Merge pull request #3 from Uniswap/FoR-main

feat: FoR commits from mgtm repo

.env

-REACT_APP_INFURA_KEY="4bf032f2d38a4ed6bb975b80d6340847"
+# These API keys are intentionally public. Please do not report them - thank you for your concern.
 REACT_APP_AMPLITUDE_PROXY_URL="https://api.uniswap.org/v1/amplitude-proxy"
 REACT_APP_AWS_API_REGION="us-east-2"
 REACT_APP_AWS_API_ENDPOINT="https://beta.api.uniswap.org/v1/graphql"
 REACT_APP_TEMP_API_URL="https://temp.api.uniswap.org/v1"
 REACT_APP_SENTRY_DSN="https://a3c62e400b8748b5a8d007150e2f38b7@o1037921.ingest.sentry.io/4504255148851200"
 ESLINT_NO_DEV_ERRORS=true
+REACT_APP_INFURA_KEY="4bf032f2d38a4ed6bb975b80d6340847"
+REACT_APP_MOONPAY_API="https://api.moonpay.com"
+REACT_APP_MOONPAY_LINK="https://us-central1-uniswap-mobile.cloudfunctions.net/signMoonpayLinkStaging?platform=web"
+REACT_APP_MOONPAY_PUBLISHABLE_KEY="pk_test_DycfESRid31UaSxhI5yWKe1r5E5kKSz"

.env.production

 REACT_APP_AMPLITUDE_PROXY_URL="https://api.uniswap.org/v1/amplitude-proxy"
-REACT_APP_INFURA_KEY="099fc58e0de9451d80b18d7c74caa7c1"
+REACT_APP_AWS_API_ENDPOINT="https://api.uniswap.org/v1/graphql"
 REACT_APP_FORTMATIC_KEY="pk_live_F937DF033A1666BF"
 REACT_APP_GOOGLE_ANALYTICS_ID="G-KDP9B6W4H8"
+REACT_APP_INFURA_KEY="099fc58e0de9451d80b18d7c74caa7c1"
+REACT_APP_MOONPAY_API="https://api.moonpay.com"
+REACT_APP_MOONPAY_LINK="https://us-central1-uniswap-mobile.cloudfunctions.net/signMoonpayLink?platform=web"
+REACT_APP_MOONPAY_PUBLISHABLE_KEY="pk_live_uQG4BJC4w3cxnqpcSqAfohdBFDTsY6E"
 REACT_APP_FIREBASE_KEY="AIzaSyBcZWwTcTJHj_R6ipZcrJkXdq05PuX0Rs0"
-REACT_APP_AWS_API_ENDPOINT="https://api.uniswap.org/v1/graphql"
 THE_GRAPH_SCHEMA_ENDPOINT="https://api.thegraph.com/subgraphs/name/uniswap/uniswap-v3"

src/components/Button/LoadingButtonSpinner.tsx

+import { SpinnerSVG } from 'theme'
+
+const ButtonLoadingSpinner = (props: React.ComponentPropsWithoutRef<'svg'>) => (
+  <SpinnerSVG width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg" {...props}>
+    <path
+      opacity="0.1"
+      d="M18.8334 10.0003C18.8334 14.6027 15.1025 18.3337 10.5001 18.3337C5.89771 18.3337 2.16675 14.6027 2.16675 10.0003C2.16675 5.39795 5.89771 1.66699 10.5001 1.66699C15.1025 1.66699 18.8334 5.39795 18.8334 10.0003ZM4.66675 10.0003C4.66675 13.222 7.27842 15.8337 10.5001 15.8337C13.7217 15.8337 16.3334 13.222 16.3334 10.0003C16.3334 6.77867 13.7217 4.16699 10.5001 4.16699C7.27842 4.16699 4.66675 6.77867 4.66675 10.0003Z"
+    />
+    <path d="M17.5834 10.0003C18.2738 10.0003 18.843 9.4376 18.7398 8.755C18.6392 8.0891 18.458 7.43633 18.1991 6.8113C17.7803 5.80025 17.1665 4.88159 16.3926 4.10777C15.6188 3.33395 14.7002 2.72012 13.6891 2.30133C13.0641 2.04243 12.4113 1.86121 11.7454 1.76057C11.0628 1.6574 10.5001 2.22664 10.5001 2.91699C10.5001 3.60735 11.066 4.15361 11.7405 4.30041C12.0789 4.37406 12.4109 4.47786 12.7324 4.61103C13.4401 4.90418 14.0832 5.33386 14.6249 5.87554C15.1665 6.41721 15.5962 7.06027 15.8894 7.76801C16.0225 8.08949 16.1264 8.42147 16.2 8.75986C16.3468 9.43443 16.8931 10.0003 17.5834 10.0003Z" />
+  </SpinnerSVG>
+)
+
+export default ButtonLoadingSpinner

src/components/Button/index.tsx

@@ -5,6 +5,8 @@ import styled, { DefaultTheme, useTheme } from 'styled-components/macro'
 
 import { RowBetween } from '../Row'
 
+export { default as LoadingButtonSpinner } from './LoadingButtonSpinner'
+
 type ButtonProps = Omit<ButtonPropsOriginal, 'css'>
 
 export const BaseButton = styled(RebassButton)<
@@ -362,18 +364,6 @@ export function ButtonRadioChecked({ active = false, children, ...rest }: { acti
   }
 }
 
