/*
    SPDX-FileCopyrightText: 2023 Niccolò Venerandi <niccolo.venerandi@kde.org>

    SPDX-License-Identifier: GPL-2.0-or-later
*/

import QtQuick
import QtQuick.Layouts
import QtQuick.Controls 2.4 as QQC2
import org.kde.plasma.core as PlasmaCore
import org.kde.plasma.extras 2.0 as PlasmaExtras
import org.kde.kirigami 2.20 as Kirigami
import org.kde.ksvg 1.0 as KSvg
import org.kde.plasma.components 3.0 as PC3
import org.kde.plasma.shell.panel 0.1 as Panel
import org.kde.kquickcontrols 2.0
import "panelconfiguration"

ColumnLayout {
    id: dialogRoot
    spacing: Kirigami.Units.largeSpacing * 2

    signal closeContextMenu

    required property QtObject panelConfiguration

    property bool vertical: (panel.location === PlasmaCore.Types.LeftEdge || panel.location === PlasmaCore.Types.RightEdge)

    readonly property int headingLevel: 2

    property Item panelRuler: Ruler {
        id: ruler

        prefix: {
            switch (panel.location) {
            case PlasmaCore.Types.TopEdge:
                return "north"
            case PlasmaCore.Types.LeftEdge:
                return "west"
            case PlasmaCore.Types.RightEdge:
                return "east"
            case PlasmaCore.Types.BottomEdge:
            default:
                return "south"
            }
        }
        Item {
            activeFocusOnTab: true
            onActiveFocusChanged: {
                if (activeFocus && dialogRoot.Window.window && dialogRoot.Window.window.visible) {
                    dialogRoot.Window.window.requestActivate()
                }
            }
        }
        // This item is used to "pass" focus to the main window when we're at the last of the control of the ruler
        Item {
            parent: dialogRoot.parent // Used to not take space in the ColumnLayout
            activeFocusOnTab: true
            onActiveFocusChanged: {
                let window = dialogRoot.Window.window
                if (activeFocus && window && window.visible) {
                    window.requestActivate()
                }
            }
        }
    }

    Connections {
        target: panel
        function onOffsetChanged() {
            ruler.offset = panel.offset
        }
        function onMinimumLengthChanged() {
            ruler.minimumLength = panel.minimumLength
        }
        function onMaximumLengthChanged() {
            ruler.maximumLength = panel.maximumLength
        }
    }

    Component.onCompleted: {
        if (panel.lengthMode === Panel.Global.Custom) {
            Qt.callLater(()=> {
                panelConfiguration.panelRulerView.visible = true
            })
        }
    }


    PlasmaExtras.PlasmoidHeading {
        RowLayout {
            anchors.fill: parent
            spacing: Kirigami.Units.largeSpacing

            Kirigami.Heading {
                Layout.leftMargin: Kirigami.Units.smallSpacing
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Panel Settings")
                textFormat: Text.PlainText
            }

            Item { Layout.fillWidth: true }

            PC3.ToolButton {
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Add Spacer")
                icon.name: "distribute-horizontal-x"

                PC3.ToolTip.text: i18nd("plasma_shell_org.kde.plasma.desktop", "Add spacer widget to the panel")
                PC3.ToolTip.delay: Kirigami.Units.toolTipDelay
                PC3.ToolTip.visible: hovered
                onClicked: configDialog.addPanelSpacer()
            }

            PC3.ToolButton {
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Add Widgets…")
                icon.name: "list-add"

                PC3.ToolTip.text: i18nd("plasma_shell_org.kde.plasma.desktop", "Open the widget selector to drag and drop widgets to the panel")
                PC3.ToolTip.delay: Kirigami.Units.toolTipDelay
                PC3.ToolTip.visible: hovered
                onClicked: {
                    configDialog.close()
                    configDialog.showAddWidgetDialog()
                }
            }

        }
    }

    GridLayout {
        Layout.leftMargin: columnSpacing
        Layout.rightMargin: columnSpacing
        Layout.alignment: Qt.AlignHCenter
        Layout.minimumWidth: (positionRepresentation.implicitWidth + columnSpacing) * columns + columnSpacing
        rowSpacing: dialogRoot.spacing
        columnSpacing: Kirigami.Units.smallSpacing
        rows: 2
        columns: 3
        uniformCellWidths: true

