#!/usr/bin/env python
#TODO: funktion, die aus parametern schoene listen macht.

import string

class KeywordGenerator:
	def __init__(self):
		import string,sys
		return

	def add_prefix_to_strings(self,prefix,stringlist):
		"""gets a string and a list of strings
		returns a list of strings each prefixed with given string."""
		ret = []
		for item in stringlist:
			ret.append(prefix+item)
		return ret

	def quotes_and_braces(self,keywords):
		"""gets a string with keywords, returns 
		given string
		"given string"
		[given string] 
		"""
		ret = '%s\n' % keywords
		ret += '"%s"\n' % keywords
		ret += '[%s]\n' % keywords
		return ret

	def arg_string_to_list(self,s):
		"""gets a string.
		removes all occurences of " and splits with , as separator."""
		s = s.replace('"','')
		ret = s.split(',')
		return ret

	def generate_keywords(self,l1,l2,l3):
		"""
		gets 3 lists of keyword parts.
		returns a string containing every possible combination of above 
		keywords and its generated variants from quotes_and_braces."
		"""
		ret = ""
		list1 = self.arg_string_to_list(l1)
		list2 = self.arg_string_to_list(l2)
		list3 = self.arg_string_to_list(l3)

		for list2item in list2:
			tmplist1 = []
			tmplist1 = self.add_prefix_to_strings(list2item+" ",list3)
			for list1item in list1:
				tmplist2 = []
				tmplist2 = self.add_prefix_to_strings(list1item+" ",tmplist1)
				for tmplist2item in tmplist2:
					ret += self.quotes_and_braces(tmplist2item)
				ret += "\n"		
		return ret[:-3]+ string.replace(ret[-3:],"\n","")#cut the tailing '\n\n\n'
			
'''
	def test():
		#sample data


		#test quotes_and_brace	
		keywords = "fair clothing"
		expected_result = """fair clothing\n"fair clothing"\n[fair clothing]\n"""
		if quotes_and_braces(keywords) != expected_result:
			raise "test of quotes_and_braces() failed!"
		
		#test add_prefix_to_strings
		pref = "fair "
		strlist = ["clothing","clothings"]
		expected_result = ["fair clothing","fair clothings"]
		if add_prefix_to_strings(pref,strlist) != expected_result:
			raise "test of add_prefix_to_strings() failed!"
		
		#test  generate_keywords
		list1 = ["fair"]
		list2 = ["clothing","clothings"]
		list3 = ["buy"]
		expected_result = """fair clothing buy\n"fair clothing buy"\n[fair clothing buy]\n\n\nfair clothings buy\n"fair clothings buy"\n[fair clothings buy]\n\n\n"""

		if generate_keywords(list1,list2,list3) != expected_result:
			raise "test of generate_keywords() failed!"
		
		#test arg_string_to_list(s)
		s = '"clothing,clothings"'
		expected_result = ['clothing', 'clothings']
		if arg_string_to_list(s) != expected_result:
			raise "test of arg_string_to_list() failed!"
		
		#test get_arguments()
		(list1,list2,list3) = get_arguments()
		
		
if __name__ == "__main__":
	#test()
	if len(sys.argv) !=4 :
		print ' %s is a script for generating keyword lists suitable for google adwords.' % sys.argv[0]
		print ' usage: %s "part1,alterative part1" "part2, another part2" ",verb"' % sys.argv[0]
	else:
		(list1,list2,list3) = get_arguments()
		print generate_keywords(list1,list2,list3)
'''