# -*- coding: utf-8 -*-
import validators
from common.strings import StaticAnswers


def deduplicate(reply):
	"""
	list deduplication method
	:param list reply: list containing non unique items
	:return: list containing unique items
	"""
	reply_dedup = list()
	for item in reply:
		if item not in reply_dedup:
			reply_dedup.append(item)

	return reply_dedup


def validate(keyword, target):
	"""
	validation method to reduce malformed querys and unnecessary connection attempts
	:param keyword: used keyword
	:param target: provided target
	:return: true if valid
	"""
	# check if keyword is in the argument list
	if keyword in StaticAnswers().keys():

		# if keyword in domain_keywords list
		if keyword in StaticAnswers().keys('domain_keywords'):
			# if target is a domain / email return True
			if validators.domain(target):
				return True
			elif validators.email(target):
				return True

		# check if keyword is in number_keyword list
		elif keyword in StaticAnswers().keys('number_keywords'):
			# if target only consists of digits return True
			if target.isdigit():
				return True

		# if keyword is in no_arg_keywords list return True
		elif keyword in StaticAnswers().keys("no_arg_keywords"):
			return True

	# if the target could not be validated until this return False
	else:
		return False


#
class HandleError:
	"""
	simple XMPP error / exception class formating the error condition
	"""
	def __init__(self, error, key, target):
		# init all necessary variables
		self.error = error
		self.key = key
		self.target = target

	def report(self):
		# return the formatted result string to the user
		condition = self.error.condition
		text = "There was an error requesting %s's %s : %s" % (self.target, self.key, condition)

		return text