/*
 *  SPDX-FileCopyrightText: 2021 Devin Lin <devin@kde.org>
 *  SPDX-FileCopyrightText: 2016 Kai Uwe Broulik <kde@privat.broulik.de>
 *
 *  SPDX-License-Identifier: LGPL-2.0-or-later
 */

import QtQuick 2.15
import QtQuick.Layouts 1.15
import QtQuick.Controls 2.15 as QQC2

import org.kde.kirigami 2.12 as Kirigami

import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.components 3.0 as PlasmaComponents3
import org.kde.plasma.extras 2.0 as PlasmaExtras

import "../../components" as Components

/**
 * Embeddable component that provides MPRIS control.
 */
Item {
    id: root
    visible: mpris2Source.hasPlayer
    
    readonly property real padding: Kirigami.Units.largeSpacing + Kirigami.Units.smallSpacing
    readonly property real contentHeight: PlasmaCore.Units.gridUnit * 2 + PlasmaCore.Units.smallSpacing
    implicitHeight: visible ? padding * 2 + contentHeight : 0
    
    MediaControlsSource {
        id: mpris2Source
    }
    
    // page indicator
    RowLayout {
        z: 1
        visible: view.count > 1
        spacing: Kirigami.Units.smallSpacing
        anchors.bottomMargin: Kirigami.Units.smallSpacing * 2
        anchors.bottom: view.bottom
        anchors.horizontalCenter: parent.horizontalCenter
        
        Repeater {
            model: view.count
            delegate: Rectangle {
                width: Kirigami.Units.smallSpacing
                height: Kirigami.Units.smallSpacing
                radius: width / 2
                color: Qt.rgba(255, 255, 255, view.currentIndex == model.index ? 1 : 0.5)
            }
        }
    }
    
    // list of app media widgets
    QQC2.SwipeView {
        id: view
        clip: true
        
        anchors.fill: parent
        
        Repeater {
            model: mpris2Source.mprisSourcesModel
            
            delegate: Components.BaseItem {
                id: playerItem
                
                property string source: modelData.source
                
                padding: root.padding
                implicitHeight: root.contentHeight + root.padding * 2
                implicitWidth: root.width
                
                background: BlurredBackground {
                    imageSource: mpris2Source.albumArt(playerItem.source)
                }
                
                contentItem: PlasmaCore.ColorScope {
                    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
                    width: playerItem.width - playerItem.leftPadding - playerItem.rightPadding
                    
                    RowLayout {
                        id: controlsRow
                        width: parent.width
                        height: parent.height
                        spacing: 0

                        enabled: mpris2Source.canControl(playerItem.source)

                        Image {
                            id: albumArt
                            Layout.preferredWidth: height
                            Layout.fillHeight: true
                            asynchronous: true
                            fillMode: Image.PreserveAspectFit
                            source: mpris2Source.albumArt(playerItem.source)
                            sourceSize.height: height
                            visible: status === Image.Loading || status === Image.Ready
                        }

                        ColumnLayout {
                            Layout.leftMargin: albumArt.visible ? Kirigami.Units.largeSpacing : 0
                            Layout.fillWidth: true
                            spacing: Kirigami.Units.smallSpacing

                            QQC2.Label {
                                Layout.fillWidth: true
                                wrapMode: Text.NoWrap
                                elide: Text.ElideRight
                                text: mpris2Source.track(playerItem.source) || i18n("No media playing")
                                textFormat: Text.PlainText
                                font.pointSize: PlasmaCore.Theme.defaultFont.pointSize
                                maximumLineCount: 1
                                color: "white"
                            }

                            QQC2.Label {
                                Layout.fillWidth: true
                                wrapMode: Text.NoWrap
                                elide: Text.ElideRight
                                // if no artist is given, show player name instead
                                text: mpris2Source.artist(playerItem.source) || modelData.application || ""
                                textFormat: Text.PlainText
                                font.pointSize: PlasmaCore.Theme.smallestFont.pointSize
                                maximumLineCount: 1
                                opacity: 0.9
                                color: "white"
                            }
                        }

                        PlasmaComponents3.ToolButton {
                            Layout.fillHeight: true
                            Layout.preferredWidth: height
                            
                            enabled: mpris2Source.canGoBack(playerItem.source)
                            icon.name: LayoutMirroring.enabled ? "media-skip-forward" : "media-skip-backward"
                            icon.width: PlasmaCore.Units.iconSizes.small
                            icon.height: PlasmaCore.Units.iconSizes.small
                            onClicked: mpris2Source.goPrevious(playerItem.source)
                            visible: mpris2Source.canGoBack(playerItem.source) || mpris2Source.canGoNext(playerItem.source)
                            Accessible.name: i18nd("plasma_lookandfeel_org.kde.lookandfeel", "Previous track")
                        }

                        PlasmaComponents3.ToolButton {
                            Layout.fillHeight: true
                            Layout.preferredWidth: height
                            
                            icon.name: mpris2Source.isPlaying(playerItem.source) ? "media-playback-pause" : "media-playback-start"
                            icon.width: PlasmaCore.Units.iconSizes.small
                            icon.height: PlasmaCore.Units.iconSizes.small
                            onClicked: mpris2Source.playPause(playerItem.source)
                            Accessible.name: i18nd("plasma_lookandfeel_org.kde.lookandfeel", "Play or Pause media")
                        }

                        PlasmaComponents3.ToolButton {
                            Layout.fillHeight: true
                            Layout.preferredWidth: height
                            
                            enabled: mpris2Source.canGoBack(playerItem.source)
                            icon.name: LayoutMirroring.enabled ? "media-skip-backward" : "media-skip-forward"
                            icon.width: PlasmaCore.Units.iconSizes.small
                            icon.height: PlasmaCore.Units.iconSizes.small
                            onClicked: mpris2Source.goNext(playerItem.source)
                            visible: mpris2Source.canGoBack(playerItem.source) || mpris2Source.canGoNext(playerItem.source)
                            Accessible.name: i18nd("plasma_lookandfeel_org.kde.lookandfeel", "Next track")
                        }
                    }
                }
            }
        }
    }
}