using System.Collections;
using System.Collections.Generic;
using System.Linq;
using xCommons.Extensions;
using xModels.Dtos;
using xStringService.Models.Dtos;
using xStringService.Models.Entities;

namespace xStringService.Extensions
{
    public static class XModelExtensions
    {
        /// <summary>
        /// Converts an Entity to Dto Representation ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static XStringDto ToXStringDto(this XString source)
        {
            //
            XStringDto result = new XStringDto();

            //
            result.Id = source.Id;
            result.Language = source.Language;
            result.ResourceTitle = source.ResourceTitle;
            result.TranslatedValue = source.TranslatedValue;

            //
            return result;
        }

        /// <summary>
        /// Converts a Collection of Entities to Dto ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static IEnumerable<XStringDto> ToXStringDtos(this IEnumerable<XString> source)
        {
            //
            var list = new List<XStringDto>();

            //
            // Validate ...
            bool isValid = source.HasChild();
            if (!isValid)
            {
                return list.AsEnumerable();
            }

            //
            var result = source.Select(e => ToXStringDto(e));

            //
            return result;
        }

        /// <summary>
        /// Converts an Entity to LocaleResource Dto ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static XLocaleResourceDto ToXLocaleResourceDto(this XString source)
        {
            //
            var result = new XLocaleResourceDto
            {
                Language = source.IsNull() ? "" : source.Language,
                Value = source.IsNull() ? "" : source.TranslatedValue,
            };

            //
            return result;
        }

        /// <summary>
        /// Converts an Dto to LocaleResource Dto ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static XLocaleResourceDto ToXLocaleResourceDto(this XStringDto source)
        {
            //
            var result = new XLocaleResourceDto
            {
                Language = source.IsNull() ? "" : source.Language,
                Value = source.IsNull() ? "" : source.TranslatedValue,
            };

            //
            return result;
        }

        /// <summary>
        /// Converts a Collection of Entities to Locale Resource Presentation ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static IEnumerable<XLocaleResourceDto> ToXLocaleResourceDtos(this IEnumerable<XString> source)
        {
            //
            var result = source.Select(e => ToXLocaleResourceDto(e));
            return result;
        }

        /// <summary>
        /// Converts a Collection of Dtos to Locale Resource Presentation ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static IEnumerable<XLocaleResourceDto> ToXLocaleResourceDtos(this IEnumerable<XStringDto> source)
        {
            //
            var result = source.Select(e => ToXLocaleResourceDto(e));
            return result;
        }
    }
}