using System.Collections.Generic;
using System.Linq;
using Vinno.vCloud.Report.Interfaces;
using Vinno.vCloud.Report.Models;

namespace ReportConverter
{
    class GenderTranslater
    {
        private readonly IEnumerable<string> _maleList = new List<string> { "男", "雄", "公", "雄性" };
        private readonly IEnumerable<string> _femaleList = new List<string> { "女", "雌", "母", "雌性" };
        private const string Female = "Female";
        private const string Male = "Male";

        /// <summary>
        /// translate gender
        /// </summary>
        /// <param name="reportInfo">report info entity</param>
        public void TranslateGender(ReportInfo reportInfo)
        {
            var genderElement = reportInfo.Template.Blocks.SelectMany(b => b.Elements)
                .FirstOrDefault(e => ElementTag.PatientGender.Equals(e.Tag));
            if (genderElement is SingleSelected singleSelected)
            {
                if (reportInfo.ElementValues.TryGetValue(ElementTag.PatientGender, out var genderValue))
                {
                    if (genderValue is TextElementValue textElementValue)
                    {
                        textElementValue.Value =
                            TranslateGenderValueToSelecteItem(textElementValue.Value, singleSelected.Items);
                    }
                }
            }
        }

        private string TranslateGenderValueToSelecteItem(string value, List<string> items)
        {
            if (value == Male)
            {
                var matchedValue = items.FirstOrDefault(i => _maleList.Contains(i));
                if (!string.IsNullOrEmpty(matchedValue))
                {
                    return matchedValue;
                }
            }
            else if (value == Female)
            {
                var matchedValue = items.FirstOrDefault(i => _femaleList.Contains(i));
                if (!string.IsNullOrEmpty(matchedValue))
                {
                    return matchedValue;
                }
            }
            return value;
        }
    }
}