# -*- coding: utf-8 -*-
#
#   Class: Audio
#                - Convert Text to Speech using espeak
#                - Convert Audio Input into Text using CMUSphinx and react on commands - offline
#
# ToDo:
#  https://wiki.python.org/moin/PythonForArtificialIntelligence
#  https://github.com/simpleai-team/simpleai
#
#   Version: 0.1
#   Creator: meigrafd
#   Copyright (C) 2016 by meiraspi@gmail.com published under the MIT License
#
# Requires PyAudio.
import os
import speech_recognition
from espeak import espeak
from time import sleep, ctime


class AudioSpeakClass(object):
    """
    Text to Speech
    """
    def __init__(self, lang='de', speed=150):
        self.lang = lang
        self.speed = speed

    def tts(self, text):
        espeak.speed = self.speed
        espeak.set_voice(self.lang)
        espeak.synth(text)


class AudioCommandClass(object):
    """
    Speech to Text and execute Commands
    """
    def __init__(self, speak=None):
        self.speak = speak
        self.recognizer = speech_recognition.Recognizer()
        with speech_recognition.Microphone() as source:
            self.recognizer.adjust_for_ambient_noise(source)
            self.mic = source
        # start listening in the background (note that we don't have to do this inside a `with` statement)
        self.stop_listening = self.recognizer.listen_in_background(self.mic, self.callback)

    def stop(self):
        self.stop_listening()

    # this is called from the background thread
    def callback(self, recognizer, audio):
        # received audio data
        try:
            data = recognizer.recognize_sphinx(audio)
            print("You said: " + data)
            self.jarvis(data)
        except speech_recognition.UnknownValueError:
            print("Could not understand audio")
        except speech_recognition.RequestError as e:
            print("Recog Error; {0}".format(e))

    def jarvis(self, data):
        if "how are you" in data:
            self.speak.tts("I am fine")

        elif "what time is it" in data:
            self.speak.tts(ctime())



def run():
    audio_command = AudioCommandClass(speak=AudioSpeakClass())
    try:
        while True:
            sleep(0.5)
    except (KeyboardInterrupt, SystemExit):
        pass

# EOF