using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Hncore.Infrastructure.Common
{
    public class UrlHelper
    {
        #region 设置url参数

        /// <summary>
        /// 设置url参数
        /// </summary>
        /// <param name="paramName"></param>
        /// <param name="paramValue"></param>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string SetUrlParam(string url, string paramName, string paramValue)
        {
            paramName = paramName.ToLower();

            string currentUrl = url;

            if (!string.IsNullOrEmpty(paramValue))
            {
                paramValue = HttpUtility.UrlEncode(paramValue);
            }

            if (!currentUrl.Contains("?"))
            {
                return currentUrl += "?" + paramName + "=" + paramValue;
            }

            List<string> paramItems = currentUrl.Split('?')[1].Split('&').ToList();

            string paramItem = paramItems.SingleOrDefault(t => t.ToLower().Split('=')[0] == paramName);

            if (!string.IsNullOrEmpty(paramItem))
            {
                return currentUrl.Replace(paramItem, paramName + "=" + paramValue);
            }
            else
            {
                if (currentUrl.Contains("?"))
                {
                    currentUrl += "&";
                }
                else
                {
                    currentUrl += "?";
                }
                return currentUrl + paramName + "=" + paramValue;
            }
        }

        public static string SetUrlParam(string url, object paramObj)
        {
            var type = paramObj.GetType();
            var properties = type.GetProperties();

            foreach (var property in properties)
            {
                string name = property.Name;

                object valueObj = property.GetValue(paramObj, null);

                if (valueObj == null)
                {
                    continue;
                }

                string value = valueObj.ToString();

                url = SetUrlParam(url, name, value);
            }

            return url;
        }


        public static string ToUrlParam(IDictionary<string, string> kvs)
        {
            return string.Join("&", kvs.Select(m => $"{m.Key}={m.Value}"));
        }

        #endregion
    }
}