
        builder.Property(entity => entity.AccessSnapshot).IsJson("{}");
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.StrongRevocationVersion });
        builder.Property(entity => entity.Metadata).IsJson("{}");
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.StartedAt });
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.Status, entity.StartedAt });

        builder.ToTable(table =>
        {
            table.HasCheckConstraint(
                "ck_practice_sessions_consumed_free_quota",
                "consumed_free_quota >= 0");
        });

        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
    }
}

internal sealed class PracticeSessionQuestionConfiguration : IEntityTypeConfiguration<PracticeSessionQuestion>
{
    public void Configure(EntityTypeBuilder<PracticeSessionQuestion> builder)
    {
        builder.ConfigureTenantEntity("practice_session_questions");
        builder.HasAlternateKey(entity => new { entity.TenantId, entity.PracticeSessionId, entity.Id });
        builder.HasIndex(entity => new { entity.TenantId, entity.PracticeSessionId, entity.Position }).IsUnique();
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.PracticeSessionId,
            entity.ContentReleaseQuestionId
        }).IsUnique();
        builder.HasIndex(entity => new { entity.QuestionOwnerTenantId, entity.ContentReleaseQuestionId })
            .HasDatabaseName("ix_psq_release_question");
        builder.HasIndex(entity => new { entity.QuestionOwnerTenantId, entity.QuestionAssetId })
            .HasDatabaseName("ix_psq_question_asset");
        builder.HasIndex(entity => new
        {
            entity.QuestionOwnerTenantId,
            entity.QuestionAssetId,
            entity.QuestionRevisionId
        })
            .HasDatabaseName("ix_psq_question_revision");
        builder.HasIndex(entity => new { entity.QuestionOwnerTenantId, entity.QuestionPlacementId })
            .HasDatabaseName("ix_psq_question_placement");
        builder.HasIndex(entity => new { entity.QuestionOwnerTenantId, entity.AssessmentPolicyVersionId })
            .HasDatabaseName("ix_psq_assessment_policy");
        builder.Property(entity => entity.Score).HasPrecision(8, 2);
        builder.Property(entity => entity.QuestionType).HasMaxLength(50).HasDefaultValue("choice");
        builder.Property(entity => entity.TypeLabelSnapshot).HasMaxLength(100);
        builder.Property(entity => entity.TagsSnapshot).IsJson("[]");
        builder.Property(entity => entity.GradingRulesSnapshot).IsJson("{}");
        builder.Property(entity => entity.SnapshotVersion).HasDefaultValue(1);

        builder.HasOne<PracticeSession>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, entity.PracticeSessionId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<ContentReleaseQuestion>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionOwnerTenantId,
                Id = entity.ContentReleaseQuestionId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionAsset>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionOwnerTenantId,
                Id = entity.QuestionAssetId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionRevision>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionOwnerTenantId,
                entity.QuestionAssetId,
                Id = entity.QuestionRevisionId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.QuestionAssetId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionPlacement>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionOwnerTenantId,
                Id = entity.QuestionPlacementId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<AssessmentPolicyVersion>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionOwnerTenantId,
                Id = entity.AssessmentPolicyVersionId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class AnswerRecordConfiguration : IEntityTypeConfiguration<AnswerRecord>
{
    public void Configure(EntityTypeBuilder<AnswerRecord> builder)
    {
        builder.ConfigureTenantEntity("answer_records");
        builder.Property(entity => entity.LegacyId).HasMaxLength(64);
        builder.Property(entity => entity.LegacyQuestionId).HasMaxLength(64);
        builder.Property(entity => entity.LegacyCategoryId).HasMaxLength(64);
        builder.Property(entity => entity.SelectedOptions).IsJson("[]");
        builder.Property(entity => entity.GradingStatus).HasSnakeCaseEnum()
            .HasDefaultValue(AnswerGradingStatus.PendingReview);
        builder.Property(entity => entity.AwardedScore).HasPrecision(8, 2);
        builder.Property(entity => entity.IdempotencyKey).HasMaxLength(200);
        builder.Property(entity => entity.RequestHash).HasMaxLength(64);
        builder.Property(entity => entity.Revision).HasDefaultValue(1);
        builder.Property(entity => entity.AnsweredAt).HasDefaultValueSql("now()");
        builder.Property(entity => entity.CreatedAt).HasDefaultValueSql("now()");
        builder.HasIndex(entity => new { entity.TenantId, entity.LegacyId }).IsUnique();
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId
        });
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId,
            entity.ClientSequence
        }).IsUnique();
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId,
            entity.IdempotencyKey
        }).IsUnique().HasDatabaseName("ux_answer_records_idempotency");
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId,
            entity.SessionQuestionId,
            entity.Revision
        }).IsUnique().HasDatabaseName("ux_answer_records_session_question_revision");

