2 files changed, 117 insertions, 0 deletions
diff --git a/common/misc.py b/common/misc.py
new file mode 100755
index 0000000..86798b8
--- /dev/null
+++ b/common/misc.py
@@ -0,0 +1,62 @@
+# -*- 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
+	"""
+	# 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) or 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
+		return target.isdigit()
+
+	# 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
+	return False
+
+
+#
+class HandleError:
+	"""
+	simple XMPP error / exception class formating the error condition
+	"""
+	def __init__(self, error, key, target):
+		# init all necessary variables
+		self.text = error.text
+		self.condition = error.condition
+		self.key = key
+		self.target = target
+
+	def report(self):
+		# return the formatted result string to the user
+		text = "%s. %s %s resulted in: %s" % (self.text, self.key, self.target, self.condition)
+
+		return text
diff --git a/common/strings.py b/common/strings.py
new file mode 100644
index 0000000..6f1b629
--- /dev/null
+++ b/common/strings.py
@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+from random import randint
+
+
+class StaticAnswers:
+	"""
+	collection of callable static/ semi-static strings
+	"""
+	def __init__(self, nick=""):
+		self.nickname = nick
+		self.helpfile = {
+			'help':		'!help -- display this text',
+			'version':	'!version domain.tld  -- receive XMPP server version',
+			'uptime':	'!uptime domain.tld -- receive XMPP server uptime',
+			'contact':	'!contact domain.tld -- receive XMPP server contact address info',
+			'xep': 		'!xep XEP Number -- recieve information about the specified XEP'
+		}
+		self.possible_answers = {
+			'1': 'I heard that, %s.',
+			'2': 'I am sorry for that %s.',
+			'3': '%s did you try turning it off and on again?'
+		}
+		self.error_messages = {
+			'1': 'not reachable',
+			'2': 'not a valid target'
+		}
+		self.keywords = {
+			"keywords": ["!help", "!uptime", "!version", "!contact", "!xep"],
+			"domain_keywords": ["!uptime", "!version", "!contact"],
+			"no_arg_keywords": ["!help"],
+			"number_keywords": ["!xep"]
+		}
+
+	def keys(self, key=""):
+		# if specific keyword in referenced return that
+		if key in self.keywords.keys():
+			return self.keywords[key]
+
+		# in any other case return the whole dict
+		return self.keywords["keywords"]
+
+	def gen_help(self):
+		helpdoc = "\n".join(['%s' % value for (_, value) in self.helpfile.items()])
+		return helpdoc
+
+	def gen_answer(self):
+		possible_answers = self.possible_answers
+		return possible_answers[str(randint(1, possible_answers.__len__()))] % self.nickname
+
+	def error(self,code):
+		try:
+			text = self.error_messages[str(code)]
+		except KeyError:
+			return 'unknown error'
+		return text