// SPDX-FileCopyrightText: 2021-2024 Devin Lin <devin@kde.org>
// SPDX-License-Identifier: LGPL-2.0-or-later

import QtQuick
import QtQuick.Controls as QQC2
import QtQuick.Layouts
import QtQuick.Shapes 1.8
import QtQuick.Window

import org.kde.kirigami as Kirigami

import org.kde.plasma.core as PlasmaCore
import org.kde.plasma.components 3.0 as PlasmaComponents
import org.kde.plasma.private.mobileshell as MobileShell
import org.kde.plasma.private.mobileshell.shellsettingsplugin as ShellSettings
import org.kde.plasma.private.mobileshell.quicksettingsplugin as QS

/**
 * Root element that contains all the ActionDrawer's contents, and is anchored to the screen.
 */
Item {
    id: root

    required property var actionDrawer

    property alias quickSettings: quickSettingsPanel.quickSettings
    property alias statusBar: quickSettingsPanel.statusBar

    readonly property real minimizedQuickSettingsOffset: height
    readonly property real maximizedQuickSettingsOffset: height
    readonly property bool isConvergence: ShellSettings.Settings.convergenceModeEnabled
    readonly property real convergenceFrameThickness: MobileShell.Constants.convergenceWorkspaceFrameThickness
    readonly property real convergenceSurfaceTopInset: MobileShell.Constants.topPanelHeight + convergenceFrameThickness
    readonly property real convergenceSurfaceBottomInset: MobileShell.Constants.convergenceDockHeight + convergenceFrameThickness
    readonly property real convergenceSurfaceSideInset: 0
    readonly property real convergenceSurfaceWidth: Math.max(0, width - convergenceSurfaceSideInset * 2)
    readonly property real convergenceSurfaceHeight: Math.max(0, height - convergenceSurfaceTopInset - convergenceSurfaceBottomInset)
    readonly property bool isOnLargeScreen: width > quickSettingsPanel.width * 2.5
    readonly property real minWidthHeight: Math.min(root.width, root.height)
    readonly property real quickSettingsPanelLeft: quickSettingsPanel.x
    readonly property real opacityValue: Math.max(0, Math.min(1, actionDrawer.offsetResistance / root.minimizedQuickSettingsOffset))
    readonly property double brightnessPressedValue: quickSettings.brightnessPressedValue

    Kirigami.Theme.colorSet: Kirigami.Theme.View
    Kirigami.Theme.inherit: false

    MouseArea {
        anchors.fill: parent

        // dismiss drawer when background is clicked
        onClicked: root.actionDrawer.close();

        Shape {
            id: actionDrawerSurface
            x: quickSettingsPanel.x - cornerRadius
            y: quickSettingsPanel.y
            width: bodyWidth + cornerRadius
            height: quickSettingsPanel.height
            opacity: root.isConvergence ? quickSettingsPanel.opacity * root.brightnessPressedValue : 0
            visible: opacity > 0 && bodyWidth > 0 && height > 0
            z: 0
            preferredRendererType: Shape.CurveRenderer
            asynchronous: true
            enabled: false

            readonly property real bodyWidth: quickSettingsPanel.width
            readonly property real cornerRadius: Math.min(MobileShell.Constants.convergenceWorkspaceFrameRadius,
                                                          Math.max(0.01, Math.min(bodyWidth, height) / 2))

            Kirigami.Theme.inherit: false
            Kirigami.Theme.colorSet: Kirigami.Theme.Window

            ShapePath {
                id: actionDrawerSurfacePath
                readonly property real cornerRadius: actionDrawerSurface.cornerRadius

                fillColor: MobileShell.SurfaceColors.accentSurface(Kirigami.Theme.backgroundColor, 0.32, 0.18)
                strokeWidth: 0
                startX: actionDrawerSurface.width
                startY: 0

                PathLine { x: 0; y: 0 }
                PathArc { x: actionDrawerSurfacePath.cornerRadius; y: actionDrawerSurfacePath.cornerRadius; radiusX: actionDrawerSurfacePath.cornerRadius; radiusY: actionDrawerSurfacePath.cornerRadius; direction: PathArc.Clockwise }
                PathLine { x: actionDrawerSurfacePath.cornerRadius; y: actionDrawerSurface.height - actionDrawerSurfacePath.cornerRadius }
                PathArc { x: 0; y: actionDrawerSurface.height; radiusX: actionDrawerSurfacePath.cornerRadius; radiusY: actionDrawerSurfacePath.cornerRadius; direction: PathArc.Clockwise }
                PathLine { x: actionDrawerSurface.width; y: actionDrawerSurface.height }
                PathLine { x: actionDrawerSurface.width; y: 0 }
            }
        }

        // right sidebar
        MobileShell.QuickSettingsPanel {
            id: quickSettingsPanel
            z: 1
            height: Math.min(quickSettingsPanel.contentImplicitHeight + quickSettingsPanel.topPadding + quickSettingsPanel.bottomPadding, quickSettingsPanel.availableHeight)
            width: Math.min(intendedWidth, quickSettingsPanel.availableWidth)

            readonly property real columnWidth: 6 * Kirigami.Units.gridUnit
            readonly property real availableWidth: root.isConvergence ? root.convergenceSurfaceWidth : intendedWidth
            readonly property real availableHeight: root.isConvergence ? root.convergenceSurfaceHeight : root.height
            // In convergence mode, use up to 45% of screen width so more
            // tiles are visible without pagination.
            readonly property int convergenceColumns: Math.min(6, Math.floor(root.width * 0.45 / columnWidth))
            readonly property int effectiveColumns: root.isConvergence
                ? Math.max(ShellSettings.Settings.quickSettingsColumns, convergenceColumns)
                : ShellSettings.Settings.quickSettingsColumns
            readonly property real intendedWidth: (columnWidth * effectiveColumns) + Kirigami.Units.gridUnit

            readonly property bool isConvergence: root.isConvergence
            property real offsetRatio: (quickSettingsPanel.height + restingTopMargin) / root.height
            readonly property real restingTopMargin: root.isConvergence ? root.convergenceSurfaceTopInset : 0
            anchors.topMargin: isConvergence ? restingTopMargin : Math.min(root.actionDrawer.offsetResistance * offsetRatio - quickSettingsPanel.height, 0)
            anchors.top: parent.top
            anchors.right: parent.right
            anchors.rightMargin: isConvergence ? root.convergenceSurfaceSideInset : 0
            opacity: isConvergence ? Math.max(0, Math.min(1, root.actionDrawer.offset / root.minimizedQuickSettingsOffset)) : 1

            actionDrawer: root.actionDrawer
            fullScreenHeight: quickSettingsPanel.availableHeight
        }
    }
}