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lnbits-legend/lnbits/utils/exchange_rates.py
Vlad Stan 32c042741d
fix: backwards compatible (#2853)
2024-12-19 09:50:52 +02:00

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Python
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from typing import Optional
import httpx
import jsonpath_ng.ext as jpx
from loguru import logger
from lnbits.settings import ExchangeRateProvider, settings
from lnbits.utils.cache import cache
currencies = {
"AED": "United Arab Emirates Dirham",
"AFN": "Afghan Afghani",
"ALL": "Albanian Lek",
"AMD": "Armenian Dram",
"ANG": "Netherlands Antillean Gulden",
"AOA": "Angolan Kwanza",
"ARS": "Argentine Peso",
"AUD": "Australian Dollar",
"AWG": "Aruban Florin",
"AZN": "Azerbaijani Manat",
"BAM": "Bosnia and Herzegovina Convertible Mark",
"BBD": "Barbadian Dollar",
"BDT": "Bangladeshi Taka",
"BGN": "Bulgarian Lev",
"BHD": "Bahraini Dinar",
"BIF": "Burundian Franc",
"BMD": "Bermudian Dollar",
"BND": "Brunei Dollar",
"BOB": "Bolivian Boliviano",
"BRL": "Brazilian Real",
"BSD": "Bahamian Dollar",
"BTN": "Bhutanese Ngultrum",
"BWP": "Botswana Pula",
"BYN": "Belarusian Ruble",
"BYR": "Belarusian Ruble",
"BZD": "Belize Dollar",
"CAD": "Canadian Dollar",
"CDF": "Congolese Franc",
"CHF": "Swiss Franc",
"CLF": "Unidad de Fomento",
"CLP": "Chilean Peso",
"CNH": "Chinese Renminbi Yuan Offshore",
"CNY": "Chinese Renminbi Yuan",
"COP": "Colombian Peso",
"CRC": "Costa Rican Colón",
"CUC": "Cuban Convertible Peso",
"CVE": "Cape Verdean Escudo",
"CZK": "Czech Koruna",
"DJF": "Djiboutian Franc",
"DKK": "Danish Krone",
"DOP": "Dominican Peso",
"DZD": "Algerian Dinar",
"EGP": "Egyptian Pound",
"ERN": "Eritrean Nakfa",
"ETB": "Ethiopian Birr",
"EUR": "Euro",
"FJD": "Fijian Dollar",
"FKP": "Falkland Pound",
"GBP": "British Pound",
"GEL": "Georgian Lari",
"GGP": "Guernsey Pound",
"GHS": "Ghanaian Cedi",
"GIP": "Gibraltar Pound",
"GMD": "Gambian Dalasi",
"GNF": "Guinean Franc",
"GTQ": "Guatemalan Quetzal",
"GYD": "Guyanese Dollar",
"HKD": "Hong Kong Dollar",
"HNL": "Honduran Lempira",
"HRK": "Croatian Kuna",
"HTG": "Haitian Gourde",
"HUF": "Hungarian Forint",
"IDR": "Indonesian Rupiah",
"ILS": "Israeli New Sheqel",
"IMP": "Isle of Man Pound",
"INR": "Indian Rupee",
"IQD": "Iraqi Dinar",
"IRT": "Iranian Toman",
"ISK": "Icelandic Króna",
"JEP": "Jersey Pound",
"JMD": "Jamaican Dollar",
"JOD": "Jordanian Dinar",
"JPY": "Japanese Yen",
"KES": "Kenyan Shilling",
"KGS": "Kyrgyzstani Som",
"KHR": "Cambodian Riel",
"KMF": "Comorian Franc",
"KRW": "South Korean Won",
"KWD": "Kuwaiti Dinar",
"KYD": "Cayman Islands Dollar",
"KZT": "Kazakhstani Tenge",
"LAK": "Lao Kip",
"LBP": "Lebanese Pound",
"LKR": "Sri Lankan Rupee",
"LRD": "Liberian Dollar",
"LSL": "Lesotho Loti",
"LYD": "Libyan Dinar",
"MAD": "Moroccan Dirham",
"MDL": "Moldovan Leu",
"MGA": "Malagasy Ariary",
"MKD": "Macedonian Denar",
"MMK": "Myanmar Kyat",
"MNT": "Mongolian Tögrög",
"MOP": "Macanese Pataca",
"MRO": "Mauritanian Ouguiya",
"MUR": "Mauritian Rupee",
"MVR": "Maldivian Rufiyaa",
"MWK": "Malawian Kwacha",
"MXN": "Mexican Peso",
"MYR": "Malaysian Ringgit",
"MZN": "Mozambican Metical",
"NAD": "Namibian Dollar",
"NGN": "Nigerian Naira",
"NIO": "Nicaraguan Córdoba",
"NOK": "Norwegian Krone",
"NPR": "Nepalese Rupee",
"NZD": "New Zealand Dollar",
"OMR": "Omani Rial",
"PAB": "Panamanian Balboa",
"PEN": "Peruvian Sol",
"PGK": "Papua New Guinean Kina",
"PHP": "Philippine Peso",
"PKR": "Pakistani Rupee",
"PLN": "Polish Złoty",
"PYG": "Paraguayan Guaraní",
"QAR": "Qatari Riyal",
"RON": "Romanian Leu",
"RSD": "Serbian Dinar",
"RUB": "Russian Ruble",
"RWF": "Rwandan Franc",
"SAR": "Saudi Riyal",
