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fixed approve methods

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This commit is contained in:
Bogdan Fazakas 2022-09-07 16:37:57 +03:00
parent 197a75a2f9
commit 63a17caa84
1 changed files with 9 additions and 4 deletions
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13
src/utils/TokenUtils.ts
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@ -14,12 +14,15 @@ import { ReceiptOrEstimate } from '../@types'
/**
* Approve spender to spent amount tokens
* @param {Web3} web3
* @param {Config} config
* @param {String} account
* @param {String} tokenAddress
* @param {String} spender
* @param {String} amount amount of ERC20 Datatokens (always expressed as wei)
* @param {boolean} force if true, will overwrite any previous allowence. Else, will check if allowence is enough and will not send a transaction if it's not needed
* @param {number} tokenDecimals optional number of decimals of the token
* @param {boolean} estimateGas if true, returns the estimate gas cost for calling the method
*/
export async function approve<G extends boolean = false>(
web3: Web3,
@ -36,7 +39,7 @@ export async function approve<G extends boolean = false>(
if (!force) {
const currentAllowence = await allowance(web3, tokenAddress, account, spender)
if (new Decimal(currentAllowence).greaterThanOrEqualTo(new Decimal(amount))) {
return null
return <ReceiptOrEstimate<G>>new Decimal(currentAllowence).toNumber()
}
}
const amountFormatted = await amountToUnits(web3, tokenAddress, amount, tokenDecimals)
@ -62,11 +65,14 @@ export async function approve<G extends boolean = false>(
/**
* Approve spender to spent amount tokens
* @param {Web3} web3
* @param {Config} config
* @param {String} account
* @param {String} tokenAddress
* @param {String} spender
* @param {String} amount amount of ERC20 tokens (always expressed as wei)
* @param {boolean} force if true, will overwrite any previous allowence. Else, will check if allowence is enough and will not send a transaction if it's not needed
* @param {boolean} estimateGas if true, returns the estimate gas cost for calling the method
*/
export async function approveWei<G extends boolean = false>(
web3: Web3,
@ -82,7 +88,7 @@ export async function approveWei<G extends boolean = false>(
if (!force) {
const currentAllowence = await allowanceWei(web3, tokenAddress, account, spender)
if (new BigNumber(currentAllowence).gt(new BigNumber(amount))) {
return null
return <ReceiptOrEstimate<G>>new Decimal(currentAllowence).toNumber()
}
}
let result = null
@ -205,8 +211,7 @@ export async function allowanceWei(
web3: Web3,
tokenAddress: string,
account: string,
spender: string,
tokenDecimals?: number
spender: string
): Promise<string> {
const tokenContract = new web3.eth.Contract(minAbi, tokenAddress)
return await tokenContract.methods.allowance(account, spender).call()