import os
import subprocess
from http.server import HTTPServer, BaseHTTPRequestHandler

FILENAME = 'currentRecording.mp3'
VLC_PATH = "C:\\Program Files (x86)\\VideoLAN\VLC\\vlc.exe"
old_recording = None
old_name = None
should_save = False


def saved_name(name):
    return "recordings\\" + name.replace(" ", "_") + ".mp3"


def generate_vlc_record_cmd(url, filename):
    return [VLC_PATH, "-vvv", url, "-I", "dummy", "--sout", "#transcode{acodec=mp3,ab=128}:file{dst=" + filename + "}"]


def on_new_media(url, name):
    global old_recording, should_save, old_name

    if old_recording:
        print("Finished old recording")
        old_recording.terminate()
        old_recording.wait()

        if should_save:
            print("Saving old recording")
            os.rename(FILENAME, saved_name(old_name))

    should_save = False
    old_recording = subprocess.Popen(generate_vlc_record_cmd(url, FILENAME))
    old_name = name


class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):

    def do_GET(self):
        global should_save
        self.send_response(200)
        self.end_headers()
        if self.path == "/":
            try:
                stream_url = self.headers['url']
                current_name = self.headers['name']
                print("Received new media:", stream_url, current_name)
                on_new_media(stream_url, current_name)
            except KeyError:
                print("problem with http request")
        elif self.path == "/save":
            print("Received a save request")
            should_save = True


httpd = HTTPServer(('localhost', 8000), SimpleHTTPRequestHandler)
httpd.serve_forever()