<template>
    <div class="body-color">
      <!-- LOADER -->
      <div class="loader" v-if="showLoader">
        <v-progress-circular indeterminate color="white"></v-progress-circular>
      </div>
  
      <!-- SNACKBAR -->
      <v-snackbar
        :timeout="timeout"
        :top="y === 'top'"
        :right="x === 'right'"
        :vertical="mode === 'vertical'"
        v-model="snackbar"
        :color="snackbarColor"
      >
        {{ text }}
        <v-spacer></v-spacer>
        <v-btn flat text @click="snackbar = false">X</v-btn>
      </v-snackbar>

      <v-container grid-list-xl class="pt-0">
        <v-layout row wrap class="mt-1">

          <!-- if logged in user is parent -->

          <v-flex xs12 sm12 md9 v-if=" $store.state.role === 'PARENT' ">
            <v-layout column>
              <!-- HEADING -->
              <v-flex>

                <div
                  class="title side-bar-color font-weight-bold"
                >Live Online Classes - {{$route.query.chapterName}}</div>

                <!-- <div class="subheading grey--text lighten-1">{{liveLink}}</div> -->

                <!-- <div

                  class="subheading grey--text lighten-1"

                >The session started at 1:00 there is 1 moderator</div>-->

              </v-flex>
  
              <!-- JOIN OR END SESSION -->

              <v-flex v-if="showJoinSessionButton">

                <div>

                  <v-btn
                    round
                    class="open-dialog-button"
                    dark
                    v-if="studentBtn"

                    @click="showLoader = true;startChat();"

                  >{{studentBtn}}</v-btn>

                  <span class="subheading grey--twxt lighten-1" v-else>Session hasn't started yet</span>

                </div>
              </v-flex>

              <v-flex id="studentClone">

                <div id="jitsi-container"></div>
              </v-flex>

            </v-layout>
          </v-flex>

  
          <!-- if logged in user is teacher -->

          <v-flex xs12 sm12 md12 v-else>

            <v-layout column>
              <!-- HEADING -->
              <v-flex>

                <div
                  class="title side-bar-color font-weight-bold"
                >Live Online Classes - {{$route.query.chapterName}}</div>

                <!-- <div class="subheading grey--text lighten-1"></div> -->
                <!-- <div

                  class="subheading grey--text lighten-1"

                >The session started at 1:00 there is 1 moderator</div>-->

              </v-flex>
  
              <!-- JOIN OR END SESSION -->

              <v-flex v-if="showStartSessionButton">

                <div>

                  <v-btn
                    round
                    class="open-dialog-button"
                    dark
                    @click="showLoader = true;startChat()"
                  >Start Session</v-btn>

                </div>
              </v-flex>

              <v-flex id="teacherClone">

                <div id="jitsi-container"></div>

              </v-flex>
            </v-layout>
          </v-flex>
  
          <v-spacer></v-spacer>

          <!-- COURSES SIDE BAR- positioned to the right of the page -->

          <!-- <v-flex xs3>

            <v-card class="elevation-0 card-border" height="100%">

              <CoursesSideBar></CoursesSideBar>

            </v-card>

          </v-flex>-->

        </v-layout>
      </v-container>
    </div>
  </template>
  <script>
  import AllApiCalls from "@/Services/AllApiCalls.js";
  import http from "@/Services/http.js";
  import moment from "moment";

  import Meet from "@/pages/Meet/meet.vue";
  import CoursesSideBar from "@/pages/Common/CoursesSideBar.vue";

  export default {
    mixins: [AllApiCalls],

    components: {

      CoursesSideBar,

    },

    data() {
      return {

        startLiveSession: "",

        studentBtn: "",

  
        // DATA TABLE
        search: "",
        pagination: {

          rowsPerPage: 10,

        },
        liveOnlineHeaders: [
          {
            text: "Playback",
            value: "attachementUrl",
            sortable: false,

            align: "center",

          },
          {
            text: "Meeting",
            align: "center",
            sortable: false,

            value: "",

          },
          {
            text: "Recording",
            value: "",
            sortable: false,

            align: "center",

          },
          {
            text: "Description Preview",
            value: "",
            sortable: false,

            align: "center",

          },
          { text: "Date", value: "", sortable: false, align: "center" },
          { text: "Duration", value: "", sortable: false, align: "center" },

          { text: "Toolbar", value: "", sortable: false, align: "center" },

        ],
        liveOnlineItems: [],

        // JITSI CONTAINER

        liveLink: "",

        token: "",
        selectStudents: {},

        classRules: [(v) => !!v || " Class Name is required"],
        sectionRules: [(v) => !!v || " Section Name is required"],

        addclass: [],
        addSection: [],
        loading: false,
        room: "",
        username: "",

        roomPassword: "",

        //   counter: 0,

        appLink: "",

        showStartSessionButton: true,

        showJoinSessionButton: true,

        courseAttendanceId: {},

      };
    },
    methods: {

      async startChat() {

        if (this.$store.state.role === "PARENT") {

          // if (this.counter == 0) {
          //   console.log("enter start chat");
          const isMobile = /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);
          if (isMobile) {
            window.open(this.appLink);
            this.showLoader = false;
          } else {
            this.startConference();

            this.createAttendence();

