Files
metrics/src/plugins/music/index.mjs
2020-10-26 13:22:51 +01:00

213 lines
10 KiB
JavaScript

//Supported providers
const providers = {
apple:{
name:"Apple Music",
embed:/^https:..embed.music.apple.com.\w+.playlist/,
},
spotify:{
name:"Spotify",
embed:/^https:..open.spotify.com.embed.playlist/,
},
}
//Supported modes
const modes = {
playlist:"Suggested tracks",
recent:"Recently played",
}
//Setup
export default function ({login, imports, rest, computed, pending, q}, {enabled = false, token = ""} = {}) {
//Check if plugin is enabled and requirements are met
if (!enabled)
return computed.plugins.music = null
if (!q.music)
return computed.plugins.music = null
console.debug(`metrics/compute/${login}/plugins > music`)
const raw = {
get provider() { return providers[provider]?.name ?? "" },
get mode() { return modes[mode] ?? "Unconfigured music plugin"},
}
//Parameters override and checks
let {"music.provider":provider = null, "music.mode":mode = null, "music.playlist":playlist = null, "music.limit":limit = 4} = q
//Auto-guess parameters
if ((playlist)&&(mode === null))
mode = "playlist"
if ((playlist)&&(provider === null))
for (const [name, {embed}] of Object.entries(providers))
if (embed.test(playlist))
provider = name
if (!mode)
mode = "recent"
//Provider
if (!(provider in providers))
return computed.plugins.music = {...raw, error:provider ? `Unsupported provider "${provider}"` : `Missing provider`}
//Mode
if (!(mode in modes))
return computed.plugins.music = {...raw, error:`Unsupported mode "${mode}"`}
//Playlist mode
if (mode === "playlist") {
if (!playlist)
return computed.plugins.music = {...raw, error:`Missing playlist url`}
if (!providers[provider].embed.test(playlist))
return computed.plugins.music = {...raw, error:`Unsupported playlist url format`}
}
//Limit
limit = Math.max(1, Math.min(100, Number(limit)))
//Debug
console.debug(`metrics/compute/${login}/plugins > habits > ${JSON.stringify({provider, mode, playlist, limit})}`)
//Plugin execution
pending.push(new Promise(async solve => {
//Retrieve music data
try {
//Initialization
let tracks = null
//Handle mode
switch (mode) {
//Playlist mode
case "playlist":{
//Start puppeteer and navigate to playlist
console.debug(`metrics/compute/${login}/plugins > music > starting browser`)
const browser = await imports.puppeteer.launch({headless:true, executablePath:process.env.PUPPETEER_BROWSER_PATH, args:["--no-sandbox", "--disable-extensions", "--disable-setuid-sandbox", "--disable-dev-shm-usage"]})
console.debug(`metrics/compute/${login}/plugins > music > loaded ${await browser.version()}`)
const page = await browser.newPage()
console.debug(`metrics/compute/${login}/plugins > music > loading page`)
await page.goto(playlist)
const frame = page.mainFrame()
//Handle provider
switch (provider) {
//Apple music
case "apple":{
//Parse tracklist
await frame.waitForSelector(".tracklist.playlist")
tracks = [...await frame.evaluate(() => [...document.querySelectorAll(".tracklist li")].map(li => ({
name:li.querySelector(".tracklist__track__name").innerText,
artist:li.querySelector(".tracklist__track__sub").innerText,
artwork:li.querySelector(".tracklist__track__artwork img").src
})))]
break
}
//Spotify
case "spotify":{
//Parse tracklist
await frame.waitForSelector("table")
tracks = [...await frame.evaluate(() => [...document.querySelectorAll("table tr")].map(tr => ({
name:tr.querySelector("td:nth-child(2) div:nth-child(1)").innerText,
artist:tr.querySelector("td:nth-child(2) div:nth-child(2)").innerText,
//Spotify doesn't provide artworks so we fallback on playlist artwork instead
artwork:window.getComputedStyle(document.querySelector("button[title=Play]").parentNode, null).backgroundImage.match(/^url\("(https:...+)"\)$/)[1]
})))]
break
}
//Unsupported
default:{
throw {status:`Unsupported mode "${mode}" for provider "${provider}"`}
}
}
//Close browser
console.debug(`metrics/compute/${login}/plugins > music > closing browser`)
await browser.close()
//Format tracks
if (Array.isArray(tracks)) {
//Tracks
console.debug(`metrics/compute/${login}/plugins > music > found ${tracks.length} tracks`)
console.debug(JSON.stringify(tracks))
//Shuffle tracks
tracks = imports.shuffle(tracks)
}
break
}
//Recently played
case "recent":{
//Initialisation
const timestamp = Date.now()-24*60*60*1000
//Handle provider
switch (provider) {
//Spotify
case "spotify":{
//Prepare credentials
const [client_id, client_secret, refresh_token] = token.split(",").map(part => part.trim())
if ((!client_id)||(!client_secret)||(!refresh_token))
throw {status:`Spotify token must contain client id/secret and refresh token`}
//API call and parse tracklist
try {
//Request access token
console.debug(`metrics/compute/${login}/plugins > music > requesting access token with refresh token for spotify`)
const {data:{access_token:access}} = await imports.axios.post("https://accounts.spotify.com/api/token",
`${new imports.url.URLSearchParams({grant_type:"refresh_token", refresh_token, client_id, client_secret})}`,
{headers:{"Content-Type":"application/x-www-form-urlencoded"}},
)
console.log(access)
console.debug(`metrics/compute/${login}/plugins > music > got new access token`)
//Retriev tracks
tracks = (await imports.axios(`https://api.spotify.com/v1/me/player/recently-played?limit=${limit}&after=${timestamp}`, {headers:{
"Accept":"application/json",
"Content-Type":"application/json",
"Authorization":`Bearer ${access}`}
})).data.items.map(({track}) => ({
name:track.name,
artist:track.artists[0].name,
artwork:track.album.images[0].url,
}))
}
//Handle errors
catch (error) {
console.debug(error)
if ((error.response)&&(error.response.status))
throw {status:`API call returned ${error.response.status}`}
throw error
}
break
}
//Unsupported
default:{
throw {status:`Unsupported mode "${mode}" for provider "${provider}"`}
}
}
break
}
//Unsupported
default:{
throw {status:`Unsupported mode "${mode}"`}
}
}
//Format tracks
if (Array.isArray(tracks)) {
//Limit tracklist
if (limit > 0) {
console.debug(`metrics/compute/${login}/plugins > music > keeping only ${limit} tracks`)
tracks = tracks.slice(0, limit)
}
//Convert artworks to base64
console.debug(`metrics/compute/${login}/plugins > music > loading artworks`)
for (const track of tracks) {
console.debug(`metrics/compute/${login}/plugins > music > processing ${track.name}`)
track.artwork = await imports.imgb64(track.artwork)
}
//Save results
console.debug(`metrics/compute/${login}/plugins > music > success`)
computed.plugins.music = {...raw, tracks}
solve()
return
}
//Unhandled error
throw {status:`An error occured (unhandled)`}
}
catch (error) {
//Plugin error
if (error.status) {
computed.plugins.music = {...raw, error:error.status}
console.debug(`metrics/compute/${login}/plugins > music > error > ${error.status}`)
return solve()
}
//Generic error
computed.plugins.music = {...raw, error:`An error occured`}
console.debug(`metrics/compute/${login}/plugins > music > error`)
console.debug(error)
solve()
}
}))
}