« get me outta code hell

index.js - mtui - Music Text User Interface - user-friendly command line music player
about summary refs log tree commit diff
path: root/index.js
blob: 26f0fbb456793360ab711a63be26eb38fad755c2 (plain)
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
#!/usr/bin/env node

// omg I am tired of code

const { getAllCrawlersForArg } = require('./crawlers')
const AppElement = require('./ui')
const Backend = require('./backend')
const TelnetServer = require('./telnet-server')
const processSmartPlaylist = require('./smart-playlist')
const setupClient = require('./client')

const {
  getItemPathString,
  updatePlaylistFormat
} = require('./playlist-utils')

const {
  ui: {
    Root
  },
  util: {
    ansi,
    CommandLineInterfacer,
    Flushable
  }
} = require('./tui-lib')

const { promisify } = require('util')
const fs = require('fs')
const readFile = promisify(fs.readFile)
const writeFile = promisify(fs.writeFile)

// Hack to get around errors when piping many things to stdout/err
// (from general-util promisifyProcess)
process.stdout.setMaxListeners(Infinity)
process.stderr.setMaxListeners(Infinity)

process.on('unhandledRejection', error => {
  console.error(ansi.setForeground(ansi.C_RED) + "** There was an uncatched error! **" + ansi.resetAttributes())
  console.error("Don't worry, your music files are all okay.")
  console.error("This just means there was a bug in mtui.")
  console.error("In order to verify that the program won't run weirdly, it has stopped.")
  console.error(ansi.setForeground(ansi.C_RED) + "Error stack:" + ansi.resetAttributes())
  console.error(error.stack)
  console.error(ansi.setForeground(ansi.C_RED) + "Error object:" + ansi.resetAttributes())
  console.error(error)
  console.error("(End of error log.)")
  process.stdout.write(ansi.cleanCursor())
  process.exit(1)
})

async function main() {
  const backend = new Backend()

  const result = await backend.setup()
  if (result.error) {
    console.error(result.error)
    process.exit(1)
  }

  backend.on('playing', track => {
    if (track) {
      writeFile(backend.rootDirectory + '/current-track.txt',
        getItemPathString(track))
      writeFile(backend.rootDirectory + '/current-track.json',
        JSON.stringify(track, null, 2))
    }
  })

  const { appElement, dirtyTerminal, flushable, root } = await setupClient({
    backend,
    interfacer: new CommandLineInterfacer(),
    writable: process.stdout
  })

  appElement.on('quitRequested', () => {
    if (telnetServer) {
      telnetServer.disconnectAllSockets('User closed mtui - see you!')
    }
    process.exit(0)
  })

  appElement.on('suspendRequested', () => {
    process.kill(process.pid, 'SIGTSTP')
  })

  process.on('SIGCONT', () => {
    flushable.resizeScreen({lines: flushable.screenLines, cols: flushable.screenCols})
    process.stdin.setRawMode(false)
    process.stdin.setRawMode(true)
    dirtyTerminal()
    root.renderNow()
  })

  const loadPlaylists = async () => {
    for (let i = 2; i < process.argv.length; i++) {
      if (!process.argv[i].startsWith('--')) {
        await appElement.handlePlaylistSource(process.argv[i], true)
      }
    }
  }

  const loadPlaylistPromise = loadPlaylists()

  let telnetServer
  if (process.argv.includes('--telnet-server')) {
    telnetServer = new TelnetServer(backend)
    await telnetServer.listen(1244)
    appElement.attachAsServerHost(telnetServer)
  }

  if (process.argv.includes('--stress-test')) {
    await loadPlaylistPromise

    const w = 80
    const h = 40
    flushable.resizeScreen({lines: w, cols: h})
    root.w = w
    root.h = h
    root.fixAllLayout()

    const XXstress = func => '[disabled]'

    const stress = func => {
      const start = Date.now()
      let n = 0
      while (Date.now() < start + 1000) {
        func()
        n++
      }
      return n
    }

    const nRenderAndFlush = stress(() => {
      root.renderTo(flushable)
      flushable.flush()
    })

    const nFixAllLayout = stress(() => {
      root.fixAllLayout()
    })

    const listings = appElement.tabber.tabberElements
    const lastListing = listings[listings.length - 1]
    const nBuildItems = stress(() => {
      lastListing.buildItems()
    })

    process.stdout.write(ansi.cleanCursor() + ansi.clearScreen() + '\n')
    console.log('# of times we can render & flush:', nRenderAndFlush)
    console.log('# of times we can fix all layout:', nFixAllLayout)
    console.log('# of times we can build items:', nBuildItems)

    process.exit(0)

    return
  }
}

main().catch(err => {
  console.error(err)
  process.exit(1)
})