using System.ComponentModel.DataAnnotations;

namespace GerbilManagerWebAPI.Models
{
    /// <summary>Publication state of a CMS page (serialised as string name).</summary>
    public enum PageStatus
    {
        Draft = 0,
        Published = 1,
    }

    /// <summary>
    /// CMS block kinds. RichText holds MARKDOWN (sanitised on render). AbgabetiereList is
    /// dynamic — resolved from live ForSale animals at snapshot time. Serialised as string.
    /// </summary>
    public enum BlockType
    {
        Heading = 0,
        RichText = 1,
        Image = 2,
        Gallery = 3,
        ContactInfo = 4,
        AbgabetiereList = 5,
    }

    /// <summary>Singleton site settings (WEB epic CMS).</summary>
    public class Site
    {
        /// <summary>Fixed id — there is exactly one Site row.</summary>
        public static readonly Guid SingletonId = new("5172e000-0000-0000-0000-000000000001");

        [Key]
        public Guid Id { get; set; }
        public string DefaultLocale { get; set; } = "de";
        /// <summary>Ordered page ids for the public nav (JSON list).</summary>
        public List<Guid> NavOrder { get; set; } = new();
    }

    /// <summary>A CMS page (one of the public website's pages).</summary>
    public class Page
    {
        [Key]
        public Guid Id { get; set; }
        /// <summary>Stable URL slug (e.g. "abgabetiere") — the human key.</summary>
        public required string Slug { get; set; }
        public required string Title { get; set; }
        public string? SeoDescription { get; set; }
        public PageStatus Status { get; set; } = PageStatus.Draft;

        public ICollection<Block> Blocks { get; } = new List<Block>();
    }

    /// <summary>
    /// A content block on a page (single table, discriminated by <see cref="Type"/>).
    /// Type-specific payload lives in <see cref="Data"/> as JSON (RichText = Markdown).
    /// </summary>
    public class Block
    {
        [Key]
        public Guid Id { get; set; }
        public Guid PageId { get; set; }
        /// <summary>Explicit ordering within the page (AI tools reorder by this).</summary>
        public int Order { get; set; }
        public BlockType Type { get; set; }
        /// <summary>Type-specific fields as a JSON object string.</summary>
        public string Data { get; set; } = "{}";
    }

    /// <summary>A media asset referenced by Image/Gallery blocks.</summary>
    public class Media
    {
        [Key]
        public Guid Id { get; set; }
        public required string FileName { get; set; }
        public required string Url { get; set; }
        public string? Alt { get; set; }
        public int? Width { get; set; }
        public int? Height { get; set; }
    }
}