package im

import (
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"log"
	"net"
	"net/http"
	"sync"
	"time"

	"git.rosy.net.cn/baseapi/utils"

	"git.rosy.net.cn/baseapi/platformapi/mtwmapi"
	"git.rosy.net.cn/jx-callback/globals/api"
	"github.com/gazeboxu/mapstructure"
	"github.com/gorilla/websocket"
	"gopkg.in/ini.v1"
)

// ClientManager 连接管理
type ClientManager struct {
	ClientIdMap     map[string]*Client // 全部的连接
	ClientIdMapLock sync.RWMutex       // 读写锁

	Connect    chan *Client // 连接处理
	DisConnect chan *Client // 断开连接处理

	GroupLock sync.RWMutex
	Groups    map[string][]string

	SystemClientsLock sync.RWMutex
	SystemClients     map[string][]string
}

// Client 客户端连接信息
type Client struct {
	ClientId    string          // 标识ID
	Socket      *websocket.Conn // 用户连接
	ConnectTime uint64          // 首次连接时间
	IsDeleted   bool            // 是否删除或下线
	UserId      string          // 业务端标识用户ID
	//Extend      string          // 扩展字段，用户可以自定义
	//GroupList   []string
}

//channel通道结构体
type clientInfo struct {
	ClientId   string `json:"clientId" validate:"required"` //链接ID
	Data       interface{}
	SendUserId string
	MessageId  string
	Code       int
	Msg        string
}

// RetData 统一返回值结构体
type RetData struct {
	Code int         `json:"code"` //响应code
	Msg  string      `json:"msg"`  //响应msg success/fail
	Data interface{} `json:"data"` //信息

	//MessageType string      `json:"messageType"` //消息类型 heart-心跳检测；send-发送消息；receive-接收消息
	//MessageId   string      `json:"messageId"`   //发送/接收信息 id
	//UserId      string      `json:"userId"`      //必须是平台方userID
}

type global struct {
	LocalHost      string //本机内网IP
	ServerList     map[string]string
	ServerListLock sync.RWMutex
}
type commonConf struct {
	HttpPort  string
	RPCPort   string
	Cluster   bool
	CryptoKey string
}

// SendData 客户端写入参数
type SendData struct {
	//ClientId string      `json:"clientId" validate:"required"` //链接ID
	VendorID int         `json:"vendorID"` //消息来源平台ID
	Data     interface{} `json:"data"`     //发送给平台 美团/饿了么消息结构体
	//返回值
	//Code int    `json:"code"`
	//Msg  string `json:"msg"`
	//SendUserId string `json:"sendUserId"`
}

// JXMsg 京西消息结构体
type JXMsg struct {
	SendType string      `json:"sendType"` //消息发送方 jx-商家；mt-美团；elm-饿了么
	Data     interface{} `json:"data"`     //美团/饿了么 单聊消息
}

// GetUserListReq 获取门店用户聊天列表
type GetUserListReq struct {
	VendorStoreID string `json:"vendorStoreID"` //平台门店id
	VendorID      string `json:"vendorID"`      //平台标识id
	AppID         string `json:"appID"`         //应用ID
}

type GetChatDetailReq struct {
	VendorStoreID string `json:"vendorStoreID"` //平台门店id
	VendorID      string `json:"vendorID"`      //平台标识id
	AppID         string `json:"appID"`         //应用ID
	UserID        string `json:"userID"`        //userID/groupID
}

// UserMessageList 用户消息列表
type UserMessageList struct {
	VendorID      int    `json:"vendorID"`      //平台品牌 10-美团 11-饿了么
	UserID        string `json:"userID"`        //用户ID
	NewMessageNum int    `json:"NewMessageNum"` //新消息数量
	LatestMsg     string `json:"latestMsg"`     //最新一条消息
	LatestTime    int    `json:"latestTime"`    //最新一条消息发送时间
}

type RelInfo struct {
	VendorStoreID string `json:"vendorStoreID"` //平台门店id
	VendorID      string `json:"vendorID"`      //平台标识id
	AppID         string `json:"appID"`         //应用ID
}

type UserRelInfo struct {
	VendorStoreID string `json:"vendorStoreID"` //平台门店id
	VendorID      string `json:"vendorID"`      //平台标识id
	AppID         string `json:"appID"`         //应用ID
	UserID        string `json:"userID"`        //用户id/groupID
}

