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Diffstat (limited to 'src/http-music.js')
| -rwxr-xr-x | src/http-music.js | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/src/http-music.js b/src/http-music.js new file mode 100755 index 0000000..fee1b79 --- /dev/null +++ b/src/http-music.js @@ -0,0 +1,247 @@ +#!/usr/bin/env node + +'use strict' + +const fs = require('fs') + +const { promisify } = require('util') +const loopPlay = require('./loop-play') +const processArgv = require('./process-argv') + +const downloaders = require('./downloaders') +const pickers = require('./pickers') + +const { + filterPlaylistByPathString, removeGroupByPathString, getPlaylistTreeString +} = require('./playlist-utils') + +const readFile = promisify(fs.readFile) + +function setupDefaultPlaylist(file) { + return readFile(file, 'utf-8').then( + text => JSON.parse(text), + err => null + ) +} + +setupDefaultPlaylist('./playlist.json') + .then(async playlist => { + let sourcePlaylist = playlist + let activePlaylist = playlist + + let pickerType = 'shuffle' + let downloaderType = 'http' + 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 + + function requiresOpenPlaylist() { + if (activePlaylist === null) { + throw new Error( + "This action requires an open playlist - try --open (file)" + ) + } + } + + await processArgv(process.argv, { + '-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': async function(util) { + // --open <file> (alias: -o) + // Opens a separate playlist file. + // This sets the source playlist. + + const playlistText = await readFile(util.nextArg(), 'utf-8') + const openedPlaylist = JSON.parse(playlistText) + sourcePlaylist = openedPlaylist + activePlaylist = openedPlaylist + }, + + 'o': util => util.alias('-open'), + + '-clear': function(util) { + // --clear (alias: -c) + // Clears the active playlist. This does not affect the source + // playlist. + + requiresOpenPlaylist() + + activePlaylist = [] + }, + + 'c': util => util.alias('-clear'), + + '-keep': function(util) { + // --keep <groupPath> (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.push(group) + }, + + 'k': util => util.alias('-keep'), + + '-remove': function(util) { + // --remove <groupPath> (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 <picker type> + // Selects the mode that the song to play is picked. + // See pickers.js. + + pickerType = util.nextArg() + }, + + '-downloader': function(util) { + // --downloader <downloader type> + // Selects the mode that songs will be downloaded with. + // See downloaders.js. + + downloaderType = util.nextArg() + }, + + '-play-opts': function(util) { + // --play-opts <opts> + // Sets command line options passed to the `play` command. + + playOpts = util.nextArg().split(' ') + }, + + '-debug-list': function(util) { + // --debug-list + // Prints out the JSON representation of the active playlist. + + requiresOpenPlaylist() + + console.log(JSON.stringify(activePlaylist, null, 2)) + } + }) + + if (activePlaylist === null) { + throw new Error( + "Cannot play - no open playlist. Try --open <playlist file>?" + ) + } + + 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 + } + + let downloader + if (downloaderType === 'http') { + console.log("Using HTTP downloader.") + downloader = downloaders.makeHTTPDownloader() + } else if (downloaderType === 'youtube') { + console.log("Using YouTube downloader.") + downloader = downloaders.makeYouTubeDownloader() + } else if (downloaderType === 'local') { + console.log("Using local file downloader.") + downloader = downloaders.makeLocalDownloader() + } else { + console.error("Invalid downloader type: " + downloaderType) + return + } + + return loopPlay(picker, downloader, playOpts) + } else { + return activePlaylist + } + }) + .catch(err => console.error(err)) |