blindsidenetworks / moodle-mod_bigbluebuttonbn

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/** global: M */

/** global: Y */

M.mod_bigbluebuttonbn = M.mod_bigbluebuttonbn || {};

M.mod_bigbluebuttonbn.rooms = {

    datasource: null,

    bigbluebuttonbn: {},

    panel: null,

    pinginterval: null,

    /**

     * Initialise the broker code.

     *

     * @method init

     */

    init: function(bigbluebuttonbn) {

        this.datasource = new Y.DataSource.Get({

            source: M.cfg.wwwroot + "/mod/bigbluebuttonbn/bbb_broker.php?"

        });

        this.bigbluebuttonbn = bigbluebuttonbn;

        this.pinginterval = bigbluebuttonbn.ping_interval;

        if (this.pinginterval === 0) {

            this.pinginterval = 10000;

        }

        if (this.bigbluebuttonbn.profile_features.includes('all') || this.bigbluebuttonbn.profile_features.includes('showroom')) {

            this.initRoom();

        }

    },

    initRoom: function() {

        if (this.bigbluebuttonbn.activity !== 'open') {

            var statusBar = [M.util.get_string('view_message_conference_has_ended', 'bigbluebuttonbn')];

            if (this.bigbluebuttonbn.activity !== 'ended') {

                statusBar = [

                    M.util.get_string('view_message_conference_not_started', 'bigbluebuttonbn'),

                    this.bigbluebuttonbn.opening,

                    this.bigbluebuttonbn.closing

                  ];

            }

            Y.DOM.addHTML(Y.one('#status_bar'), this.initStatusBar(statusBar));

            return;

        }

        this.updateRoom();

    },

    updateRoom: function(f) {

        var forced = 'false';

        if (typeof f !== 'undefined' && f) {

            forced = 'true';

        }

        var id = this.bigbluebuttonbn.meetingid;

        var bnid = this.bigbluebuttonbn.bigbluebuttonbnid;

        this.datasource.sendRequest({

            request: 'action=meeting_info&id=' + id + '&bigbluebuttonbn=' + bnid + '&forced=' + forced,

            callback: {

                success: function(e) {

                    Y.DOM.addHTML(Y.one('#status_bar'),

                        M.mod_bigbluebuttonbn.rooms.initStatusBar(e.data.status.message));

                    Y.DOM.addHTML(Y.one('#control_panel'),

                        M.mod_bigbluebuttonbn.rooms.initControlPanel(e.data));

                    if (typeof e.data.status.can_join != 'undefined') {

                        Y.DOM.addHTML(Y.one('#join_button'),

                            M.mod_bigbluebuttonbn.rooms.initJoinButton(e.data.status));

                    }

                    if (typeof e.data.status.can_end != 'undefined' && e.data.status.can_end) {

                        Y.DOM.addHTML(Y.one('#end_button'),

                            M.mod_bigbluebuttonbn.rooms.initEndButton(e.data.status));

                    }

                    if (!e.data.status.can_join) {

                        M.mod_bigbluebuttonbn.rooms.waitModerator({

                            id: id,

                            bnid: bnid

                        });

                    }

                }

            }

        });

    },

    initStatusBar: function(statusMessage) {

        var statusBarSpan = Y.DOM.create('<span id="status_bar_span">');

        if (statusMessage.constructor !== Array) {

            Y.DOM.setText(statusBarSpan, statusMessage);

            return statusBarSpan;

        }

        for (var message in statusMessage) {

            if (!statusMessage.hasOwnProperty(message)) {

                continue; // Skip keys from the prototype.

            }

            var statusBarSpanSpan = Y.DOM.create('<span id="status_bar_span_span">');

            Y.DOM.setText(statusBarSpanSpan, statusMessage[message]);

            Y.DOM.addHTML(statusBarSpan, statusBarSpanSpan);

            Y.DOM.addHTML(statusBarSpan, Y.DOM.create('<br>'));

        }

        return statusBarSpan;

    },

    initControlPanel: function(data) {

        var controlPanelDiv = Y.DOM.create('<div>');

        Y.DOM.setAttribute(controlPanelDiv, 'id', 'control_panel_div');

        var controlPanelDivHtml = '';

        if (data.running) {

            controlPanelDivHtml += this.msgStartedAt(data.info.startTime) + ' ';

            controlPanelDivHtml += this.msgAttendeesIn(data.info.moderatorCount, data.info.participantCount);

        }

        Y.DOM.addHTML(controlPanelDiv, controlPanelDivHtml);

        return (controlPanelDiv);