var (
	cfg               *ini.File
	rdb               = api.Cacher
	Manager           = NewClientManager() // 管理者
	CommonSetting     = &commonConf{}
	GlobalSetting     = &global{}
	ToClientChan      chan clientInfo
	heartbeatInterval = 60 * time.Second                    // 心跳间隔
	HeartCheckMsg     = "~#HHHBBB#~"                        //心跳检测消息
	HeartCheckSuccess = "HB"                                //成功发送返回心跳消息
	VendorIDMT        = 10                                  //im美团
	VendorIDELM       = 11                                  //im饿了么
	SendTypeJx        = "jx"                                //京西客户端发送方标识
	SendTypeMt        = "mt"                                //美团用户发送方标识符
	SendTypeElm       = "elm"                               //饿了么用户发送方标识符
	MTIMPushUrl       = "wss://wpush.meituan.com/websocket" //buildPushConnect建立长连接
)

const (
	ExpireTimeDay  = 24 * time.Hour //redis一天过期时间
	maxMessageSize = 8192           // 最大的消息大小
)

type renderData struct {
	ClientId string `json:"clientId"`
}

const (
	SuccessCode = 0
	SuccessMsg  = "success"
	Fail        = -1
	FailMsg     = "fail"

	SYSTEM_ID_ERROR      = -1001
	ONLINE_MESSAGE_CODE  = 1001
	OFFLINE_MESSAGE_CODE = 1002
)

// Render 统一返回值
func Render(conn *websocket.Conn, messageId string, code int, message string, data interface{}) error {
	return conn.WriteJSON(RetData{
		Code: code,
		Msg:  message,
		Data: data,
	})
}

func ClientRender(w http.ResponseWriter, code int, msg string, data interface{}) (str string) {
	var retData RetData

	retData.Code = code
	retData.Msg = msg
	retData.Data = data

	retJson, _ := json.Marshal(retData)
	str = string(retJson)

	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	_, _ = io.WriteString(w, str)
	return
}

func ConnRender(conn *websocket.Conn, data interface{}) (err error) {
	err = conn.WriteJSON(RetData{
		Code: SuccessCode,
		Msg:  "success",
		Data: data,
	})
	return
}

// Default 给默认值
func Default() {
	CommonSetting = &commonConf{
		HttpPort:  "6000",
		RPCPort:   "7000",
		Cluster:   false,
		CryptoKey: "Adba723b7fe06819",
	}

	GlobalSetting = &global{
		LocalHost:  getIntranetIp(),
		ServerList: make(map[string]string),
	}
}

// Setup 初始化全局设置变量
func Setup() {
	configFile := flag.String("c", "conf/app.ini", "-c conf/app.ini")

	var err error
	cfg, err = ini.Load(*configFile)
	if err != nil {
		log.Fatalf("setting.Setup, fail to parse 'conf/app.ini': %v", err)
	}

	mapTo("common", CommonSetting)

	GlobalSetting = &global{
		LocalHost:  getIntranetIp(),
		ServerList: make(map[string]string),
	}
	fmt.Printf("LocalHost=%s\n ServerList=%s\n", GlobalSetting.LocalHost, utils.Format4Output(GlobalSetting.ServerList, false))
}

// mapTo map section
func mapTo(section string, v interface{}) {
	err := cfg.Section(section).MapTo(v)
	if err != nil {
		log.Fatalf("Cfg.MapTo %s err: %v", section, err)
	}
}

//获取本机IP
func getIntranetIp() string {
	addrs, _ := net.InterfaceAddrs()
	for _, addr := range addrs {
		// 检查ip地址判断是否回环地址
		if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
			if ipnet.IP.To4() != nil {
				return ipnet.IP.String()
			}

		}
	}
	return ""
}

// GenFullUrl 组装完整websocket url以及生成clientID
func GenFullUrl() (fullUrl string) {
	resp, err := api.MtwmAPI.GetConnectionToken()
	if err != nil {
		return ""
	}
	retVal := mtwmapi.GetConnTokenResp{}
	err = mapstructure.Decode(resp, &retVal)
	fullUrl = MTIMPushUrl + "/" + retVal.AppKey + "/" + retVal.ConnectionToken
	//clientID = api.MtwmAPI.GetAppID() + ":" + retVal.ConnectionToken
	//打印输出
	//fmt.Printf("Create websocket connect failCount:%d", retVal.UserCount)
	return fullUrl
}