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Heading {
                Layout.alignment: Qt.AlignHCenter
                level: dialogRoot.headingLevel
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Position")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                id: positionRepresentation
                text: (panel.location === PlasmaCore.Types.TopEdge ? i18nd("plasma_shell_org.kde.plasma.desktop", "Top") :
                       panel.location === PlasmaCore.Types.RightEdge ? i18nd("plasma_shell_org.kde.plasma.desktop", "Right") :
                       panel.location === PlasmaCore.Types.LeftEdge ? i18nd("plasma_shell_org.kde.plasma.desktop", "Left") :
                       i18nd("plasma_shell_org.kde.plasma.desktop", "Bottom"))
                Layout.alignment: Qt.AlignHCenter
                alignment: (panel.location === PlasmaCore.Types.TopEdge ? Qt.AlignHCenter | Qt.AlignTop :
                            panel.location === PlasmaCore.Types.RightEdge ? Qt.AlignVCenter | Qt.AlignRight :
                            panel.location === PlasmaCore.Types.LeftEdge ? Qt.AlignVCenter | Qt.AlignLeft :
                            Qt.AlignHCenter | Qt.AlignBottom)
                isVertical: dialogRoot.vertical
                mainIconSource: (panel.location === PlasmaCore.Types.TopEdge ? "arrow-up" :
                                 panel.location === PlasmaCore.Types.RightEdge ? "arrow-right" :
                                 panel.location === PlasmaCore.Types.LeftEdge ? "arrow-left": "arrow-down")
                onClicked: {
                    setPositionButton.checked = !setPositionButton.checked
                    setPositionButton.forceActiveFocus()
                }
            }
            PC3.Button {
                id: setPositionButton
                Layout.minimumHeight: transparencyBox.height
                Layout.minimumWidth: positionRepresentation.width
                Layout.alignment: Qt.AlignHCenter
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Set Position…")
                checkable: true

                function moveTo(newLocation: int, associatedWindow = null) {
                    if (!setPositionButton.checked) {
                        return;
                    }
                    panel.location = newLocation;
                    if (associatedWindow !== null) {
                        panel.screenToFollow = dialogRoot.panelConfiguration.screenFromWindow(associatedWindow);
                    }
                    setPositionButton.checked = false;
                }

                Keys.onLeftPressed: moveTo(PlasmaCore.Types.LeftEdge)
                Keys.onRightPressed: moveTo(PlasmaCore.Types.RightEdge)
                Keys.onUpPressed: moveTo(PlasmaCore.Types.TopEdge)
                Keys.onDownPressed: moveTo(PlasmaCore.Types.BottomEdge)
            }
        }

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Heading {
                Layout.alignment: Qt.AlignHCenter
                level: dialogRoot.headingLevel
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Alignment")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                id: alignmentRepresentation
                Layout.alignment: Qt.AlignHCenter
                mainIconSource: {
                    if (dialogRoot.vertical) {
                        if (alignmentBox.previewIndex === 0) {
                            return "align-vertical-top"
                        } else if (alignmentBox.previewIndex === 1) {
                            return "align-vertical-center"
                        } else {
                            return "align-vertical-bottom"
                        }
                    } else {
                        if (alignmentBox.previewIndex === 0) {
                            return "align-horizontal-left"
                        } else if (alignmentBox.previewIndex === 1) {
                            return "align-horizontal-center"
                        } else {
                            return "align-horizontal-right"
                        }
                    }
                }
                alignment: {
                    let first, second;
                    if (dialogRoot.vertical) {
                        if (alignmentBox.previewIndex === 0) {
                            first = Qt.AlignTop
                        } else if (alignmentBox.previewIndex === 1) {
                            first = Qt.AlignVCenter
                        } else {
                            first = Qt.AlignBottom
                        }
                        if (panel.location === PlasmaCore.Types.LeftEdge) {
                            second = Qt.AlignLeft
                        } else {
                            second = Qt.AlignRight
                        }
                    } else {
                        if (alignmentBox.previewIndex === 0) {
                            first = Qt.AlignLeft
                        } else if (alignmentBox.previewIndex === 1) {
                            first = Qt.AlignHCenter
                        } else {
                            first = Qt.AlignRight
                        }
                        if (panel.location === PlasmaCore.Types.TopEdge) {
                            second = Qt.AlignTop
                        } else {
                            second = Qt.AlignBottom
                        }
                    }
                    return first | second;
                }
                onClicked: alignmentBox.popup.visible = true
                isVertical: dialogRoot.vertical
            }
            PC3.ComboBox {
                id: alignmentBox
                property int previewIndex: highlightedIndex > -1 ? highlightedIndex : currentIndex
                Layout.alignment: Qt.AlignHCenter
                Layout.minimumWidth: alignmentRepresentation.width
                model: [
                    dialogRoot.vertical ? i18nd("plasma_shell_org.kde.plasma.desktop", "Top") : i18nd("plasma_shell_org.kde.plasma.desktop", "Left"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Center"),
                    dialogRoot.vertical ? i18nd("plasma_shell_org.kde.plasma.desktop", "Bottom") : i18nd("plasma_shell_org.kde.plasma.desktop", "Right")
                ]
                currentIndex: (panel.alignment === Qt.AlignLeft ? 0 :
                                panel.alignment === Qt.AlignCenter ? 1 : 2)
                onActivated: (index) => {
                    if (index === 0) {
                        panel.alignment = Qt.AlignLeft
                    } else if (index === 1) {
                        panel.alignment = Qt.AlignCenter
                    } else {
                        panel.alignment = Qt.AlignRight
                    }
                }
            }
        }

