/*
 * This file is part of the Flowee project
 * Copyright (C) 2022-2023 Tom Zander <tom@flowee.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import QtQuick
import QtQuick.Controls as QQC2
import QtQuick.Layouts
import "../Flowee" as Flowee

QQC2.Control {
    id: root

    width: parent == null ? 10 : parent.width
    height: parent == null ? 10 : parent.height

    background: Rectangle {
        color: palette.light
    }

    leftPadding: 10
    rightPadding: 10
    topPadding: header.height

    default property alias content: focusScope.children
    property alias headerText: headerLabel.text
    property alias headerButtonVisible: headerButton.visible
    property alias headerButtonText: headerButton.text
    property alias headerButtonEnabled: headerButton.enabled
    /**
     * A list of action objects to populate the menu with
     * Setting this will make a hamburger button show up in the header
     */
    property var menuItems: [ ]
    signal headerButtonClicked

    function takeFocus() {
        focusScope.forceActiveFocus();
    }
    function closeHeaderMenu() {
        headerMenu.close();
    }

    onMenuItemsChanged: {
        // remove old ones first
        while (headerMenu.count > 0) {
            headerMenu.takeItem(0);
        }
        // set new ones
        for (let i = 0; i < menuItems.length; ++i) {
            headerMenu.addAction(menuItems[i]);
        }
    }

    Rectangle {
        id: header
        width: parent.width //  + 20
        height: 50
        color: Pay.useDarkSkin ? palette.window : mainWindow.floweeBlue

        Image {
            id: backButton
            x: 13
            source: "qrc:/back-arrow.svg"
            width: 20 * 1.1
            height: 15 * 1.1
            anchors.verticalCenter: parent.verticalCenter
            MouseArea {
                anchors.fill: parent
                anchors.margins: -15
                onClicked: thePile.pop();
            }
        }

        QQC2.Label {
            id: headerLabel
            color: "white"
            anchors.left: backButton.right
            anchors.right: {
                // we assume at most one of these two is in use.
                if (headerButton.visible)
                    return headerButton.left;
                if (hamburgerMenu.visible)
                    return hamburgerMenu.left;
                return parent.right;
            }
            horizontalAlignment: Text.AlignHCenter
            anchors.verticalCenter: parent.verticalCenter
        }

        Flowee.Button {
            id: headerButton
            visible: false
            anchors.right: parent.right
            anchors.rightMargin: 10
            anchors.verticalCenter: parent.verticalCenter
            onClicked: root.headerButtonClicked()
        }
        Flowee.HamburgerMenu {
            id: hamburgerMenu
            visible: root.menuItems.length > 0
            anchors.right: parent.right
            anchors.rightMargin: 15
            anchors.verticalCenter: parent.verticalCenter
            color: "white"
            MouseArea {
                anchors.fill: parent
                anchors.margins: -15
                onClicked: headerMenu.open();
            }
            QQC2.Menu {
                id: headerMenu
            }
        }
    }

    contentItem: FocusScope {
        id: focusScope
    }
}