@extends('layouts.meeting')
@section('content')

    <div id="meetComponent">

        {{--<h5 class="bg-dark font-weight-bold text-white m-0 py-3 px-4 d-flex">
            <span>Meeting</span>
            <span class="ml-auto" v-if="!started">
                Connecting...
            </span>
            <span class="ml-auto" v-if="started">
                <i class="fa fa-clock mr-1 text-light"></i>
                @{{ timeDisplay() }}
            </span>
        </h5>--}}

        @if(!$guest)
            <div v-if="!started" class="d-flex align-items-center justify-content-center py-2">
                <button class="btn btn-sm btn-primary px-4 font-weight-bold"
                        v-on:click.prevent="nextPatient()"
                        :disabled="client || checkingForNextPatient">Next Patient</button>
            </div>
            <div v-if="!started && noNextPatient" class="bg-light rounded text-center py-1 font-weight-bold text-sm">@{{ noNextPatient }}</div>
        @endif

        <div class="">
            <div class="py-3 text-center" v-if="started">
                <h6 class="text-black font-weight-bold m-0">Call in progress: @{{ timeDisplay() }}</h6>
            </div>
            @if($guest)
            <div class="py-3 text-center" v-if="!pro || !started">
                <h6 class="text-black font-weight-bold m-0">Please wait. Your doctor will be with you shortly...</h6>
            </div>
            @endif
            <div class="main-view mx-auto">
                <div id="self-view" class="<?= $guest ? 'full-view' : 'd-none' ?>"></div>
                <div <?= !$guest ? 'v-show="!!client"' : '' ?> id="remote-view" class="<?= $guest ? 'thumb-view' : 'full-view' ?>"></div>
                <button class="btn btn-danger rounded-circle hang-up"
                        v-if="started"
                        v-on:click.prevent="hangUp()">
                    <i class="fa fa-phone"></i>
                </button>
            </div>
        </div>

    </div>

    <script>

        new Vue({
            el: '#meetComponent',
            delimiters: ['@{{', '}}'],
            data: {
                time: 0,
                startTime: 0,
                started: false,
                client: false,
                pro: false,

                selfName: '',
                selfToken: '',

                @if($guest)
                clientUid: '',
                checkInToken: '',
                @endif

                otSessionId: '',

                @if(!$guest)
                checkingForNextPatient: false,
                noNextPatient: false,
                @endif

                otSession: false,
            },
            methods: {
                nextPatient: function() {
                    var self = this;
                    this.checkingForNextPatient = true;
                    $.post('/api/client/getNextClientForVideoVisit', {}, function(_data) {
                        self.checkingForNextPatient = false;
                        if(!_data.success) {
                            self.noNextPatient = _data.message;
                            window.setTimeout(function() {
                                self.noNextPatient = false;
                            }, 2000);
                        }
                        else {
                            // get ot session key from client record
                            self.client = true;
                            self.clientUid = _data.data;
                            self.getOpenTokSessionId(function() {
                                self.selfName = 'Pro'; // TODO: replace with name of authed pro
                                $.post('/api/openTok/getClientToken', {
                                    opentokSessionId: self.otSessionId,
                                    name: self.selfName
                                }, function (_data) {
                                    self.selfToken = _data.data;
                                    self.initOpenTok();
                                });
                            });
                        }
                    }, 'json');
                },
                getInitials: function(_name) {
                    var parts = _name.split(/\s+/g);
                    parts = parts.map(_part => _part[0]);
                    return parts.join('');
                },
                timeDisplay: function() {
                    var seconds = this.time / 1000,
                        minutes = parseInt(seconds / 60, 10);
                    seconds = parseInt(seconds % 60, 10);
                    return minutes + " min, " + seconds + " sec";
                },
                hangUp: function() {
                    if(this.otSession) {
                        this.otSession.disconnect();
                        this.otSession = false;
                        this.otSessionId = '';
                        this.started = false;
                        this.startTime = false;
                        @if(!$guest)
                        this.client = false;
                        @else
                        window.location = '/join';
                        @endif
                    }
                },

                // OT methods
                initOpenTok: function() {

                    /* fake video feed (temp) */
                    const randomColour = () => {
                        return Math.round(Math.random() * 255);
                    };

                    const canvas = document.createElement('canvas');
                    canvas.width = 640;
                    canvas.height = 480;
                    const ctx = canvas.getContext('2d');

                    var pos = 100;
                    window.setInterval(function() {
                        ctx.clearRect(0, 0, canvas.width, canvas.height);
                        ctx.font = "20px Georgia";
                        ctx.fillStyle = `rgb(220, 220, 220)`;
                        var userType = '<?= $guest? "Client" : "Pro" ?>';
                        ctx.fillText("Video feed from the " + userType, 20, pos);
                        pos += 5;
                        if(pos > canvas.height) pos = 100;
                    }, 1000);

                    var self = this;

                    var apiKey = '<?= env('TOKBOX_API_KEY', '46678902') ?>';
                    alert(apiKey);
                    var sessionId = this.otSessionId;
                    var token = this.selfToken;