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Heading {
                level: dialogRoot.headingLevel
                Layout.alignment: Qt.AlignHCenter
                text: dialogRoot.vertical ? i18nd("plasma_shell_org.kde.plasma.desktop", "Height")
                                          : i18nd("plasma_shell_org.kde.plasma.desktop", "Width")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                id: lengthRepresentation
                Layout.alignment: Qt.AlignHCenter
                mainIconSource: (widthBox.previewIndex === 1 ? "gnumeric-ungroup" :
                                 widthBox.previewIndex === 0 ? (dialogRoot.vertical ? "panel-fit-height" : "panel-fit-width") : "kdenlive-custom-effect")
                isVertical: dialogRoot.vertical
                alignment: positionRepresentation.alignment
                fillAvailable: widthBox.previewIndex === 0
                onClicked: widthBox.popup.visible = true
            }
            PC3.ComboBox {
                id: widthBox
                property int previewIndex: highlightedIndex > -1 ? highlightedIndex : currentIndex
                Layout.alignment: Qt.AlignHCenter
                Layout.minimumWidth: lengthRepresentation.width
                model: [
                    dialogRoot.vertical ? i18nd("plasma_shell_org.kde.plasma.desktop", "Fill height") : i18nd("plasma_shell_org.kde.plasma.desktop", "Fill width"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Fit content"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Custom")
                ]
                currentIndex: (panel.lengthMode === Panel.Global.FillAvailable ? 0 :
                                panel.lengthMode === Panel.Global.FitContent ? 1 : 2)
                onActivated: (index) => {
                    if (index === 0) {
                        panel.lengthMode = Panel.Global.FillAvailable
                        panelConfiguration.panelRulerView.visible = false
                    } else if (index === 1) {
                        panel.lengthMode = Panel.Global.FitContent
                        panelConfiguration.panelRulerView.visible = false
                    } else {
                        panel.lengthMode = Panel.Global.Custom
                        panelConfiguration.panelRulerView.visible = true
                    }
                }

            }
        }

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Heading {
                Layout.alignment: Qt.AlignTop | Qt.AlignHCenter
                level: dialogRoot.headingLevel
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Visibility")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                id: visibilityRepresentation
                Layout.alignment: Qt.AlignHCenter
                sunkenPanel: autoHideBox.previewIndex !== 0
                onClicked: autoHideBox.popup.visible = true
            }
            PC3.ComboBox {
                id: autoHideBox
                property int previewIndex: popup.visible ? highlightedIndex : currentIndex
                model: [
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Always visible"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Auto hide"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Dodge windows"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Windows Go Below"),
                ]
                Layout.alignment: Qt.AlignHCenter
                Layout.minimumWidth: visibilityRepresentation.width
                currentIndex: {
                    switch (panel.visibilityMode) {
                        case Panel.Global.AutoHide:
                            return 1;
                        case Panel.Global.DodgeWindows:
                            return 2;
                        case Panel.Global.WindowsGoBelow:
                            return 3;
                        case Panel.Global.NormalPanel:
                        default:
                            return 0;
                    }
                }
                onActivated: (index) => {
                    switch (index) {
                        case 1:
                            panel.visibilityMode = Panel.Global.AutoHide;
                            break;
                        case 2:
                            panel.visibilityMode = Panel.Global.DodgeWindows;
                            break;
                        case 3:
                            panel.visibilityMode = Panel.Global.WindowsGoBelow;
                            break;
                        case 0:
                        default:
                            panel.visibilityMode = Panel.Global.NormalPanel;
                            break;
                    }
                }
            }
        }

