import 'jquery';
import loading from '../../../components/loading/loading';
import { Events } from 'jellyfin-apiclient';
import globalize from '../../../scripts/globalize';
import serverNotifications from '../../../scripts/serverNotifications';
import { formatDistance, formatDistanceToNow } from 'date-fns';
import { getLocale, localeWithSuffix } from '../../../scripts/dfnshelper';
import '../../../components/listview/listview.scss';
import '../../../elements/emby-button/emby-button';

/* eslint-disable indent */

    function reloadList(page) {
        ApiClient.getScheduledTasks({
            isHidden: false
        }).then(function(tasks) {
            populateList(page, tasks);
            loading.hide();
        });
    }

    function populateList(page, tasks) {
        tasks = tasks.sort(function(a, b) {
            a = a.Category + ' ' + a.Name;
            b = b.Category + ' ' + b.Name;
            return a == b ? 0 : a < b ? -1 : 1;
        });

        let currentCategory;
        let html = '';
        for (let i = 0; i < tasks.length; i++) {
            const task = tasks[i];
            if (task.Category != currentCategory) {
                currentCategory = task.Category;
                if (currentCategory) {
                    html += '</div>';
                    html += '</div>';
                }
                html += '<div class="verticalSection verticalSection-extrabottompadding">';
                html += '<div class="sectionTitleContainer" style="margin-bottom:1em;">';
                html += '<h2 class="sectionTitle">';
                html += currentCategory;
                html += '</h2>';
                if (i === 0) {
                    html += '<a is="emby-linkbutton" class="raised button-alt headerHelpButton" target="_blank" href="https://docs.jellyfin.org/general/server/tasks.html">' + globalize.translate('Help') + '</a>';
                }
                html += '</div>';
                html += '<div class="paperList">';
            }
            html += '<div class="listItem listItem-border scheduledTaskPaperIconItem" data-status="' + task.State + '">';
            html += "<a is='emby-linkbutton' style='margin:0;padding:0;' class='clearLink listItemIconContainer' href='scheduledtask.html?id=" + task.Id + "'>";
            html += '<span class="material-icons listItemIcon schedule"></span>';
            html += '</a>';
            html += '<div class="listItemBody two-line">';
            html += "<a class='clearLink' style='margin:0;padding:0;display:block;text-align:left;' is='emby-linkbutton' href='scheduledtask.html?id=" + task.Id + "'>";
            html += "<h3 class='listItemBodyText'>" + task.Name + '</h3>';
            html += "<div class='secondary listItemBodyText' id='taskProgress" + task.Id + "'>" + getTaskProgressHtml(task) + '</div>';
            html += '</a>';
            html += '</div>';
            if (task.State === 'Running') {
                html += '<button type="button" is="paper-icon-button-light" id="btnTask' + task.Id + '" class="btnStopTask" data-taskid="' + task.Id + '" title="' + globalize.translate('ButtonStop') + '"><span class="material-icons stop"></span></button>';
            } else if (task.State === 'Idle') {
                html += '<button type="button" is="paper-icon-button-light" id="btnTask' + task.Id + '" class="btnStartTask" data-taskid="' + task.Id + '" title="' + globalize.translate('ButtonStart') + '"><span class="material-icons play_arrow"></span></button>';
            }
            html += '</div>';
        }
        if (tasks.length) {
            html += '</div>';
            html += '</div>';
        }
        page.querySelector('.divScheduledTasks').innerHTML = html;
    }

