wip misc; cleaup launch

core/coingecko_client.py

@@ -0,0 +1,74 @@
+"""
+CoinGecko client (public free endpoints) to fetch BTC/ETH prices for plotting.
+
+Rules:
+- No synthetic data. Return empty structures or None when unavailable.
+- Use shared RateLimiter for polite access and retries.
+- Default to public endpoints that do not require API key; if a key is provided via env, include it.
+"""
+
+from __future__ import annotations
+
+import logging
+import os
+from typing import Any, Dict, List, Optional, Tuple
+
+from .api_rate_limiter import get_rate_limiter
+
+
+logger = logging.getLogger(__name__)
+
+
+class CoinGeckoClient:
+    def __init__(self,
+                 api_base_url: str = "https://api.coingecko.com/api/v3",
+                 api_key_env: str = "COINGECKO_API_KEY",
+                 user_agent: str = "gogo2-dashboard/1.0") -> None:
+        self.api_base_url = api_base_url.rstrip("/")
+        self.api_key = os.environ.get(api_key_env) or ""
+        self.user_agent = user_agent
+        self._rl = get_rate_limiter()
+
+    def get_simple_price(self, ids: List[str], vs_currency: str = "usd") -> Dict[str, Any]:
+        if not ids:
+            return {}
+        url = f"{self.api_base_url}/simple/price"
+        params = {
+            "ids": ",".join(ids),
+            "vs_currencies": vs_currency,
+        }
+        headers = {"User-Agent": self.user_agent}
+        # Optional key
+        if self.api_key:
+            params["x_cg_pro_api_key"] = self.api_key
+        resp = self._rl.make_request("coingecko_api", url, method="GET", params=params, headers=headers)
+        if resp is None:
+            return {}
+        try:
+            return resp.json()  # type: ignore
+        except Exception as ex:
+            logger.error("CoinGecko simple price JSON error: %s", ex)
+            return {}
+
+    def get_market_chart(self, coin_id: str, vs_currency: str = "usd", days: int = 5, interval: str = "hourly") -> Dict[str, Any]:
+        if not coin_id:
+            return {}
+        url = f"{self.api_base_url}/coins/{coin_id}/market_chart"
+        params = {
+            "vs_currency": vs_currency,
+            "days": str(max(1, int(days))),
+            "interval": interval,
+        }
+        headers = {"User-Agent": self.user_agent}
+        if self.api_key:
+            params["x_cg_pro_api_key"] = self.api_key
+        resp = self._rl.make_request("coingecko_api", url, method="GET", params=params, headers=headers)
+        if resp is None:
+            return {}
+        try:
+            return resp.json()  # type: ignore
+        except Exception as ex:
+            logger.error("CoinGecko market_chart JSON error: %s", ex)
+            return {}
+
+