#!/bin/env python
import sys
import os
import dbus
import random
import time
import speechd
import commands
import simplejson
#import csnd
from dict import Dict
from dict import Word

# My class for key detection
class _Getch:
	"""Gets a single character from standard input.  Does not echo to the screen."""
	def __init__(self):
		try:
			self.impl = _GetchWindows()
		except ImportError:
			self.impl = _GetchUnix()

	def __call__(self): return self.impl()

class _GetchUnix:
	def __init__(self):
		import tty, sys

	def __call__(self):
		import sys, tty, termios
		fd = sys.stdin.fileno()
		old_settings = termios.tcgetattr(fd)
		try:
			tty.setraw(sys.stdin.fileno())
			ch = sys.stdin.read(1)
		finally:
			termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
		return ch

class _GetchWindows:
	def __init__(self):
		import msvcrt

	def __call__(self):
		import msvcrt
		return msvcrt.getch()

class Listenspell():

	def __init__(self):
		self.skill_level = 0
		self.points = 0
		self.words_played = 0
		self.words_correct = 0
		self.config_file = 'ls-speechd-config'
		self.path = "."
		self.speechd_init = False
		self.__speechd_default_config = {'pitch':0, 'rate':0, 'language':'en', 'volume':100, 'voice':'MALE1',
							   'spelling':False, 'punctuation':speechd.PunctuationMode.SOME }
		self.__speechd_config = self.__speechd_default_config
		
	def load_db(self, SQLiteDB):
		if self.path == ".":
			return False
		#print self.path + SQLiteDB
		self.dict_obj = Dict(self.path + SQLiteDB)	#Always intitiate first Dict object then Word object
		self.word_obj = Word()
		

	def set_path(self, path):
		if path != "":
			self.path = path + "/"
		else:
			self.path = path

	def play_sound(self,event):

		os.popen("aplay --quiet " + self.path + event + ".wav")

	def set_skill_level(self,level):
		self.skill_level = level
		self.reset_counters()

	def reset_counters(self):
		self.points = 0
		self.words_played = 0
		self.words_correct = 0
	
	def get_skill_level(self):
		return self.skill_level

	def get_words_played(self):
		return self.words_played

	def get_words_correct(self):
		return self.words_correct

	def get_points(self):
		return self.points

	def ans_correct(self, wordid):
		self.play_sound("correct")
		self.points = self.points + self.skill_level
		self.words_correct = self.words_correct + 1
		self.word_obj.update_score(wordid)

	def ans_incorrect(self, wordid):
		self.play_sound("incorrect")
		self.word_obj.update_score(wordid, "incorrect")

	def clear_screen(self,numlines=100):
		"""Clear the console.
        numlines is an optional argument used only as a fall-back.
        """
		import os
		if os.name == "posix":
			# Unix/Linux/MacOS/BSD/etc
			os.system('clear')
		elif os.name in ("nt", "dos", "ce"):
			# DOS/Windows
			os.system('CLS')
		else:
			# Fallback for other operating systems.
			print '\n' * numlines 

	def load_wordid(self, num_words = 0):
		temp_list = []
		self.wordid_list = []
		temp_list = self.dict_obj.get_random_wordid(self.skill_level, num_words)
		for(wordid, ) in temp_list:
			self.wordid_list.append(wordid)
		return self.wordid_list

	def get_word_info(self,wordid, attribute):
		if self.word_obj.get_wordid() != wordid:
			self.word_obj.__init__(identifier = "wordid", value= wordid)
			self.words_played = self.words_played + 1

		if attribute == "def":
			return self.word_obj.get_def()
		elif attribute == "usage":
			return self.word_obj.get_usage()
		elif attribute == "word":
			return self.word_obj.get_word()  
		elif attribute == "phnm":
			phnm = self.word_obj.get_phoneme()
			if phnm == None:
				phnm = self.__get_phoneme(self.word_obj.get_word())
				return phnm
			else:
				(phoneme, is_correct) = phnm
				return phoneme
		else: return False
		
	def __get_phoneme(self, word = None):
		if word == None:
			return False
		phnm = commands.getoutput("/usr/bin/espeak -q -x " + word)
		self.word_obj.update_phoneme(phnm)
		return phnm
		
