You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
2.0 KiB
50 lines
2.0 KiB
import { useSelector } from 'react-redux'
|
|
import { getSelectedAccount } from '../selectors'
|
|
import { ETH_SWAPS_TOKEN_OBJECT } from '../helpers/constants/swaps'
|
|
import { getValueFromWeiHex, hexToDecimal } from '../helpers/utils/conversions.util'
|
|
|
|
/**
|
|
* @typedef {Object} SwapsEthToken
|
|
* @property {string} symbol - The symbol for ETH, namely "ETH"
|
|
* @property {string} name - The name of the ETH currency, "Ether"
|
|
* @property {string} address - A substitute address for the metaswap-api to
|
|
* recognize the ETH token
|
|
* @property {string} decimals - The number of ETH decimals, i.e. 18
|
|
* @property {string} balance - The user's ETH balance in decimal wei, with a
|
|
* precision of 4 decimal places
|
|
* @property {string} string - The user's ETH balance in decimal ETH
|
|
*/
|
|
|
|
/**
|
|
* Swaps related code uses token objects for various purposes. These objects
|
|
* always have the following properties: `symbol`, `name`, `address`, and
|
|
* `decimals`.
|
|
*
|
|
* When available for the current account, the objects can have `balance` and
|
|
* `string` properties.
|
|
* `balance` is the users token balance in decimal values, denominated in the
|
|
* minimal token units (according to its decimals).
|
|
* `string` is the token balance in a readable format, ready for rendering.
|
|
*
|
|
* Swaps treats ETH as a token, and we use the ETH_SWAPS_TOKEN_OBJECT constant
|
|
* to set the standard properties for the token. The useSwapsEthToken hook
|
|
* extends that object with `balance` and `balance` values of the same type as
|
|
* in regular ERC-20 token objects, per the above description.
|
|
*
|
|
* @returns {SwapsEthToken} The token object representation of the currently
|
|
* selected account's ETH balance, as expected by the Swaps API.
|
|
*/
|
|
export function useSwapsEthToken () {
|
|
const selectedAccount = useSelector(getSelectedAccount)
|
|
const { balance } = selectedAccount
|
|
|
|
return {
|
|
...ETH_SWAPS_TOKEN_OBJECT,
|
|
balance: hexToDecimal(balance),
|
|
string: getValueFromWeiHex({
|
|
value: balance,
|
|
numberOfDecimals: 4,
|
|
toDenomination: 'ETH',
|
|
}),
|
|
}
|
|
}
|
|
|