import { Trans } from '@lingui/macro'
import { sendAnalyticsEvent, Trace, TraceEvent, useTrace } from '@uniswap/analytics'
import {
  BrowserEvent,
  InterfaceElementName,
  InterfaceEventName,
  InterfacePageName,
  InterfaceSectionName,
  SharedEventName,
  SwapEventName,
} from '@uniswap/analytics-events'
import { formatCurrencyAmount, NumberType } from '@uniswap/conedison/format'
import { Currency, CurrencyAmount, Percent, Token } from '@uniswap/sdk-core'
import { UNIVERSAL_ROUTER_ADDRESS } from '@uniswap/universal-router-sdk'
import { useWeb3React } from '@web3-react/core'
import { useToggleAccountDrawer } from 'components/AccountDrawer'
import { sendEvent } from 'components/analytics'
import { NetworkAlert } from 'components/NetworkAlert/NetworkAlert'
import PriceImpactModal from 'components/swap/PriceImpactModal'
import PriceImpactWarning from 'components/swap/PriceImpactWarning'
import SwapDetailsDropdown from 'components/swap/SwapDetailsDropdown'
import TokenSafetyModal from 'components/TokenSafety/TokenSafetyModal'
import { getChainInfo } from 'constants/chainInfo'
import { isSupportedChain, SupportedChainId } from 'constants/chains'
import useENSAddress from 'hooks/useENSAddress'
import { useMaxAmountIn } from 'hooks/useMaxAmountIn'
import usePermit2Allowance, { AllowanceState } from 'hooks/usePermit2Allowance'
import usePrevious from 'hooks/usePrevious'
import { useSwapCallback } from 'hooks/useSwapCallback'
import { useSwitchChain } from 'hooks/useSwitchChain'
import { useUSDPrice } from 'hooks/useUSDPrice'
import JSBI from 'jsbi'
import { formatEventPropertiesForTrade } from 'lib/utils/analytics'
import { ReactNode, useCallback, useEffect, useMemo, useReducer, useState } from 'react'
import { ArrowDown } from 'react-feather'
import { useLocation, useNavigate } from 'react-router-dom'
import { Text } from 'rebass'
import { useAppSelector } from 'state/hooks'
import { InterfaceTrade, TradeState } from 'state/routing/types'
import styled, { useTheme } from 'styled-components/macro'
import { didUserReject } from 'utils/swapErrorToUserReadableMessage'

import AddressInputPanel from '../../components/AddressInputPanel'
import { ButtonError, ButtonLight, ButtonPrimary } from '../../components/Button'
import { GrayCard } from '../../components/Card'
import { AutoColumn } from '../../components/Column'
import SwapCurrencyInputPanel from '../../components/CurrencyInputPanel/SwapCurrencyInputPanel'
import { AutoRow } from '../../components/Row'
import confirmPriceImpactWithoutFee from '../../components/swap/confirmPriceImpactWithoutFee'
import ConfirmSwapModal from '../../components/swap/ConfirmSwapModal'
import { ArrowWrapper, PageWrapper, SwapWrapper } from '../../components/swap/styleds'
import SwapHeader from '../../components/swap/SwapHeader'
import { SwitchLocaleLink } from '../../components/SwitchLocaleLink'
import { getSwapCurrencyId, TOKEN_SHORTHANDS } from '../../constants/tokens'
import { useCurrency, useDefaultActiveTokens } from '../../hooks/Tokens'
import { useIsSwapUnsupported } from '../../hooks/useIsSwapUnsupported'
import useWrapCallback, { WrapErrorText, WrapType } from '../../hooks/useWrapCallback'
import { Field, replaceSwapState } from '../../state/swap/actions'
import { useDefaultsFromURLSearch, useDerivedSwapInfo, useSwapActionHandlers } from '../../state/swap/hooks'
import swapReducer, { initialState as initialSwapState, SwapState } from '../../state/swap/reducer'
import { LinkStyledButton, ThemedText } from '../../theme'
import { computeFiatValuePriceImpact } from '../../utils/computeFiatValuePriceImpact'
import { maxAmountSpend } from '../../utils/maxAmountSpend'
import { computeRealizedPriceImpact, warningSeverity } from '../../utils/prices'
import { supportedChainId } from '../../utils/supportedChainId'

export const ArrowContainer = styled.div`
  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 100%;
  height: 100%;
`

const SwapSection = styled.div`
  position: relative;
  background-color: ${({ theme }) => theme.backgroundModule};
  border-radius: 12px;
  padding: 16px;
  color: ${({ theme }) => theme.textSecondary};
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;

