generated from nathanwoodburn/python-webserver-template
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
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from pycoingecko import CoinGeckoAPI
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import json
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import os
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import dotenv
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dotenv.load_dotenv()
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fiat = os.getenv("fiat")
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usd_to_fiat = float(os.getenv("usd_to_fiat"))
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stablecoins = ["usdc", "usdt", "dai"]
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# Get api key
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if os.path.exists("api_keys/coingecko.txt"):
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with open("api_keys/coingecko.txt", "r") as f:
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apiKey = f.read()
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else:
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apiKey = None
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def get_historical_fiat_price(coin_id, date):
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"""
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Fetches the historical price of a cryptocurrency in fiat on a specific date.
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Args:
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coin_id (str): The CoinGecko ID of the cryptocurrency (e.g., 'bitcoin', 'ethereum').
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date (str): The date in YYYY-MM-DD format.
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Returns:
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float: The historical price of the cryptocurrency in specified fiat currency.
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"""
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if coin_id in stablecoins:
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return 1 * usd_to_fiat
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historical_prices = {}
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if os.path.exists(f"chain_data/{coin_id}_price.json"):
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with open(f"chain_data/{coin_id}_price.json", "r") as f:
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historical_prices = json.load(f)
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if date in historical_prices:
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return historical_prices[date]
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cg = CoinGeckoAPI()
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historical_data = cg.get_coin_history_by_id(id=coin_id, date=date, localization='false', demo_api_key=apiKey)
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price_data = historical_data['market_data']['current_price']
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fiat_price = price_data[fiat]
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historical_prices[date] = fiat_price
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with open(f"chain_data/{coin_id}_price.json", "w") as f:
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json.dump(historical_prices, f)
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return fiat_price
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