/*
 * SPDX-FileCopyrightText: 2019 Nicolas Fella <nicolas.fella@gmx.de>
 * SPDX-FileCopyrightText: 2021 Devin Lin <espidev@gmail.com>
 * 
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

import QtQuick 2.12
import QtQuick.Controls 1.1
import QtQuick.Layouts 1.1
import QtGraphicalEffects 1.12

import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.workspace.keyboardlayout 1.0
import org.kde.notificationmanager 1.1 as Notifications
import org.kde.plasma.private.mobileshell 1.0 as MobileShell

PlasmaCore.ColorScope {
    id: root

    property string password
    
    property bool isWidescreen: root.height < root.width * 0.75
    property bool notificationsShown: false

    property bool is24HourTime: Qt.locale().timeFormat(Locale.ShortFormat).toLowerCase().indexOf("ap") === -1
    
    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
    anchors.fill: parent
    
    function isPinDrawerOpen() {
        return flickable.openFactor >= 1; 
    }

    function askPassword() {
        flickable.goToOpenPosition();
    }
    
    Notifications.WatchedNotificationsModel {
        id: notifModel
    }
    
    // blur background once keypad is open
    FastBlur {
        id: blur
        cached: true
        anchors.fill: parent
        source: wallpaper
        radius: 50
        opacity: 0
        
        property bool doBlur: notificationsShown || isPinDrawerOpen() // only blur once animation finished for performance
        Behavior on doBlur {
            NumberAnimation {
                target: blur
                property: "opacity"
                duration: 1000
                to: blur.doBlur ? 0 : 1
                easing.type: Easing.InOutQuad
            }
        }
    }

    FlickContainer {
        id: flickable
        anchors.fill: parent
        
        property real openFactor: position / keypadHeight
        
        Component.onCompleted: flickable.goToClosePosition()
        
        onPositionChanged: {
            if (position > keypadHeight) {
                position = keypadHeight;
            } else if (position < 0) {
                position = 0;
            }
        }
        
        keypadHeight: PlasmaCore.Units.gridUnit * 20
        
        Item {
            width: flickable.width
            height: flickable.height
            y: flickable.contentY // effectively anchored to the screen
            
            // header bar
            Loader {
                id: headerBar
                asynchronous: true
                anchors {
                    top: parent.top
                    left: parent.left
                    right: parent.right
                }
                height: PlasmaCore.Units.gridUnit * 1.25
                opacity: 1 - flickable.openFactor
                sourceComponent: MobileShell.StatusBar {
                    id: statusBar
                    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
                    backgroundColor: "transparent"
                    
                    showSecondRow: false
                    showDropShadow: true
                    showTime: false
                    disableSystemTray: true // HACK: prevent SIGABRT
                }
            }
            
            // phone lockscreen component
            Loader {
                id: phoneComponent
                visible: !isWidescreen
                active: visible
                opacity: 1 - flickable.openFactor
                
                asynchronous: true
                anchors {
                    top: parent.top
                    bottom: scrollUpIcon.top
                    left: parent.left
                    right: parent.right
                    topMargin: item && !root.notificationsShown ? Math.round(root.height / 2 - (item.implicitHeight / 2 + PlasmaCore.Units.gridUnit * 2)) : PlasmaCore.Units.gridUnit * 5
                    bottomMargin: PlasmaCore.Units.gridUnit
                }
                
                Behavior on anchors.topMargin {
                    NumberAnimation {
                        duration: loadTimer.running ? 0 : PlasmaCore.Units.longDuration
                        easing.type: Easing.InOutQuad
                    }
                }
                
                // avoid topMargin animation when item is being loaded
                onLoaded: loadTimer.restart();
                Timer {
                    id: loadTimer
                    interval: PlasmaCore.Units.longDuration
                }
                
                // move while swiping up
                transform: Translate { y: Math.round((1 - phoneComponent.opacity) * (-root.height / 6)) }
                
                sourceComponent: ColumnLayout {
                    id: phoneClockComponent
                    spacing: 0
                    
                    Clock {
                        id: phoneClock
                        alignment: Qt.AlignHCenter
                        Layout.bottomMargin: PlasmaCore.Units.gridUnit * 2 // keep spacing even if media controls are gone
                    }
                    
                    MobileShell.MediaControlsWidget {
                        Layout.alignment: Qt.AlignHCenter
                        Layout.fillWidth: true
                        Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                        Layout.leftMargin: PlasmaCore.Units.gridUnit
                        Layout.rightMargin: PlasmaCore.Units.gridUnit
                    }
                    
