#!/usr/bin/env python

import utility
import constants

class Letter:
	''' Letter class. Represents a letter on the gameboard.
	'''
	def __init__(self, character = "", score = 0):
		''' Initialize the letter
			@param character: The string representing the letter.
		'''
		self.__score = score
		self.__is_blank = False
		self.set_character(character)
	
	
	
	def set_character(self, character):
		''' Set the letter string
		   
		    @param character: the new letter string value	
		'''
		if(character == ""):
			self.__is_blank = True
		self.__character = character
	
	def set_is_blank(self, is_blank):
		''' Set is_blank property of the letter
		
			@param is_blank: True or False.
		'''
		self.__is_blank = is_blank
	
	def set_score(self, score):
		''' Set the score of the letter.
		
			@param score: the new score value of the letter.
		'''
		self.__score = score
	
	def get_character(self):
		''' Get the letter string
		
		    @return: the string representation of this letter.
		'''
		return self.__character
	
	def get_score(self):
		''' Get the letter score.
		
		    @return: the score of this letter.
		'''
		if(self.is_blank()):
			return 0
		return self.__score
	
	def is_blank(self):
		''' Check if the letter is blank
		
			@return: True if the letter is a blank letter.
		'''
		return self.__is_blank
		
	def __eq__(self, other):
		''' Check if this Letter equals another Letter
		
			@param other: Other letter
			@return: True if the Letter strings are the same
		'''
		# To do controlar los acentos.
		if(isinstance(other, Letter)):
			a = utility.get_unicode(self.get_character())
			b = utility.get_unicode(other.get_character())
			if a == b:
				return True
			elif ((a != b) and (self.is_blank() == True and other.is_blank() == True)):
				return True
		return false
	
	def __neq__(self, other):
		''' Check if this Letter does not equal another Letter
		
			@param other: Other letter
			@return: True if the Letter strings are not the same
		'''
		# To do controlar los acentos.
		if(isinstance(other, Letter)):
			if(self == other):
				return False
		return True
	
	def __repr__(self):
		''' Return a string formatted as follow:
			Letter_String: Score
			
			@return: string representation of this Letter.
		'''
		return self.get_character() + ": "+str(self.get_score()) 


class Board:
	''' Board class. Represents the gameboard.
	'''
	def __init__(self, size = constants.DEFAULT_BOARD_SIZE):
		''' Initialized the board
			
			@param size: the size of this board. For example 15x15
		'''
		
		self.__size = size
		self.__board = utility.create_board(size)
	
	def get_size(self):
		''' get the size of this board
		
			@return: the size.
		'''
		return self.__size
	
	def set_size(self, size):
		''' set the size value of this board
		
			@param: the new size value.
		'''		
		self.__size = size
		
		
	def get_value_at(self, row, column):
		''' Get the value at the specified position [row][column] on the
			board.
			
			@param row: row on the board
			@param column: column on the board			
			@return: The value at the specificied position.
		'''
		return self.__board[row][column]
	
	def set_value_at(self, value, row, column):
		''' Set the value at the specified position [row][column] on the
			board.
			
			@param value: new value
			@param row: row on the board
			@param column: column on the board
		'''		
		self.__board[row][column] = value
		
	def get_tile_style(self, row, column):
		''' Get the style of the tile  at the specified position 
		    [row][column] on the board.
			
			@param row: row on the board
			@param column: column on the board			
			@return: The style of the tile at the specificied position.
		'''
		# implementar....
	
	def get_tile_score(self, row, column):
		''' Get the score of the tile  at the specified position 
		    [row][column] on the board.
			
			@param row: row on the board
			@param column: column on the board			
			@return: The score of the tile at the specificied position.
		'''
		# implementar....
	
	def is_tile_empty(self, row, column):
		''' Check if the tile is empty  at the specified position 
		    [row][column] on the board.
			