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Heading {
                Layout.alignment: Qt.AlignTop | Qt.AlignHCenter
                level: dialogRoot.headingLevel
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Opacity")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                id: opacityRepresentation
                Layout.alignment: Qt.AlignHCenter
                adaptivePanel: transparencyBox.previewIndex === 0
                translucentPanel: transparencyBox.previewIndex === 2
                onClicked: transparencyBox.popup.visible = true
            }
            PC3.ComboBox {
                id: transparencyBox
                readonly property int previewIndex: popup.visible ? highlightedIndex : currentIndex
                model: [
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Adaptive"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Opaque"),
                    i18nd("plasma_shell_org.kde.plasma.desktop", "Translucent")
                ]
                Layout.alignment: Qt.AlignHCenter
                Layout.minimumWidth: opacityRepresentation.width
                currentIndex: (panel.opacityMode === Panel.Global.Adaptive ? 0 :
                                panel.opacityMode === Panel.Global.Opaque ? 1 : 2)
                onActivated: (index) => {
                    if (index === 0) {
                        panel.opacityMode = Panel.Global.Adaptive
                    } else if (index === 1) {
                        panel.opacityMode = Panel.Global.Opaque
                    } else {
                        panel.opacityMode = Panel.Global.Translucent
                    }
                }
            }
        }

        ColumnLayout {
            Layout.alignment: Qt.AlignHCenter
            spacing: Kirigami.Units.mediumSpacing
            Kirigami.Action {
                id: floatingAction
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Floating")
                checkable: true
                checked: panel.floating
                onToggled: source => {
                    panel.floating = checked;
                }
            }
            Kirigami.Heading {
                level: dialogRoot.headingLevel
                Layout.alignment: Qt.AlignTop | Qt.AlignHCenter
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Style")
                textFormat: Text.PlainText
            }
            PanelRepresentation {
                Layout.alignment: Qt.AlignHCenter
                floatingGap: Kirigami.Units.smallSpacing * floatingSwitch.checked
                onClicked: floatingAction.toggle(this)
            }
            PC3.Switch {
                id: floatingSwitch
                Layout.alignment: Qt.AlignHCenter
                Layout.minimumHeight: transparencyBox.height
                action: floatingAction
            }
        }
    }

    Instantiator {
        active: setPositionButton.checked
        asynchronous: true
        model: Application.screens
        Item {
            width: 0
            height: 0
            required property var modelData

            component Indicator : PlasmaCore.Dialog {
                id: root
                property string iconSource
                property var onClickedLocation
                flags: Qt.WindowStaysOnTopHint | Qt.WindowDoesNotAcceptFocus | Qt.BypassWindowManagerHint
                location: PlasmaCore.Types.Floating
                visible: setPositionButton.checked && (panel.location !== onClickedLocation || modelData.name !== panel.screenToFollow.name)

                x: modelData.virtualX + Kirigami.Units.largeSpacing
                y: modelData.virtualY + modelData.height / 2 - mainItem.height / 2 - margins.top

                mainItem: PC3.ToolButton {
                    width: Kirigami.Units.iconSizes.enormous
                    height: Kirigami.Units.iconSizes.enormous
                    icon.name: root.iconSource

                    onClicked: setPositionButton.moveTo(root.onClickedLocation, Window.window)
                }
            }

            Indicator {
                x: modelData.virtualX + Kirigami.Units.largeSpacing
                y: modelData.virtualY + modelData.height / 2 - mainItem.height / 2 - margins.top
                iconSource: "arrow-left"
                onClickedLocation: PlasmaCore.Types.LeftEdge
            }
            Indicator {
                x: modelData.virtualX + modelData.width - Kirigami.Units.largeSpacing - margins.left - margins.right - mainItem.width
                y: modelData.virtualY + modelData.height / 2 - mainItem.height / 2 - margins.top
                iconSource: "arrow-right"
                onClickedLocation: PlasmaCore.Types.RightEdge
            }
            Indicator {
                x: modelData.virtualX + modelData.width / 2 - mainItem.width / 2 - margins.left
                y: modelData.virtualY + Kirigami.Units.largeSpacing
                iconSource: "arrow-up"
                onClickedLocation: PlasmaCore.Types.TopEdge
            }
            Indicator {
                x: modelData.virtualX + modelData.width / 2 - mainItem.width / 2 - margins.left
                y: modelData.virtualY + modelData.height - mainItem.height - margins.top - margins.bottom - Kirigami.Units.largeSpacing
                iconSource: "arrow-down"
                onClickedLocation: PlasmaCore.Types.BottomEdge
            }
        }
    }

