package main

import (
	"encoding/base64"
	"encoding/json"
	"github.com/beevik/guid"
	"github.com/gorilla/websocket"
	"io/ioutil"
	"net/http"
	"strings"
)

type WebApiRequest struct {
	DeviceNo             string `json:"deviceNo"`
	Random               string `json:"random"`
	ClientNo             string `json:"clientNo"`
	UserName             string `json:"userName"`
	VerificationPassword string `json:"verificationPassword"`
}

type WebApiResponse struct {
	TraceId interface{} `json:"traceId"`
	Code    int         `json:"code"`
	Message string      `json:"message"`
	Data    interface{} `json:"data"`
	Success bool        `json:"success"`
	Error   bool        `json:"error"`
}
type WebCheckData struct {
	Pass bool `json:"pass"`
}
type DeviceVerificationTypeData struct {
	DeviceId         interface{} `json:"deviceId"`
	VerificationType interface{} `json:"verificationType"`
}

type IdTransferData struct {
	StreamingConfig StreamingConfig `json:"streamingConfig"`
	StreamRecordId  int             `json:"streamRecordId"` //记录分析,没啥用,未实现相关功能
}

type LoginRequest struct {
	Password string `json:"password"`
	Phone    string `json:"phone"`
}

type AppDeviceListData struct {
	DeviceId      int         `json:"deviceId"`
	DeviceNo      string      `json:"deviceNo"`
	DeviceName    string      `json:"deviceName"`
	ExpireTime    interface{} `json:"expireTime"`
	ExpireTimeStr interface{} `json:"expireTimeStr"`
	OnlineState   int         `json:"onlineState"`
	EnableConnect int         `json:"enableConnect"`
	ClientVersion interface{} `json:"clientVersion"`
}

type RegisterModel struct {
	Code      string `json:"code"`
	Password  string `json:"password"`
	Password2 string `json:"password2"`
	Phone     string `json:"phone"`
	UserName  string `json:"userName"`
}

func checkHandler(w http.ResponseWriter, r *http.Request) {
	data, _ := ioutil.ReadAll(r.Body)
	defer r.Body.Close()
	var model *WebApiRequest
	json.Unmarshal(data, &model)
	decodeString, _ := base64.StdEncoding.DecodeString(model.DeviceNo)
	model.DeviceNo = string(decodeString)
	result := fastLinkService.CheckWebLogin(model.DeviceNo, model.Random)
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data: &WebCheckData{
			Pass: true,
		},
		Success: true,
		Error:   false,
	}
	switch result {
	case 1:
		resp.Data = nil
		resp.Error = true
		resp.Success = false
		resp.Message = "远程主机没有分享"
		resp.Code = 500
	case 2:
		resp.Data = nil
		resp.Error = true
		resp.Success = false
		resp.Message = "要连接的主机不存在"
		resp.Code = 500
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func deviceVerificationTypeHandler(w http.ResponseWriter, r *http.Request) {
	data, _ := ioutil.ReadAll(r.Body)
	defer r.Body.Close()
	var model *WebApiRequest
	json.Unmarshal(data, &model)
	device := fastLinkService.GetDeviceByNo(model.DeviceNo)
	vData := &DeviceVerificationTypeData{
		DeviceId:         nil,
		VerificationType: nil,
	}
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    vData,
		Success: true,
		Error:   false,
	}
	if device != nil {
		vData.DeviceId = device.DeviceId
		vData.VerificationType = device.VerificationType
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func idTransferHandler(w http.ResponseWriter, r *http.Request) {
	data, _ := ioutil.ReadAll(r.Body)
	defer r.Body.Close()
	var model *WebApiRequest
	json.Unmarshal(data, &model)
	device := fastLinkService.GetDeviceByNo(model.DeviceNo)
	if device == nil {
		resp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "设备不存在",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(resp)
		w.Write(marshal)
	} else {
		if device.Online && device.Visible {
			if device.VerificationType == 2 && device.TwoStepPass != "" && device.TwoStepPass != model.VerificationPassword {
				resp := WebApiResponse{
					TraceId: nil,
					Code:    500,
					Message: "访问密码不正确",
					Data:    nil,
					Success: false,
					Error:   true,
				}
				marshal, _ := json.Marshal(resp)
				w.Write(marshal)
				return
			}

			streamToken := GenShortGUID()
			if model.UserName == "" {
				model.UserName = "WEB客户端"
			}
			fastLinkService.PrepareSignalSession(model.ClientNo, device.DeviceId, device.DeviceNo, streamToken, model.UserName)

			targetRemoteControlResp := &RemoteStartRemoteControlResponse{
				Id:     guid.New().String(),
				Method: "SetStreamingConfig",
				Params: RemoteStreamingConfig{
					ClientId:     model.ClientNo,
					SignalServer: globalConfig.SignalServer,
					StunAddrs:    globalConfig.StunServers,
					Token:        streamToken,
					TurnAddrs:    globalConfig.TurnServers,
				},
			}
			remoteSession := fastLinkService.GetSession(device.DeviceNo, CLIENT_TYPE_FASTLINK_SERVICE)
			remoteSession.WsConn.WriteMessage(websocket.TextMessage, makeMessageResponse(device.DeviceNo+"_service", targetRemoteControlResp))