                    // destroy if existing
                    self.hangUp();

                    self.otSession = OT.initSession(apiKey, sessionId);

                    // TODO: Subscribe to remote stream
                    self.otSession.on('streamCreated', function streamCreated(event) {
                        var subscriberOptions = {
                            insertMode: 'append',
                            width: '100%',
                            height: '100%'
                        };
                        self.otSession.subscribe(event.stream, 'remote-view', subscriberOptions, self.handleOpenTokError);

                        @if($guest)
                        $('#self-view').removeClass('full-view').addClass('thumb-view');
                        $('#remote-view').removeClass('thumb-view').addClass('full-view');
                        self.pro = true;
                        @else
                        self.client = true;
                        @endif

                        if(!self.startTime) {
                            self.startTime = new Date().getTime();
                            window.setInterval(function() {
                                self.time = new Date().getTime() - self.startTime;
                            }, 1000);
                            self.started = true;
                        }
                    });

                    self.otSession.on("streamDestroyed", function(event) {
                        @if($guest)
                        $('#remote-view').removeClass('full-view').addClass('thumb-view');
                        $('#self-view').removeClass('thumb-view').addClass('full-view');
                        self.pro = false;
                        @else
                        self.client = false;
                        @endif

                        self.started = false;
                        self.startTime = false;

                        self.hangUp();
                    });

                    self.otSession.on('sessionDisconnected', function sessionDisconnected(event) {
                        console.log('You were disconnected from the session.', event.reason);
                    });

                    // initialize the publisher
                    var publisherOptions = {
                        videoSource: canvas.captureStream(1).getVideoTracks()[0],
                        insertMode: 'append',
                        width: '100%',
                        height: '100%',
                    };
                    var publisher = OT.initPublisher('self-view', publisherOptions, self.handleOpenTokError);

                    // Connect to the session
                    self.otSession.connect(token, function callback(error) {
                        if (error) {
                            self.handleOpenTokError(error);
                        } else {
                            // If the connection is successful, publish the publisher to the session
                            self.otSession.publish(publisher, self.handleOpenTokError);
                        }
                    });
                },
                handleOpenTokError: function(e) {

                },

                getClientCheckinToken: function(_done) {
                    var self = this;
                    $.get('/get-client-checkin-token/' + this.clientUid, function(_data) {
                        console.log(_data);
                        self.checkInToken = _data.data;
                        _done();
                    }, 'json');
                },
                getOpenTokSessionId: function(_done) {
                    var self = this;

                    @if($guest)
                    $.ajax({
                        type: 'post',
                        url: '/api/clientVideoVisit/startVideoVisitAsStranger',
                        headers: {
                            'sessionKey': localStorage.sessionKey
                        },
                        data: {checkInToken: this.checkInToken},
                        dataType: 'json'
                    })
                        .done(function (_data) {
                            console.log(_data);
                            if(_data.success) {
                                self.otSessionId = _data.data;
                                _done();
                            }
                            else {
                                alert(_data.message);
                            }
                        })
                        .fail(function (_data) {
                            console.log(_data);
                            alert(_data.message);
                        });
                    @else
                    $.get('/pro/get-opentok-session-key/' + self.clientUid, function(_data) {
                        self.otSessionId = _data.data;
                        _done();
                    }, 'json');
                    @endif
                }
            },
            mounted: function() {

                var self = this;

                @if($guest)
                this.clientUid = localStorage.clientUid;
                this.getClientCheckinToken(function() { // get client check-in token

                    self.getOpenTokSessionId(function() { // get opentok session id
                        var name = [];
                        if (localStorage.clientFirstName) name.push(localStorage.clientFirstName);
                        if (localStorage.clientLastName) name.push(localStorage.clientLastName);
                        this.selfName = name.join(' ');
                        $.post('/api/openTok/getClientToken', {
                            opentokSessionId: self.otSessionId,
                            name: name.join(' ')
                        }, function (_data) {
                            self.selfToken = _data.data;
                            self.initOpenTok();
                        });
                    });
                });
                @endif

            }
        });
    </script>

@endsection