/*
 * SPDX-FileCopyrightText: (C) 2020 Carl Schwan <carl@carlschwan.eu>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

import QtQuick 2.10
import QtQuick.Controls 2.1 as QQC2
import QtQuick.Layouts 1.12
import org.kde.kirigami 2.12 as Kirigami
import org.kde.kquickimageeditor 1.0 as KQuickImageEditor
import QtGraphicalEffects 1.12
import Qt.labs.platform 1.0 as Platform

Kirigami.Page {
    id: rootEditorView

    property bool resizing: false;
    required property string imagePath

    signal newPathChanged(string newPath);

    title: i18n("Edit")
    leftPadding: 0
    rightPadding: 0

    

    function crop() {
        const ratioX = editImage.paintedWidth / editImage.nativeWidth;
        const ratioY = editImage.paintedHeight / editImage.nativeHeight;
        rootEditorView.resizing = false
        imageDoc.crop(resizeRectangle.insideX / ratioX, resizeRectangle.insideY / ratioY, resizeRectangle.insideWidth / ratioX, resizeRectangle.insideHeight / ratioY);
    }

    actions {
        left: Kirigami.Action {
            id: undoAction
            text: i18nc("@action:button Undo modification", "Undo")
            iconName: "edit-undo"
            onTriggered: imageDoc.undo();
            visible: imageDoc.edited
        }
        main: Kirigami.Action {
            id: okAction
            text: i18nc("@action:button Accept image modification", "Accept")
            iconName: "dialog-ok"
            onTriggered: {
                let newPath = Platform.StandardPaths.writableLocation(Platform.StandardPaths.CacheLocation) + "/" + (new Date()).getTime() + "." + imagePath.split('.').pop();
                if (imageDoc.saveAs(newPath)) {;
                    newPathChanged(newPath);
                } else {
                    msg.type = Kirigami.MessageType.Error
                    msg.text = i18n("Unable to save file. Check if you have the correct permission to edit the cache directory.")
                    msg.visible = true;
                }
            }
        }
    }



    contentItem: KQuickImageEditor.ImageItem {
        id: editImage
        fillMode: KQuickImageEditor.ImageItem.PreserveAspectFit
        image: imageDoc.image

        Shortcut {
            sequence: StandardKey.Undo
            onActivated: undoAction.trigger();
        }

        Shortcut {
            sequences: [StandardKey.Save, "Enter"]
            onActivated: saveAction.trigger();
        }

        Shortcut {
            sequence: StandardKey.SaveAs
            onActivated: saveAsAction.trigger();
        }    anchors.fill: parent

        KQuickImageEditor.ImageDocument {
            id: imageDoc
            path: rootEditorView.imagePath
        }
    }

    header: QQC2.ToolBar {
        contentItem: Kirigami.ActionToolBar {
            id: actionToolBar
            display: QQC2.Button.TextBesideIcon
            actions: [
                Kirigami.Action {
                    iconName: rootEditorView.resizing ? "dialog-cancel" : "transform-crop"
                    text: rootEditorView.resizing ? i18n("Cancel") : i18nc("@action:button Crop an image", "Crop");
                    onTriggered: {
                        resizeRectangle.width = editImage.paintedWidth
                        resizeRectangle.height = editImage.paintedHeight
                        resizeRectangle.x = editImage.horizontalPadding
                        resizeRectangle.y = editImage.verticalPadding
                        resizeRectangle.insideX = 100
                        resizeRectangle.insideY = 100
                        resizeRectangle.insideWidth = 100
                        resizeRectangle.insideHeight = 100

                        rootEditorView.resizing = !rootEditorView.resizing;
                    }
                },
                Kirigami.Action {
                    iconName: "dialog-ok"
                    visible: rootEditorView.resizing
                    text: i18nc("@action:button Crop an image", "Crop");
                    onTriggered: rootEditorView.crop();
                },
                Kirigami.Action {
                    iconName: "object-rotate-left"
                    text: i18nc("@action:button Rotate an image to the left", "Rotate left");
                    onTriggered: imageDoc.rotate(-90);
                    visible: !rootEditorView.resizing
                },
                Kirigami.Action {
                    iconName: "object-rotate-right"
                    text: i18nc("@action:button Rotate an image to the right", "Rotate right");
                    onTriggered: imageDoc.rotate(90);
                    visible: !rootEditorView.resizing
                },
                Kirigami.Action {
                    iconName: "object-flip-vertical"
                    text: i18nc("@action:button Mirror an image vertically", "Flip");
                    onTriggered: imageDoc.mirror(false, true);
                    visible: !rootEditorView.resizing
                },
                Kirigami.Action {
                    iconName: "object-flip-horizontal"
                    text: i18nc("@action:button Mirror an image horizontally", "Mirror");
                    onTriggered: imageDoc.mirror(true, false);
                    visible: !rootEditorView.resizing
                }
            ]
        }
    }

    footer: Kirigami.InlineMessage {
        id: msg
        type: Kirigami.MessageType.Error
        showCloseButton: true
        visible: false
    }

    KQuickImageEditor.ResizeRectangle {
        id: resizeRectangle

        visible: rootEditorView.resizing

        width: editImage.paintedWidth
        height: editImage.paintedHeight
        x: editImage.horizontalPadding
        y: editImage.verticalPadding

        insideX: 100
        insideY: 100
        insideWidth: 100
        insideHeight: 100

        onAcceptSize: rootEditorView.crop();
    }
}