using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace SmsSendTool
{
   public class MobileUtils
    {
        /// <summary>
        /// 号段
        /// </summary>
        /// <returns></returns>
        public static string MobileNo(string mobile)
        {
            if (mobile.Length < 4)
            {
                return "";
            }

            string haoduan = mobile.Substring(0, 3);
            switch (haoduan)
            {
                case "134": return "yd";
                case "135": return "yd";
                case "136": return "yd";
                case "137": return "yd";
                case "138": return "yd";
                case "139": return "yd";
                case "147": return "yd";
                case "148": return "yd";
                case "150": return "yd";
                case "151": return "yd";
                case "152": return "yd";
                case "157": return "yd";
                case "158": return "yd";
                case "159": return "yd";
                case "182": return "yd";
                case "183": return "yd";
                case "184": return "yd";
                case "187": return "yd";
                case "188": return "yd";
                case "178": return "yd";
                case "172": return "yd";
                case "198": return "yd";
                case "130": return "lt";
                case "131": return "lt";
                case "132": return "lt";
                case "155": return "lt";
                case "156": return "lt";
                case "166": return "lt";
                case "185": return "lt";
                case "186": return "lt";
                case "145": return "lt";
                case "146": return "lt";
                case "171": return "lt";
                case "176": return "lt";
                case "175": return "lt";
                case "133": return "dx";
                case "153": return "dx";
                case "180": return "dx";
                case "181": return "dx";
                case "189": return "dx";
                case "177": return "dx";
                case "173": return "dx";
                case "174": return "dx";
                case "149": return "dx";
                case "191": return "dx";
                case "199": return "dx";
                case "170": return Get170(mobile);
                default: return "yd";
            }
        }

        /// <summary>
        /// 170号段
        /// </summary>
        /// <returns></returns>
        private static string Get170(string phone)
        {
            string haoduan = phone.Substring(0, 4);
            switch (haoduan)
            {
                case "1703": return "yd";
                case "1705": return "yd";
                case "1706": return "yd";
                case "1704": return "lt";
                case "1707": return "lt";
                case "1708": return "lt";
                case "1709": return "lt";
                case "1700": return "dx";
                case "1701": return "dx";
                case "1702": return "dx";
                default: return "yd";
            }
        }


        #region 判断是否是正确的手机号码格式
        /// <summary>
        /// 判断是否是正确的手机号码格式
        /// </summary>
        /// <param name="txtPhone">手机号码</param>
        /// <returns></returns>
        public static bool IsPhone(string txtPhone)
        {
            string s = @"^(1(([34579689][0-9])|(47)|[8][01236789]))\d{8}$";
            return Regex.IsMatch(txtPhone, s);
        }
        #endregion
    }
}