  &:before {
    box-sizing: border-box;
    background-size: 100%;
    border-radius: inherit;

    position: absolute;
    top: 0;
    left: 0;

    width: 100%;
    height: 100%;
    pointer-events: none;
    content: '';
    border: 1px solid ${({ theme }) => theme.backgroundModule};
  }

  &:hover:before {
    border-color: ${({ theme }) => theme.stateOverlayHover};
  }

  &:focus-within:before {
    border-color: ${({ theme }) => theme.stateOverlayPressed};
  }
`

const OutputSwapSection = styled(SwapSection)`
  border-bottom: ${({ theme }) => `1px solid ${theme.backgroundSurface}`};
`

function getIsValidSwapQuote(
  trade: InterfaceTrade | undefined,
  tradeState: TradeState,
  swapInputError?: ReactNode
): boolean {
  return Boolean(swapInputError && trade && tradeState === TradeState.VALID)
}

function largerPercentValue(a?: Percent, b?: Percent) {
  if (a && b) {
    return a.greaterThan(b) ? a : b
  } else if (a) {
    return a
  } else if (b) {
    return b
  }
  return undefined
}

const TRADE_STRING = 'SwapRouter'

export default function SwapPage({ className }: { className?: string }) {
  const { chainId: connectedChainId } = useWeb3React()
  const loadedUrlParams = useDefaultsFromURLSearch()

  const location = useLocation()

  return (
    <Trace page={InterfacePageName.SWAP_PAGE} shouldLogImpression>
      <PageWrapper>
        <Swap
          className={className}
          chainId={connectedChainId}
          prefilledState={{
            [Field.INPUT]: { currencyId: loadedUrlParams?.[Field.INPUT]?.currencyId },
            [Field.OUTPUT]: { currencyId: loadedUrlParams?.[Field.OUTPUT]?.currencyId },
          }}
        />
        <NetworkAlert />
      </PageWrapper>
      {location.pathname === '/swap' && <SwitchLocaleLink />}
    </Trace>
  )
}

/**
 * The swap component displays the swap interface, manages state for the swap, and triggers onchain swaps.
 *
 * In most cases, chainId should refer to the connected chain, i.e. `useWeb3React().chainId`.
 * However if this component is being used in a context that displays information from a different, unconnected
 * chain (e.g. the TDP), then chainId should refer to the unconnected chain.
 */
export function Swap({
  className,
  prefilledState = {},
  chainId,
  onCurrencyChange,
  disableTokenInputs = false,
}: {
  className?: string
  prefilledState?: Partial<SwapState>
  chainId?: SupportedChainId
  onCurrencyChange?: (selected: Pick<SwapState, Field.INPUT | Field.OUTPUT>) => void
  disableTokenInputs?: boolean
}) {
  const { account, chainId: connectedChainId, connector } = useWeb3React()
  const trace = useTrace()

  // token warning stuff
  const prefilledInputCurrency = useCurrency(prefilledState?.[Field.INPUT]?.currencyId)
  const prefilledOutputCurrency = useCurrency(prefilledState?.[Field.OUTPUT]?.currencyId)

  const [loadedInputCurrency, setLoadedInputCurrency] = useState(prefilledInputCurrency)
  const [loadedOutputCurrency, setLoadedOutputCurrency] = useState(prefilledOutputCurrency)

  useEffect(() => {
    setLoadedInputCurrency(prefilledInputCurrency)
    setLoadedOutputCurrency(prefilledOutputCurrency)
  }, [prefilledInputCurrency, prefilledOutputCurrency])

  const [dismissTokenWarning, setDismissTokenWarning] = useState<boolean>(false)
  const [showPriceImpactModal, setShowPriceImpactModal] = useState<boolean>(false)

  const urlLoadedTokens: Token[] = useMemo(
    () => [loadedInputCurrency, loadedOutputCurrency]?.filter((c): c is Token => c?.isToken ?? false) ?? [],
    [loadedInputCurrency, loadedOutputCurrency]
  )
  const handleConfirmTokenWarning = useCallback(() => {
    setDismissTokenWarning(true)
  }, [])

