/*
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 "../components"

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 passwordFlickable.contentY === passwordFlickable.columnHeight;
    }

    function askPassword() {
        showPasswordAnim.restart();
    }
    NumberAnimation {
        id: showPasswordAnim
        target: passwordFlickable
        property: "contentY"
        from: 0
        to: passwordFlickable.contentHeight - passwordFlickable.height
        duration: PlasmaCore.Units.longDuration
        easing.type: Easing.InOutQuad
    }
    
    // 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
            }
        }
    }
    
    Notifications.WatchedNotificationsModel {
        id: notifModel
    }
    
    // header bar
    Loader {
        id: headerBar
        asynchronous: true
        anchors {
            top: parent.top
            left: parent.left
            right: parent.right
        }
        height: PlasmaCore.Units.gridUnit
        opacity: 1 - (passwordFlickable.contentY / passwordFlickable.columnHeight)
        sourceComponent: SimpleHeaderBar {}
    }

    // phone lockscreen component
    Loader {
        id: phoneComponent
        visible: !isWidescreen
        active: visible
        opacity: 1 - (passwordFlickable.contentY / passwordFlickable.columnHeight)
        
        asynchronous: true
        z: passwordFlickable.contentY === 0 ? 5 : 0 // in front of password flickable when closed
        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
            }
            MediaControls {
                Layout.alignment: Qt.AlignHCenter
                Layout.fillWidth: true
                Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                Layout.minimumWidth: PlasmaCore.Units.gridUnit * 15
                Layout.leftMargin: PlasmaCore.Units.gridUnit
                Layout.rightMargin: PlasmaCore.Units.gridUnit
            }
            
            NotificationsList {
                id: phoneNotificationsList
                Layout.fillHeight: true
                Layout.fillWidth: true
                Layout.topMargin: PlasmaCore.Units.gridUnit
                z: passwordFlickable.contentY === 0 ? 5 : 0 // prevent mousearea from interfering with pin drawer
                onCountChanged: root.notificationsShown = count !== 0
            }
        }
    }
    
    // tablet lockscreen component
    Loader {
        id: tabletComponent
        visible: isWidescreen
        active: visible
        opacity: 1 - (passwordFlickable.contentY / passwordFlickable.columnHeight)
        
        asynchronous: true
        z: passwordFlickable.contentY === 0 ? 5 : 0 // in front of password flickable when closed
        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
                    }
                    MediaControls {
                        Layout.alignment: Qt.AlignLeft
                        Layout.fillWidth: true
                        Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                        Layout.minimumWidth: PlasmaCore.Units.gridUnit * 20
                    }
                }
            }
                
            // tablet notifications list
            ColumnLayout {
                id: tabletNotificationsList
                anchors {
                    top: parent.top
                    bottom: parent.bottom
                    left: tabletClockComponent.right
                    right: parent.right
                    rightMargin: PlasmaCore.Units.gridUnit
                }
                
                NotificationsList {
                    Layout.alignment: Qt.AlignVCenter | Qt.AlignHCenter
                    Layout.fillWidth: true
                    Layout.maximumHeight: parent.height
                    Layout.minimumHeight: this.notificationListHeight
                    Layout.minimumWidth: PlasmaCore.Units.gridUnit * 15
                    Layout.maximumWidth: PlasmaCore.Units.gridUnit * 25
                    onCountChanged: root.notificationsShown = count !== 0
                }
            }
        }
    }
    
    // scroll up icon
    PlasmaCore.IconItem {
        id: scrollUpIcon
        anchors.bottom: parent.bottom
        anchors.bottomMargin: PlasmaCore.Units.gridUnit + passwordFlickable.contentY * 0.5
        anchors.horizontalCenter: parent.horizontalCenter
        opacity: 1 - (passwordFlickable.contentY / passwordFlickable.columnHeight)
        
        colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
        source: "arrow-up"
    }

    Flickable {
        id: passwordFlickable
        
        anchors.fill: parent
        
        property int columnHeight: PlasmaCore.Units.gridUnit * 20
        property int oldContentY: contentY
        
        height: columnHeight + root.height
        contentHeight: columnHeight + root.height
        boundsBehavior: Flickable.StopAtBounds
        
        // always snap to end (either hidden or shown)
        onMovementEnded: {
            if (!atYBeginning && !atYEnd) {
                if (contentY > columnHeight - contentY) {
                    flick(0, -1000);
                } else {
                    flick(0, 1000);
                }
            }
        }

        // wipe password if it is more than half way down the screen
        onContentYChanged: {
            if (contentY < columnHeight / 2 && oldContentY >= columnHeight / 2) {
                keypad.reset();
            }
            oldContentY = contentY;
        }
        
        ColumnLayout {
            id: passwordLayout
            anchors.bottom: parent.bottom
            
            width: parent.width
            spacing: PlasmaCore.Units.gridUnit
            
            // scroll down icon
            PlasmaCore.IconItem {
                Layout.alignment: Qt.AlignHCenter
                colorGroup: PlasmaCore.Theme.ComplementaryColorGroup
                source: "arrow-down"
                opacity: Math.sin((Math.PI / 2) * (passwordFlickable.contentY / passwordFlickable.columnHeight) + 1.5 * Math.PI) + 1
            }

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