using System.ComponentModel.DataAnnotations;

using DomainObjects.Documents;
using Core.Enumerations;
using Extensions;
using WeatherForecast.Models.Abstractions.PostItem.Requests;

namespace WeatherForecast.Models.Requests {

  /// <summary>
  /// 
  /// </summary>
  public class ShopItemRequestModel : PostItemRequestModelBase<ShopDocument> {

    /// <summary>
    /// 
    /// </summary>
    public string? BrandName { get; set; }

    /// <summary>
    /// 
    /// </summary>
    public decimal? Rating { get; set; }

    /// <summary>
    /// 
    /// </summary>
    public decimal? Price { get; set; }

    /// <summary>
    /// 
    /// </summary>
    public decimal? NewPrice { get; set; }

    /// <summary>
    /// 
    /// </summary>
    public uint? Quantity { get; set; }

    /// <summary>
    /// 
    /// </summary>
    /// <returns></returns>
    public override ShopDocument ToDomainObject() {

      return new ShopDocument() {
        L10n = L10n.Select(x => x.ToDomainObject()).ToList(),
        MediaAttachments = MediaAttachments?.Select(x => x.ToDomainObject()).ToList(),
        // Author
        Created = DateTime.UtcNow,
        Tags = Tags,
        FamilyFriendly = FamilyFriendly,

        BrandName = BrandName,
        Rating = Rating,
        Price = Price.Value,
        NewPrice = NewPrice,
        Quantity = Quantity.Value
      };
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="validationContext"></param>
    /// <returns></returns>
    public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext) {
      if (L10n.IsNullOrEmpty())
        yield return new ValidationResult($"{nameof(L10n)} {Errors.NullOrEmpty}");

      if (MediaAttachments.IsNullOrEmpty())
        yield return new ValidationResult($"{nameof(MediaAttachments)} {Errors.NullOrEmpty}");

      if (string.IsNullOrWhiteSpace(BrandName))
        yield return new ValidationResult($"{nameof(BrandName)} {Errors.NullOrWhiteSpace}");

      if (Price == null || (Price != null && Price == 0))
        yield return new ValidationResult($"{nameof(Price)} {Errors.NullOrEmpty.Name}");

      if (Quantity == null || (Quantity != null && Quantity == 0))
        yield return new ValidationResult($"{nameof(Quantity)} {Errors.NullOrEmpty}");
    }
  }
}