  // dismiss warning if all imported tokens are in active lists
  const defaultTokens = useDefaultActiveTokens(chainId)
  const importTokensNotInDefault = useMemo(
    () =>
      urlLoadedTokens &&
      urlLoadedTokens
        .filter((token: Token) => {
          return !(token.address in defaultTokens)
        })
        .filter((token: Token) => {
          // Any token addresses that are loaded from the shorthands map do not need to show the import URL
          const supported = supportedChainId(chainId)
          if (!supported) return true
          return !Object.keys(TOKEN_SHORTHANDS).some((shorthand) => {
            const shorthandTokenAddress = TOKEN_SHORTHANDS[shorthand][supported]
            return shorthandTokenAddress && shorthandTokenAddress === token.address
          })
        }),
    [chainId, defaultTokens, urlLoadedTokens]
  )

  const theme = useTheme()

  // toggle wallet when disconnected
  const toggleWalletDrawer = useToggleAccountDrawer()

  // swap state
  const [state, dispatch] = useReducer(swapReducer, { ...initialSwapState, ...prefilledState })
  const { typedValue, recipient, independentField } = state

  const previousConnectedChainId = usePrevious(connectedChainId)
  const previousPrefilledState = usePrevious(prefilledState)
  useEffect(() => {
    const combinedInitialState = { ...initialSwapState, ...prefilledState }
    const chainChanged = previousConnectedChainId && previousConnectedChainId !== connectedChainId
    const prefilledInputChanged =
      previousPrefilledState &&
      previousPrefilledState?.[Field.INPUT]?.currencyId !== prefilledState?.[Field.INPUT]?.currencyId
    const prefilledOutputChanged =
      previousPrefilledState &&
      previousPrefilledState?.[Field.OUTPUT]?.currencyId !== prefilledState?.[Field.OUTPUT]?.currencyId
    if (chainChanged || prefilledInputChanged || prefilledOutputChanged) {
      dispatch(
        replaceSwapState({
          ...initialSwapState,
          ...prefilledState,
          field: combinedInitialState.independentField ?? Field.INPUT,
          inputCurrencyId: combinedInitialState.INPUT.currencyId ?? undefined,
          outputCurrencyId: combinedInitialState.OUTPUT.currencyId ?? undefined,
        })
      )
      // reset local state
      setSwapState({
        tradeToConfirm: undefined,
        swapError: undefined,
        showConfirm: false,
        txHash: undefined,
      })
    }
  }, [connectedChainId, prefilledState, previousConnectedChainId, previousPrefilledState])

  const {
    trade: { state: tradeState, trade, method },
    allowedSlippage,
    autoSlippage,
    currencyBalances,
    parsedAmount,
    currencies,
    inputError: swapInputError,
  } = useDerivedSwapInfo(state, chainId)

  const {
    wrapType,
    execute: onWrap,
    inputError: wrapInputError,
  } = useWrapCallback(currencies[Field.INPUT], currencies[Field.OUTPUT], typedValue)
  const showWrap: boolean = wrapType !== WrapType.NOT_APPLICABLE
  const { address: recipientAddress } = useENSAddress(recipient)

  const parsedAmounts = useMemo(
    () =>
      showWrap
        ? {
            [Field.INPUT]: parsedAmount,
            [Field.OUTPUT]: parsedAmount,
          }
        : {
            [Field.INPUT]: independentField === Field.INPUT ? parsedAmount : trade?.inputAmount,
            [Field.OUTPUT]: independentField === Field.OUTPUT ? parsedAmount : trade?.outputAmount,
          },
    [independentField, parsedAmount, showWrap, trade]
  )

  const fiatValueInput = useUSDPrice(parsedAmounts[Field.INPUT])
  const fiatValueOutput = useUSDPrice(parsedAmounts[Field.OUTPUT])
  const showFiatValueInput = Boolean(parsedAmounts[Field.INPUT])
  const showFiatValueOutput = Boolean(parsedAmounts[Field.OUTPUT])

  const [routeNotFound, routeIsLoading, routeIsSyncing] = useMemo(
    () => [!trade?.swaps, TradeState.LOADING === tradeState, TradeState.LOADING === tradeState && Boolean(trade)],
    [trade, tradeState]
  )

