orchard/src/main/mpris.js

const { nativeImage } = require("electron");
const path = require('path')

let mediaPlayer = null;

module.exports = {

    /**
     * Connects to the MPRIS interface.
     * @param {Object} win - The BrowserWindow.
     */
    connect: (win) => {
        if (process.platform !== "linux") return;

        const Player = require('mpris-service');

        mediaPlayer = Player({
            name: 'Cider',
            identity: 'Cider',
            supportedUriSchemes: [],
            supportedMimeTypes: [],
            supportedInterfaces: ['player']
        });
        mediaPlayer = Object.assign(mediaPlayer, { canQuit: true, canControl: true, canPause: true, canPlay: true, canGoNext: true })


        let pos_atr = {durationInMillis: 0};
        mediaPlayer.getPosition = function () {
            const durationInMicro = pos_atr.durationInMillis * 1000;
            const percentage = parseFloat("0") || 0;
            return durationInMicro * percentage;
        }

        mediaPlayer.active = true

        mediaPlayer.on('playpause', async () => {
            win.webContents.executeJavaScript('MusicKitInterop.pausePlay()').catch(err => console.error(err))
        });

        mediaPlayer.on('play', async () => {
            win.webContents.executeJavaScript('MusicKitInterop.pausePlay()').catch(err => console.error(err))
        });

        mediaPlayer.on('pause', async () => {
            win.webContents.executeJavaScript('MusicKitInterop.pausePlay()').catch(err => console.error(err))
        });

        mediaPlayer.on('next', async () => {
            win.webContents.executeJavaScript('MusicKitInterop.nextTrack()').catch(err => console.error(err))
        });

        mediaPlayer.on('previous', async () => {
            win.webContents.executeJavaScript('MusicKitInterop.previousTrack()').catch(err => console.error(err))
        });
    },

    /**
     * Updates the MPRIS interface.
     * @param {Object} attributes - The attributes of the track.
     */
    updateAttributes: (attributes) => {
        if (process.platform !== "linux") return;

        const MetaData = {
            'mpris:trackid': mediaPlayer.objectPath(`track/${attributes.playParams.id.replace(/[.]+/g, "")}`),
            'mpris:length': attributes.durationInMillis * 1000, // In microseconds
            'mpris:artUrl': (attributes.artwork.url.replace('/{w}x{h}bb', '/512x512bb')).replace('/2000x2000bb', '/35x35bb'),
            'xesam:title': `${attributes.name}`,
            'xesam:album': `${attributes.albumName}`,
            'xesam:artist': [`${attributes.artistName}`,],
            'xesam:genre': attributes.genreNames
        }

        if (mediaPlayer.metadata["mpris:trackid"] === MetaData["mpris:trackid"]) {
            return
        }

        mediaPlayer.metadata = MetaData
    },

    /**
     * Updates the playback state of the MPRIS interface.
     * @param {Object} attributes - The attributes of the track.
     */
    updateState: (attributes) => {
        if (process.platform !== "linux") return;

        function setPlaybackIfNeeded(status) {
            if (mediaPlayer.playbackStatus === status) {
                return
            }
            mediaPlayer.playbackStatus = status;
        }

        switch (attributes.status) {
            case true: // Playing
                setPlaybackIfNeeded('Playing');
                break;
            case false: // Paused
                setPlaybackIfNeeded('Paused');
                break;
            default: // Stopped
                setPlaybackIfNeeded('Stopped');
                break;
        }
    },

    SetButtons: (win, attributes) => {
        if (process.platform === 'win32') { // Set the Windows Thumbnail Toolbar Buttons
            win.setThumbarButtons([
                {
                    tooltip: 'Previous',
                    icon: nativeImage.createFromPath(path.join(__dirname, 'thumbaricons/backwardPng.png')),
                    click() {
                        console.log("Clicked the bc taskbar button!")
                        win.webContents.executeJavaScript('MusicKitInterop.previousTrack()').catch(err => console.error(err))
                    }
                },
                {
                    tooltip: attributes.status ? 'Pause' : 'Play',
                    //tooltip: 'Play',
                    icon: attributes.status ? nativeImage.createFromPath(path.join(__dirname, 'thumbaricons/pausePng.png')) : nativeImage.createFromPath(path.join(__dirname, 'thumbaricons/playPng.png')),
                    click() {
                        console.log("Clicked the pl taskbar button!")
                        win.webContents.executeJavaScript('MusicKitInterop.pausePlay()').catch(err => console.error(err))
                    }
                },
                {
                    tooltip: 'Next',
                    icon: nativeImage.createFromPath(path.join(__dirname, 'thumbaricons/forwardPng.png')),
                    click() {
                        console.log("Clicked the fw taskbar button!")
                        win.webContents.executeJavaScript('MusicKitInterop.nextTrack()').catch(err => console.error(err))
                    }
                }
            ]);

        }
    },

    /**
     * Closes the MPRIS interface.
     */
    clearActivity: () => {
        if (process.platform !== "linux") return;
        mediaPlayer.metadata = {'mpris:trackid': '/org/mpris/MediaPlayer2/TrackList/NoTrack'}
        mediaPlayer.playbackStatus = 'Stopped';
    },
}