			//推送UI提示
			notifyOnlineUserChange(device.DeviceNo)

			idTransferData := IdTransferData{
				StreamingConfig: StreamingConfig{
					ClientId:     model.ClientNo,
					ClientIds:    []string{model.ClientNo},
					ServiceId:    model.DeviceNo,
					SignalServer: globalConfig.SignalServer,
					StunAddrs:    globalConfig.StunServers,
					Token:        streamToken,
					TurnAddrs:    globalConfig.TurnServers,
				},
				StreamRecordId: 0,
			}
			resp := WebApiResponse{
				TraceId: nil,
				Code:    200,
				Message: "",
				Data:    idTransferData,
				Success: true,
				Error:   false,
			}
			marshal, _ := json.Marshal(resp)
			w.Write(marshal)
		} else {
			resp := WebApiResponse{
				TraceId: nil,
				Code:    500,
				Message: "远程主机不在线",
				Data:    nil,
				Success: false,
				Error:   true,
			}
			marshal, _ := json.Marshal(resp)
			w.Write(marshal)
		}
	}
}

func closeHandler(w http.ResponseWriter, r *http.Request) {
	//记录埋点用,未实现,直接返回
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    nil,
		Success: true,
		Error:   false,
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func loginForAppHandler(w http.ResponseWriter, r *http.Request) {
	data, _ := ioutil.ReadAll(r.Body)
	defer r.Body.Close()
	var model *LoginRequest
	json.Unmarshal(data, &model)
	success := fastLinkService.CheckUser(model.Phone, model.Password)
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    nil,
		Success: true,
		Error:   false,
	}
	if !success {
		resp.Success = false
		resp.Error = true
		resp.Code = 500
		resp.Message = "用户名或密码不正确！"
	}
	token := fastLinkService.NewToken(model.Phone, TOKEN_TYPE_APP)
	http.SetCookie(w, &http.Cookie{
		Name:  "token",
		Value: token,
	})
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func appListDeviceHandler(w http.ResponseWriter, r *http.Request) {
	cookie := r.Header.Get("Cookie")
	user := ""
	token := ""
	if len(cookie) > 7 {
		index := strings.Index(cookie, "token=")
		token = cookie[index+6:]
		user = fastLinkService.GetUserByToken(token)
	}
	if user == "" {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "用户未登录",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	fastLinkService.RenewToken(token)
	devices := fastLinkService.GetDeviceByToken(token)
	var data []*AppDeviceListData
	for _, device := range devices {
		t := &AppDeviceListData{
			DeviceId:      device.DeviceId,
			DeviceNo:      device.DeviceNo,
			DeviceName:    device.DeviceName,
			ExpireTime:    nil,
			ExpireTimeStr: nil,
			ClientVersion: nil,
		}
		if device.CustomName != "" {
			t.DeviceName = device.CustomName
		}
		if device.Online {
			t.OnlineState = 1
		} else {
			t.OnlineState = 0
		}
		if device.Visible {
			t.EnableConnect = 1
		} else {
			t.EnableConnect = 0
		}

		data = append(data, t)
	}
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    data,
		Success: true,
		Error:   false,
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func logoutHandler(w http.ResponseWriter, r *http.Request) {
	cookie := r.Header.Get("Cookie")
	user := ""
	token := ""
	if len(cookie) > 7 {
		index := strings.Index(cookie, "token=")
		token = cookie[index+6:]
		user = fastLinkService.GetUserByToken(token)
	}
	if user == "" {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "用户未登录",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	fastLinkService.RemoveToken(token)

	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    nil,
		Success: true,
		Error:   false,
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func registerHandler(w http.ResponseWriter, r *http.Request) {
	data, _ := ioutil.ReadAll(r.Body)
	defer r.Body.Close()
	var model *RegisterModel
	json.Unmarshal(data, &model)

	if model.UserName == "" || model.Phone == "" {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "用户名不能为空",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	if model.Password == "" {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "密码不能为空",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	if model.Password != model.Password2 {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "两次密码输入不一致",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	if model.Password != model.Password2 {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "两次密码输入不一致",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	exist := fastLinkService.CheckUserExist(model.UserName)
	if exist {
		errResp := WebApiResponse{
			TraceId: nil,
			Code:    500,
			Message: "此手机号已被其他用户绑定！",
			Data:    nil,
			Success: false,
			Error:   true,
		}
		marshal, _ := json.Marshal(errResp)
		w.Write(marshal)
		return
	}
	fastLinkService.AddUser(model.UserName, model.Password)
	resp := WebApiResponse{
		TraceId: nil,
		Code:    200,
		Message: "",
		Data:    nil,
		Success: true,
		Error:   false,
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}

func sendCodeHandler(w http.ResponseWriter, r *http.Request) {
	resp := WebApiResponse{
		TraceId: nil,
		Code:    500,
		Message: "私服未实现发送验证码,输入任意验证码即可",
		Data:    nil,
		Success: false,
		Error:   true,
	}
	marshal, _ := json.Marshal(resp)
	w.Write(marshal)
}