using Hncore.Infrastructure.Common;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.IO;
using System.Xml;
using System.Xml.Linq;

namespace Hncore.Wx.Open
{
    /// <summary>
    /// RequestMessage工厂
    /// </summary>
    public static class MessageFactory
    {

        public static IServiceCollection Service { get; set; }
        /// <summary>
        /// 获取XDocument转换后的IRequestMessageBase实例。
        /// 如果MsgType不存在，抛出UnknownRequestMsgTypeException异常
        /// </summary>
        /// <returns></returns>
        public static IMessageBase GetRequestEntity(XDocument doc)
        {
            IMessageBase requestMessage = null;
            RequestInfoType infoType;

            try
            {
                infoType = InfoTypeHelper.GetRequestInfoType(doc);
                switch (infoType)
                {
                    case RequestInfoType.component_verify_ticket:
                        requestMessage = new MessageComponentVerifyTicket(doc);
                        break;
                    case RequestInfoType.unauthorized:
                        requestMessage = new MessageUnauthorized(doc);
                        break;
                    case RequestInfoType.authorized:
                        requestMessage = new MessageAuthorized(doc);
                        break;
                    case RequestInfoType.updateauthorized:
                        requestMessage = new MessageUpdateAuthorized(doc);
                        break;
                    case RequestInfoType.notify_third_fasteregister:
                        requestMessage = new MessageThirdFasteRegister(doc);
                        break;
                    case RequestInfoType.event_subscribe_qrscene:
                        requestMessage = new MessageEventSubscribeQrscene(doc);
                        break;
                    case RequestInfoType.event_SCAN:
                        requestMessage = new MessageEventScan(doc);
                        break;
                    case RequestInfoType.event_subscribe:
                        requestMessage = new MessageEventSubscribe(doc);
                        break;
                    default:
                        return new MessageDefault();
                }
            }
            catch (Exception ex)
            {
                LogHelper.Error("MessageFactory  解析失败", ex.Message);
            }
            return requestMessage;
        }


        /// <summary>
        /// 获取XDocument转换后的IRequestMessageBase实例。
        /// 如果MsgType不存在，抛出UnknownRequestMsgTypeException异常
        /// </summary>
        /// <returns></returns>
        public static IMessageBase GetRequestEntity(string xml)
        {
            return GetRequestEntity(XDocument.Parse(xml));
        }


        /// <summary>
        /// 获取XDocument转换后的IRequestMessageBase实例。
        /// 如果MsgType不存在，抛出UnknownRequestMsgTypeException异常
        /// </summary>
        /// <param name="stream">如Request.InputStream</param>
        /// <returns></returns>
        public static IMessageBase GetRequestEntity(Stream stream)
        {
            using (XmlReader xr = XmlReader.Create(stream))
            {
                var doc = XDocument.Load(xr);

                return GetRequestEntity(doc);
            }
        }
    }
}