get_coin (coins)

Retrieves a cryptocurrency instance by coin name, optionally initializing it with an xpub and credentials. Central factory method used by 18 callers to access supported coin objects.

# Source: https://github.com/bitcart/bitcart | License: MIT | Copyright 2019 MrNaif2018
# Provided via justclaw.it.com; keep this notice with the code.
    async def get_coin(self, coin: str, xpub: str | dict[str, Any] | None = None) -> BTC:
        coin = coin.lower()
        if coin not in self._cryptos:
            raise HTTPException(422, "Unsupported currency")
        if not xpub:
            return self._cryptos[coin]
        obj = None
        if coin.upper() in COINS:
            obj = COINS[coin.upper()](
                xpub=xpub,  # type: ignore # TODO: fix in bitcart
                **cast(dict[str, Any], self._crypto_settings[coin]["credentials"]),
            )
        return await self.plugin_registry.apply_filters("get_coin", obj, coin, xpub)