include ?before from price api to replace ?from and ?to

src/price.py

@@ -39,7 +39,7 @@ def get_using_pair() -> str:
 			return pair
 	return default_pair
 
-def get_prices(interval: int, pair: str):
+def get_prices(interval: int, pair: str, before: int = None):
 	if not interval or not pair:
 		raise Exception('No Interval/Pair')
 
@@ -49,7 +49,11 @@ def get_prices(interval: int, pair: str):
 	if not is_supported_pair(pair):
 		raise Exception(f'Unsupported Pair: {pair}')
 
-	price_api_response = get(f'{price_collector_uri}/prices/{pair.lower()}?interval={interval}')
+	if type(before) != 'int' and before:
+		raise Exception(f'Unsupported before')
+
+	price_api_response = get(
+	  f'{price_collector_uri}/prices/{pair}?interval={interval}{f"&before={before}" if before else ""}')
 	data = price_api_response.json()
 
 	prices, timestamps = zip(*(item.values() for item in data))

src/views/plot.py

@@ -16,12 +16,13 @@ def plot(algorithm_name: str):
 	interval = get_using_interval()
 	pair = get_using_pair()
 	interactive = request.args.get('interactive', type=bool, default=False)
+	before = request.args.get('before', type=int, default=None)
 
 	if algorithm_name not in ['price', *get_algorithms()]:
 		return 'Unsupported Algorithm', 404
 
 	try:
-		prices, timestamps = get_prices(interval, pair)
+		prices, timestamps = get_prices(interval, pair, before)
 		timestamps = timestamps.astype('datetime64[s]')
 	except Exception as error:
 		return str(error)