From 1a02fe1688d66aea6277f61fcc305a6aed4e7d76 Mon Sep 17 00:00:00 2001 From: liam4 Date: Thu, 20 Jul 2017 18:55:18 -0300 Subject: Update JS to have one main http-music command --- src/play.js | 412 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 412 insertions(+) create mode 100755 src/play.js (limited to 'src/play.js') diff --git a/src/play.js b/src/play.js new file mode 100755 index 0000000..9515d97 --- /dev/null +++ b/src/play.js @@ -0,0 +1,412 @@ +#!/usr/bin/env node + +'use strict' + +const { promisify } = require('util') +const clone = require('clone') +const fs = require('fs') +const fetch = require('node-fetch') +const pickers = require('./pickers') +const loopPlay = require('./loop-play') +const processArgv = require('./process-argv') + +const { + filterPlaylistByPathString, removeGroupByPathString, getPlaylistTreeString, + updatePlaylistFormat +} = require('./playlist-utils') + +const readFile = promisify(fs.readFile) +const writeFile = promisify(fs.writeFile) + +function downloadPlaylistFromURL(url) { + return fetch(url).then(res => res.text()) +} + +function downloadPlaylistFromLocalPath(path) { + return readFile(path) +} + +function downloadPlaylistFromOptionValue(arg) { + // TODO: Verify things! + if (arg.startsWith('http://') || arg.startsWith('https://')) { + return downloadPlaylistFromURL(arg) + } else { + return downloadPlaylistFromLocalPath(arg) + } +} + +function clearConsoleLine() { + process.stdout.write('\x1b[1K\r') +} + +async function main(args) { + let sourcePlaylist = null + let activePlaylist = null + + let pickerType = 'shuffle' + let playOpts = [] + + // WILL play says whether the user has forced playback via an argument. + // SHOULD play says whether the program has automatically decided to play + // or not, if the user hasn't set WILL play. + let shouldPlay = true + let willPlay = null + + async function openPlaylist(arg, silent = false) { + let playlistText + + if (!silent) { + console.log("Opening playlist from: " + arg) + } + + try { + playlistText = await downloadPlaylistFromOptionValue(arg) + } catch(err) { + if (!silent) { + console.error("Failed to open playlist file: " + arg) + console.error(err) + } + + return false + } + + const openedPlaylist = updatePlaylistFormat(JSON.parse(playlistText)) + + // The active playlist is a clone of the source playlist; after all it's + // quite possible we'll be messing with the value of the active playlist, + // and we don't want to reflect those changes in the source playlist. + sourcePlaylist = openedPlaylist + activePlaylist = clone(openedPlaylist) + + processArgv(openedPlaylist.options, optionFunctions) + } + + function requiresOpenPlaylist() { + if (activePlaylist === null) { + throw new Error( + "This action requires an open playlist - try --open (file)" + ) + } + } + + const optionFunctions = { + '-help': function(util) { + // --help (alias: -h, -?) + // Presents a help message. + + console.log('http-music\nTry man http-music!') + + if (util.index === util.argv.length - 1) { + shouldPlay = false + } + }, + + 'h': util => util.alias('-help'), + '?': util => util.alias('-help'), + + '-open-playlist': async function(util) { + // --open-playlist (alias: --open, -o) + // Opens a separate playlist file. + // This sets the source playlist. + + await openPlaylist(util.nextArg()) + }, + + '-open': util => util.alias('-open-playlist'), + 'o': util => util.alias('-open-playlist'), + + '-write-playlist': function(util) { + // --write-playlist (alias: --write, -w, --save) + // Writes the active playlist to a file. This file can later be used + // with --open ; you won't need to stick in all the filtering + // options again. + + requiresOpenPlaylist() + + const playlistString = JSON.stringify(activePlaylist, null, 2) + const file = util.nextArg() + + console.log(`Saving playlist to file ${file}...`) + + return writeFile(file, playlistString).then(() => { + console.log("Saved.") + + // If this is the last option, the user probably doesn't actually + // want to play the playlist. (We need to check if this is len - 2 + // rather than len - 1, because of the option that comes + // after --write-playlist.) + if (util.index === util.argv.length - 2) { + shouldPlay = false + } + }) + }, + + '-write': util => util.alias('-write-playlist'), + 'w': util => util.alias('-write-playlist'), + '-save': util => util.alias('-write-playlist'), + + '-print-playlist': function(util) { + // --print-playlist (alias: --log-playlist, --json) + // Prints out the JSON representation of the active playlist. + + requiresOpenPlaylist() + + console.log(JSON.stringify(activePlaylist, null, 2)) + + // As with --write-playlist, the user probably doesn't want to actually + // play anything if this is the last option. + if (util.index === util.argv.length - 1) { + shouldPlay = false + } + }, + + '-log-playlist': util => util.alias('-print-playlist'), + '-json': util => util.alias('-print-playlist'), + + '-clear': function(util) { + // --clear (alias: -c) + // Clears the active playlist. This does not affect the source + // playlist. + + requiresOpenPlaylist() + + activePlaylist.items = [] + }, + + 'c': util => util.alias('-clear'), + + '-keep': function(util) { + // --keep (alias: -k) + // Keeps a group by loading it from the source playlist into the + // active playlist. This is usually useful after clearing the + // active