using System;
using System.Configuration;
using System.Web;
using System.Collections.Generic;

namespace BatchService.Framework.Utility
{
	/// <summary>
    /// Fetch 的摘要说明。
	/// </summary>
	public class Fetch
	{
		/// <summary>
		/// 获取Url后面的值
		/// </summary>
		/// <param name="name"></param>
		/// <returns></returns>
        public static string Get(string name)
		{
			string text1 = HttpContext.Current.Request.QueryString[name];
			return ((text1 == null) ? "" : text1.Trim());
		}

		/// <summary>
		/// 获取表单Post过来的值
		/// </summary>
		/// <param name="name"></param>
		/// <returns></returns>
        public static string Post(string name)
		{
			string text1 = HttpContext.Current.Request.Form[name];
			return ((text1 == null) ? "" : text1.Trim());
		}

        /// <summary>
        /// 获取Url后面的值，如.....aspx?productid=2将获取到"2"
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static int GetQueryId(string name)
        {
            int id = 0;
            int.TryParse(Get(name), out id);
            return id;
        }

        /// <summary>
        /// 获取表单Post过来的值，如表单checkboxlist传ids:2,3,5过来，将是int[]{2,3,4}
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static int[] GetIds(string name) 
        {
            var ids = Post(name);
            List<int> result = new List<int>();
            int id = 0;
            var array = ids.Split(',');
            foreach (var a in array)
                if (int.TryParse(a.Trim(), out id))
                    result.Add(id);

            return result.ToArray();
        }

        /// <summary>
        /// 获取Url过来的值，如.....aspx?productid=2&productid=3，将是int[]{2,3}
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public static int[] GetQueryIds(string name)
        {
            var ids = Get(name);
            List<int> result = new List<int>();
            int id = 0;
            var array = ids.Split(',');
            foreach (var a in array)
                if (int.TryParse(a.Trim(), out id))
                    result.Add(id);

            return result.ToArray();
        }

        /// <summary>
        /// 获取当前页面的Url
        /// </summary>
        public static string CurrentUrl
		{
			get
			{
				return HttpContext.Current.Request.Url.ToString();
			}
		}

        /// <summary>
        /// 获取当前页面的主域，如www.GMS.com主域是GMS.com
        /// </summary>
        public static string ServerDomain
        {
            get
            {
                string urlHost = HttpContext.Current.Request.Url.Host.ToLower();
                string[] urlHostArray = urlHost.Split(new char[] { '.' });
                if ((urlHostArray.Length < 3) || RegExp.IsIp(urlHost))
                {
                    return urlHost;
                }
                string urlHost2 = urlHost.Remove(0, urlHost.IndexOf(".") + 1);
                if ((urlHost2.StartsWith("com.") || urlHost2.StartsWith("net.")) || (urlHost2.StartsWith("org.") || urlHost2.StartsWith("gov.")))
                {
                    return urlHost;
                }
                return urlHost2;
            }
        }

        /// <summary>
        /// 获取访问用户的IP
        /// </summary>
        public static string UserIp
        {
            get
            {
                string result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
                switch (result)
                {
                    case null:
                    case "":
                        result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
                        break;
                }
                if (!RegExp.IsIp(result))
                {
                    return "Unknown";
                }
                return result;
            }
        }

	}
}