/*
 *   SPDX-FileCopyrightText: 2015 Marco Martin <notmart@gmail.com>
 *
 *   SPDX-License-Identifier: LGPL-2.0-or-later
 */

import QtQuick 2.14
import QtQuick.Layouts 1.1
import QtQuick.Window 2.2
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.components 2.0 as PlasmaComponents
import org.kde.plasma.networkmanagement 0.2 as PlasmaNM
import org.kde.bluezqt 1.0 as BluezQt
import org.kde.colorcorrect 0.1 as CC
import org.kde.plasma.private.nanoshell 2.0 as NanoShell

import org.kde.plasma.components 3.0 as PC3

Item {
    id: root

    implicitWidth: column.implicitWidth + units.smallSpacing * 6
    implicitHeight: column.implicitHeight + units.smallSpacing * 2

    signal closeRequested
    signal closed

    property bool expandedMode: parentSlidingPanel.wideScreen
    readonly property real expandedRatio: expandedMode ? 1 : Math.max(0, Math.min(1, (parentSlidingPanel.offset - firstRowHeight - parentSlidingPanel.headerHeight) / otherRowsHeight))

    readonly property real topEmptyAreaHeight: parentSlidingPanel.userInteracting
        ? (root.height - collapsedHeight) * (1 - expandedRatio)
        : (expandedMode ? 0 : root.height - collapsedHeight)
     
    readonly property real collapsedHeight: firstRowHeight + PlasmaCore.Units.smallSpacing * 2
    readonly property real firstRowHeight: flow.children[0].height
    readonly property real otherRowsHeight: column.height - firstRowHeight

    Connections {
        target: root.parentSlidingPanel
        function onUserInteractingChanged() {
            if (!parentSlidingPanel.userInteracting) {
                if (root.expandedRatio > 0.7) {
                    root.expandedMode = true;
                }
            }
        }
    }

    property bool screenshotRequested: false

    property NanoShell.FullScreenOverlay parentSlidingPanel
    property Item background
    onBackgroundChanged: {
        background.parent = backgroundParent
        background.anchors.fill = backgroundParent
    }

    PlasmaNM.Handler {
        id: nmHandler
    }

    PlasmaNM.EnabledConnections {
        id: enabledConnections
    }

    Connections {
        target: root.Window.window
        function onVisibilityChanged() {
                root.expandedMode = parentSlidingPanel.wideScreen;
            
        }
    }

    Connections {
        target: BluezQt.Manager

        function onBluetoothOperationalChanged() {
            settingsModel.get(2).enabled = BluezQt.Manager.bluetoothOperational
        }
    }

    function toggleAirplane() {
        print("toggle airplane mode")
    }

    function toggleTorch() {
        plasmoid.nativeInterface.toggleTorch()
        settingsModel.get(6).enabled = plasmoid.nativeInterface.torchEnabled
    }

    function toggleWifi() {
        nmHandler.enableWireless(!enabledConnections.wirelessEnabled)
        settingsModel.get(1).enabled = !enabledConnections.wirelessEnabled
    }

    function toggleWwan() {
        nmHandler.enableWwan(!enabledConnections.wwanEnabled)
        settingsModel.get(3).enabled = !enabledConnections.wwanEnabled
    }

    function toggleRotation() {
        const enable = !plasmoid.nativeInterface.autoRotateEnabled
        plasmoid.nativeInterface.autoRotateEnabled = enable
        settingsModel.get(9).enabled = enable
    }

    function toggleBluetooth() {
        var enable = !BluezQt.Manager.bluetoothOperational;
        BluezQt.Manager.bluetoothBlocked = !enable;

        for (var i = 0; i < BluezQt.Manager.adapters.length; ++i) {
            var adapter = BluezQt.Manager.adapters[i];
            adapter.powered = enable;
        }
    }
    
    function toggleNightColor() {
        if (compositorAdaptor.active) {
            compositorAdaptor.activeStaged = false;
        } else {
            compositorAdaptor.activeStaged = true;
            compositorAdaptor.modeStaged = 3; // always on
        }
        compositorAdaptor.sendConfigurationAll();
        settingsModel.get(10).enabled = compositorAdaptor.active;
    }

    function requestShutdown() {
        print("Shutdown requested, depends on ksmserver running");
        var service = pmSource.serviceForSource("PowerDevil");
        //note the strange camelCasing is intentional
        var operation = service.operationDescription("requestShutDown");
        return service.startOperationCall(operation);
    }

    signal plasmoidTriggered(var applet, var id)
    Layout.minimumHeight: flow.implicitHeight + units.largeSpacing*2

    property int screenBrightness
    property bool disableBrightnessUpdate: true
    readonly property int maximumScreenBrightness: pmSource.data["PowerDevil"] ? pmSource.data["PowerDevil"]["Maximum Screen Brightness"] || 0 : 0

    onScreenBrightnessChanged: {
        if(!disableBrightnessUpdate) {
            var service = pmSource.serviceForSource("PowerDevil");
            var operation = service.operationDescription("setBrightness");
            operation.brightness = screenBrightness;
            operation.silent = true
            service.startOperationCall(operation);
        }
    }

    function requestScreenshot() {
        screenshotRequested = true;
        root.closeRequested();
    }

    onClosed: {
        if (screenshotRequested) {
            plasmoid.nativeInterface.takeScreenshot();
            screenshotRequested = false;
        }
    }

    PlasmaCore.DataSource {
        id: pmSource
        engine: "powermanagement"
        connectedSources: ["PowerDevil"]
        onSourceAdded: {
            if (source === "PowerDevil") {
                disconnectSource(source);
                connectSource(source);
            }
        }
        onDataChanged: {
            disableBrightnessUpdate = true;
            root.screenBrightness = pmSource.data["PowerDevil"]["Screen Brightness"];
            disableBrightnessUpdate = false;
        }
    }
    
