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#!/usr/bin/env python3
"""
CoinGecko API Client - REAL DATA ONLY
Fetches real cryptocurrency market data from CoinGecko
NO MOCK DATA - All data from live CoinGecko API
"""
import httpx
import logging
from typing import Dict, Any, List, Optional
from datetime import datetime
from fastapi import HTTPException
logger = logging.getLogger(__name__)
class CoinGeckoClient:
"""
Real CoinGecko API Client
Primary source for real-time cryptocurrency market prices
"""
def __init__(self):
self.base_url = "https://api.coingecko.com/api/v3"
self.timeout = 15.0
# Symbol to CoinGecko ID mapping
self.symbol_to_id = {
"BTC": "bitcoin",
"ETH": "ethereum",
"BNB": "binancecoin",
"XRP": "ripple",
"ADA": "cardano",
"DOGE": "dogecoin",
"SOL": "solana",
"TRX": "tron",
"DOT": "polkadot",
"MATIC": "matic-network",
"LTC": "litecoin",
"SHIB": "shiba-inu",
"AVAX": "avalanche-2",
"UNI": "uniswap",
"LINK": "chainlink",
"ATOM": "cosmos",
"XLM": "stellar",
"ETC": "ethereum-classic",
"XMR": "monero",
"BCH": "bitcoin-cash"
}
# Reverse mapping
self.id_to_symbol = {v: k for k, v in self.symbol_to_id.items()}
def _symbol_to_coingecko_id(self, symbol: str) -> str:
"""Convert crypto symbol to CoinGecko coin ID"""
symbol = symbol.upper().replace("USDT", "").replace("USD", "")
return self.symbol_to_id.get(symbol, symbol.lower())
def _coingecko_id_to_symbol(self, coin_id: str) -> str:
"""Convert CoinGecko coin ID to symbol"""
return self.id_to_symbol.get(coin_id, coin_id.upper())
async def get_market_prices(
self,
symbols: Optional[List[str]] = None,
limit: int = 100
) -> List[Dict[str, Any]]:
"""
Fetch REAL market prices from CoinGecko
Args:
symbols: List of crypto symbols (e.g., ["BTC", "ETH"])
limit: Maximum number of results
Returns:
List of real market data
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
if symbols:
# Get specific symbols using /simple/price endpoint
coin_ids = [self._symbol_to_coingecko_id(s) for s in symbols]
response = await client.get(
f"{self.base_url}/simple/price",
params={
"ids": ",".join(coin_ids),
"vs_currencies": "usd",
"include_24hr_change": "true",
"include_24hr_vol": "true",
"include_market_cap": "true"
}
)
response.raise_for_status()
data = response.json()
# Transform to standard format
prices = []
for coin_id, coin_data in data.items():
symbol = self._coingecko_id_to_symbol(coin_id)
prices.append({
"symbol": symbol,
"name": symbol, # CoinGecko simple/price doesn't include name
"price": coin_data.get("usd", 0),
"change24h": coin_data.get("usd_24h_change", 0),
"changePercent24h": coin_data.get("usd_24h_change", 0),
"volume24h": coin_data.get("usd_24h_vol", 0),
"marketCap": coin_data.get("usd_market_cap", 0),
"source": "coingecko",
"timestamp": int(datetime.utcnow().timestamp() * 1000)
})
logger.info(f"✅ CoinGecko: Fetched {len(prices)} real prices for specific symbols")
return prices
else:
# Get top coins by market cap using /coins/markets endpoint
response = await client.get(
f"{self.base_url}/coins/markets",
params={
"vs_currency": "usd",
"order": "market_cap_desc",
"per_page": min(limit, 250),
"page": 1,
"sparkline": "false",
"price_change_percentage": "24h"
}
)
response.raise_for_status()
data = response.json()
# Transform to standard format
prices = []
for coin in data:
prices.append({
"symbol": coin.get("symbol", "").upper(),
"name": coin.get("name", ""),
"price": coin.get("current_price", 0),
"change24h": coin.get("price_change_24h", 0),
"changePercent24h": coin.get("price_change_percentage_24h", 0),
