def convey(x, fs):
	y = x
	for f in fs:
		y = f(y)
	return y
	

def string_coin(
	template : str,
	arguments : dict
):
	result = template
	for (key, value, ) in arguments.items():
		result = result.replace("{{%s}}" % key, value)
	return result
	
	
def file_read(
	path : str
):
	handle = open(path, "r")
	content = handle.read()
	handle.close()
	return content
	

def log(
	messsage : str
):
	_sys.stderr.write("-- %s\n" % messsage)
	

def path_read(
	thing,
	steps : List[str]
):
	position = thing
	for step in steps:
		if (not (step in position)):
			raise ValueError("missing key '%s'" % ".".join(steps))
		position = position[step]
	return position
	

def http_call(
	request : dict,
) -> dict:
	connection = (
		{
			"http": (lambda: _http_client.HTTPConnection(request["url"]["host"], request["url"]["port"])),
			"https": (lambda:  _http_client.HTTPSConnection(request["url"]["host"], request["url"]["port"])),
		}[request["url"]["scheme"]]
	)()
	connection.request(
		request["method"],
		("/" + request["url"]["path"]),
		request["data"],
		request["headers"]
	)
	response_ = connection.getresponse()
	response = {
		"status": response_.status,
		"headers": dict(response_.getheaders()),
		"data": response_.read(),
	}
	return response