mirror of
https://github.com/spiral-project/ihatemoney.git
synced 2025-04-29 01:42:37 +02:00
1a2fa0476b
* hotfix: hardcode list of currencies to workaround failing API calls See https://github.com/spiral-project/ihatemoney/issues/1232 for a discussion on currencies * Temporarily disable some currency operations to prevent crashes Here is what is disabled: - setting or changing the default currency on an existing project - adding or editing a bill with a currency that differs from the default currency of the project --------- Co-authored-by: Baptiste Jonglez <git@bitsofnetworks.org>
228 lines
4.8 KiB
Python
228 lines
4.8 KiB
Python
import traceback
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import warnings
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from cachetools import TTLCache, cached
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import requests
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class Singleton(type):
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_instances = {}
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def __call__(cls, *args, **kwargs):
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if cls not in cls._instances:
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cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
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return cls._instances[cls]
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class CurrencyConverter(object, metaclass=Singleton):
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# Get exchange rates
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no_currency = "XXX"
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api_url = "https://api.exchangerate.host/latest?base=USD"
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def __init__(self):
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pass
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@cached(cache=TTLCache(maxsize=1, ttl=86400))
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def get_rates(self):
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try:
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rates = requests.get(self.api_url).json()["rates"]
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except Exception:
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warnings.warn(
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f"Call to {self.api_url} failed: {traceback.format_exc(limit=0).strip()}"
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)
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# In case of any exception, let's have an empty value
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rates = {}
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rates[self.no_currency] = 1.0
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return rates
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def get_currencies(self, with_no_currency=True):
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currencies = [
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"AED",
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"AFN",
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"ALL",
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"AMD",
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"ANG",
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"AOA",
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"ARS",
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"AUD",
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"AWG",
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"AZN",
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"BAM",
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"BBD",
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"BDT",
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"BGN",
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"BHD",
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"BIF",
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"BMD",
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"BND",
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"BOB",
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"BRL",
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"BSD",
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"BTC",
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"BTN",
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"BWP",
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"BYN",
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"BZD",
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"CAD",
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"CDF",
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"CHF",
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"CLF",
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"CLP",
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"CNH",
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"CNY",
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"COP",
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"CRC",
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"CUC",
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"CUP",
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"CVE",
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"CZK",
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"DJF",
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"DKK",
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"DOP",
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"DZD",
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"EGP",
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"ERN",
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"ETB",
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"EUR",
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"FJD",
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"FKP",
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"GBP",
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"GEL",
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"GGP",
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"GHS",
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"GIP",
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"GMD",
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"GNF",
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"GTQ",
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"GYD",
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"HKD",
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"HNL",
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"HRK",
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"HTG",
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"HUF",
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"IDR",
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"ILS",
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"IMP",
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"INR",
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"IQD",
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"IRR",
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"ISK",
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"JEP",
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"JMD",
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"JOD",
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"JPY",
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"KES",
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"KGS",
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"KHR",
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"KMF",
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"KPW",
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"KRW",
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"KWD",
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"KYD",
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"KZT",
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"LAK",
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"LBP",
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"LKR",
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"LRD",
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"LSL",
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"LYD",
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"MAD",
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"MDL",
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"MGA",
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"MKD",
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"MMK",
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"MNT",
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"MOP",
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"MRU",
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"MUR",
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"MVR",
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"MWK",
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"MXN",
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"MYR",
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"MZN",
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"NAD",
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"NGN",
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"NIO",
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"NOK",
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"NPR",
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"NZD",
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"OMR",
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"PAB",
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"PEN",
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"PGK",
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"PHP",
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"PKR",
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"PLN",
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"PYG",
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"QAR",
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"RON",
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"RSD",
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"RUB",
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"RWF",
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"SAR",
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"SBD",
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"SCR",
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"SDG",
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"SEK",
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"SGD",
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"SHP",
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"SLL",
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"SOS",
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"SRD",
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"SSP",
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"STD",
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"STN",
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"SVC",
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"SYP",
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"SZL",
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"THB",
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"TJS",
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"TMT",
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"TND",
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"TOP",
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"TRY",
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"TTD",
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"TWD",
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"TZS",
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"UAH",
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"UGX",
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"USD",
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"UYU",
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"UZS",
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"VEF",
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"VES",
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"VND",
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"VUV",
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"WST",
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"XAF",
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"XAG",
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"XAU",
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"XCD",
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"XDR",
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"XOF",
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"XPD",
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"XPF",
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"XPT",
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"YER",
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"ZAR",
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"ZMW",
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"ZWL",
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]
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if with_no_currency:
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currencies.append(self.no_currency)
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return currencies
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def exchange_currency(self, amount, source_currency, dest_currency):
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if (
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source_currency == dest_currency
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or source_currency == self.no_currency
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or dest_currency == self.no_currency
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):
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return amount
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rates = self.get_rates()
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source_rate = rates[source_currency]
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dest_rate = rates[dest_currency]
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new_amount = (float(amount) / source_rate) * dest_rate
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# round to two digits because we are dealing with money
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return round(new_amount, 2)
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