using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
using Novelly.Api.Beats;
using Novelly.Api.Chapters;
using Novelly.Api.Common;
using Novelly.Api.Novels;
using Novelly.Api.Tags;

namespace Novelly.Api.Characters;

public class Character : ISoftDeletable
{
    public Guid Id { get; set; } = Guid.NewGuid();
    public Guid NovelId { get; set; }
    public Novel? Novel { get; set; }

    public string Name { get; set; } = string.Empty;
    public CharacterRole Role { get; set; } = CharacterRole.Supporting;

    public CharacterImportance Importance { get; set; } = CharacterImportance.Supporting;

    public string? Age { get; set; }
    public string? Pronouns { get; set; }
    public string? Occupation { get; set; }

    public string? Appearance { get; set; }
    public string? Personality { get; set; }
    public string? Backstory { get; set; }

    public string? Motivation { get; set; }

    public string? Conflict { get; set; }

    public string? Voice { get; set; }

    public string? Notes { get; set; }

    public List<string> Aliases { get; set; } = [];

    public Guid? SameCharacterAsId { get; set; }
    public Character? SameCharacterAs { get; set; }
    public List<Character> OtherIdentities { get; set; } = [];

    public Guid? RevealedInChapterId { get; set; }
    public Chapter? RevealedInChapter { get; set; }
    public string? IdentityNote { get; set; }

    public DateTimeOffset CreatedAt { get; set; } = DateTimeOffset.UtcNow;
    public DateTimeOffset UpdatedAt { get; set; } = DateTimeOffset.UtcNow;
    public DateTimeOffset? DeletedAt { get; set; }

    public List<CharacterRelationship> Relationships { get; set; } = [];
    public List<Tag> Tags { get; set; } = [];

    public List<CharacterArcStage> ArcStages { get; set; } = [];

    public List<Beat> Beats { get; set; } = [];
}

public class CharacterRelationship
{
    public Guid Id { get; set; } = Guid.NewGuid();

    public Guid CharacterId { get; set; }
    public Character? Character { get; set; }

    public Guid RelatedCharacterId { get; set; }
    public Character? RelatedCharacter { get; set; }

    public string RelationshipType { get; set; } = string.Empty;

    public string? Description { get; set; }
}

public class CharacterEntityTypeConfiguration : IEntityTypeConfiguration<Character>
{
    public void Configure(EntityTypeBuilder<Character> entity)
    {
        entity.Property(c => c.Name).IsRequired().HasMaxLength(200);
        entity.Property(c => c.Role).HasConversion<string>().HasMaxLength(32);
        entity.Property(c => c.Importance).HasConversion<string>().HasMaxLength(32);
        entity.HasIndex(c => c.NovelId);
        entity.HasIndex(c => c.SameCharacterAsId);
        entity.HasQueryFilter(c => c.DeletedAt == null);

        entity.HasMany(c => c.Relationships).WithOne(r => r.Character!)
            .HasForeignKey(r => r.CharacterId).OnDelete(DeleteBehavior.Cascade);

        entity.HasMany(c => c.ArcStages).WithOne(s => s.Character!)
            .HasForeignKey(s => s.CharacterId).OnDelete(DeleteBehavior.Cascade);

        entity.HasOne(c => c.SameCharacterAs).WithMany(c => c.OtherIdentities)
            .HasForeignKey(c => c.SameCharacterAsId).OnDelete(DeleteBehavior.SetNull);

        entity.HasOne(c => c.RevealedInChapter).WithMany()
            .HasForeignKey(c => c.RevealedInChapterId).OnDelete(DeleteBehavior.SetNull);
    }
}

public class CharacterRelationshipEntityTypeConfiguration : IEntityTypeConfiguration<CharacterRelationship>
{
    public void Configure(EntityTypeBuilder<CharacterRelationship> entity)
    {
        entity.Property(r => r.RelationshipType).IsRequired().HasMaxLength(120);

        entity.HasOne(r => r.RelatedCharacter).WithMany()
            .HasForeignKey(r => r.RelatedCharacterId).OnDelete(DeleteBehavior.Restrict);

        entity.HasQueryFilter(r => r.Character!.DeletedAt == null && r.RelatedCharacter!.DeletedAt == null);
    }
}