jellyfin-web/src/scripts/taskbutton.js

define(['events', 'userSettings', 'serverNotifications', 'connectionManager', 'globalize', 'emby-button'], function (events, userSettings, serverNotifications, connectionManager, globalize) {
    'use strict';

    return function (options) {
        function pollTasks() {
            connectionManager.getApiClient(serverId).getScheduledTasks({
                IsEnabled: true
            }).then(updateTasks);
        }

        function updateTasks(tasks) {
            var task = tasks.filter(function (t) {
                return t.Key == options.taskKey;
            })[0];

            if (options.panel) {
                if (task) {
                    options.panel.classList.remove('hide');
                } else {
                    options.panel.classList.add('hide');
                }
            }

            if (!task) {
                return;
            }

            if (task.State == 'Idle') {
                button.removeAttribute('disabled');
            } else {
                button.setAttribute('disabled', 'disabled');
            }

            button.setAttribute('data-taskid', task.Id);
            var progress = (task.CurrentProgressPercentage || 0).toFixed(1);

            if (options.progressElem) {
                options.progressElem.value = progress;

                if (task.State == 'Running') {
                    options.progressElem.classList.remove('hide');
                } else {
                    options.progressElem.classList.add('hide');
                }
            }

            if (options.lastResultElem) {
                var lastResult = task.LastExecutionResult ? task.LastExecutionResult.Status : '';

                if (lastResult == 'Failed') {
                    options.lastResultElem.html('<span style="color:#FF0000;">(' + globalize.translate('LabelFailed') + ')</span>');
                } else if (lastResult == 'Cancelled') {
                    options.lastResultElem.html('<span style="color:#0026FF;">(' + globalize.translate('LabelCancelled') + ')</span>');
                } else if (lastResult == 'Aborted') {
                    options.lastResultElem.html('<span style="color:#FF0000;">' + globalize.translate('LabelAbortedByServerShutdown') + '</span>');
                } else {
                    options.lastResultElem.html(lastResult);
                }
            }
        }

        function onScheduledTaskMessageConfirmed(id) {
            connectionManager.getApiClient(serverId).startScheduledTask(id).then(pollTasks);
        }

        function onButtonClick() {
            onScheduledTaskMessageConfirmed(this.getAttribute('data-taskid'));
        }

        function onScheduledTasksUpdate(e, apiClient, info) {
            if (apiClient.serverId() === serverId) {
                updateTasks(info);
            }
        }

        var pollInterval;
        var button = options.button;
        var serverId = ApiClient.serverId();

        function onPollIntervalFired() {
            if (!connectionManager.getApiClient(serverId).isMessageChannelOpen()) {
                pollTasks();
            }
        }

        function startInterval() {
            var apiClient = connectionManager.getApiClient(serverId);

            if (pollInterval) {
                clearInterval(pollInterval);
            }
            apiClient.sendMessage('ScheduledTasksInfoStart', '1000,1000');
            pollInterval = setInterval(onPollIntervalFired, 5000);
        }

        function stopInterval() {
            connectionManager.getApiClient(serverId).sendMessage('ScheduledTasksInfoStop');

            if (pollInterval) {
                clearInterval(pollInterval);
            }
        }

        if (options.panel) {
            options.panel.classList.add('hide');
        }

        if (options.mode == 'off') {
            button.removeEventListener('click', onButtonClick);
            events.off(serverNotifications, 'ScheduledTasksInfo', onScheduledTasksUpdate);
            stopInterval();
        } else {
            button.addEventListener('click', onButtonClick);
            pollTasks();
            startInterval();
            events.on(serverNotifications, 'ScheduledTasksInfo', onScheduledTasksUpdate);
        }
    };
});