// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// 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.

import QtQuick
import "../.."

// The wallpaper engine's page: on or off, the interval, and the two lists.
Module {
    name: "wallengine"
    label: "Wallpaper engine"
    // nf-fa-shuffle, present in Inconsolata Nerd Font.
    icon: "\uf074"
    settings: true
    dirty: WallEngine.dirty
    group: "Appearance"
    keywords: ["wallpaper", "timer", "rotate", "rotation", "shuffle", "slideshow", "heart"]

    // A singleton is built on first use, and the engine's timer has to run
    // from the start of the session, page opened or not. Modules exist for
    // the whole session, so this reference is what starts it.
    readonly property bool engineOn: WallEngine.on

    page: Component {
        Page {
            title: "Wallpaper engine"
            // SaveBar's place, not SaveBar: the engine is started and stopped
            // here as well as saved, and its state is what the header reports.
            actions: Component {
                Row {
                    spacing: 8
                    Text {
                        anchors.verticalCenter: parent.verticalCenter
                        text: WallEngine.dirty ? "unsaved changes"
                            : WallEngine.on ? "running, next change at "
                              + Qt.formatTime(new Date(WallEngine.nextAt), "hh:mm")
                            : "stopped"
                        color: WallEngine.dirty ? Theme.yellow : WallEngine.on ? Theme.green : Theme.overlay
                        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 4 }
                    }
                    Button {
                        visible: WallEngine.dirty
                        text: "Reset"
                        onClicked: WallEngine.reset()
                    }
                    Button {
                        visible: WallEngine.on
                        text: "Stop"
                        enabled: !Wallpapers.applying
                        onClicked: WallEngine.stop()
                    }
                    Button {
                        text: WallEngine.on ? "Apply" : "Start"
                        enabled: (!WallEngine.on || WallEngine.dirty) && !Wallpapers.applying
                        onClicked: WallEngine.on ? WallEngine.apply() : WallEngine.start()
                    }
                }
            }
            WallEngineTab { width: parent.width }
        }
    }
}