"volume24h": coin.get("total_volume", 0),
"marketCap": coin.get("market_cap", 0),
"source": "coingecko",
"timestamp": int(datetime.utcnow().timestamp() * 1000)
})
logger.info(f"✅ CoinGecko: Fetched {len(prices)} real market prices")
return prices
except httpx.HTTPError as e:
logger.error(f"❌ CoinGecko API HTTP error: {e}")
raise HTTPException(
status_code=503,
detail=f"CoinGecko API temporarily unavailable: {str(e)}"
)
except Exception as e:
logger.error(f"❌ CoinGecko API failed: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch real market data from CoinGecko: {str(e)}"
)
async def get_ohlcv(self, symbol: str, days: int = 7) -> Dict[str, Any]:
"""
Fetch REAL OHLCV (price history) data from CoinGecko
Args:
symbol: Cryptocurrency symbol (e.g., "BTC", "ETH")
days: Number of days of historical data (1, 7, 14, 30, 90, 180, 365, max)
Returns:
Dict with OHLCV data
"""
try:
coin_id = self._symbol_to_coingecko_id(symbol)
async with httpx.AsyncClient(timeout=self.timeout) as client:
# Get market chart (OHLC) data
response = await client.get(
f"{self.base_url}/coins/{coin_id}/market_chart",
params={
"vs_currency": "usd",
"days": str(days),
"interval": "daily" if days > 1 else "hourly"
}
)
response.raise_for_status()
data = response.json()
logger.info(f"✅ CoinGecko: Fetched {days} days of OHLCV data for {symbol}")
return data
except httpx.HTTPError as e:
logger.error(f"❌ CoinGecko OHLCV API HTTP error: {e}")
raise HTTPException(
status_code=503,
detail=f"CoinGecko OHLCV API unavailable: {str(e)}"
)
except Exception as e:
logger.error(f"❌ CoinGecko OHLCV API failed: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch OHLCV data from CoinGecko: {str(e)}"
)
async def get_trending_coins(self, limit: int = 10) -> List[Dict[str, Any]]:
"""
Fetch REAL trending coins from CoinGecko
Returns:
List of real trending coins
"""
try:
async with httpx.AsyncClient(timeout=self.timeout) as client:
# Get trending coins
response = await client.get(f"{self.base_url}/search/trending")
response.raise_for_status()
data = response.json()
trending = []
coins = data.get("coins", [])[:limit]
# Get price data for trending coins
if coins:
coin_ids = [coin["item"]["id"] for coin in coins]
# Fetch current prices
price_response = await client.get(
f"{self.base_url}/simple/price",
params={
"ids": ",".join(coin_ids),
"vs_currencies": "usd",
"include_24hr_change": "true"
}
)
price_response.raise_for_status()
price_data = price_response.json()
for idx, coin_obj in enumerate(coins):
coin = coin_obj["item"]
coin_id = coin["id"]
prices = price_data.get(coin_id, {})
trending.append({
"symbol": coin.get("symbol", "").upper(),
"name": coin.get("name", ""),
"rank": idx + 1,
"price": prices.get("usd", 0),
"change24h": prices.get("usd_24h_change", 0),
"marketCapRank": coin.get("market_cap_rank", 0),
"source": "coingecko",
"timestamp": int(datetime.utcnow().timestamp() * 1000)
})
logger.info(f"✅ CoinGecko: Fetched {len(trending)} real trending coins")
return trending
except httpx.HTTPError as e:
logger.error(f"❌ CoinGecko trending API HTTP error: {e}")
raise HTTPException(
status_code=503,
detail=f"CoinGecko trending API unavailable: {str(e)}"
)
except Exception as e:
logger.error(f"❌ CoinGecko trending API failed: {e}")
raise HTTPException(
status_code=503,
detail=f"Failed to fetch trending coins: {str(e)}"
)
# Global instance
coingecko_client = CoinGeckoClient()
__all__ = ["CoinGeckoClient", "coingecko_client"]
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