/*
 * Copyright 2013  Heena Mahour <heena393@gmail.com>
 * Copyright 2013 Sebastian Kügler <sebas@kde.org>
 *
 * This program 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 2 of
 * the License, or (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import QtQuick 2.0
import QtQuick.Layouts 1.1
import org.kde.plasma.plasmoid 2.0
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.components 2.0 as PlasmaComponents
import org.kde.plasma.extras 2.0 as PlasmaExtras
import org.kde.kquickcontrolsaddons 2.0
import org.kde.plasma.private.digitalclock 1.0
import org.kde.kquickcontrolsaddons 2.0
import org.kde.plasma.calendar 2.0 as PlasmaCalendar

Item {
    id: root
    anchors.fill: parent
    
    // Updater 1/3 ==================================================================================================================================
    property string updateResponse;
    property string currentVersion: '5.5';
    property bool checkUpdateStartup: Plasmoid.configuration.checkUpdateStartup
    // ==============================================================================================================================================

    width: units.gridUnit * 10
    height: units.gridUnit * 4
    property string dateFormatString: setDateFormatString()
    property date tzDate: {
        // get the time for the given timezone from the dataengine
        var now = dataSource.data[plasmoid.configuration.lastSelectedTimezone]["DateTime"];
        // get current UTC time
        var msUTC = now.getTime() + (now.getTimezoneOffset() * 60000);
        // add the dataengine TZ offset to it
        return new Date(msUTC + (dataSource.data[plasmoid.configuration.lastSelectedTimezone]["Offset"] * 1000));
    }

    function initTimezones() {
        var tz  = Array()
        if (plasmoid.configuration.selectedTimeZones.indexOf("Local") === -1) {
            tz.push("Local");
        }
        root.allTimezones = tz.concat(plasmoid.configuration.selectedTimeZones);
    }

	//This is done to better control how the plasmoid should look and feel in a panel.
    Plasmoid.preferredRepresentation: Plasmoid.fullRepresentation
    Plasmoid.compactRepresentation: null
    Plasmoid.fullRepresentation: smallRepresentation

    Plasmoid.toolTipItem: Loader {
        id: tooltipLoader

        Layout.minimumWidth: item ? item.width : 0
        Layout.maximumWidth: item ? item.width : 0
        Layout.minimumHeight: item ? item.height : 0
        Layout.maximumHeight: item ? item.height : 0

        source: "Tooltip.qml"
    }

    //We need Local to be *always* present, even if not disaplayed as
    //it's used for formatting in ToolTip.dateTimeChanged()
    property var allTimezones
    Connections {
        target: plasmoid.configuration
        function onSelectedTimeZonesChanged() { root.initTimezones(); }
    }
    Component {
        id: mainRepresentation
        CalendarView {
            
        }
    }
    Component {
        id: smallRepresentation
        DigitalClock
        {}
    }

    PlasmaCore.DataSource {
        id: dataSource
        engine: "time"
        connectedSources: allTimezones
        interval: plasmoid.configuration.showSeconds ? 1000 : 60000
        intervalAlignment: plasmoid.configuration.showSeconds ? PlasmaCore.Types.NoAlignment : PlasmaCore.Types.AlignToMinute
    }

    function setDateFormatString() {
        // remove "dddd" from the locale format string
        // /all/ locales in LongFormat have "dddd" either
        // at the beginning or at the end. so we just
        // remove it + the delimiter and space
        var format = Qt.locale().dateFormat(Locale.LongFormat);
        format = format.replace(/(^dddd.?\s)|(,?\sdddd$)/, "");
        return format;
    }

    function action_clockkcm() {
        KCMShell.open("clock");
    }

    function action_formatskcm() {
        KCMShell.open("formats");
    }
    
    // Updater 2/3 ==================================================================================================================================
    
    PlasmaCore.DataSource {
        id: executableNotification
        engine: "executable"
        onNewData: disconnectSource(sourceName) // cmd finished
        function exec(cmd) {
            connectSource(cmd)
        }
    }
    
    Timer {
        id:timerStartUpdater
        interval: 300000
        onTriggered: updaterNotification(false)
    }

    function availableUpdate() {
        var notificationCommand = "notify-send --icon=clock 'Plasmoid Digital Clock Lite' 'An update is available \n<a href=\"https://www.opendesktop.org/p/1225135/\">Update link</a>' -t 30000";
        executableNotification.exec(notificationCommand);
    }

    function noAvailableUpdate() {
        var notificationCommand = "notify-send --icon=clock 'Plasmoid Digital Clock Lite' 'Your current version is up to date' -t 30000";
        executableNotification.exec(notificationCommand);
    }
    
    function updaterNotification(notifyUpdated) {
        var xhr = new XMLHttpRequest;
        xhr.responseType = 'text';
        xhr.open("GET", "https://raw.githubusercontent.com/Intika-Linux-Plasmoid/plasmoid-digital-clock-lite/master/version");
        xhr.onreadystatechange = function() {
            if (xhr.readyState == XMLHttpRequest.DONE) {
                updateResponse = xhr.responseText;
                console.log('.'+updateResponse+'.');
                console.log('.'+currentVersion+'.');
                //console.log('.'+xhr.status+'.');
                //console.log('.'+xhr.statusText+'.');
                if (updateResponse.localeCompare(currentVersion) && updateResponse.localeCompare('') && updateResponse.localeCompare('404: Not Found\n')) {
                    availableUpdate();
                } else if (notifyUpdated) {
                    noAvailableUpdate();
                }
            }
        };
        xhr.send();
    }
    
    function action_checkUpdate() {
        updaterNotification(true);
    }
    
    // ==============================================================================================================================================

    Component.onCompleted: {
        root.initTimezones();
        if (KCMShell.authorize("clock.desktop").length > 0) {
            plasmoid.setAction("clockkcm", i18n("Adjust Date and Time..."), "preferences-system-time");
        }
        if (KCMShell.authorize("formats.desktop").length > 0) {
            plasmoid.setAction("formatskcm", i18n("Set Time Format..."));
        }
        
        // Set the list of enabled plugins from config
        // to the manager
        PlasmaCalendar.EventPluginsManager.enabledPlugins = plasmoid.configuration.enabledCalendarPlugins;
        
        // Updater 3/3 ==============================================================================================================================
        plasmoid.setAction("checkUpdate", i18n("Check for updates on github"), "view-grid");
        if (checkUpdateStartup) {timerStartUpdater.start();}
        // ==========================================================================================================================================
    }
}