			@param row: row on the board
			@param column: column on the board			
			@return: True or False
		'''
		return  (self.get_value_at(row, column) == "")				 	
		


class Move:
	''' Move class represents a move made by a player.
	    The Move is a list of tuples containing 
	    (letter, x-position, y-position) for all Letters in the Move.	
	'''	
	def __init__(self, move = None):
		self.__score = 0
		self.__move = []
		self.__has_blank = False
		if move != None:
			for l, x, y in move:
				self.add_move(l, x ,y)
	
	def has_blank(self):
        '''
        Check whether this Move contains a blank letter
        
        @return: True if this Move contains a blank Letter
        '''	
		return self.__has_blank
		
	def add_move(self, letter, x, y):
		''' Add a new move
			
			@param letter: the Letter
			@param x: x-position on the board
			@param y: y-position on the board
		'''
		if not self.has_blank():
			self.__has_blank = letter.is_blank()
		move.append((letter, x , y))
	
    def remove_move(self, letter, x, y):
        ''' Remove move
			
			@param letter: the Letter
			@param x: x-position on the board
			@param y: y-position on the board
        '''
        self.move.remove((letter,x,y))

	def get_score(self):
		''' Get the score for the move
			
			@return: the score for the move
        '''
		return self.__score
	
	def set_score(self, score):
		''' Set the score 
			
			@param score: the score 
        '''		
		self.__score = score
	
	def length(self):
        '''
        Get number of tuples in the Move.
        
        @return: Number of tuples in the move.
        '''
        return len(self.move)
    
    def clear(self):
		''' Clear the move '''
		move = []
	
	def get_move(self, index):
		''' Get the Move at the specified index
		
			@param index: index
			@return: the Move at the specified index
		'''
		return move[index]
		
	def get_moves(self):
		''' Get the list of moves
		
			@return: the list of  moves
		'''
		return self.__move	
	
	def get_first_move(self):
		''' Get the first move'''
		return get_move(0)
		
	def is_valid(self):
		''' Check whether this move is valid
			
			@return: True if the move is valid
		'''
		# implementar....
	
	def is_horizontal(self):
        ''' Check whether the Move is horizontal.
        
			@return: True if all Letters in the move are arranged horizontally.
        '''		
		if self.is_empty():
			return False
			
		l, x, y = get_first_move()
		if not is_empty():
			for _l, _x, _y in self.get_moves():
				if _x != x:
					return False
			return True
		
	
	def is_vertical(self):
        ''' Check whether the Move is vertical.
        
			@return: True if all Letters in the move are arranged vertically.
        '''		
		if self.is_empty():
			return False
		
		l, x, y = get_first_move()
		if not is_empty():
			for _l, _x, _y in self.get_moves():
				if _y != y:
					return False
			return True
	
	def calculate_score(self):
		''' Calculates the score for the move
			
			@return : the score for the move.
		'''
		# implementar....
		
    def isEmpty(self):
        ''' Check whether the Move is empty
        
			@return: True if the Move has no Letters in it.
        '''
        
        return self.length() == 0
        
class Bag:
    ''' Bag represents a "Bag" of Letters. It contains a dictionary
		named __bag_letters, formatted as follow
		{"Letter" : (count, score)}
	'''	
	def __init__(self, lenguage= constants.DEFAULT_LENGUAGE):
		self.__bag_letters = {}
		self.__bag_letters = utility.get_letters_from_file(lenguage)
		
		
	
	def remove_letters(self, amount = constants.DEFAULT_AMOUNT_LETTERS):
		''' Removes letters from the bag
			
			@param size: the amount of letters that are going to be removed
			@return: the letters removed.
		'''
		removed = []
		
		
		# implementar....
		
		return removed
	
	def add_letters(self, letters):
		''' Add letters to the bag
			
			@param letters: the list of Letters that are going to be added
		'''		
		# implementar....
	
	def get_bag_letters(self):
		''' Get the bag of letters '''
		return self.__bag_letters