mirror of
https://github.com/lnbits/lnbits-legend.git
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82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
import json
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import os
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import httpx
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fiat_currencies = json.load(
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open(
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os.path.join(
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os.path.dirname(os.path.realpath(__file__)), "fiat_currencies.json"
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),
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"r",
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)
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)
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exchange_rate_providers = {
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"bitfinex": {
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"name": "Bitfinex",
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"domain": "bitfinex.com",
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"api_url": "https://api.bitfinex.com/v1/pubticker/{from}{to}",
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"getter": lambda data, replacements: data["last_price"],
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},
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"bitstamp": {
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"name": "Bitstamp",
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"domain": "bitstamp.net",
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"api_url": "https://www.bitstamp.net/api/v2/ticker/{from}{to}/",
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"getter": lambda data, replacements: data["last"],
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},
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"coinbase": {
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"name": "Coinbase",
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"domain": "coinbase.com",
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"api_url": "https://api.coinbase.com/v2/exchange-rates?currency={FROM}",
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"getter": lambda data, replacements: data["data"]["rates"][replacements["TO"]],
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},
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"coinmate": {
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"name": "CoinMate",
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"domain": "coinmate.io",
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"api_url": "https://coinmate.io/api/ticker?currencyPair={FROM}_{TO}",
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"getter": lambda data, replacements: data["data"]["last"],
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},
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"kraken": {
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"name": "Kraken",
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"domain": "kraken.com",
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"api_url": "https://api.kraken.com/0/public/Ticker?pair=XBT{TO}",
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"getter": lambda data, replacements: data["result"][
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"XXBTZ" + replacements["TO"]
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]["c"][0],
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},
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}
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exchange_rate_providers_serializable = {}
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for ref, exchange_rate_provider in exchange_rate_providers.items():
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exchange_rate_provider_serializable = {}
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for key, value in exchange_rate_provider.items():
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if not callable(value):
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exchange_rate_provider_serializable[key] = value
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exchange_rate_providers_serializable[ref] = exchange_rate_provider_serializable
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async def fetch_fiat_exchange_rate(currency: str, provider: str):
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replacements = {
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"FROM": "BTC",
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"from": "btc",
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"TO": currency.upper(),
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"to": currency.lower(),
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}
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url = exchange_rate_providers[provider]["api_url"]
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if url:
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for key in replacements.keys():
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url = url.replace("{" + key + "}", replacements[key])
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async with httpx.AsyncClient() as client:
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r = await client.get(url)
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r.raise_for_status()
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data = r.json()
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else:
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data = {}
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getter = exchange_rate_providers[provider]["getter"]
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rate = float(getter(data, replacements))
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return rate
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