using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Processing;

namespace back.ApiService.models;

public class PhotoBuilder 
{
    public static Photo Build(string? title, string? description, List<string>? tags, List<string>? personsIn, IFormFile image)
    {
        // Genera un nombre de archivo único
        var fileName = $"{Guid.NewGuid()}{Path.GetExtension(image.FileName)}";
        var photo = new Photo(title, description, tags, personsIn, fileName);

        // Asegura que los directorios existen
        Directory.CreateDirectory(Photo.LowResFolder);
        Directory.CreateDirectory(Photo.MidResFolder);
        Directory.CreateDirectory(Photo.HighResFolder);

        // Procesa y guarda las imágenes
        using var stream = image.OpenReadStream();
        using var img = Image.Load(stream);
        // Baja resolución (480px)
        img.Mutate(x => x.Resize(new ResizeOptions { Size = new Size(480, 0), Mode = ResizeMode.Max }));
        img.Save(photo.LowResUrl);

        // Media resolución (720px)
        img.Mutate(x => x.Resize(new ResizeOptions { Size = new Size(720, 0), Mode = ResizeMode.Max }));
        img.Save(photo.MidResUrl);

        // Original
        stream.Position = 0;
        using var original = Image.Load(stream);
        original.Save(photo.HighResUrl);

        return photo;
    }
}

[Table("Photo")]
public class Photo
{
    public const string LowResFolder = "imgs/low";
    public const string MidResFolder = "imgs/mid";
    public const string HighResFolder = "imgs/high";

    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid Id { get; set; }
    public string? Title { get; set; }
    public string? Description { get; set; }
    public string? Ubicación { get; set; }
    public string? Evento { get; set; }
    public List<string>? Tags { get; set; }
    public List<string>? PersonsIn { get; set; }
    public string? FileName { get; set; }
    public string LowResUrl { get => Path.Join(LowResFolder, FileName); }
    public string MidResUrl { get => Path.Join(MidResFolder, FileName); }
    public string HighResUrl { get => Path.Join(HighResFolder, FileName); }
    public float? Ranking { get; set; }
    public DateTime? CreatedAt { get; set; }
    public DateTime? UpdatedAt { get; set; }
    public string? CreatedBy { get; set; }
    public string? UpdatedBy { get; set; }

    private Photo()
    {
        //Id = Guid.NewGuid();
        Tags = [];
        PersonsIn = [];
        CreatedAt = DateTime.Now;
        UpdatedAt = DateTime.Now;
        CreatedBy = "system";
        UpdatedBy = "system";
        Ranking = 0.0f;
    }

    public Photo(string? title, string? description, List<string>? tags, List<string>? personsIn, string? fileName)
        : this()
    {
        if (string.IsNullOrWhiteSpace(fileName))
        {
            throw new ArgumentException("FileName cannot be null or empty.", nameof(fileName));
        }
        Title = title;
        Description = description;
        Tags = tags ?? [];
        PersonsIn = personsIn ?? [];
        FileName = fileName;
    }
}