  const fiatValueTradeInput = useUSDPrice(trade?.inputAmount)
  const fiatValueTradeOutput = useUSDPrice(trade?.outputAmount)
  const stablecoinPriceImpact = useMemo(
    () =>
      routeIsSyncing || !trade
        ? undefined
        : computeFiatValuePriceImpact(fiatValueTradeInput.data, fiatValueTradeOutput.data),
    [fiatValueTradeInput, fiatValueTradeOutput, routeIsSyncing, trade]
  )

  const { onSwitchTokens, onCurrencySelection, onUserInput, onChangeRecipient } = useSwapActionHandlers(dispatch)
  const isValid = !swapInputError
  const dependentField: Field = independentField === Field.INPUT ? Field.OUTPUT : Field.INPUT

  const handleTypeInput = useCallback(
    (value: string) => {
      onUserInput(Field.INPUT, value)
    },
    [onUserInput]
  )
  const handleTypeOutput = useCallback(
    (value: string) => {
      onUserInput(Field.OUTPUT, value)
    },
    [onUserInput]
  )

  const navigate = useNavigate()
  const swapIsUnsupported = useIsSwapUnsupported(currencies[Field.INPUT], currencies[Field.OUTPUT])

  // reset if they close warning without tokens in params
  const handleDismissTokenWarning = useCallback(() => {
    setDismissTokenWarning(true)
    navigate('/swap/')
  }, [navigate])

  // modal and loading
  const [{ showConfirm, tradeToConfirm, swapError, txHash }, setSwapState] = useState<{
    showConfirm: boolean
    tradeToConfirm?: InterfaceTrade
    swapError?: Error
    txHash?: string
  }>({
    showConfirm: false,
    tradeToConfirm: undefined,
    swapError: undefined,
    txHash: undefined,
  })

  const formattedAmounts = useMemo(
    () => ({
      [independentField]: typedValue,
      [dependentField]: showWrap
        ? parsedAmounts[independentField]?.toExact() ?? ''
        : formatCurrencyAmount(parsedAmounts[dependentField], NumberType.SwapTradeAmount, ''),
    }),
    [dependentField, independentField, parsedAmounts, showWrap, typedValue]
  )

  const userHasSpecifiedInputOutput = Boolean(
    currencies[Field.INPUT] && currencies[Field.OUTPUT] && parsedAmounts[independentField]?.greaterThan(JSBI.BigInt(0))
  )

  const maximumAmountIn = useMaxAmountIn(trade, allowedSlippage)
  const allowance = usePermit2Allowance(
    maximumAmountIn ??
      (parsedAmounts[Field.INPUT]?.currency.isToken
        ? (parsedAmounts[Field.INPUT] as CurrencyAmount<Token>)
        : undefined),
    isSupportedChain(chainId) ? UNIVERSAL_ROUTER_ADDRESS(chainId) : undefined
  )

  const maxInputAmount: CurrencyAmount<Currency> | undefined = useMemo(
    () => maxAmountSpend(currencyBalances[Field.INPUT]),
    [currencyBalances]
  )
  const showMaxButton = Boolean(maxInputAmount?.greaterThan(0) && !parsedAmounts[Field.INPUT]?.equalTo(maxInputAmount))
  const swapFiatValues = useMemo(() => {
    return { amountIn: fiatValueTradeInput.data, amountOut: fiatValueTradeOutput.data }
  }, [fiatValueTradeInput, fiatValueTradeOutput])

  // the callback to execute the swap
  const { callback: swapCallback } = useSwapCallback(
    trade,
    swapFiatValues,
    allowedSlippage,
    allowance.state === AllowanceState.ALLOWED ? allowance.permitSignature : undefined
  )

  const handleContinueToReview = useCallback(() => {
    setSwapState({
      tradeToConfirm: trade,
      swapError: undefined,
      showConfirm: true,
      txHash: undefined,
    })
  }, [trade])

