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

import QtQuick
import QtQuick.Layouts
import QtQuick.Effects

import org.kde.kirigami 2.20 as Kirigami
import org.kde.plasma.core as PlasmaCore
import org.kde.plasma.components 3.0 as PlasmaComponents3
import org.kde.plasma.private.mobileshell as MobileShell

import org.kde.kquickcontrolsaddons 2.0 as KQCAddons

MouseArea {
    id: thumbnailArea

    // The protocol supports multiple URLs but so far it's only used to show
    // a single preview image, so this code is simplified a lot to accommodate
    // this usecase and drops everything else (fallback to app icon or ListView
    // for multiple files)
    property var urls

    readonly property alias menuOpen: fileMenu.visible

    property int _pressX: -1
    property int _pressY: -1

    property int leftPadding: 0
    property int rightPadding: 0
    property int topPadding: 0
    property int bottomPadding: 0

    signal openUrl(string url)
    signal fileActionInvoked(QtObject action)

    implicitHeight: Math.max(menuButton.height + 2 * menuButton.anchors.topMargin,
                             Math.round(Math.min(width / 3, width / thumbnailer.ratio)))
                    + topPadding + bottomPadding

    MobileShell.NotificationFileMenu {
        id: fileMenu
        url: thumbnailer.url
        visualParent: menuButton
        onActionTriggered: thumbnailArea.fileActionInvoked(action)
    }

    MobileShell.NotificationThumbnailer {
        id: thumbnailer

        readonly property real ratio: pixmapSize.height ? pixmapSize.width / pixmapSize.height : 1

        url: urls[0]
        // height is dynamic, so request a "square" size and then show it fitting to aspect ratio
        size: Qt.size(thumbnailArea.width, thumbnailArea.width)
    }

    KQCAddons.QPixmapItem {
        id: previewBackground
        anchors.fill: parent
        fillMode: Image.PreserveAspectCrop
        opacity: 0.25
        pixmap: thumbnailer.pixmap

        layer.enabled: true
        layer.effect: MultiEffect {
            source: previewBackground
            anchors.fill: parent
            autoPaddingEnabled: false
            blurEnabled: true
            blur: 1.0
        }
    }

    Item {
        anchors {
            fill: parent
            leftMargin: thumbnailArea.leftPadding
            rightMargin: thumbnailArea.rightPadding
            topMargin: thumbnailArea.topPadding
            bottomMargin: thumbnailArea.bottomPadding
        }

        KQCAddons.QPixmapItem {
            id: previewPixmap
            anchors.fill: parent
            pixmap: thumbnailer.pixmap
            smooth: true
            fillMode: Image.PreserveAspectFit
        }

        Kirigami.Icon {
            anchors.centerIn: parent
            width: height
            height: Kirigami.Units.iconSizes.roundedIconSize(parent.height)
            source: !thumbnailer.busy && !thumbnailer.hasPreview ? thumbnailer.iconName : ""
        }

        PlasmaComponents3.BusyIndicator {
            anchors.centerIn: parent
            running: thumbnailer.busy
            visible: thumbnailer.busy
        }

        PlasmaComponents3.Button {
            id: menuButton
            anchors {
                top: parent.top
                right: parent.right
                margins: Kirigami.Units.smallSpacing
            }
            Accessible.name: tooltip.text
            icon.name: "application-menu"
            checkable: true

            onPressedChanged: {
                if (pressed) {
                    // fake "pressed" while menu is open
                    checked = Qt.binding(function() {
                        return fileMenu.visible;
                    });

                    fileMenu.visualParent = this;
                    // -1 tells it to "align bottom left of visualParent (this)"
                    fileMenu.open(-1, -1);
                }
            }

            PlasmaComponents3.ToolTip {
                id: tooltip
                text: i18n("More Options…")
            }
        }
    }
}