using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Nuuru.Server.Models.Booru
{
    public class TagCategory
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public Guid Id { get; set; } = Guid.NewGuid();
        [MaxLength(100)]
        public string Name { get; set; } = null!;          // e.g., "Artist"
        [MaxLength(100)]
        public string Slug { get; set; } = null!;          // normalized, unique: "artist"
        public string? ColorHex { get; set; }              // UI badge color, e.g., "#e57373"
        public int SortOrder { get; set; }                 // UI ordering
        public bool IsActive { get; set; } = true;
        public int? MaxPerPost { get; set; }               // e.g., 1 for artist, null for unlimited
        public Guid? ParentCategoryId { get; set; }         // optional hierarchy
        public TagCategory? ParentCategory { get; set; }
        public ICollection<TagCategory> Children { get; set; } = new List<TagCategory>();
        public uint Version { get; set; }
        public ICollection<Tag> Tags { get; set; } = new List<Tag>();
    }

    public class Tag
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public Guid Id { get; set; } = Guid.NewGuid();
        [MaxLength(250)]
        public string Name { get; set; } = string.Empty; //tagme of meta:tagme
        public TagCategory? Category { get; set; } //meta of meta:tagme
        public int PostCount { get; set; }
        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
        public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;

        public ICollection<PostTag> PostTags { get; set; } = new List<PostTag>();

        // Tag aliases - where this tag IS the alias (source)
        public ICollection<TagAlias> AliasesAsSource { get; set; } = new List<TagAlias>();
        // Tag aliases - where this tag IS the target (canonical)
        public ICollection<TagAlias> AliasesAsTarget { get; set; } = new List<TagAlias>();
        // Tag implications - where this tag is the antecedent (trigger)
        public ICollection<TagImplication> ImplicationsAsAntecedent { get; set; } = new List<TagImplication>();
        // Tag implications - where this tag is the consequent (implied)
        public ICollection<TagImplication> ImplicationsAsConsequent { get; set; } = new List<TagImplication>();
    }
}