using Senparc.CO2NET.Utilities;
using Senparc.Weixin.Exceptions;
using System.IO;

namespace Znyc.Cloudcar.Admin.WeChat.CommonService.OpenTicket
{
    /// <summary>
    ///     OpenTicket即ComponentVerifyTicket
    /// </summary>
    public class OpenTicketHelper
    {
        public static string GetOpenTicket(string componentAppId)
        {
            //实际开发过程不一定要用文件记录，也可以用数据库。
            string openTicketPath = ServerUtility.ContentRootMapPath("~/App_Data/OpenTicket");
            string openTicket = null;
            string filePath = Path.Combine(openTicketPath, string.Format("{0}.txt", componentAppId));
            if (File.Exists(filePath))
            {
                using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
                {
                    using (TextReader tr = new StreamReader(fs))
                    {
                        openTicket = tr.ReadToEnd();
                    }
                }
            }
            else
            {
                throw new WeixinException("OpenTicket不存在！");
            }

            //其他逻辑

            return openTicket;
        }
    }
}