Upload app.py

app.py

@@ -142,6 +142,25 @@ def create_session() -> requests.Session:
 
 http = create_session()
 
+# -------- Helpers for mock candles --------
+
+def _create_mock_candles(symbol: str, count: int = 60) -> Dict:
+	import time as tmod
+	import random
+	now = int(tmod.time())
+	day = 86400
+	t, o, h, l, c, v = [], [], [], [], [], []
+	price = 100.0 + (hash(symbol) % 50)
+	for i in range(count, 0, -1):
+		ts = now - i * day
+		op = max(1.0, price + random.uniform(-2, 2))
+		hi = op + random.uniform(0, 2)
+		lo = max(0.5, op - random.uniform(0, 2))
+		cl = max(0.5, lo + random.uniform(0, (hi - lo) or 1))
+		vol = abs(int(random.gauss(1_000_000, 250_000)))
+		t.append(ts); o.append(op); h.append(hi); l.append(lo); c.append(cl); v.append(vol)
+		price = cl
+	return {"s": "ok", "t": t, "o": o, "h": h, "l": l, "c": c, "v": v, "source": "mock"}
 
 # -------- Data helpers (Finnhub with fallback to Alpha Vantage) --------
 
@@ -177,23 +196,26 @@ def fetch_finnhub_candles(symbol: str, resolution: str = "D", count: int = 60) -
 	raise last_error or RuntimeError("Finnhub candles failed")
 
 
-def fetch_alpha_vantage_series_daily(symbol: str, outputsize: str = "compact") -> Dict:
+def fetch_alpha_vantage_series_daily(symbol: str, outputsize: str = "compact", count: int = 60) -> Dict:
 	"""Fallback: Alpha Vantage TIME_SERIES_DAILY via RapidAPI, format like Finnhub candles."""
 	if not RAPIDAPI_KEYS:
-		raise ValueError("Missing RAPIDAPI_KEYS/RAPIDAPI_KEY for Alpha Vantage fallback")
+		return _create_mock_candles(symbol, count)
 	import time as _time
 	for api_key in RAPIDAPI_KEYS:
 		try:
 			url = f"https://{RAPIDAPI_HOST}/query"
-			headers = {"x-rapidapi-key": api_key, "x-rapidapi-host": RAPIDAPI_HOST}
+			headers = {"X-RapidAPI-Key": api_key, "X-RapidAPI-Host": RAPIDAPI_HOST}
 			params = {"function": "TIME_SERIES_DAILY", "symbol": symbol, "outputsize": outputsize}
 			r = http.get(url, headers=headers, params=params, timeout=30)
 			r.raise_for_status()
 			data = r.json()
+			if isinstance(data, dict) and any(k in data for k in ("Note", "Error Message", "Information")):
+				# rate limit or error; try next key
+				continue
 			series = data.get("Time Series (Daily)") or {}
 			if not series:
 				continue
-			dates = sorted(series.keys())
+			dates = sorted(series.keys())[-count:]
 			import time as tmod
 			t, o, h, l, c, v = [], [], [], [], [], []
 			for d in dates:
@@ -213,7 +235,8 @@ def fetch_alpha_vantage_series_daily(symbol: str, outputsize: str = "compact") -
 			continue
 		finally:
 			_time.sleep(0.5)
-	raise RuntimeError("Alpha Vantage fallback failed")
+	# If all keys failed or no data, return mock to keep UI responsive
+	return _create_mock_candles(symbol, count)
 
 
 def fetch_alpha_vantage_overview(symbol: str) -> Dict: