package controllers

import (
	"encoding/base64"
	"encoding/json"
	"io/ioutil"
	"net/http"
	"wechat-conf/models"
	"wechat-conf/models/model"
	"wechat-conf/service/autoreply"
	"wechat-conf/service/wechat"
	"wechat-conf/utils"

	"github.com/kinisky564477/wechat/component"

	"github.com/zjxpcyc/wechat/core"
)

// WechatController 用户
type WechatController struct {
	BaseController
	serv       *autoreply.AutoreplyServ
	wechatServ *wechat.WechatServ
}

// Constructor 初始化 Controller
// @Title Constructor
// @Description 初始化 Controller, 系统自动调用
func (c *WechatController) Constructor() {
	c.serv = autoreply.NewAutoreplyServ(c.Context)
	c.wechatServ = wechat.NewWechatServ(c.Context)
}

const (
	INFOTYPE_TICKET           = "component_verify_ticket"
	INFOTYPE_AUTHORIZED       = "authorized"
	INFOTYPE_UNAUTHORIZED     = "unauthorized"
	INFOTYPE_UPDATEAUTHORIZED = "updateauthorized"
)

// ComponentPush 第三方平台推送
func (c *WechatController) ComponentPush() {
	r := c.Ctx.Request
	defer r.Body.Close()
	con, _ := ioutil.ReadAll(r.Body)
	conf, err := c.wechatServ.GetComponentInfo()
	if err != nil || conf == nil || conf.Appid == "" {
		utils.LogError("读取微信配置文件失败")
		c.ResponseRaw([]byte(""))
	}
	EncodingAESKey := conf.Aeskey

	AESKey, err := base64.StdEncoding.DecodeString(EncodingAESKey + "=")
	if err != nil {
		utils.LogError("DecodeString失败：", err)
		c.ResponseRaw([]byte(""))
	}
	xp := &core.XMLParse{}
	// 解析xml
	val, err := xp.Parse(string(con))
	if err != nil {
		utils.LogError("xml解析失败：", err)
		c.ResponseRaw([]byte(""))
	}

	msgbyte, err := utils.AesDecrypt([]byte(val["Encrypt"]), AESKey)
	if err != nil {
		utils.LogError("解密失败：", err)
		c.ResponseRaw([]byte(""))
	}
	msg, err := xp.Parse(string(msgbyte))
	if err != nil {
		utils.LogError("msgxml解析失败：", err)
		c.ResponseRaw([]byte(""))
	}
	utils.LogError("接收微信推送消息：", msg)
	switch msg["InfoType"] {
	case INFOTYPE_TICKET:
		// 更新ticket
		conf.Ticket = msg["ComponentVerifyTicket"]
		err := c.wechatServ.UpdateComponentTicket(conf)
		if err != nil {
			utils.LogError("修改ticket失败：", err)
		}
		utils.RefreshComponentTicket(msg["ComponentVerifyTicket"])
		break
	case INFOTYPE_AUTHORIZED:
		// 授权成功
		var cert = map[string]string{
			"appid":              msg["AuthorizerAppid"],
			"authorization_code": msg["AuthorizationCode"],
		}
		wxclient := utils.WechatInit(cert, c.wechatServ.UpdateToken)
		utils.AppendWxClient(wxclient)
		// 插入数据库
		mjson, _ := json.Marshal(msg)
		var conf = model.SysWechatConf{
			Appid:             msg["AuthorizerAppid"],
			AuthorizationCode: msg["AuthorizationCode"],
			AuthorizationInfo: string(mjson),
		}
		err := c.wechatServ.SaveWechatConf(conf)
		if err != nil {
			utils.LogError("保存微信授权信息失败：", err)
			c.ResponseRaw([]byte(""))
		}
		c.ResponseRaw([]byte("success"))
		break
	case INFOTYPE_UPDATEAUTHORIZED:
		// 授权更新
		break
	case INFOTYPE_UNAUTHORIZED:
		// 取消授权
		break
	}
}

// WechatInfo 微信接入
func (c *WechatController) WechatInfo() {
	method := c.Ctx.Input.Method()
	if method == http.MethodGet {
		echostr := c.GetString("echostr")
		c.ResponseRaw([]byte(echostr))
	} else {
		c.WxReceive()
	}
}

// WxReceive 微信消息接收
func (c *WechatController) WxReceive() {
	appid := c.GetString(":appid")
	wechat, err := utils.Component.GetWxClient(appid)
	if err != nil {
		utils.LogError("获取微信失败: " + err.Error())
	}
	val, err := wechat.TransformMessage(string(c.Ctx.Input.RequestBody))
	if err != nil {
		utils.LogError("读取微信服务发送内容失败: " + err.Error())
		c.ResponseRaw([]byte(""))
	}

	var replay = new(model.TaAutoReply)
	switch val["MsgType"] {
	case "text":
		content := val["Content"]
		// 获取数据库存储返回类型
		replay, err = c.serv.GetAutoReplayByAppID(appid, content)
		break
	case "event":
		if val["Event"] == "subscribe" {
			replay, err = c.serv.GetSubscribeByAppID(appid)
		}
		break
	}
	if err != nil {
		utils.LogError("获取微信自动回复信息失败: " + err.Error())
		c.ResponseRaw([]byte(""))
	}

	if replay == nil {
		c.ResponseRaw([]byte(""))
	}
	openID := val["FromUserName"]
	message, err := c.getReplayMessage(replay, openID, wechat)
	if err != nil {
		utils.LogError("转换回复信息失败: " + err.Error())
		c.ResponseRaw([]byte(""))
	}
	c.ResponseRaw(message, false)
	c.DestroyContext()
	c.StopRun()
}

func (c *WechatController) getReplayMessage(replay *model.TaAutoReply, openid string, wx *component.WxClient) ([]byte, error) {
	switch replay.MessageType {
	case models.MESSAGE_TYPE_CONTENT:
		msg, err := wx.ResponseMessageText(openid, replay.MessageParagraph)
		return msg, err
	case models.MESSAGE_TYPE_IMG:
		msg, err := wx.ResponseMessageImage(openid, replay.MessageImg)
		return msg, err
		// case models.MESSAGE_TYPE_PARAGRAPH:
		// 	msg, err := wx.ResponseMessageNews(openid, replay.MessageImg)
		// 	return msg, err
	}
	return nil, nil
}

// GetPreAuthCode 获取预授权码
func (c *WechatController) GetPreAuthCode() {
	utils.LogError(utils.Component.GetToken())
	code, err := utils.Component.GetPreAuthCode()
	if err != nil {
		utils.LogError("获取预授权码错误: " + err.Error())
		c.ResponseError(err)
	}
	c.ResponseJSON(code)
}