    function getTaskProgressHtml(task) {
        let html = '';
        if (task.State === 'Idle') {
            if (task.LastExecutionResult) {
                const endtime = Date.parse(task.LastExecutionResult.EndTimeUtc);
                const starttime = Date.parse(task.LastExecutionResult.StartTimeUtc);
                html += globalize.translate('LabelScheduledTaskLastRan', formatDistanceToNow(endtime, localeWithSuffix),
                    formatDistance(starttime, endtime, { locale: getLocale() }));
                if (task.LastExecutionResult.Status === 'Failed') {
                    html += " <span style='color:#FF0000;'>(" + globalize.translate('LabelFailed') + ')</span>';
                } else if (task.LastExecutionResult.Status === 'Cancelled') {
                    html += " <span style='color:#0026FF;'>(" + globalize.translate('LabelCancelled') + ')</span>';
                } else if (task.LastExecutionResult.Status === 'Aborted') {
                    html += " <span style='color:#FF0000;'>" + globalize.translate('LabelAbortedByServerShutdown') + '</span>';
                }
            }
        } else if (task.State === 'Running') {
            const progress = (task.CurrentProgressPercentage || 0).toFixed(1);
            html += '<div style="display:flex;align-items:center;">';
            html += '<div class="taskProgressOuter" title="' + progress + '%" style="flex-grow:1;">';
            html += '<div class="taskProgressInner" style="width:' + progress + '%;">';
            html += '</div>';
            html += '</div>';
            html += "<span style='color:#00a4dc;margin-left:5px;'>" + progress + '%</span>';
            html += '</div>';
        } else {
            html += "<span style='color:#FF0000;'>" + globalize.translate('LabelStopping') + '</span>';
        }
        return html;
    }

    function setTaskButtonIcon(button, icon) {
        const inner = button.querySelector('.material-icons');
        inner.classList.remove('stop', 'play_arrow');
        inner.classList.add(icon);
    }

    function updateTaskButton(elem, state) {
        if (state === 'Running') {
            elem.classList.remove('btnStartTask');
            elem.classList.add('btnStopTask');
            setTaskButtonIcon(elem, 'stop');
            elem.title = globalize.translate('ButtonStop');
        } else if (state === 'Idle') {
            elem.classList.add('btnStartTask');
            elem.classList.remove('btnStopTask');
            setTaskButtonIcon(elem, 'play_arrow');
            elem.title = globalize.translate('ButtonStart');
        }
        $(elem).parents('.listItem')[0].setAttribute('data-status', state);
    }

    export default function(view) {
        function updateTasks(tasks) {
            for (let i = 0; i < tasks.length; i++) {
                const task = tasks[i];
                view.querySelector('#taskProgress' + task.Id).innerHTML = getTaskProgressHtml(task);
                updateTaskButton(view.querySelector('#btnTask' + task.Id), task.State);
            }
        }

        function onPollIntervalFired() {
            if (!ApiClient.isMessageChannelOpen()) {
                reloadList(view);
            }
        }

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

        function startInterval() {
            ApiClient.sendMessage('ScheduledTasksInfoStart', '1000,1000');
            pollInterval && clearInterval(pollInterval);
            pollInterval = setInterval(onPollIntervalFired, 1e4);
        }

        function stopInterval() {
            ApiClient.sendMessage('ScheduledTasksInfoStop');
            pollInterval && clearInterval(pollInterval);
        }

        let pollInterval;
        const serverId = ApiClient.serverId();

        $('.divScheduledTasks', view).on('click', '.btnStartTask', function() {
            const button = this;
            const id = button.getAttribute('data-taskid');
            ApiClient.startScheduledTask(id).then(function() {
                updateTaskButton(button, 'Running');
                reloadList(view);
            });
        });

        $('.divScheduledTasks', view).on('click', '.btnStopTask', function() {
            const button = this;
            const id = button.getAttribute('data-taskid');
            ApiClient.stopScheduledTask(id).then(function() {
                updateTaskButton(button, '');
                reloadList(view);
            });
        });

        view.addEventListener('viewbeforehide', function() {
            Events.off(serverNotifications, 'ScheduledTasksInfo', onScheduledTasksUpdate);
            stopInterval();
        });

        view.addEventListener('viewshow', function() {
            loading.show();
            startInterval();
            reloadList(view);
            Events.on(serverNotifications, 'ScheduledTasksInfo', onScheduledTasksUpdate);
        });
    }

/* eslint-enable indent */