    GridLayout {
        Layout.alignment: Qt.AlignHCenter
        rowSpacing: Kirigami.Units.largeSpacing
        columnSpacing: Kirigami.Units.largeSpacing
        rows: 2
        columns: 2

        PC3.Label {
            id: spinBoxLabel
            Layout.alignment: Qt.AlignRight
            wrapMode: Text.Wrap

            text: panel.location === PlasmaCore.Types.LeftEdge || panel.location === PlasmaCore.Types.RightEdge
                ? i18nd("plasma_shell_org.kde.plasma.desktop", "Panel Width:")
                : i18nd("plasma_shell_org.kde.plasma.desktop", "Panel Height:")
            textFormat: Text.PlainText
        }
        PC3.SpinBox {
            id: spinBox

            editable: true
            focus: !Kirigami.InputMethod.willShowOnActive
            from: Math.max(20, panel.minThickness) // below this size, the panel is mostly unusable
            to: panel.location === PlasmaCore.Types.LeftEdge || panel.location === PlasmaCore.Types.RightEdge
                ? panel.screenToFollow.geometry.width / 2
                : panel.screenToFollow.geometry.height / 2

            stepSize: 2

            value: panel.thickness
            onValueModified: {
                panel.thickness = value
            }
        }

        PC3.Label {
            Layout.alignment: Qt.AlignRight
            text: i18nd("plasma_shell_org.kde.plasma.desktop", "Focus shortcut:")
            textFormat: Text.PlainText
            visible: panel.adaptiveOpacityEnabled

            MouseArea {
                id: mouseArea
                anchors.fill: parent
                hoverEnabled: true
            }

            PC3.ToolTip {
                text: i18nd("plasma_shell_org.kde.plasma.desktop", "Press this keyboard shortcut to move focus to the Panel")
                visible: mouseArea.containsMouse
            }
        }
        KeySequenceItem {
            id: button
            keySequence: plasmoid.globalShortcut
            onCaptureFinished: {
                plasmoid.globalShortcut = button.keySequence
            }
        }
    }

    PlasmaExtras.PlasmoidHeading {
        position: PlasmaExtras.PlasmoidHeading.Footer
        Layout.topMargin: Kirigami.Units.smallSpacing
        topPadding: Kirigami.Units.smallSpacing * 2
        leftPadding: Kirigami.Units.smallSpacing
        rightPadding: Kirigami.Units.smallSpacing
        bottomPadding: Kirigami.Units.smallSpacing

        Layout.fillWidth: true
        RowLayout {
            anchors.verticalCenter: parent.verticalCenter
            anchors.left: parent.left
            anchors.right: parent.right
            spacing: Kirigami.Units.largeSpacing

            PC3.ToolButton {
                text: i18ndc("plasma_shell_org.kde.plasma.desktop", "@action:button Delete the panel", "Delete Panel")
                icon.name: "delete"

                PC3.ToolTip.text: i18nd("plasma_shell_org.kde.plasma.desktop", "Remove this panel; this action is undo-able")
                PC3.ToolTip.delay: Kirigami.Units.toolTipDelay
                PC3.ToolTip.visible: hovered

                onClicked: plasmoid.internalAction("remove").trigger()
            }


            Item {Layout.fillWidth: true}

            PC3.ToolButton {
                text: i18ndc("plasma_shell_org.kde.plasma.desktop", "@action:button Done configuring the panel", "Done")
                icon.name: "dialog-ok-symbolic"

                PC3.ToolTip.text: i18nd("plasma_shell_org.kde.plasma.desktop", "Close Panel Settings window and exit Edit Mode")
                PC3.ToolTip.delay: Kirigami.Units.toolTipDelay
                PC3.ToolTip.visible: hovered

                onClicked: plasmoid.containment.corona.editMode = false
            }
        }
    }
    // This item is used to "pass" focus to the ruler with tab when we're at the last of the control of this window
    Item {
        parent: dialogRoot.parent // Used to not take space in the ColumnLayout
        activeFocusOnTab: true
        onActiveFocusChanged: {
            let window = ruler.Window.window
            if (activeFocus && window && window.visible) {
                window.requestActivate()
            }
        }
    }
}