class Py3CX:
	class _ApiCallBuilder:
		apibase='api'
		uri='{}/{}/{}'
		# TODO: check login URI component
		login={
			'uri':'',
			'method':'POST',
			'expect':200
		}
		# Returns current username, displayed initial(s), 3CX phone system version, current roles, email addresses and information about privileges and enabled features
		CurrentUser={
			'uri':'CurrentUser',
			'method':'GET',
			'expepct':200
		}
		# Returns a list of current calls, including active trunk where available
		ActiveCalls={
			'uri':'activeCalls',
			'method':'GET',
			'expepct':200
		}
		SystemStatus={
			'uri':'SystemStatus',
			'method':'GET',
			'expepct':200
		}
		# Returns event log entries; optional ?count=INT argument to retrieve specific number of events
		EventLog={
			'uri':'{}/getEventLog'.format(SystemStatus['uri']),
			'method':'GET',
			'expect':200
		}
		# Returns bytes of recording space used and allocated by quota, also returns recording states.
		SystemStatusAdditional={
			'uri':'{}/AdditionalStatus'.format(SystemStatus['uri']),
			'method':'GET',
			'expect':200
		}
		# Returns state of system health (whether firewall, configured trunks and phones meet 3CX support baselines)
		SystemStatusHealth={
			'uri':'{}/GetSingleStatus'.format(SystemStatus['uri']),
			'method':'GET',
			'expect':200
		}
		# TODO: API call 'SystemStatus/getDbInformation'
		# TODO: API call 'TrunkList'
		# TODO: API call 'InboundRulesList'
		# TODO: API call 'OutboundRuleList'
		# TODO: API call 'ActivityLog'
		# TODO: API call 'ActivityLog/getKeepDays'
		# TODO: API call 'ActivityLog/getKeepLogs'
		# TODO: API call 'ActivityLog/getLogLevel'
		# TODO: API call 'BackupAndRestoreList'
		# TODO: API call 'CallLog'
		# TODO: API call 'capture/getInterfaces'
		# TODO: API call 'CustomParametersList'
		# TODO: API call 'ExtensionList'
		# TODO: API call 'GroupList'
		# TODO: API call 'IpBlackList'
		# TODO: API call 'IVRList'
		# TODO: API call 'License'
		# TODO: API call 'NumberBlackList'
		# TODO: API call 'NumberBlackList/new' POST (followed by calls to 'edit/update' and 'edit/save')
		# TODO: API call 'NumberBlackList/delete' POST {Ids: ["(number)"]}
		# TODO: API call 'PhoneList'
		# TODO: API call 'QueueList'
		# TODO: API call 'RecordingList'
		# TODO: API call 'RingGroupList'
		# TODO: API call 'SystemPromptList'
		# TODO: API call 'SystemPromptList/promptSets'
		# TODO: API call 'SystemPromptList/promptSetUpdates'
		# TODO: API call 'UpdateChecker/GetFromParams'
		# TODO: API call 'updateChecker/check' POST
		# TODO: API call 'updateChecker/isDebian8'
		# TODO: API call 'crm/serverCrmUpdates'
		# TODO: API call 'crm/clientCrmUpdates'
		# TODO: API call 'CrmList/CrmSettings' POST


	def __init__(self, uri=None, account=None):
		from os import getenv
		if uri==None:
			uri=getenv('TCX_URI', None)
		if account==None:
			account={
				"username": getenv('TCX_USERNAME', None),
				"password": getenv('TCX_PASSWORD', None)
			}
			assert (len(account['username']>1)), "py3cx was initialised without account information, and TCX_USERNAME does not contain a valid username."
			assert (len(account['password']>5)), "py3cx was initialised without account information, and TCX_PASSWORD does not contain a valid password."
		#Validation for initialisation parameters
		assert (len(uri)>0), "uri must be a full URI to your target 3CX server"
		assert (uri.startswith('http')), "uri must be a valid HTTP or HTTPS URI"
		assert ('username' in account), "account object must contain username property"
		assert ('password' in account), "account object must contain password property"
		assert (len(account['username'])>1), "account object must contain a valid username"
		assert (len(account['password'])>5), "account object must contain a valid password"
		self._base=uri
		self._account=account