rickroll.py

from flask import Flask, request
app = Flask(__name__)

from twilio import twiml

# Where we're storing all our audio files.
url_base = "https://s3-us-west-2.amazonaws.com/true-commitment/"

_original = {
    'description': "The Original",
    'by': "Rick Astley",
    'url': url_base + "01-NeverGonnaGiveYouUp.mp3"
}

# Played on timeout
goodbye = "Thank you for calling the National Rick Astley Hotline. Goodbye."

tunes = [
    None,   # Zero is always the menu
    {
        'src': "https://www.youtube.com/watch?v=b1WWpKEPdT4",
        'description': "Eight bit",
        'by': "Kita Khyber",
        'url': url_base + "8-Bit%20Rick%20Roll.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=q-9KqwCFDJs",
        'description': "Dubstep",
        'by': "Crystalize",
        'url': url_base + "Rick-Astley-Dubstep.mp3",
    },
    {
        # Not sure who this is by
        'src': "https://vimeo.com/64322245",
        'description': "Daft Punk",
        'url': url_base + "Rick%20Roll%20Never%20Gonna%20Give%20You%20Up%20%28Daft%20Punk%20remix%29.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=oT3mCybbhf0",
        'description': "Uh-vee-chee",  # Avicii, but Twilio gets confused by that.
        'by': "Nils",
        'url': url_base + "AVICII%20and%20RICK%20ASTLEY%20-%20Never%20Gonna%20Wake%20Up%20%28Mashup-Remix%29.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=Eupg7rZ9AUY",
        'description': "Drum and bass",
        'by': "Wave-shapers",
        'url': url_base + "Rick%20Astley%20-%20Never%20Gonna%20Give%20You%20Up%20%28WAV35HAPERS%20Remix%29.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=KykFbfCMizo",
        'description': "E.D.M.",
        'by': "Riot", # R!OT
        'url': url_base + "Rick%20Astley%20-%20Never%20Gonna%20Give%20You%20Up%20%28R%21OT%20Remix%29.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=GL-8XuoxuaQ",
        'description': "Metal",
        'by': "Andy Rehfeldt",
        'url': url_base + "Rick%20Astley-Never%20Gonna%20Give%20You%20Up%28Metal%20Version%29.mp3",
    },
    {
        'src': "https://www.youtube.com/watch?v=snC4ZtW9dHI",
        'description': "Nirvana",
        'by': "i. v. lad e. o", # ivladeo
        'url': url_base + "Rick%20Astley%20%20%20Nirvana%20Mashup%20%20%20Never%20gonna%20give%20your%20teen%20spirit%20up.mp3",
    },
    _original
]

def play_tune(tune):
    """Takes a tune dictionary, returns a TwiML response that plays it."""

    # If somehow we're called with no argument, which could happen if we had
    # a short menu or multi-key input.
    if tune is None:
        return play_menu()

    response = twiml.Response()

    # By calling functions on gather, digits can be pressed during the song
    # playback *and* the menu afterwards.
    gather = response.gather(numDigits=1, timeout=10)
    gather.play(tune['url'])
    gather.say(generate_menu())
    
    # Our goodbye triggers after gather times out.
    response.say(goodbye)

    return response

def play_menu():
    """Plays the menu"""

    response = twiml.Response()

    gather = response.gather(numDigits=1, timeout=10)
    gather.say(generate_menu())

    response.say(goodbye)

    return response

@app.route("/", methods = ['GET','POST'])
def original():

    selection = request.values.get('Digits')

    # Without a selection, play the original
    if selection is None:
        return str(play_tune(_original))

    # With a selection try to turn into an index we can use.
    # There may be a '#' or '*', so we'll default to '0'
    # (our menu) if we fail to parse as an int
    try:
        selection = int(selection)
    except ValueError:
        selection = 0

    # Zero is always our menu.
    if selection == 0:
        return str(play_menu())

    # Otherwise load the song they want, with a default of the original
    # song if they select something outsie our array bounds.
    tune = _original

    try: tune = tunes[selection]
    except Exception: pass

    return str(play_tune(tune))

def generate_menu():
    menu = "Welcome to the national Rick Astley hotline. You may make your selection at any time.\n"

    for idx, song in enumerate(tunes):

        if song is None:
            continue

        menu += "To listen to {}".format(song['description'])

        if 'by' in song:
            menu += " by {}".format(song['by'])

        menu += ", press {}.\n".format(idx)

    menu += "To hear these options again, press zero.\n"
    menu += "If you do not wish to be rick-rolled again, please hang up now."

    return menu

if __name__ == "__main__":
    app.run()