"SBD": "Solomon Islands Dollar",
"SCR": "Seychellois Rupee",
"SEK": "Swedish Krona",
"SGD": "Singapore Dollar",
"SHP": "Saint Helenian Pound",
"SLL": "Sierra Leonean Leone",
"SOS": "Somali Shilling",
"SRD": "Surinamese Dollar",
"SSP": "South Sudanese Pound",
"STD": "São Tomé and Príncipe Dobra",
"SVC": "Salvadoran Colón",
"SZL": "Swazi Lilangeni",
"THB": "Thai Baht",
"TJS": "Tajikistani Somoni",
"TMT": "Turkmenistani Manat",
"TND": "Tunisian Dinar",
"TOP": "Tongan Pa'anga",
"TRY": "Turkish Lira",
"TTD": "Trinidad and Tobago Dollar",
"TWD": "New Taiwan Dollar",
"TZS": "Tanzanian Shilling",
"UAH": "Ukrainian Hryvnia",
"UGX": "Ugandan Shilling",
"USD": "US Dollar",
"UYU": "Uruguayan Peso",
"UZS": "Uzbekistan Som",
"VEF": "Venezuelan Bolívar",
"VES": "Venezuelan Bolívar Soberano",
"VND": "Vietnamese Đồng",
"VUV": "Vanuatu Vatu",
"WST": "Samoan Tala",
"XAF": "Central African Cfa Franc",
"XAG": "Silver (Troy Ounce)",
"XAU": "Gold (Troy Ounce)",
"XCD": "East Caribbean Dollar",
"XDR": "Special Drawing Rights",
"XOF": "West African Cfa Franc",
"XPD": "Palladium",
"XPF": "Cfp Franc",
"XPT": "Platinum",
"YER": "Yemeni Rial",
"ZAR": "South African Rand",
"ZMW": "Zambian Kwacha",
"ZWL": "Zimbabwean Dollar",
}
def allowed_currencies():
if len(settings.lnbits_allowed_currencies) > 0:
return [
item
for item in currencies.keys()
if item.upper() in settings.lnbits_allowed_currencies
]
return list(currencies.keys())
async def btc_rates(currency: str) -> list[tuple[str, float]]:
def replacements(ticker: str):
return {
"FROM": "BTC",
"from": "btc",
"TO": ticker.upper(),
"to": ticker.lower(),
}
async def fetch_price(
provider: ExchangeRateProvider,
) -> Optional[tuple[str, float]]:
if currency.lower() in provider.exclude_to:
logger.warning(f"Provider {provider.name} does not support {currency}.")
return None
ticker = provider.convert_ticker(currency)
url = provider.api_url.format(**replacements(ticker))
json_path = provider.path.format(**replacements(ticker))
try:
headers = {"User-Agent": settings.user_agent}
async with httpx.AsyncClient(headers=headers) as client:
r = await client.get(url, timeout=0.5)
r.raise_for_status()
if not provider.path:
return provider.name, float(r.text.replace(",", ""))
data = r.json()
price_query = jpx.parse(json_path)
result = price_query.find(data)
return provider.name, float(result[0].value)
except Exception as e:
logger.warning(
f"Failed to fetch Bitcoin price "
f"for {currency} from {provider.name}: {e}"
)
return None
# OK to be in squence: fetch_price times out after 0.5 seconds
results = [
await fetch_price(provider)
for provider in settings.lnbits_exchange_rate_providers
]
return [r for r in results if r is not None]
async def btc_price(currency: str) -> float:
rates = await btc_rates(currency)
if not rates:
return 9999999999
elif len(rates) == 1:
logger.warning("Could only fetch one Bitcoin price.")
rates_values = [r[1] for r in rates]
return sum(rates_values) / len(rates_values)
async def get_fiat_rate_and_price_satoshis(currency: str) -> tuple[float, float]:
price = await cache.save_result(
lambda: btc_price(currency),
f"btc-price-{currency}",
settings.lnbits_exchange_rate_cache_seconds,
)
return float(100_000_000 / price), price
async def get_fiat_rate_satoshis(currency: str) -> float:
rate, _ = await get_fiat_rate_and_price_satoshis(currency)
return rate
async def fiat_amount_as_satoshis(amount: float, currency: str) -> int:
rate = await get_fiat_rate_satoshis(currency)
return int(amount * (rate))
async def satoshis_amount_as_fiat(amount: float, currency: str) -> float:
rate = await get_fiat_rate_satoshis(currency)
return float(amount / rate)
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