  const handleSwap = useCallback(() => {
    if (!swapCallback) {
      return
    }
    if (stablecoinPriceImpact && !confirmPriceImpactWithoutFee(stablecoinPriceImpact)) {
      return
    }
    setSwapState((currentState) => ({
      ...currentState,
      swapError: undefined,
      txHash: undefined,
    }))
    swapCallback()
      .then((hash) => {
        setSwapState((currentState) => ({
          ...currentState,
          swapError: undefined,
          txHash: hash,
        }))
        sendEvent({
          category: 'Swap',
          action: 'transaction hash',
          label: hash,
        })
        sendEvent({
          category: 'Swap',
          action:
            recipient === null
              ? 'Swap w/o Send'
              : (recipientAddress ?? recipient) === account
              ? 'Swap w/o Send + recipient'
              : 'Swap w/ Send',
          label: [TRADE_STRING, trade?.inputAmount?.currency?.symbol, trade?.outputAmount?.currency?.symbol, 'MH'].join(
            '/'
          ),
        })
      })
      .catch((error) => {
        if (!didUserReject(error)) {
          sendAnalyticsEvent(SwapEventName.SWAP_ERROR, {
            confirmedTrade: tradeToConfirm,
          })
        }
        setSwapState((currentState) => ({
          ...currentState,
          swapError: error,
          txHash: undefined,
        }))
      })
  }, [
    swapCallback,
    stablecoinPriceImpact,
    recipient,
    recipientAddress,
    account,
    trade?.inputAmount?.currency?.symbol,
    trade?.outputAmount?.currency?.symbol,
    tradeToConfirm,
  ])

  // errors
  const [swapQuoteReceivedDate, setSwapQuoteReceivedDate] = useState<Date | undefined>()

  // warnings on the greater of fiat value price impact and execution price impact
  const { priceImpactSeverity, largerPriceImpact } = useMemo(() => {
    const marketPriceImpact = trade?.priceImpact ? computeRealizedPriceImpact(trade) : undefined
    const largerPriceImpact = largerPercentValue(marketPriceImpact, stablecoinPriceImpact)
    return { priceImpactSeverity: warningSeverity(largerPriceImpact), largerPriceImpact }
  }, [stablecoinPriceImpact, trade])

  const handleConfirmDismiss = useCallback(() => {
    setSwapState((currentState) => ({ ...currentState, showConfirm: false }))
    // if there was a tx hash, we want to clear the input
    if (txHash) {
      onUserInput(Field.INPUT, '')
    }
  }, [onUserInput, txHash])

  const handleAcceptChanges = useCallback(() => {
    setSwapState((currentState) => ({ ...currentState, tradeToConfirm: trade }))
  }, [trade])

  const handleInputSelect = useCallback(
    (inputCurrency: Currency) => {
      onCurrencySelection(Field.INPUT, inputCurrency)
      onCurrencyChange?.({
        [Field.INPUT]: {
          currencyId: getSwapCurrencyId(inputCurrency),
        },
        [Field.OUTPUT]: state[Field.OUTPUT],
      })
    },
    [onCurrencyChange, onCurrencySelection, state]
  )

  const handleMaxInput = useCallback(() => {
    maxInputAmount && onUserInput(Field.INPUT, maxInputAmount.toExact())
    sendEvent({
      category: 'Swap',
      action: 'Max',
    })
  }, [maxInputAmount, onUserInput])

  const handleOutputSelect = useCallback(
    (outputCurrency: Currency) => {
      onCurrencySelection(Field.OUTPUT, outputCurrency)
      onCurrencyChange?.({
        [Field.INPUT]: state[Field.INPUT],
        [Field.OUTPUT]: {
          currencyId: getSwapCurrencyId(outputCurrency),
        },
      })
    },
    [onCurrencyChange, onCurrencySelection, state]
  )

  const showPriceImpactWarning = largerPriceImpact && priceImpactSeverity > 3

  const prevTrade = usePrevious(trade)
  useEffect(() => {
    if (!trade || prevTrade === trade) return // no new swap quote to log

    setSwapQuoteReceivedDate(new Date())
    sendAnalyticsEvent(SwapEventName.SWAP_QUOTE_RECEIVED, {
      ...formatEventPropertiesForTrade(trade, allowedSlippage, trade.gasUseEstimateUSD ?? undefined, method),
      ...trace,
    })
  }, [prevTrade, trade, trace, allowedSlippage, method])

  const showDetailsDropdown = Boolean(
    !showWrap && userHasSpecifiedInputOutput && (trade || routeIsLoading || routeIsSyncing)
  )

  const switchChain = useSwitchChain()
  const switchingChain = useAppSelector((state) => state.wallets.switchingChain)