    // night color
    CC.CompositorAdaptor {
        id: compositorAdaptor
    }
    
    //HACK: make the list know about the applet delegate which is a qtobject
    QtObject {
        id: nullApplet
    }
    Component.onCompleted: {
        //NOTE: add all in javascript as the static decl of listelements can't have scripts
        settingsModel.append({
            "text": i18n("Settings"),
            "icon": "configure",
            "enabled": false,
            "settingsCommand": "plasma-settings",
            "toggleFunction": "",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Wifi"),
            "icon": "network-wireless-signal",
            "settingsCommand": "plasma-settings -m kcm_mobile_wifi",
            "toggleFunction": "toggleWifi",
            "enabled": enabledConnections.wirelessEnabled,
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Bluetooth"),
            "icon": "network-bluetooth",
            "settingsCommand": "plasma-settings -m kcm_bluetooth",
            "toggleFunction": "toggleBluetooth",
            "delegate": "",
            "enabled": BluezQt.Manager.bluetoothOperational,
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Mobile Data"),
            "icon": "network-modem",
            "settingsCommand": "plasma-settings -m kcm_mobile_broadband",
            "toggleFunction": "toggleWwan",
            "enabled": enabledConnections.wwanEnabled,
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Battery"),
            "icon": "battery-full",
            "enabled": false,
            "settingsCommand": "plasma-settings -m kcm_mobile_power",
            "toggleFunction": "",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Sound"),
            "icon": "audio-speakers-symbolic",
            "enabled": false,
            "settingsCommand": "plasma-settings -m kcm_pulseaudio",
            "toggleFunction": "",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Flashlight"),
            "icon": "flashlight-on",
            "enabled": plasmoid.nativeInterface.torchEnabled,
            "settingsCommand": "",
            "toggleFunction": "toggleTorch",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Location"),
            "icon": "gps",
            "enabled": false,
            "settingsCommand": "",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Screenshot"),
            "icon": "spectacle",
            "enabled": false,
            "settingsCommand": "",
            "toggleFunction": "requestScreenshot",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Auto-rotate"),
            "icon": "rotation-allowed",
            "enabled": plasmoid.nativeInterface.autoRotateEnabled,
            "settingsCommand": "",
            "toggleFunction": "toggleRotation",
            "applet": null
        });
        settingsModel.append({
            "text": i18n("Night Color"),
            "icon": "redshift-status-on",
            "enabled": compositorAdaptor.active,
            "settingsCommand": "", // change once night color kcm is added
            "toggleFunction": "toggleNightColor",
            "applet": null
        });

        brightnessSlider.moved.connect(function() {
            root.screenBrightness = brightnessSlider.value;
        });
        disableBrightnessUpdate = false;
    }

    ListModel {
        id: settingsModel
    }

    Item {
        id: backgroundParent
        anchors {
            left: parent.left
            right: parent.right
            bottom: parent.bottom
        }
        height: firstRowHeight + otherRowsHeight * root.expandedRatio
    }

    Item {
        anchors {
            fill: parent
            margins: units.smallSpacing
        }

        readonly property real cellSizeHint: units.iconSizes.large + units.smallSpacing * 6
        readonly property real columnWidth: Math.floor(width / Math.floor(width / cellSizeHint))

        ColumnLayout {
            id: column
            anchors.fill: parent
            spacing: 0
            
            Flow {
                id: flow
                Layout.fillWidth: true
                Layout.leftMargin: units.smallSpacing + (units.largeSpacing - units.smallSpacing) * root.expandedRatio
                Layout.rightMargin: units.largeSpacing
                Layout.topMargin: units.largeSpacing

                readonly property real cellSizeHint: units.iconSizes.large + units.smallSpacing * 6
                readonly property real columnWidth: Math.floor(width / Math.floor(width / cellSizeHint))
                spacing: 0
                Repeater {
                    model: settingsModel
                    delegate: Delegate {
                        id: delegateItem

                        //FIXME: why this is needed?
                        width: flow.columnWidth - (y > 0 ? 0 : (flow.columnWidth/Math.floor(flow.width / flow.columnWidth)) * (1 - root.expandedRatio))
                        height: item ? item.implicitHeight : 0

                        labelOpacity: y > 0  ? 1 : root.expandedRatio

                        opacity: y <= 0  ? 1 : root.expandedRatio
                        transform: Translate {
                            y: otherRowsHeight * (1 - root.expandedRatio)
                        }

                        Connections {
                            target: delegateItem
                            onCloseRequested: root.closeRequested();
                        }
                        Connections {
                            target: root
                            onClosed: delegateItem.panelClosed();
                        }
                    }
                }

                move: Transition {
                    NumberAnimation {
                        duration: units.shortDuration
                        //Here a linear easing actually looks better
                        //easing.type: Easing.InOutQuad
                        properties: "x,y"
                    }
                }
            }
            BrightnessItem {
                id: brightnessSlider
                
                Layout.bottomMargin: units.largeSpacing
                Layout.leftMargin: units.largeSpacing
                Layout.rightMargin: units.largeSpacing
                Layout.fillWidth: true
                
                value: root.screenBrightness
                maximumValue: root.maximumScreenBrightness
                opacity: root.expandedRatio
                transform: Translate {
                    y: otherRowsHeight * (1 - root.expandedRatio)
                }

                Connections {
                    target: root
                    onScreenBrightnessChanged: brightnessSlider.value = root.screenBrightness
                }
            }
        }
    }
}