initial commit

backend/darkice.mjs

@@ -0,0 +1,60 @@
+import p from 'path'
+import split2 from 'split2'
+import { Readable } from 'streamx'
+import { spawn } from 'child_process'
+import { fileURLToPath } from 'url';
+
+const __dirname = p.dirname(fileURLToPath(import.meta.url))
+
+import { action, STREAM_STATUS, LOG_MESSAGE } from './state.mjs'
+
+export class Darkice {
+  constructor (opts = {}) {
+    this.command = opts.command || 'darkice'
+    this.config = opts.config || p.join(__dirname, 'etc', '..', 'darkice.cfg')
+    this.logLevel = 5
+    this.stream = new Readable()
+    this.log = []
+    this.stream.on('data', row => this.log.push(row))
+    this.id = 'darkice'
+  }
+
+  restart () {
+    if (!this.process) return this.start()
+    this.process.once('close', () => {
+      process.nextTick(() => {
+        this.start()
+      })
+    })
+    this.stop()
+  }
+
+  stop () {
+    this.process.kill()
+  }
+
+  start () {
+    if (this.process) return
+    const args = ['-c', this.config, '-v', this.logLevel]
+    this.process = spawn(this.command, args)
+    this.process.stdout.pipe(split2()).on('data', message => {
+      this.stream.push(action(LOG_MESSAGE, { id: this.id, type: 'stdout', message }))
+      // this.stream.push({ type: 'stdout', data })
+    })
+    this.process.stderr.pipe(split2()).on('data', message => {
+      this.stream.push(action(LOG_MESSAGE, { id: this.id, type: 'stdout', message }))
+      // this.stream.push({ type: 'stderr', data })
+    })
+
+    this.process.on('close', () => {
+      this.stream.push(action(STREAM_STATUS, { id: this.id, status: 'stopped' }))
+      this.process = null
+    })
+
+    this.stream.push(action(STREAM_STATUS, { id: this.id, status: 'started' }))
+
+    return new Promise((resolve, reject) => {
+      resolve()
+    })
+  }
+}