  return (
    <SwapWrapper chainId={chainId} className={className} id="swap-page">
      <TokenSafetyModal
        isOpen={importTokensNotInDefault.length > 0 && !dismissTokenWarning}
        tokenAddress={importTokensNotInDefault[0]?.address}
        secondTokenAddress={importTokensNotInDefault[1]?.address}
        onContinue={handleConfirmTokenWarning}
        onCancel={handleDismissTokenWarning}
        showCancel={true}
      />
      <SwapHeader autoSlippage={autoSlippage} chainId={chainId} />
      {trade && showConfirm && (
        <ConfirmSwapModal
          trade={trade}
          originalTrade={tradeToConfirm}
          onAcceptChanges={handleAcceptChanges}
          txHash={txHash}
          allowedSlippage={allowedSlippage}
          onConfirm={handleSwap}
          allowance={allowance}
          swapError={swapError}
          onDismiss={handleConfirmDismiss}
          swapQuoteReceivedDate={swapQuoteReceivedDate}
          fiatValueInput={fiatValueTradeInput}
          fiatValueOutput={fiatValueTradeOutput}
        />
      )}
      {showPriceImpactModal && showPriceImpactWarning && (
        <PriceImpactModal
          priceImpact={largerPriceImpact}
          onDismiss={() => setShowPriceImpactModal(false)}
          onContinue={() => {
            setShowPriceImpactModal(false)
            handleContinueToReview()
          }}
        />
      )}