playlist; it can also be used to keep a subgroup when + // you've removed an entire parent group, e.g. `-r foo -k foo/baz`. + + requiresOpenPlaylist() + + const pathString = util.nextArg() + const group = filterPlaylistByPathString(sourcePlaylist, pathString) + activePlaylist.items.push(group) + }, + + 'k': util => util.alias('-keep'), + + '-remove': function(util) { + // --remove (alias: -r, -x) + // Filters the playlist so that the given path is removed. + + requiresOpenPlaylist() + + const pathString = util.nextArg() + console.log("Ignoring path: " + pathString) + removeGroupByPathString(activePlaylist, pathString) + }, + + 'r': util => util.alias('-remove'), + 'x': util => util.alias('-remove'), + + '-list-groups': function(util) { + // --list-groups (alias: -l, --list) + // Lists all groups in the playlist. + + requiresOpenPlaylist() + + console.log(getPlaylistTreeString(activePlaylist)) + + // If this is the last item in the argument list, the user probably + // only wants to get the list, so we'll mark the 'should run' flag + // as false. + if (util.index === util.argv.length - 1) { + shouldPlay = false + } + }, + + '-list': util => util.alias('-list-groups'), + 'l': util => util.alias('-list-groups'), + + '-list-all': function(util) { + // --list-all (alias: --list-tracks, -L) + // Lists all groups and tracks in the playlist. + + requiresOpenPlaylist() + + console.log(getPlaylistTreeString(activePlaylist, true)) + + // As with -l, if this is the last item in the argument list, we + // won't actually be playing the playlist. + if (util.index === util.argv.length - 1) { + shouldPlay = false + } + }, + + '-list-tracks': util => util.alias('-list-all'), + 'L': util => util.alias('-list-all'), + + '-play': function(util) { + // --play (alias: -p) + // Forces the playlist to actually play. + + willPlay = true + }, + + 'p': util => util.alias('-play'), + + '-no-play': function(util) { + // --no-play (alias: -np) + // Forces the playlist not to play. + + willPlay = false + }, + + 'np': util => util.alias('-no-play'), + + '-picker': function(util) { + // --picker (alias: --selector) + // Selects the mode that the song to play is picked. + // See pickers.js. + + pickerType = util.nextArg() + }, + + '-selector': util => util.alias('-picker'), + + '-play-opts': function(util) { + // --play-opts + // Sets command line options passed to the `play` command. + + playOpts = util.nextArg().split(' ') + } + } + + await openPlaylist('./playlist.json', true) + + await processArgv(args, optionFunctions) + + if (activePlaylist === null) { + throw new Error( + "Cannot play - no open playlist. Try --open ?" + ) + } + + if (willPlay || (willPlay === null && shouldPlay)) { + let picker + if (pickerType === 'shuffle') { + console.log("Using shuffle picker.") + picker = pickers.makeShufflePlaylistPicker(activePlaylist) + } else if (pickerType === 'ordered') { + console.log("Using ordered picker.") + picker = pickers.makeOrderedPlaylistPicker(activePlaylist) + } else { + console.error("Invalid picker type: " + pickerType) + return + } + + const { + promise: playPromise, + playController: play, + downloadController + } = loopPlay(picker, playOpts) + + // We're looking to gather standard input one keystroke at a time. + // But that isn't *always* possible, e.g. when piping into the http-music + // command through the shell. + if ('setRawMode' in process.stdin) { + process.stdin.setRawMode(true) + } else { + console.warn("User input cannot be gotten!") + console.warn("If you're piping into http-music, this is normal.") + } + + process.stdin.on('data', data => { + const escModifier = Buffer.from('\x1b[') + const shiftModifier = Buffer.from('1;2') + + const esc = num => Buffer.concat([escModifier, Buffer.from([num])]) + + const shiftEsc = num => ( + Buffer.concat([escModifier, shiftModifier, Buffer.from([num])]) + ) + + if (Buffer.from([0x20]).equals(data)) { + play.togglePause() + } + + if (esc(0x43).equals(data)) { + play.seekAhead(5) + } + + if (esc(0x44).equals(data)) { + play.seekBack(5) + } + + if (shiftEsc(0x43).equals(data)) { + play.seekAhead(30) + } + + if (shiftEsc(0x44).equals(data)) { + play.seekBack(30) + } + + if (esc(0x41).equals(data)) { + play.volUp(10) + } + + if (esc(0x42).equals(data)) { + play.volDown(10) + } + + if (Buffer.from('s').equals(data)) { + clearConsoleLine() + console.log( + "Skipping the track that's currently playing. " + + "(Press I for track info!)" + ) + + play.skip() + } + + if (Buffer.from([0x7f]).equals(data)) { + clearConsoleLine() + console.log( + "Skipping the track that's up next. " + + "(Press I for track info!)" + ) + + // TODO: It would be nice to have this as a method of + // PlayController. + // Double TODO: This doesn't actually work!! + downloadController.cancel() + play.startNextDownload() + } + + if ( + Buffer.from('i').equals(data) || + Buffer.from('t').equals(data) + ) { + clearConsoleLine() + play.logTrackInfo() + } + + if ( + Buffer.from('q').equals(data) || + Buffer.from([0x03]).equals(data) || // ^C + Buffer.from([0x04]).equals(data) // ^D + ) { + play.kill() + process.stdout.write('\n') + process.exit(0) + } + }) + + return playPromise + } else { + return activePlaylist + } +} + +module.exports = main + +if (require.main === module) { + main(process.argv.slice(2)) + .catch(err => console.error(err)) +} -- cgit 1.3.0-6-gf8a5