                    NotificationsComponent {
                        Layout.fillHeight: true
                        Layout.fillWidth: true
                        Layout.maximumWidth: PlasmaCore.Units.gridUnit * (25 + 2) // clip margins 
                        topMargin: PlasmaCore.Units.gridUnit
                        leftMargin: PlasmaCore.Units.gridUnit
                        rightMargin: PlasmaCore.Units.gridUnit
                    }
                }
            }
            
            // tablet lockscreen component
            Loader {
                id: tabletComponent
                visible: isWidescreen
                active: visible
                opacity: 1 - flickable.openFactor
                
                asynchronous: true
                anchors.top: headerBar.bottom
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.bottom: scrollUpIcon.top
                
                // move while swiping up
                transform: Translate { y: Math.round((1 - phoneComponent.opacity) * (-root.height / 6)) }
                
                sourceComponent: Item {
                    Item {
                        id: tabletClockComponent
                        width: parent.width / 2   
                        anchors {
                            top: parent.top
                            bottom: parent.bottom
                            left: parent.left
                            leftMargin: PlasmaCore.Units.gridUnit * 3
                        }
                        
                        ColumnLayout {
                            id: tabletLayout
                            anchors.centerIn: parent
                            spacing: PlasmaCore.Units.gridUnit
                            
                            Clock {
                                id: tabletClock
                                alignment: Qt.AlignLeft
                                Layout.fillWidth: true
                                Layout.minimumWidth: PlasmaCore.Units.gridUnit * 20
                            }
                            MobileShell.MediaControlsWidget {
                                Layout.alignment: Qt.AlignLeft
                                Layout.fillWidth: true
                                Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                            }
                        }
                    }
                        
                    // tablet notifications list
                    ColumnLayout {
                        id: tabletNotificationsList
                        anchors {
                            top: parent.top
                            bottom: parent.bottom
                            left: tabletClockComponent.right
                            right: parent.right
                            rightMargin: PlasmaCore.Units.gridUnit
                        }
                        
                        NotificationsComponent {
                            Layout.alignment: Qt.AlignVCenter | Qt.AlignHCenter
                            Layout.fillWidth: true
                            Layout.fillHeight: true
                            Layout.topMargin: PlasmaCore.Units.gridUnit * 2
                            Layout.bottomMargin: PlasmaCore.Units.gridUnit
                            Layout.minimumWidth: PlasmaCore.Units.gridUnit * 15
                            Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                            leftMargin: PlasmaCore.Units.gridUnit
                            rightMargin: PlasmaCore.Units.gridUnit
                            bottomMargin: PlasmaCore.Units.gridUnit
                            topMargin: PlasmaCore.Units.gridUnit
                        }
                    }
                }
            }
            
            // scroll up icon
            PlasmaCore.IconItem {
                id: scrollUpIcon
                anchors.bottom: parent.bottom
                anchors.bottomMargin: PlasmaCore.Units.gridUnit + flickable.position * 0.5
                anchors.horizontalCenter: parent.horizontalCenter
                implicitWidth: PlasmaCore.Units.iconSizes.smallMedium
                implicitHeight: PlasmaCore.Units.iconSizes.smallMedium 
                opacity: 1 - flickable.openFactor
                
                colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
                source: "arrow-up"
            }
            
            // password keypad
            ColumnLayout {
                id: passwordLayout
                anchors.bottom: parent.bottom
                transform: Translate { y: flickable.keypadHeight - flickable.position }
                
                width: parent.width
                spacing: PlasmaCore.Units.gridUnit
                
                // scroll down icon
                PlasmaCore.IconItem {
                    Layout.alignment: Qt.AlignHCenter
                    implicitWidth: PlasmaCore.Units.iconSizes.smallMedium
                    implicitHeight: PlasmaCore.Units.iconSizes.smallMedium
                    colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
                    source: "arrow-down"
                    opacity: Math.sin((Math.PI / 2) * flickable.openFactor + 1.5 * Math.PI) + 1
                }

                Keypad {
                    id: keypad
                    focus: true
                    swipeProgress: flickable.openFactor
                    Layout.fillWidth: true
                    onPasswordChanged: {
                        passwordFlickable.contentY = passwordFlickable.contentHeight - passwordFlickable.height
                    }
                }
            }
        }
    }
    
    LockOsd {
        anchors.top: parent.top
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.topMargin: PlasmaCore.Units.largeSpacing
    }
}