// SPDX-FileCopyrightText: 2023 Devin Lin <devin@kde.org>
// SPDX-License-Identifier: LGPL-2.0-or-later

import QtQuick
import QtQuick.Window
import QtQuick.Layouts
import QtQuick.Controls as QQC2

import org.kde.kirigami 2.20 as Kirigami

import org.kde.plasma.components 3.0 as PC3
import org.kde.plasma.private.mobileshell as MobileShell
import org.kde.private.mobile.homescreen.folio 1.0 as Folio

import '../delegate'

Item {
    id: root
    property Folio.HomeScreen folio

    property var homeScreen
    property real settingsModeHomeScreenScale

    readonly property bool homeScreenInteractive: !appletListViewer.open

    property real bottomMargin: 0
    property real leftMargin: 0
    property real rightMargin: 0

    Connections {
        target: folio.HomeScreenState

        // Close applet viewer when settings view closes
        function onViewStateChanged() {
            if (folio.HomeScreenState.viewState !== Folio.HomeScreenState.SettingsView) {
                appletListViewer.requestClose();
            }
        }
    }

    MouseArea {
        id: closeSettings

        onClicked: {
            folio.HomeScreenState.closeSettingsView();
        }
    }

    Item {
        id: settingsBar

        Kirigami.Theme.inherit: false
        Kirigami.Theme.colorSet: Kirigami.Theme.Complementary

        anchors.bottomMargin: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Bottom ? Kirigami.Units.largeSpacing + Math.round(root.bottomMargin / 2) : 0
        anchors.rightMargin: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Right ? Kirigami.Units.largeSpacing + Math.round(root.rightMargin / 2) : 0
        anchors.leftMargin: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Left ? Kirigami.Units.largeSpacing + Math.round(root.leftMargin / 2) : 0

        GridLayout {
            id: settingsOptions
            flow: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Bottom ? GridLayout.LeftToRight : GridLayout.TopToBottom

            anchors.centerIn: parent

            PC3.ToolButton {
                opacity: 0.9
                implicitHeight: Kirigami.Units.gridUnit * 4
                implicitWidth: Kirigami.Units.gridUnit * 5

                contentItem: ColumnLayout {
                    spacing: Kirigami.Units.largeSpacing

                    Kirigami.Icon {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignBottom
                        implicitWidth: Kirigami.Units.iconSizes.smallMedium
                        implicitHeight: Kirigami.Units.iconSizes.smallMedium
                        source: 'edit-image'
                    }

                    QQC2.Label {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignTop
                        text: i18n('Wallpapers')
                        font.bold: true
                    }
                }

                onClicked: {
                    homeScreen.wallpaperSelectorTriggered();
                    folio.HomeScreenState.closeSettingsView();
                }
            }

            PC3.ToolButton {
                opacity: 0.9
                implicitHeight: Kirigami.Units.gridUnit * 4
                implicitWidth: Kirigami.Units.gridUnit * 5

                contentItem: ColumnLayout {
                    spacing: Kirigami.Units.largeSpacing

                    Kirigami.Icon {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignBottom
                        implicitWidth: Kirigami.Units.iconSizes.smallMedium
                        implicitHeight: Kirigami.Units.iconSizes.smallMedium
                        source: 'settings-configure'
                    }

                    QQC2.Label {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignTop
                        text: i18n('Settings')
                        font.bold: true
                    }
                }

                onClicked: {
                    // ensure that if the window is already opened, it gets raised to the top
                    settingsWindow.hide();
                    settingsWindow.showMaximized();
                }
            }

            PC3.ToolButton {
                opacity: 0.9
                implicitHeight: Kirigami.Units.gridUnit * 4
                implicitWidth: Kirigami.Units.gridUnit * 5

                contentItem: ColumnLayout {
                    spacing: Kirigami.Units.largeSpacing

                    Kirigami.Icon {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignBottom
                        implicitWidth: Kirigami.Units.iconSizes.smallMedium
                        implicitHeight: Kirigami.Units.iconSizes.smallMedium
                        source: 'widget-alternatives'
                    }

                    QQC2.Label {
                        Layout.alignment: Qt.AlignHCenter | Qt.AlignTop
                        text: i18n('Widgets')
                        font.bold: true
                    }
                }

                onClicked: {
                    appletListViewer.open = true;
                }
            }
        }
    }

    states: [
        State {
            name: "bottom"
            when: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Bottom
            PropertyChanges {
                target: settingsBar
                height: root.height * (1 - root.settingsModeHomeScreenScale)
            }
            AnchorChanges {
                target: settingsBar
                anchors.top: undefined
                anchors.bottom: parent.bottom
                anchors.left: parent.left
                anchors.right: parent.right
            }
            AnchorChanges {
                target: closeSettings
                anchors.top: parent.top
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.bottom: settingsBar.top
            }
        }, State {
            name: "left"
            when: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Left
            PropertyChanges {
                target: settingsBar
                width: root.width * (1 - root.settingsModeHomeScreenScale)
            }
            AnchorChanges {
                target: settingsBar
                anchors.top: parent.top
                anchors.bottom: parent.bottom
                anchors.left: parent.left
                anchors.right: undefined
            }
            AnchorChanges {
                target: closeSettings
                anchors.top: parent.top
                anchors.left: settingsBar.right
                anchors.right: parent.right
                anchors.bottom: parent.bottom
            }
        }, State {
            name: "right"
            when: folio.HomeScreenState.favouritesBarLocation === Folio.HomeScreenState.Right
            PropertyChanges {
                target: settingsBar
                width: root.width * (1 - root.settingsModeHomeScreenScale)
            }
            AnchorChanges {
                target: settingsBar
                anchors.top: parent.top
                anchors.bottom: parent.bottom
                anchors.left: undefined
                anchors.right: parent.right
            }
            AnchorChanges {
                target: closeSettings
                anchors.top: parent.top
                anchors.left: parent.left
                anchors.right: settingsBar.left
                anchors.bottom: parent.bottom
            }
        }
    ]

    AppletListViewer {
        id: appletListViewer
        folio: root.folio
        width: parent.width
        height: parent.height

        property bool open: false
        onRequestClose: open = false

        opacity: open ? 1 : 0

        // move the settings out of the way if it is not visible
        // NOTE: we do this instead of setting visible to false, because
        //       it doesn't mess with widget drag and drop
        y: (opacity === 0) ? appletListViewer.height : 0

        homeScreen: root.homeScreen

        Behavior on opacity {
            NumberAnimation { duration: Kirigami.Units.shortDuration }
        }
    }

    SettingsWindow {
        id: settingsWindow
        folio: root.folio
        visible: false

        onRequestConfigureMenu: {
            homeScreen.openConfigure()
        }
    }
}