	
	def get_speechd_config(self, default =0):
		if default == 1:
			return self.__speechd_default_config
		else:
			return self.__speechd_config
		
	
	def load_speechd_config(self):
		try:
			fp = open(self.path + self.config_file)
		except IOError:
			#File doesn't exist, create it and write default config
			fp = open(self.path + self.config_file, 'w', 0)
			speech_config = self.get_speechd_config(1)
			simplejson.dump(speech_config, fp)
		else:
			speech_config = simplejson.load(fp)
		for attr in speech_config:
			self.speechd_config(attr, speech_config[attr])
		fp.close()
		return speech_config
		
		
		
	def __start_speechd(self):  
		try:
			self.client = speechd.SSIPClient('spd-test')
			self.client.set_output_module('espeak')
			self.client.set_language('en')
			self.client.set_punctuation(speechd.PunctuationMode.SOME)
			self.speech_state = None
		except dbus.exceptions.DBusException:
			print "Speech Dispatcher is not turned on."
			return False
		self.speechd_init = True
		
	def __set_speechd_config(self, attribute = None, value = None, mode = 'one', config_obj = None):
		if mode == 'one':
			if attribute == None or value == None:
				return False
			#print attribute + ":" + str(value)
			self.__speechd_config[attribute] = value
			fp = open(self.path + self.config_file, 'w', 0)
			simplejson.dump(self.__speechd_config, fp)
			fp.close()
		elif mode == 'all':
			if config_obj == None:
				return False
			fp = open(self.path + self.config_file, 'w', 0)
			self.__speechd_config = config_obj
			simplejson.dump(self.__speechd_config, fp)
			fp.close()
			
	def speechd_config(self, attribute = None, data = None):
		
		if attribute == None or data == None:
			return False
		
		if self.speechd_init == False:
			if self.__start_speechd() == False:
				return False
		
		attribute_list = ['pitch', 'rate', 'volume', 'voice', 'output_module', 
						  'language', 'punctuation', 'spelling', 'synthesis_voice']
		
		if attribute in attribute_list:
			try:
				self.__set_speechd_config(attribute, data)
				if attribute == "pitch":
					self.client.set_pitch(int(data)) #-100 to 100
				elif attribute == "rate":
					self.client.set_rate(int(data)) # -100 to 100
				elif attribute == "volume":
					self.client.set_volume(int(data))#-100 to 100
				elif attribute == "voice":
					self.client.set_voice(str(data))#(FE)MALE(1,2,3), CHILD_(FE)MALE
				elif attribute == "output_module":
					self.client.set_output_module(str(data))
				elif attribute == "language":
					self.client.set_language(str(data))
				elif attribute == "punctuation":
					self.client.set_punctuation(data)
				elif attribute == "spelling":
					self.client.set_spelling(bool(data)) # True or False
				elif attribute == "synthesis_voice":
					self.client.set_synthesis_voice(str(data))#self.client.list_synthesis_voices()
			except AssertionError, e:
				print "Assertion Error: " + str(e) + ":" + str(attribute) + ":" + str(data)
				return False
		else: return False
		
	def __speechd_callback(self,callback_type):
		self.speech_state = callback_type

	def say_text(self, text, wait= True):
		#wait: to wait for the text to be spoken or not
		#os.popen("espeak " + text)
		if self.speechd_init == False:
			if self.__start_speechd() == False:
				return False

		text = str(text)
		self.speech_state = None
				
		self.client.speak(text, callback=self.__speechd_callback,event_types=(speechd.CallbackType.BEGIN, 
														speechd.CallbackType.CANCEL,
														speechd.CallbackType.END))
		if wait == True:
			while(self.speech_state != "end"):
				time.sleep(1)
			
	

	def get_key(self):
		for longestinput in range(15):
			inkey = _Getch()
			for i in xrange(sys.maxint):
				k=inkey()
				if k<>'':break
				elif k == '\r': break
			return k

	def exit_game(self):
		self.word_obj.exit_game()
		self.dict_obj.exit_game()
		self.say_text("goodbye")
		self.client.close()
		sys.exit()