      <div style={{ display: 'relative' }}>
        <SwapSection>
          <Trace section={InterfaceSectionName.CURRENCY_INPUT_PANEL}>
            <SwapCurrencyInputPanel
              label={
                independentField === Field.OUTPUT && !showWrap ? <Trans>From (at most)</Trans> : <Trans>From</Trans>
              }
              disabled={disableTokenInputs}
              value={formattedAmounts[Field.INPUT]}
              showMaxButton={showMaxButton}
              currency={currencies[Field.INPUT] ?? null}
              onUserInput={handleTypeInput}
              onMax={handleMaxInput}
              fiatValue={showFiatValueInput ? fiatValueInput : undefined}
              onCurrencySelect={handleInputSelect}
              otherCurrency={currencies[Field.OUTPUT]}
              showCommonBases
              id={InterfaceSectionName.CURRENCY_INPUT_PANEL}
              loading={independentField === Field.OUTPUT && routeIsSyncing}
            />
          </Trace>
        </SwapSection>
        <ArrowWrapper clickable={isSupportedChain(chainId)}>
          <TraceEvent
            events={[BrowserEvent.onClick]}
            name={SwapEventName.SWAP_TOKENS_REVERSED}
            element={InterfaceElementName.SWAP_TOKENS_REVERSE_ARROW_BUTTON}
          >
            <ArrowContainer
              data-testid="swap-currency-button"
              onClick={() => {
                !disableTokenInputs && onSwitchTokens()
              }}
              color={theme.textPrimary}
            >
              <ArrowDown
                size="16"
                color={currencies[Field.INPUT] && currencies[Field.OUTPUT] ? theme.textPrimary : theme.textTertiary}
              />
            </ArrowContainer>
          </TraceEvent>
        </ArrowWrapper>
      </div>
      <AutoColumn gap="xs">
        <div>
          <OutputSwapSection>
            <Trace section={InterfaceSectionName.CURRENCY_OUTPUT_PANEL}>
              <SwapCurrencyInputPanel
                value={formattedAmounts[Field.OUTPUT]}
                disabled={disableTokenInputs}
                onUserInput={handleTypeOutput}
                label={independentField === Field.INPUT && !showWrap ? <Trans>To (at least)</Trans> : <Trans>To</Trans>}
                showMaxButton={false}
                hideBalance={false}
                fiatValue={showFiatValueOutput ? fiatValueOutput : undefined}
                priceImpact={stablecoinPriceImpact}
                currency={currencies[Field.OUTPUT] ?? null}
                onCurrencySelect={handleOutputSelect}
                otherCurrency={currencies[Field.INPUT]}
                showCommonBases
                id={InterfaceSectionName.CURRENCY_OUTPUT_PANEL}
                loading={independentField === Field.INPUT && routeIsSyncing}
              />
            </Trace>
            {recipient !== null && !showWrap ? (
              <>
                <AutoRow justify="space-between" style={{ padding: '0 1rem' }}>
                  <ArrowWrapper clickable={false}>
                    <ArrowDown size="16" color={theme.textSecondary} />
                  </ArrowWrapper>
                  <LinkStyledButton id="remove-recipient-button" onClick={() => onChangeRecipient(null)}>
                    <Trans>- Remove recipient</Trans>
                  </LinkStyledButton>
                </AutoRow>
                <AddressInputPanel id="recipient" value={recipient} onChange={onChangeRecipient} />
              </>
            ) : null}
          </OutputSwapSection>
        </div>
        {showDetailsDropdown && (
          <SwapDetailsDropdown
            trade={trade}
            syncing={routeIsSyncing}
            loading={routeIsLoading}
            allowedSlippage={allowedSlippage}
          />
        )}
        {showPriceImpactWarning && <PriceImpactWarning priceImpact={largerPriceImpact} />}
        <div>
          {swapIsUnsupported ? (
            <ButtonPrimary disabled={true}>
              <ThemedText.DeprecatedMain mb="4px">
                <Trans>Unsupported Asset</Trans>
              </ThemedText.DeprecatedMain>
            </ButtonPrimary>
          ) : switchingChain ? (
            <ButtonPrimary disabled={true}>
              <Trans>Connecting to {getChainInfo(switchingChain)?.label}</Trans>
            </ButtonPrimary>
          ) : !account ? (
            <TraceEvent
              events={[BrowserEvent.onClick]}
              name={InterfaceEventName.CONNECT_WALLET_BUTTON_CLICKED}
              properties={{ received_swap_quote: getIsValidSwapQuote(trade, tradeState, swapInputError) }}
              element={InterfaceElementName.CONNECT_WALLET_BUTTON}
            >
              <ButtonLight onClick={toggleWalletDrawer} fontWeight={600}>
                <Trans>Connect Wallet</Trans>
              </ButtonLight>
            </TraceEvent>
          ) : chainId && chainId !== connectedChainId ? (
            <ButtonPrimary
              onClick={async () => {
                try {
                  await switchChain(connector, chainId)
                } catch (error) {
                  if (didUserReject(error)) {
                    // Ignore error, which keeps the user on the previous chain.
                  } else {
                    // TODO(WEB-3306): This UX could be improved to show an error state.
                    throw error
                  }
                }
              }}
            >
              Connect to {getChainInfo(chainId)?.label}
            </ButtonPrimary>
          ) : showWrap ? (
            <ButtonPrimary
              disabled={Boolean(wrapInputError)}
              onClick={onWrap}
              fontWeight={600}
              data-testid="wrap-button"
            >
              {wrapInputError ? (
                <WrapErrorText wrapInputError={wrapInputError} />
              ) : wrapType === WrapType.WRAP ? (
                <Trans>Wrap</Trans>
              ) : wrapType === WrapType.UNWRAP ? (
                <Trans>Unwrap</Trans>
              ) : null}
            </ButtonPrimary>
          ) : routeNotFound && userHasSpecifiedInputOutput && !routeIsLoading && !routeIsSyncing ? (
            <GrayCard style={{ textAlign: 'center' }}>
              <ThemedText.DeprecatedMain mb="4px">
                <Trans>Insufficient liquidity for this trade.</Trans>
              </ThemedText.DeprecatedMain>
            </GrayCard>
          ) : (
            <TraceEvent
              events={[BrowserEvent.onClick]}
              name={SharedEventName.ELEMENT_CLICKED}
              element={InterfaceElementName.SWAP_BUTTON}
            >
              <ButtonError
                onClick={() => {
                  showPriceImpactWarning ? setShowPriceImpactModal(true) : handleContinueToReview()
                }}
                id="swap-button"
                data-testid="swap-button"
                disabled={!isValid || routeIsSyncing || routeIsLoading}
                error={isValid && priceImpactSeverity > 2 && allowance.state === AllowanceState.ALLOWED}
              >
                <Text fontSize={20} fontWeight={600}>
                  {swapInputError ? (
                    swapInputError
                  ) : routeIsSyncing || routeIsLoading ? (
                    <Trans>Swap</Trans>
                  ) : priceImpactSeverity > 2 ? (
                    <Trans>Swap Anyway</Trans>
                  ) : (
                    <Trans>Swap</Trans>
                  )}
                </Text>
              </ButtonError>
            </TraceEvent>
          )}
        </div>
      </AutoColumn>
    </SwapWrapper>
  )
}
