#!/usr/bin/env python2
# -*- coding: utf-8-*-

import os
import sys
import shutil
import logging

import yaml
import argparse

from client import tts
from client import stt
from client import jasperpath
from client import diagnose
from client.conversation import Conversation

# Add jasperpath.LIB_PATH to sys.path
sys.path.append(jasperpath.LIB_PATH)

parser = argparse.ArgumentParser(description='Jasper Voice Control Center')
parser.add_argument('--local', action='store_true',
                    help='Use text input instead of a real microphone')
parser.add_argument('--no-network-check', action='store_true',
                    help='Disable the network connection check')
parser.add_argument('--diagnose', action='store_true',
                    help='Run diagnose and exit')
parser.add_argument('--debug', action='store_true', help='Show debug messages')
parser.add_argument('--echo', action='store_true', help='Echo back what was recorded')
args = parser.parse_args()

if args.local:
    from client.local_mic import Mic
else:
    from client.mic import Mic


class Jasper(object):
    def __init__(self):
        self._logger = logging.getLogger(__name__)

        # Create config dir if it does not exist yet
        if not os.path.exists(jasperpath.CONFIG_PATH):
            try:
                os.makedirs(jasperpath.CONFIG_PATH)
            except OSError:
                self._logger.error("Could not create config dir: '%s'",
                                   jasperpath.CONFIG_PATH, exc_info=True)
                raise

        # Check if config dir is writable
        if not os.access(jasperpath.CONFIG_PATH, os.W_OK):
            self._logger.critical("Config dir %s is not writable. Jasper " +
                                  "won't work correctly.",
                                  jasperpath.CONFIG_PATH)

        # FIXME: For backwards compatibility, move old config file to newly
        #        created config dir
        old_configfile = os.path.join(jasperpath.LIB_PATH, 'profile.yml')
        new_configfile = jasperpath.config('profile.yml')
        if os.path.exists(old_configfile):
            if os.path.exists(new_configfile):
                self._logger.warning("Deprecated profile file found: '%s'. " +
                                     "Please remove it.", old_configfile)
            else:
                self._logger.warning("Deprecated profile file found: '%s'. " +
                                     "Trying to copy it to new location '%s'.",
                                     old_configfile, new_configfile)
                try:
                    shutil.copy2(old_configfile, new_configfile)
                except shutil.Error:
                    self._logger.error("Unable to copy config file. " +
                                       "Please copy it manually.",
                                       exc_info=True)
                    raise

        # Read config
        self._logger.debug("Trying to read config file: '%s'", new_configfile)
        try:
            with open(new_configfile, "r") as f:
                self.config = yaml.safe_load(f)
        except OSError:
            self._logger.error("Can't open config file: '%s'", new_configfile)
            raise

        try:
            stt_engine_slug = self.config['stt_engine']
        except KeyError:
            stt_engine_slug = 'sphinx'
            logger.warning("stt_engine not specified in profile, defaulting " +
                           "to '%s'", stt_engine_slug)
        stt_engine_class = stt.get_engine_by_slug(stt_engine_slug)

        try:
            slug = self.config['stt_passive_engine']
            stt_passive_engine_class = stt.get_engine_by_slug(slug)
        except KeyError:
            stt_passive_engine_class = stt_engine_class

        try:
            tts_engine_slug = self.config['tts_engine']
        except KeyError:
            tts_engine_slug = tts.get_default_engine_slug()
            logger.warning("tts_engine not specified in profile, defaulting " +
                           "to '%s'", tts_engine_slug)
        tts_engine_class = tts.get_engine_by_slug(tts_engine_slug)

        # Initialize Mic
        self.mic = Mic(tts_engine_class.get_instance(),
                       stt_passive_engine_class.get_passive_instance(),
                       stt_engine_class.get_active_instance(),
                       echo=args.echo)

        # Squirell away stt_engine_class
        self.stt_engine_class = stt_engine_class

    def run(self):
        if 'first_name' in self.config:
            salutation = ("How can I be of service, %s?"
                          % self.config["first_name"])
        else:
            salutation = "How can I be of service?"
        # self.mic.say(salutation)

        # conversation = Conversation("JASPER", self.mic, self.config)
        # conversation = Conversation("GREW", self.mic, self.config)
        conversation = Conversation("GREW", self.mic, self.config, self.stt_engine_class)
        conversation.handleForever()

if __name__ == "__main__":

    print("*******************************************************")
    print("*                   Dial a Grue 2.0                   *")
    print("*           (c) 2016-2020  Mitch Patenaude            *")
    print("*            Derived in large part from               *")
    print("*             JASPER - THE TALKING COMPUTER           *")
    print("* (c) 2015 Shubhro Saha, Charlie Marsh & Jan Holthuis *")
    print("*******************************************************")

    logging.basicConfig(format='%(asctime)s %(levelname)s %(name)s(%(threadName)s) %(message)s')
    logger = logging.getLogger()
    logger.getChild("client.stt").setLevel(logging.INFO)

    if args.debug:
        logger.setLevel(logging.DEBUG)

    #if not args.no_network_check and not diagnose.check_network_connection():
    #    logger.warning("Network not connected. This may prevent Jasper from " +
    #                   "running properly.")

    if args.diagnose:
        failed_checks = diagnose.run()
        sys.exit(0 if not failed_checks else 1)

    try:
        app = Jasper()
    except Exception:
        logger.error("Error occured!", exc_info=True)
        sys.exit(1)

    app.run()