            // this.counter += 1;
            this.showJoinSessionButton = false;

          }

          // }

        }
        if (this.$store.state.role === "TEACHER") {

          // if (this.counter == 0) {
          this.createRoom();
          //   this.counter += 1;
          // }

        }
      },

      // JITSI CONTAINER
      startConference() {

        //   console.log("yes session started");

        var _this = this;
        try {

          const domain = "meet.intrack.in";

          const options = {
            audioInput: "<deviceLabel>",
            audioOutput: "<deviceLabel>",
            videoInput: "<deviceLabel>",

            prejoinPageEnabled: false,

            roomName: this.room,
            height: 500,
            parentNode: document.getElementById("jitsi-container"),
            interfaceConfigOverwrite: {
              filmStripOnly: false,

              SHOW_PROMOTIONAL_CLOSE_PAGE: false,
              SHOW_POWERED_BY: false,

              SHOW_JITSI_WATERMARK: false,
              TOOLBAR_BUTTONS: [
                "microphone",
                "camera",
                "closedcaptions",
                "desktop",
                "fullscreen",
                "fodeviceselection",
                "hangup",
                "profile",
                "info",
                "chat",
                "recording",
                "livestreaming",
                "etherpad",
                "sharedvideo",
                "settings",
                "raisehand",
                "videoquality",
                "filmstrip",
                "invite",
                "feedback",
                "stats",
                "shortcuts",

                "tileview",
              ],

            },
            configOverwrite: {

              disableSimulcast: false,

            },
            teacherName: "",

            room: "",

          };

          _this.api = new JitsiMeetExternalAPI(domain, options);

          // console.log("this.api ", this.api);

          _this.api.addEventListener("videoConferenceJoined", () => {

            this.showLoader = false;

            setTimeout(() => {
              _this.api.executeCommand("displayName", _this.username);
              _this.api.executeCommand("password", _this.roomPassword);
            }, 1000);

          });

          _this.api.on("passwordRequired", () => {
            _this.api.executeCommand("password", _this.roomPassword);
          });

          _this.api.on("readyToClose", () => {

            //   this.$router.push({ name: "Refresh" });
            let jitsi = document.getElementById("jitsi-container");
            jitsi.innerHTML = "";
            this.showStartSessionButton = true;

            this.showJoinSessionButton = true;

            if (this.$store.state.role === "TEACHER") {
              this.updateLiveClass();
            }

          });

        } catch (error) {

          // console.error("Failed to load Jitsi API", error);

        }
      },

      openRoom() {
        // verify the JitsiMeetExternalAPI constructor is added to the global..
        // if (this.teacherName != "" || this.room != "") {
        //   if (window.JitsiMeetExternalAPI) {
        //     // var person = prompt("Please enter your name:", "Rabie");
        //     if (person != null || person != "") this.username = this.teacherName;
        //     var room = prompt("Please enter your room:", "Test Room");
        //     if (room != null || room != "") this.room = this.room;
        //     this.startConference();
        //   } else alert("Jitsi Meet API script not loaded");
        // }

      },

      createRoom(classId) {

        // this.showLoader = true;

        var classId = {

          classId: classId,

        };
        http()

          .post("/createLiveClasses", {
            classId: this.$route.query.classId,
            courseId: this.$route.query.courseId,

            chapterId: this.$route.query.chapterId,

          })

          .then((response) => {

            // this.addSection = response.data.data;

            //   console.log("CREATE___ROOOM", response.data);

            var room = response.data.data.roomName;

            var username = localStorage.getItem("teacherName");

            var roomPassword = response.data.data.password;

            this.appLink = response.data.data.appLink;

            this.liveClassId = response.data.data._id;

            //   console.log(
            //     "room",
            //     room,
            //     "username",
            //     username,
            //     "roomPassword",
            //     roomPassword
            //   );

            var this_ = this;

            if (username != "" || room != "") {

              const isMobile = /iPhone|iPad|iPod|Android/i.test(
                navigator.userAgent
              );
              if (isMobile) {
                //   console.log("==TEACHER=appLink==", this.appLink);
                window.open(this.appLink);

                this.showLoader = false;
                this.showStartSessionButton = false;

              } else {
                if (window.JitsiMeetExternalAPI) {
                  // var person = prompt("Please enter your name:", "Rabie");
                  if (username != null || username != "") {
                    this_.username = username;
                  }
                  // var room = prompt("Please enter your room:", "Test Room");
                  if (room != null || room != "") {
                    this_.room = room;
                  }
                  if (roomPassword != null || roomPassword != "") {
                    this_.roomPassword = roomPassword;
                  }
                } else alert("Jitsi Meet API script not loaded");
                this_.startConference();

                this.showStartSessionButton = false;

              }

            }

          })

          .catch((err) => {

            this.showLoader = false;
          });

