1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
#!/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 pickers = require('./pickers')
const {
filterPlaylistByPathString, removeGroupByPathString, getPlaylistTreeString
} = require('./playlist-utils')
const readFile = promisify(fs.readFile)
readFile('./playlist.json', 'utf-8')
.then(plText => JSON.parse(plText))
.then(async playlist => {
let sourcePlaylist = playlist
let curPlaylist = playlist
let pickerType = 'shuffle'
// 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
await processArgv(process.argv, {
'-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
curPlaylist = openedPlaylist
},
'o': util => util.alias('-open'),
'-clear': function(util) {
// --clear (alias: -c)
// Clears the active playlist. This does not affect the source
// playlist.
curPlaylist = []
},
'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`.
const pathString = util.nextArg()
const group = filterPlaylistByPathString(sourcePlaylist, pathString)
curPlaylist.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.
const pathString = util.nextArg()
console.log("Ignoring path: " + pathString)
removeGroupByPathString(curPlaylist, 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.
console.log(getPlaylistTreeString(curPlaylist))
// 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.
console.log(getPlaylistTreeString(curPlaylist, 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 <shuffle|ordered>
// Selects the mode that the song to play is picked.
// This should be used after finishing modifying the active
// playlist.
pickerType = util.nextArg()
},
'-debug-list': function(util) {
// --debug-list
// Prints out the JSON representation of the active playlist.
console.log(JSON.stringify(curPlaylist, null, 2))
}
})
if (willPlay || (willPlay === null && shouldPlay)) {
let picker
if (pickerType === 'shuffle') {
console.log("Using shuffle picker.")
picker = pickers.makeShufflePlaylistPicker(curPlaylist)
} else if (pickerType === 'ordered') {
console.log("Using ordered picker.")
picker = pickers.makeOrderedPlaylistPicker(curPlaylist)
} else {
console.error("Invalid picker type: " + pickerType)
}
return loopPlay(picker)
} else {
return curPlaylist
}
})
.catch(err => console.error(err))
|
