/*
    SPDX-FileCopyrightText: 2014 Aleix Pol Gonzalez <aleixpol@blue-systems.com>

    SPDX-License-Identifier: GPL-2.0-or-later
*/

import QtQml
import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Qt5Compat.GraphicalEffects

import org.kde.plasma.components as PlasmaComponents3
import org.kde.plasma.workspace.components as PW
import org.kde.plasma.private.keyboardindicator as KeyboardIndicator
import org.kde.kirigami as Kirigami
import org.kde.kscreenlocker as ScreenLocker

import org.kde.plasma.private.sessions
import org.kde.breeze.components

Item {
    id: lockScreenUi

    // If we're using software rendering, draw outlines instead of shadows
    // See https://bugs.kde.org/show_bug.cgi?id=398317
    readonly property bool softwareRendering: GraphicsInfo.api === GraphicsInfo.Software

    function handleMessage(msg) {
        if (!root.notification) {
            root.notification += msg;
        } else if (root.notification.includes(msg)) {
            root.notificationRepeated();
        } else {
            root.notification += "\n" + msg
        }
    }

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

    Connections {
        target: authenticator
        function onFailed(kind) {
            if (kind != 0) { // if this is coming from the noninteractive authenticators
                return;
            }
            const msg = i18ndc("plasma_shell_org.kde.plasma.desktop", "@info:status", "Unlocking failed");
            lockScreenUi.handleMessage(msg);
            graceLockTimer.restart();
            notificationRemoveTimer.restart();
            rejectPasswordAnimation.start();
        }

        function onSucceeded() {
            if (authenticator.hadPrompt) {
                Qt.quit();
            } else {
                mainStack.replace(null, Qt.resolvedUrl("NoPasswordUnlock.qml"),
                    {
                        userListModel: users
                    },
                    StackView.Immediate,
                );
                mainStack.forceActiveFocus();
            }
        }

        function onInfoMessageChanged() {
            lockScreenUi.handleMessage(authenticator.infoMessage);
        }

        function onErrorMessageChanged() {
            lockScreenUi.handleMessage(authenticator.errorMessage);
        }

        function onPromptChanged(msg) {
            lockScreenUi.handleMessage(authenticator.prompt);
        }
        function onPromptForSecretChanged(msg) {
            mainBlock.showPassword = false;
            mainBlock.mainPasswordBox.forceActiveFocus();
        }
    }

    SessionManagement {
        id: sessionManagement
    }

    KeyboardIndicator.KeyState {
        id: capsLockState
        key: Qt.Key_CapsLock
    }

    Connections {
        target: sessionManagement
        function onAboutToSuspend() {
            root.clearPassword();
        }
    }

    RejectPasswordAnimation {
        id: rejectPasswordAnimation
        target: mainBlock
    }

    MouseArea {
        id: lockScreenRoot

        property bool uiVisible: false
        property bool seenPositionChange: false
        property bool blockUI: containsMouse && (mainStack.depth > 1 || mainBlock.mainPasswordBox.text.length > 0 || inputPanel.keyboardActive)

        x: parent.x
        y: parent.y
        width: parent.width
        height: parent.height
        hoverEnabled: true
        cursorShape: uiVisible ? Qt.ArrowCursor : Qt.BlankCursor
        drag.filterChildren: true
        onPressed: uiVisible = true;
        onPositionChanged: {
            uiVisible = seenPositionChange;
            seenPositionChange = true;
        }
        onUiVisibleChanged: {
            if (uiVisible) {
                Window.window.requestActivate();
            }

            if (blockUI) {
                fadeoutTimer.running = false;
            } else if (uiVisible) {
                fadeoutTimer.restart();
            }
            authenticator.startAuthenticating();
        }
        onBlockUIChanged: {
            if (blockUI) {
                fadeoutTimer.running = false;
                uiVisible = true;
            } else {
                fadeoutTimer.restart();
            }
        }
        onExited: {
            uiVisible = false;
        }
        Keys.onEscapePressed: {
            // If the escape key is pressed, kscreenlocker will turn off the screen.
            // We do not want to show the password prompt in this case.
            if (uiVisible) {
                uiVisible = false;
                if (inputPanel.keyboardActive) {
                    inputPanel.showHide();
                }
                root.clearPassword();
            }
        }
        Keys.onPressed: event => {
            uiVisible = true;
            event.accepted = false;
        }
        Timer {
            id: fadeoutTimer
            interval: 10000
            onTriggered: {
                if (!lockScreenRoot.blockUI) {
                    mainBlock.mainPasswordBox.showPassword = false;
                    lockScreenRoot.uiVisible = false;
                }
            }
        }
        Timer {
            id: notificationRemoveTimer
            interval: 3000
            onTriggered: root.notification = ""
        }