    },

    msgStartedAt: function(startTime) {

        var startTimestamp = (parseInt(startTime, 10) - parseInt(startTime, 10) % 1000);

        var date = new Date(startTimestamp);

        var hours = date.getHours();

        var minutes = date.getMinutes();

        var started_at = M.util.get_string('view_message_session_started_at', 'bigbluebuttonbn');

        return started_at + ' <b>' + hours + ':' + (minutes < 10 ? '0' : '') + minutes + '</b>.';

    },

    msgModeratorsIn: function(moderators) {

        var msgModerators = M.util.get_string('view_message_moderators', 'bigbluebuttonbn');

        if (moderators == 1) {

            msgModerators = M.util.get_string('view_message_moderator', 'bigbluebuttonbn');

        }

        return msgModerators;

    },

    msgViewersIn: function(viewers) {

        var msgViewers = M.util.get_string('view_message_viewers', 'bigbluebuttonbn');

        if (viewers == 1) {

            msgViewers = M.util.get_string('view_message_viewer', 'bigbluebuttonbn');

        }

        return msgViewers;

    },

    msgAttendeesIn: function(moderators, participants) {

        var msgModerators, viewers, msgViewers, msg;

        if (!this.hasParticipants(participants)) {

            return M.util.get_string('view_message_session_no_users', 'bigbluebuttonbn') + '.';

        }

        msgModerators = this.msgModeratorsIn(moderators);

        viewers = participants - moderators;

        msgViewers = this.msgViewersIn(viewers);

        msg = M.util.get_string('view_message_session_has_users', 'bigbluebuttonbn');

        if (participants > 1) {

            return msg + ' <b>' + moderators + '</b> ' + msgModerators + ' and <b>' + viewers + '</b> ' + msgViewers + '.';

        }

        msg = M.util.get_string('view_message_session_has_user', 'bigbluebuttonbn');

        if (moderators > 0) {

            return msg + ' <b>1</b> ' + msgModerators + '.';

        }

        return msg + ' <b>1</b> ' + msgViewers + '.';

    },

    hasParticipants: function(participants) {

        return (typeof participants != 'undefined' && participants > 0);

    },

    initEndButton: function(status) {

        var endButtonInput = Y.DOM.create('<input>');

        Y.DOM.setAttribute(endButtonInput, 'id', 'end_button_input');

        Y.DOM.setAttribute(endButtonInput, 'type', 'button');

        Y.DOM.setAttribute(endButtonInput, 'value', status.end_button_text);

        Y.DOM.setAttribute(endButtonInput, 'class', 'btn btn-secondary');

        if (status.can_end) {

            Y.DOM.setAttribute(endButtonInput, 'onclick', 'M.mod_bigbluebuttonbn.broker.endMeeting();');

        }

        return endButtonInput;

    },

    endMeeting: function() {

        Y.one('#control_panel_div').remove();

        Y.one('#join_button').hide();

        Y.one('#end_button').hide();

    },

    remoteUpdate: function(delay) {

        setTimeout(function() {

            M.mod_bigbluebuttonbn.rooms.cleanRoom();

            M.mod_bigbluebuttonbn.rooms.updateRoom(true);

        }, delay);

    },

    cleanRoom: function() {

        Y.one('#status_bar_span').remove();

        Y.one('#control_panel_div').remove();

        Y.one('#join_button').setContent('');

        Y.one('#end_button').setContent('');

    },

    windowClose: function() {

        window.onunload = function() {

            /** global: opener */

            opener.M.mod_bigbluebuttonbn.rooms.remoteUpdate(5000);

        };

        window.close();

    },

    waitModerator: function(payload) {

        this.datasource.sendRequest({

            request: "action=meeting_info&id=" + payload.id + "&bigbluebuttonbn=" + payload.bnid,

            callback: {

                success: function(e) {

                    if (e.data.running) {

                        M.mod_bigbluebuttonbn.rooms.cleanRoom();

                        M.mod_bigbluebuttonbn.rooms.updateRoom();

                    }

                    return setTimeout(((function() {

                        return function() {

                            M.mod_bigbluebuttonbn.rooms.waitModerator(payload);

                        };

                    })(this)), M.mod_bigbluebuttonbn.rooms.pinginterval);

                },

                failure: function(e) {

                    payload.message = e.error.message;

                }

            }

        });

    },

    join: function(joinUrl) {

        M.mod_bigbluebuttonbn.broker.joinRedirect(joinUrl);

        // Update view.

        setTimeout(function() {

            M.mod_bigbluebuttonbn.rooms.cleanRoom();

            M.mod_bigbluebuttonbn.rooms.updateRoom(true);

        }, 15000);

    }

};