using System;
using System.Collections.Generic;
using System.Collections.Generic;
using System.ComponentModel;
using System.Reflection;
using System.Threading.Tasks;

namespace CMS.Plugin.HIAWms.Domain.Shared.Util
{
    /// <summary>
    /// 导出帮助类.
    /// </summary>
    public static class ExportHelper
    {
        // 通用转换方法（兼容 Func<T, Dictionary<string, object>>）
        public static Dictionary<string, object> ConvertToExportData<T>(T entity)
        {
            var dict = new Dictionary<string, object>();
            if (entity == null) return dict;

            foreach (var prop in typeof(T).GetProperties())
            {
                var value = prop.GetValue(entity);
                dict[prop.Name] = FormatValue(value);
            }
            return dict;
        }

        // 批量转换方法
        public static List<Dictionary<string, object>> ConvertListToExportData<T>(IEnumerable<T> list)
        {
            return list.Select(ConvertToExportData).ToList();
        }

        private static object FormatValue(object value)
        {
            if (value == null) return string.Empty;

            // 处理枚举
            if (value is Enum enumValue)
                return GetEnumDescriptionUtil.GetEnumDescription(enumValue);

            // 处理布尔
            if (value is bool boolValue)
                return boolValue ? "是" : "否";

            return value;
        }

        private static string GetEnumDescription(Enum value)
        {
            var fieldInfo = value.GetType().GetField(value.ToString());
            var description = fieldInfo?
                .GetCustomAttributes(typeof(DescriptionAttribute), false)
                .FirstOrDefault() as DescriptionAttribute;
            return description?.Description ?? value.ToString();
        }
    }
}