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feat: permit2 and universal-router integration (Uniswap#321)
* build: bump to valid version of universal-router-sdk * fix: check for zero * refactor: look up pending approval by spender * fix: style nits * feat: add tooltip to ActionButton * fix: disable confirm button while pending * fix: improve onSubmit typing * fix: avoid setting controller when uncontrolled * feat: add token allowance callback * feat: permit2 logic * feat: universal-router logic * feat: integrate permit2 * chore: initial PR review * fix: do not err on unsupported chain * refactor: try-catch each swap action * refactor: use async-await for ur call
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| import { t, Trans } from '@lingui/macro' | ||
| import { PERMIT2_ADDRESS } from '@uniswap/permit2-sdk' | ||
| import ActionButton from 'components/ActionButton' | ||
| import EtherscanLink from 'components/EtherscanLink' | ||
| import { usePendingApproval } from 'hooks/transactions' | ||
| import { PermitState } from 'hooks/usePermit2' | ||
| import { Spinner } from 'icons' | ||
| import { useCallback, useEffect, useMemo, useState } from 'react' | ||
| import { InterfaceTrade } from 'state/routing/types' | ||
| import { ApprovalTransactionInfo } from 'state/transactions' | ||
| import { Colors } from 'theme' | ||
| import { ExplorerDataType } from 'utils/getExplorerLink' | ||
|
|
||
| /** | ||
| * An approving PermitButton. | ||
| * Should only be rendered if a valid trade exists that is not yet permitted. | ||
| */ | ||
| export default function PermitButton({ | ||
| color, | ||
| trade, | ||
| state, | ||
| callback, | ||
| onSubmit, | ||
| }: { | ||
| color: keyof Colors | ||
| trade?: InterfaceTrade | ||
| state: PermitState | ||
| callback?: () => Promise<ApprovalTransactionInfo | void> | ||
| onSubmit: (submit?: () => Promise<ApprovalTransactionInfo | void>) => Promise<void> | ||
| }) { | ||
| const currency = trade?.inputAmount?.currency | ||
| const [isPending, setIsPending] = useState(false) | ||
| const [isFailed, setIsFailed] = useState(false) | ||
| useEffect(() => { | ||
| // Reset pending/failed state if currency changes. | ||
| setIsPending(false) | ||
| setIsFailed(false) | ||
| }, [currency]) | ||
|
|
||
| const onClick = useCallback(async () => { | ||
| setIsPending(true) | ||
| try { | ||
| await onSubmit(callback) | ||
| setIsFailed(false) | ||
| } catch (e) { | ||
| console.error(e) | ||
| setIsFailed(true) | ||
| } finally { | ||
| setIsPending(false) | ||
| } | ||
| }, [callback, onSubmit]) | ||
|
|
||
| const pendingApproval = usePendingApproval(currency?.isToken ? currency : undefined, PERMIT2_ADDRESS) | ||
|
|
||
| const actionProps = useMemo(() => { | ||
| switch (state) { | ||
| case PermitState.UNKNOWN: | ||
| case PermitState.PERMITTED: | ||
| return | ||
| case PermitState.APPROVAL_NEEDED: | ||
| case PermitState.PERMIT_NEEDED: | ||
| } | ||
|
|
||
| if (isPending) { | ||
| return { | ||
| icon: Spinner, | ||
| message: t`Approve in your wallet`, | ||
| } | ||
| } else if (pendingApproval) { | ||
| return { | ||
| icon: Spinner, | ||
| message: ( | ||
| <EtherscanLink type={ExplorerDataType.TRANSACTION} data={pendingApproval}> | ||
| <Trans>Approval pending</Trans> | ||
| </EtherscanLink> | ||
| ), | ||
| } | ||
| } else if (isFailed) { | ||
| return { | ||
| message: t`Approval failed`, | ||
| onClick, | ||
| } | ||
| } else { | ||
| return { | ||
| tooltip: t`Permission is required for Uniswap to swap each token. This will expire after one month for your security.`, | ||
| message: `Approve use of ${currency?.symbol ?? 'token'}`, | ||
| onClick, | ||
| } | ||
| } | ||
| }, [currency?.symbol, isFailed, isPending, onClick, pendingApproval, state]) | ||
|
|
||
| return ( | ||
| <ActionButton color={color} disabled={!actionProps?.onClick} action={actionProps}> | ||
| {isFailed ? t`Try again` : t`Approve`} | ||
| </ActionButton> | ||
| ) | ||
| } |
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