        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<PracticeSession>().WithMany()
            .HasForeignKey(entity => new
            {
                entity.TenantId,
                entity.UserId,
                entity.PracticeSessionId
            })
            .HasPrincipalKey(entity => new
            {
                entity.TenantId,
                entity.UserId,
                entity.Id
            })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<PracticeSessionQuestion>().WithMany()
            .HasForeignKey(entity => new
            {
                entity.TenantId,
                entity.PracticeSessionId,
                Id = entity.SessionQuestionId
            })
            .HasPrincipalKey(entity => new
            {
                entity.TenantId,
                entity.PracticeSessionId,
                entity.Id
            })
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class CurrentAnswerConfiguration : IEntityTypeConfiguration<CurrentAnswer>
{
    public void Configure(EntityTypeBuilder<CurrentAnswer> builder)
    {
        builder.ConfigureTenantEntity("current_answers");
        builder.Property(entity => entity.Version).IsConcurrencyToken().HasDefaultValue(1L);
        builder.Property(entity => entity.UpdatedAt).HasDefaultValueSql("now()");
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId,
            entity.SessionQuestionId
        }).IsUnique().HasDatabaseName("ux_current_answers_session_question");

        builder.HasOne<AnswerRecord>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, Id = entity.AnswerRecordId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<PracticeSessionQuestion>().WithMany()
            .HasForeignKey(entity => new
            {
                entity.TenantId,
                entity.PracticeSessionId,
                Id = entity.SessionQuestionId
            })
            .HasPrincipalKey(entity => new
            {
                entity.TenantId,
                entity.PracticeSessionId,
                entity.Id
            })
            .OnDelete(DeleteBehavior.Cascade);
    }
}

internal sealed class LearningOperationIdempotencyConfiguration : IEntityTypeConfiguration<LearningOperationIdempotency>
{
    public void Configure(EntityTypeBuilder<LearningOperationIdempotency> builder)
    {
        builder.ConfigureEntity("learning_operation_idempotencies");
        builder.HasAlternateKey(entity => new { entity.TenantId, entity.Id });
        builder.Property(entity => entity.OperationType).HasMaxLength(50);
        builder.Property(entity => entity.IdempotencyKey).HasMaxLength(200);
        builder.Property(entity => entity.RequestHash).HasMaxLength(64);
        builder.Property(entity => entity.ResponseSnapshot).IsJson("{}");
        builder.Property(entity => entity.CreatedAt).HasDefaultValueSql("now()");
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.PracticeSessionId,
            entity.OperationType,
            entity.IdempotencyKey
        }).IsUnique();

        builder.HasOne<Tenant>().WithMany()
            .HasForeignKey(entity => entity.TenantId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<PracticeSession>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, entity.UserId, Id = entity.PracticeSessionId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.UserId, entity.Id })
            .OnDelete(DeleteBehavior.Cascade);
    }
}

internal sealed class FavoriteQuestionConfiguration : IEntityTypeConfiguration<FavoriteQuestion>
{
    public void Configure(EntityTypeBuilder<FavoriteQuestion> builder)
    {
        builder.ToTable("favorite_questions");
        builder.HasKey(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.QuestionAssetOwnerTenantId,
            entity.QuestionAssetId
        });
        builder.Property(entity => entity.CreatedAt).HasDefaultValueSql("now()");
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.CreatedAt });

        builder.HasOne<Tenant>().WithMany()
            .HasForeignKey(entity => entity.TenantId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
        ConfigureQuestionAssetEvidence(builder);
    }

    private static void ConfigureQuestionAssetEvidence(EntityTypeBuilder<FavoriteQuestion> builder)
    {
        builder.HasOne<QuestionAsset>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                Id = entity.QuestionAssetId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionRevision>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                entity.QuestionAssetId,
                Id = entity.LastQuestionRevisionId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.QuestionAssetId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionPlacement>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                Id = entity.LastQuestionPlacementId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class WrongQuestionConfiguration : IEntityTypeConfiguration<WrongQuestion>
{
    public void Configure(EntityTypeBuilder<WrongQuestion> builder)
    {
        builder.ToTable("wrong_questions");
        builder.HasKey(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.QuestionAssetOwnerTenantId,
            entity.QuestionAssetId
        });
        builder.Property(entity => entity.WrongCount).HasDefaultValue(1);
        builder.Property(entity => entity.LastWrongAt).HasDefaultValueSql("now()");
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.LastWrongAt });

        builder.HasOne<Tenant>().WithMany()
            .HasForeignKey(entity => entity.TenantId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<QuestionAsset>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                Id = entity.QuestionAssetId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionRevision>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                entity.QuestionAssetId,
                Id = entity.LastQuestionRevisionId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.QuestionAssetId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<QuestionPlacement>().WithMany()
            .HasForeignKey(entity => new
            {
                TenantId = entity.QuestionAssetOwnerTenantId,
                Id = entity.LastQuestionPlacementId
            })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class RecentPracticeConfiguration : IEntityTypeConfiguration<RecentPractice>
{
    public void Configure(EntityTypeBuilder<RecentPractice> builder)
    {
        builder.ConfigureTenantEntity("recent_practices");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.LegacyId).HasMaxLength(64);
        builder.Property(entity => entity.PracticeType).HasMaxLength(50);
        builder.Property(entity => entity.TargetLegacyId).HasMaxLength(64);
        builder.Property(entity => entity.TargetName).HasMaxLength(300);
        builder.Property(entity => entity.Color).HasMaxLength(50);
        builder.Property(entity => entity.Metadata).IsJson("{}");
        builder.HasIndex(entity => new { entity.TenantId, entity.LegacyId }).IsUnique();
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.LastAccessAt });

        builder.HasOne<User>().WithMany()
            .HasForeignKey(entity => entity.UserId)
            .OnDelete(DeleteBehavior.Cascade);
    }
}