Stage 05.2 - interactive draft builder

app/src/integrations/exchange/service.py

@@ -114,6 +114,53 @@ class ExchangeService:
 
         return self._get_real_price(validation.normalized_symbol)
 
+    def get_market_snapshot(self, symbol: str | None = None) -> dict[str, object]:
+        symbol_to_use = symbol or self.settings.default_symbol
+
+        if not self.settings.exchange_enabled:
+            ticker = mock_ticker_price(symbol_to_use)
+            return {
+                "symbol": ticker.symbol,
+                "last_price": ticker.price,
+                "bid_price": ticker.price,
+                "ask_price": ticker.price,
+                "updated_at": ticker.updated_at,
+            }
+
+        validation = self.validate_symbol(symbol_to_use)
+        if not validation.is_valid:
+            raise ExchangeError(validation.message)
+
+        client = ExchangeRestClient()
+        payload = client.get_json(
+            "/api/v2/ticker/24hr",
+            params={"symbol": validation.normalized_symbol},
+        )
+
+        last_raw = payload.get("lastPrice")
+        if last_raw is None:
+            raise ExchangeError("Field 'lastPrice' is missing in ticker response.")
+
+        bid_raw = payload.get("bidPrice") or last_raw
+        ask_raw = payload.get("askPrice") or last_raw
+
+        close_time = payload.get("closeTime") or payload.get("eventTime") or ""
+
+        if close_time:
+            dt_utc = datetime.fromtimestamp(int(close_time) / 1000, tz=ZoneInfo("UTC"))
+            dt_local = dt_utc.astimezone(ZoneInfo(self.settings.tz))
+            updated_at = dt_local.strftime("%d.%m.%Y %H:%M:%S")
+        else:
+            updated_at = "n/a"
+
+        return {
+            "symbol": validation.normalized_symbol,
+            "last_price": float(last_raw),
+            "bid_price": float(bid_raw),
+            "ask_price": float(ask_raw),
+            "updated_at": updated_at,
+        }
+
     def get_balance_summary(self) -> list[BalanceSummary]:
         if not self.settings.exchange_enabled:
             return mock_balance_summary()