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

namespace Tiku.Infrastructure.Persistence.Configurations;

internal sealed class BusinessLineConfiguration : IEntityTypeConfiguration<BusinessLine>
{
    public void Configure(EntityTypeBuilder<BusinessLine> builder)
    {
        builder.ConfigureEntity("business_lines");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.Code).HasMaxLength(50);
        builder.Property(entity => entity.Name).HasMaxLength(100);
        builder.Property(entity => entity.RegionAccessStrategy).HasSnakeCaseEnum().HasMaxLength(64);
        builder.Property(entity => entity.TargetRegionCooldownDays).HasDefaultValue(30);
        builder.ToTable(table => table.HasCheckConstraint(
            "ck_business_lines_target_region_cooldown_days",
            "target_region_cooldown_days between 0 and 365"));
        builder.HasIndex(entity => entity.Code).IsUnique();
    }
}

internal sealed class MarketRegionConfiguration : IEntityTypeConfiguration<MarketRegion>
{
    public void Configure(EntityTypeBuilder<MarketRegion> builder)
    {
        builder.ConfigureEntity("market_regions");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.Code).HasMaxLength(50);
        builder.Property(entity => entity.Name).HasMaxLength(100);
        builder.Property(entity => entity.ParentCode).HasMaxLength(50);
        builder.HasIndex(entity => entity.Code).IsUnique();
    }
}

internal sealed class TenantLearningLicenseConfiguration : IEntityTypeConfiguration<TenantLearningLicense>
{
    public void Configure(EntityTypeBuilder<TenantLearningLicense> builder)
    {
        builder.ConfigureTenantEntity("tenant_learning_licenses");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.Status).HasSnakeCaseEnum();
        builder.Property(entity => entity.Version).IsConcurrencyToken().HasDefaultValue(1L);
        builder.HasIndex(entity => new { entity.TenantId, entity.BusinessLineId, entity.Status });
        builder.HasIndex(entity => entity.TenantId).IsUnique().HasFilter("is_primary and status = 'active'");
        builder.HasOne<BusinessLine>().WithMany().HasForeignKey(entity => entity.BusinessLineId)
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class TenantLearningLicenseRegionConfiguration : IEntityTypeConfiguration<TenantLearningLicenseRegion>
{
    public void Configure(EntityTypeBuilder<TenantLearningLicenseRegion> builder)
    {
        builder.ConfigureEntity("tenant_learning_license_regions");
        builder.HasAlternateKey(entity => new { entity.TenantId, entity.Id });
        builder.HasIndex(entity => new { entity.TenantId, entity.LicenseId, entity.MarketRegionId }).IsUnique();
        builder.HasOne<TenantLearningLicense>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, entity.LicenseId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<MarketRegion>().WithMany().HasForeignKey(entity => entity.MarketRegionId)
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class LearningProductConfiguration : IEntityTypeConfiguration<LearningProduct>
{
    public void Configure(EntityTypeBuilder<LearningProduct> builder)
    {
        builder.ConfigureTenantEntity("learning_products");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.Code).HasMaxLength(100);
        builder.Property(entity => entity.Name).HasMaxLength(200);
        builder.HasIndex(entity => new { entity.TenantId, entity.Code }).IsUnique();
        builder.HasOne<BusinessLine>().WithMany().HasForeignKey(entity => entity.BusinessLineId)
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class LearningProductScopeConfiguration : IEntityTypeConfiguration<LearningProductScope>
{
    public void Configure(EntityTypeBuilder<LearningProductScope> builder)
    {
        builder.ConfigureEntity("learning_product_scopes");
        builder.HasAlternateKey(entity => new { entity.TenantId, entity.Id });
        builder.HasIndex(entity => new { entity.TenantId, entity.ProductId, entity.ContentSliceId }).IsUnique();
        builder.HasOne<LearningProduct>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, entity.ProductId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<ContentSlice>().WithMany()
            .HasForeignKey(entity => new { TenantId = entity.ContentSliceOwnerTenantId, Id = entity.ContentSliceId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class ContentSliceConfiguration : IEntityTypeConfiguration<ContentSlice>
{
    public void Configure(EntityTypeBuilder<ContentSlice> builder)
    {
        builder.ConfigureTenantEntity("content_slices");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.RegionScope).HasSnakeCaseEnum();
        builder.Property(entity => entity.ResourceType).HasSnakeCaseEnum();
        builder.Property(entity => entity.Status).HasSnakeCaseEnum();
        builder.Property(entity => entity.ContentVersion).IsConcurrencyToken().HasDefaultValue(1L);
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.ResourceType,
            entity.ResourceId,
            entity.Status
        });
        builder.HasIndex(entity => new { entity.BusinessLineId, entity.RegionScope, entity.MarketRegionId });
        builder.HasOne<BusinessLine>().WithMany().HasForeignKey(entity => entity.BusinessLineId)
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<MarketRegion>().WithMany().HasForeignKey(entity => entity.MarketRegionId)
            .OnDelete(DeleteBehavior.Restrict);
        builder.ToTable(table => table.HasCheckConstraint(
            "ck_content_slices_region_scope",
            "(region_scope = 'national' and market_region_id is null) or (region_scope = 'region' and market_region_id is not null)"));
    }
}

internal sealed class StudentTargetRegionHistoryConfiguration : IEntityTypeConfiguration<StudentTargetRegionHistory>
{
    public void Configure(EntityTypeBuilder<StudentTargetRegionHistory> builder)
    {
        builder.ConfigureTenantEntity("student_target_region_history");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.Reason).HasMaxLength(1000);
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId, entity.BusinessLineId }).IsUnique()
            .HasDatabaseName("ux_student_target_region_current")
            .HasFilter("is_current");
        builder.HasIndex(entity => new
        {
            entity.TenantId,
            entity.UserId,
            entity.BusinessLineId,
            entity.EffectiveAt
        }).HasDatabaseName("ix_student_target_region_history");
        builder.HasOne<User>().WithMany().HasForeignKey(entity => entity.UserId).OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<BusinessLine>().WithMany().HasForeignKey(entity => entity.BusinessLineId)
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<User>().WithMany().HasForeignKey(entity => entity.ChangedBy).OnDelete(DeleteBehavior.SetNull);
        builder.HasOne<MarketRegion>().WithMany().HasForeignKey(entity => entity.MarketRegionId)
            .OnDelete(DeleteBehavior.Restrict);
    }
}

internal sealed class ClassContentAssignmentConfiguration : IEntityTypeConfiguration<ClassContentAssignment>
{
    public void Configure(EntityTypeBuilder<ClassContentAssignment> builder)
    {
        builder.ConfigureTenantEntity("class_content_assignments");
        builder.ConfigureTimestamps();
        builder.Property(entity => entity.ResourceType).HasSnakeCaseEnum();
        builder.Property(entity => entity.Status).HasSnakeCaseEnum();
        builder.Property(entity => entity.RevokedReason).HasMaxLength(1000);
        builder.HasIndex(entity => new { entity.TenantId, entity.ClassId, entity.Status, entity.StartsAt });
        builder.HasIndex(entity => new { entity.TenantId, entity.ResourceType, entity.ResourceId, entity.Status });
        builder.HasOne<TenantClass>().WithMany()
            .HasForeignKey(entity => new { entity.TenantId, entity.ClassId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Cascade);
        builder.HasOne<ContentSlice>().WithMany()
            .HasForeignKey(entity => new { TenantId = entity.ContentSliceOwnerTenantId, Id = entity.ContentSliceId })
            .HasPrincipalKey(entity => new { entity.TenantId, entity.Id })
            .OnDelete(DeleteBehavior.Restrict);
        builder.HasOne<User>().WithMany().HasForeignKey(entity => entity.CreatedBy).OnDelete(DeleteBehavior.SetNull);
        builder.HasOne<User>().WithMany().HasForeignKey(entity => entity.RevokedBy).OnDelete(DeleteBehavior.SetNull);
    }
}

internal sealed class LearningAccessVersionConfiguration : IEntityTypeConfiguration<LearningAccessVersion>
{
    public void Configure(EntityTypeBuilder<LearningAccessVersion> builder)
    {
        builder.ConfigureTenantEntity("learning_access_versions");
        builder.Property(entity => entity.GrantVersion).IsConcurrencyToken().HasDefaultValue(1L);
        builder.Property(entity => entity.ContentVersion).HasDefaultValue(1L);
        builder.Property(entity => entity.StrongRevocationVersion).HasDefaultValue(1L);
        builder.HasIndex(entity => new { entity.TenantId, entity.UserId }).IsUnique();
        builder.HasOne<User>().WithMany().HasForeignKey(entity => entity.UserId).OnDelete(DeleteBehavior.Cascade);
    }
}