      },

      formatAMPM(date) {
        var hours = date.getHours();
        var minutes = date.getMinutes();
        var ampm = hours >= 12 ? "pm" : "am";
        hours = hours % 12;
        hours = hours ? hours : 12; // the hour '0' should be '12'
        minutes = minutes < 10 ? "0" + minutes : minutes;
        var strTime = hours + ":" + minutes + " " + ampm;
        return strTime;
      },
      createAttendence() {
        let studentId = localStorage.getItem("parentStudentId");
        let todayDate = new Date();
        var attendenceData = {
          classId: this.$route.query.classId,
          studentId: studentId,
          date: new Date().toISOString().substr(0, 10),
          studentAttendance: [
            {
              courseId: this.$route.query.courseId,
              chapterId: this.$route.query.chapterId,
              liveClassId: this.attendenceLiveClassId,
              startTime: this.formatAMPM(new Date()),
            },
          ],
        };
        this.loading = true;
        http()
          .post("/createCourseAttendance", attendenceData)
          .then((response) => {

            this.courseAttendanceId = response.data.data._id;
            this.updateCourseAttendance();

            this.loading = false;
            //   this.snackbar = true;
            //   this.color = "green";
          })
          .catch((err) => {
            this.loading = false;
            this.snackbar = true;
            this.color = "error";
          });
      },

      updateLiveClass() {
        this.showLoader = true;
        var payloadData = {
          liveClassesId: this.liveClassId,
        };
        http()
          .put("/updateLiveClasses", payloadData)
          .then((response) => {
            this.showLoader = false;
          })
          .catch((error) => {
            this.showLoader = false;
          });
      },

      updateCourseAttendance() {
        this.showLoader = true;
        var payloadData = {
          courseAttendanceId: this.courseAttendanceId,
          liveClassId: this.attendenceLiveClassId,
          endTime: this.formatAMPM(new Date()),
        };
        http()
          .put("/updateCourseAttendance", payloadData)
          .then((response) => {
            this.showLoader = false;
          })
          .catch((error) => {
            this.showLoader = false;
          });
      },

      async studentClasses() {

        this.liveLink = "";
        this.room = "";
        this.username = "";
        this.roomPassword = "";

        /* getLiveClassesesList - To up date line under heading*/
        let response = await this.getLiveClassesesList({
          classId: this.$route.query.classId,
          courseId: this.$route.query.courseId,
          chapterId: this.$route.query.chapterId,
        });

        //   console.log("response getLiveClassesesList- ", response);

        this.attendenceLiveClassId = response.data.data[0]._id;

        /* CHECK RESPONSE TO ASSIGN MESSAGE INSIDE BUTTON */

        if (response.data.data[0].sessionStatus == "ENDED") {
          // this.startLiveSession = "Start Session";
          this.studentBtn = "";
        }
        if (response.data.data[0].sessionStatus == "STARTED") {
          // this.startLiveSession = "Join Session";
          this.studentBtn = "Join Session";
        }

        if (response.data.data.length == 0) {
          this.startLiveSession = "Start Session";
          this.studentBtn = "";
        } else {
          this.liveLink = response.data.data[0].link;

          this.appLink = response.data.data[0].appLink;

          var room = response.data.data[0].roomName;

          var username = this.currentUser;
          var roomPassword = response.data.data[0].password;

          var this_ = this;

          // console.log(this.room, this.roomPassword, this.username);

          if (username != "" || room != "") {

            if (window.JitsiMeetExternalAPI) {
              // var person = prompt("Please enter your name:", "Rabie");

              if (username != null || username != "") {

                this_.username = username;
              }
              if (roomPassword != null || roomPassword != "") {
                this_.roomPassword = roomPassword;

              }
              // var room = prompt("Please enter your room:", "Test Room");

              if (room != null || room != "") {

                this_.room = room;

              }

              // this.startConference();

            }

          }

        }

      },
    },

    async created() {

      // console.log(
      //   "this.$store.state.studentsData",
      //   this.$store.state.studentsData[0].name
      // );

      this.currentUser = localStorage.getItem("studentName");

      this.token = this.$store.state.token;

      if (this.$store.state.role === "PARENT") {

        await this.studentClasses();

      }
  
      /* getStudentCourses - to get courseData - defined in GetApis.js*/
      if (this.$store.state.role === "PARENT") {
        await this.getStudentCourses({
          classId: localStorage.getItem("parentClassId"),

          studentId: localStorage.getItem("parentStudentId"),

        });
      }

    },

  };
  </script>
  <style scoped>
  .side-bar-color {
    color: #827bfa !important;
    /* border-top-right-radius: 74px !important; */
  }
  .card-border {
    border: 1px #bdbdbd solid;
    border-radius: 3px;
  }
  .reply-desc {
    border: 1px solid #f2f2f2;
  }
  .open-dialog-button {
    background: #827bfa !important;
    border-color: #827bfa !important;
    text-transform: none !important;
  }
  
  .reply-btn {
    background: #feb83c !important;
    border-color: #feb83c !important;
    text-transform: none !important;
    -webkit-box-shadow: none !important;
    box-shadow: none !important;
  }

  #jitsi-container {
    height: 100vh;
  }

  </style>