#!/usr/bin/env python3
"""
Music streaming.
"""
import subprocess

from flask import Flask, Response, render_template

FFMPEG_CMD = [
	'ffmpeg', '-y',
	'-loglevel', 'panic',
	'-i', '',
	'-codec:a', 'libopus',
	'-b:a', '64k',
	'-f', 'opus',
	'-'
]

app = Flask(__name__)

@app.route('/')
def index():
	"""Main index page."""
	track = "01 - Balls to the Wall.flac"
	return render_template('index.html', track=track)


@app.route('/stream/<track>')
def stream(track):
	"""View for the raw audio file."""
	FFMPEG_CMD[5] = track

	def generate():
		with subprocess.Popen(FFMPEG_CMD, stdout=subprocess.PIPE) as proc:
			data = proc.stdout.read(1024)
			while data:
				yield data
				data = proc.stdout.read(1024)
	return Response(generate(), mimetype="audio/ogg")


if __name__ == "__main__":
	app.run(host='0.0.0.0', port=5150)