using FluentValidation;
using Raven.Client.Documents;
using Raven.Client.Documents.Linq;
using System.Globalization;

namespace zero.Collections;

public class LanguagesCollection : EntityCollection<Language>, ILanguagesCollection
{
  public LanguagesCollection(ICollectionContext context) : base(context) { }


  /// <inheritdoc />
  public List<Culture> GetAllCultures(params string[] codes)
  {
    return CultureInfo.GetCultures(CultureTypes.AllCultures)
      .Where(x => !x.Name.IsNullOrWhiteSpace())
      .Select(x => new CultureInfo(x.Name))
      .Where(x => codes.Length > 0 ? codes.Contains(x.Name, StringComparer.InvariantCultureIgnoreCase) : true)
      .OrderBy(x => x.DisplayName)
      .Select(x => new Culture()
      {
        Code = x.Name,
        Name = x.DisplayName
      })
      .ToList();
  }


  /// <inheritdoc />
  protected override void ValidationRules(ZeroValidator<Language> validator)
  {
    validator.RuleFor(x => x.Name).Length(2, 60);
    validator.RuleFor(x => x.Code).Length(2, 10).Culture();
    validator.RuleFor(x => x.IsDefault).Unique(Context.Store).When(x => x.IsDefault).WithMessage("@language.errors.default_unique");
    validator.RuleFor(x => x.IsDefault).ExpectAnyUnique(Context.Store, expectedValue: true).When(x => !x.IsDefault).WithMessage("@language.errors.needs_default");
    validator.RuleFor(x => x.InheritedLanguageId).Must((entity, value) => !entity.Id.Equals(value, StringComparison.InvariantCultureIgnoreCase)).When(x => !x.Id.IsNullOrEmpty()).WithMessage("@language.errors.fallback_invalid");
    validator.RuleFor(x => x.InheritedLanguageId).Equal((string)null).When(x => x.IsDefault).WithMessage("@language.errors.default_no_fallback");
    validator.RuleFor(x => x.InheritedLanguageId).Exists(Context.Store);
    validator.RuleFor(x => x.IsOptional).Equal(false).When(x => x.IsDefault).WithMessage("@language.errors.default_not_optional");
  }
}


public interface ILanguagesCollection : IEntityCollection<Language>
{
  /// <summary>
  /// Get all available cultures
  /// </summary>
  List<Culture> GetAllCultures(params string[] codes);
}