import Mpris from 'resource:///com/github/Aylur/ags/service/mpris.js';
import Variable from 'resource:///com/github/Aylur/ags/variable.js';

import { Box, CenterBox } from 'resource:///com/github/Aylur/ags/widget.js';

import * as mpris from './mpris.js';
import PlayerGesture from './gesture.js';
import Separator from '../misc/separator.js';

const FAVE_PLAYER = 'org.mpris.MediaPlayer2.spotify';


const Top = (player) => Box({
    className: 'top',
    hpack: 'start',
    vpack: 'start',

    children: [
        mpris.PlayerIcon(player, {
            symbolic: false,
        }),
    ],
});

const Center = (player) => Box({
    className: 'center',

    children: [
        CenterBox({
            vertical: true,

            children: [
                Box({
                    className: 'metadata',
                    vertical: true,
                    hpack: 'start',
                    vpack: 'center',
                    hexpand: true,

                    children: [
                        mpris.TitleLabel(player),
                        mpris.ArtistLabel(player),
                    ],
                }),
                null,
                null,
            ],
        }),

        CenterBox({
            vertical: true,

            children: [
                null,
                mpris.PlayPauseButton(player),
                null,
            ],
        }),

    ],
});

const SPACING = 8;

const Bottom = (player) => Box({
    className: 'bottom',

    children: [
        mpris.PreviousButton(player, {
            vpack: 'end',
            hpack: 'start',
        }),
        Separator(SPACING),

        mpris.PositionSlider(player),
        Separator(SPACING),

        mpris.NextButton(player),
        Separator(SPACING),

        mpris.ShuffleButton(player),
        Separator(SPACING),

        mpris.LoopButton(player),
    ],
});

const PlayerBox = (player) => mpris.CoverArt(player, {
    className: `player ${player.name}`,
    hexpand: true,

    children: [
        Top(player),
        Center(player),
        Bottom(player),
    ],
});

export default () => Box({
    className: 'media',

    child: PlayerGesture({
        properties: [
            ['players', new Map()],
            ['setup', false],
        ],

        connections: [
            [Mpris, (overlay, busName) => {
                if (overlay._players.has(busName)) {
                    return;
                }

                // Sometimes the signal doesn't give the busName
                if (!busName) {
                    const player = Mpris.players.find((p) => {
                        return !overlay._players.has(p.busName);
                    });

                    if (player) {
                        busName = player.busName;
                    }
                    else {
                        return;
                    }
                }

                // Get the one on top so it stays there
                let previousFirst = overlay.get_children().at(-1);

                for (const [key, value] of overlay._players.entries()) {
                    if (value === previousFirst) {
                        previousFirst = key;
                        break;
                    }
                }

                const player = Mpris.getPlayer(busName);

                player.colors = Variable();

                overlay._players.set(busName, PlayerBox(player));

                const result = [];

                overlay._players.forEach((widget) => {
                    result.push(widget);
                });

                overlay.overlays = result;

                // Select favorite player at startup
                if (!overlay._setup && overlay._players.has(FAVE_PLAYER)) {
                    overlay.reorder_overlay(
                        overlay._players.get(FAVE_PLAYER),
                        -1,
                    );
                    overlay._setup = true;
                }
                else if (overlay._players.get(previousFirst)) {
                    overlay.reorder_overlay(
                        overlay._players.get(previousFirst),
                        -1,
                    );
                }
            }, 'player-added'],


            [Mpris, (overlay, busName) => {
                if (!busName || !overlay._players.has(busName)) {
                    return;
                }

                // Get the one on top so it stays there
                let previousFirst = overlay.get_children().at(-1);

                for (const [key, value] of overlay._players.entries()) {
                    if (value === previousFirst) {
                        previousFirst = key;
                        break;
                    }
                }

                overlay._players.delete(busName);

                const result = [];

                overlay._players.forEach((widget) => {
                    result.push(widget);
                });

                overlay.overlays = result;

                if (overlay._players.has(previousFirst)) {
                    overlay.reorder_overlay(
                        overlay._players.get(previousFirst),
                        -1,
                    );
                }
            }, 'player-closed'],
        ],
    }),
});