-const ButtonOverlay = styled.div`
-  background-color: transparent;
-  bottom: 0;
-  border-radius: 16px;
-  height: 100%;
-  left: 0;
-  position: absolute;
-  right: 0;
-  top: 0;
-  transition: 150ms ease background-color;
-  width: 100%;
-`
 export enum ButtonSize {
   small,
   medium,
@@ -466,7 +456,18 @@ function pickThemeButtonTextColor({ theme, emphasis }: { theme: DefaultTheme; em
       return theme.textPrimary
   }
 }
-
+const ButtonOverlay = styled.div`
+  background-color: transparent;
+  bottom: 0;
+  border-radius: inherit;
+  height: 100%;
+  left: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+  transition: 150ms ease background-color;
+  width: 100%;
+`
 const BaseThemeButton = styled.button<BaseButtonProps>`
   align-items: center;
   background-color: ${pickThemeButtonBackgroundColor};
@@ -484,16 +485,13 @@ const BaseThemeButton = styled.button<BaseButtonProps>`
   padding: ${pickThemeButtonPadding};
   position: relative;
   transition: 150ms ease opacity;
+  user-select: none;
 
   :active {
     ${ButtonOverlay} {
       background-color: ${({ theme }) => theme.stateOverlayPressed};
     }
   }
-  :disabled {
-    cursor: default;
-    opacity: 0.6;
-  }
   :focus {
     ${ButtonOverlay} {
       background-color: ${({ theme }) => theme.stateOverlayPressed};
@@ -504,6 +502,17 @@ const BaseThemeButton = styled.button<BaseButtonProps>`
       background-color: ${({ theme }) => theme.stateOverlayHover};
     }
   }
+  :disabled {
+    cursor: default;
+    opacity: 0.6;
+  }
+  :disabled:active,
+  :disabled:focus,
+  :disabled:hover {
+    ${ButtonOverlay} {
+      background-color: transparent;
+    }
+  }
 `
 
 interface ThemeButtonProps extends React.ComponentPropsWithoutRef<'button'>, BaseButtonProps {}

src/components/FeatureFlagModal/FeatureFlagModal.tsx

 import { BaseVariant, FeatureFlag, featureFlagSettings, useUpdateFlag } from 'featureFlags'
+import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import { Permit2Variant, usePermit2Flag } from 'featureFlags/flags/permit2'
 import { TraceJsonRpcVariant, useTraceJsonRpcFlag } from 'featureFlags/flags/traceJsonRpc'
 import { useAtomValue, useUpdateAtom } from 'jotai/utils'
@@ -208,6 +209,12 @@ export default function FeatureFlagModal() {
         featureFlag={FeatureFlag.permit2}
         label="Permit 2 / Universal Router"
       />
+      <FeatureFlagOption
+        variant={BaseVariant}
+        value={useFiatOnrampFlag()}
+        featureFlag={FeatureFlag.fiatOnramp}
+        label="Fiat on-ramp"
+      />
       <FeatureFlagGroup name="Debug">
         <FeatureFlagOption
           variant={TraceJsonRpcVariant}

src/components/FiatOnrampAnnouncement/index.tsx

+import { Trans } from '@lingui/macro'
+import { useWeb3React } from '@web3-react/core'
+import fiatMaskUrl from 'assets/svg/fiat_mask.svg'
+import { BaseVariant } from 'featureFlags'
+import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
+import { useCallback, useEffect, useState } from 'react'
+import { X } from 'react-feather'
+import { useToggleWalletDropdown } from 'state/application/hooks'
+import { useAppSelector } from 'state/hooks'
+import { useFiatOnrampAck } from 'state/user/hooks'
+import styled from 'styled-components/macro'
+import { ThemedText } from 'theme'
+import { isMobile } from 'utils/userAgent'
+
+const Arrow = styled.div`
+  top: -4px;
+  height: 16px;
+  position: absolute;
+  right: 16px;
+  width: 16px;
+
+  ::before {
+    background: hsl(315.75, 93%, 83%);
+    border-top: none;
+    border-left: none;
+    box-sizing: border-box;
+    content: '';
+    height: 16px;
+    position: absolute;
+    transform: rotate(45deg);
+    width: 16px;
+  }
+`
+const ArrowWrapper = styled.div`
+  position: absolute;
+  right: 16px;
+  top: 90%;
+  width: 100%;
+  max-width: 320px;
+  min-height: 92px;
+
+  @media screen and (min-width: ${({ theme }) => theme.breakpoint.lg}px) {
+    right: 36px;
+  }
+`
+
+const CloseIcon = styled(X)`
+  color: white;
+  cursor: pointer;
+  position: absolute;
+  top: 8px;
+  right: 8px;
+  z-index: 1;
+`
+const Wrapper = styled.button`
+  background: radial-gradient(105% 250% at 100% 5%, hsla(318, 95%, 85%) 1%, hsla(331, 80%, 75%, 0.1) 84%),
+    linear-gradient(180deg, hsla(296, 92%, 67%, 0.5) 0%, hsla(313, 96%, 60%, 0.5) 130%);
+  background-color: hsla(297, 93%, 68%, 1);
+  border-radius: 12px;
+  border: none;
+  cursor: pointer;
+  outline: none;
+  overflow: hidden;
+  position: relative;
+  text-align: start;
+  max-width: 320px;
+  min-height: 92px;
+  width: 100%;
+
+  :before {
+    background-image: url(${fiatMaskUrl});
+    background-repeat: no-repeat;
+    content: '';
+    height: 100%;
+    position: absolute;
+    right: -154px; // roughly width of fiat mask image
+    top: 0;
+    width: 100%;
+  }
+`
+
+const Header = styled(ThemedText.SubHeader)`
+  color: white;
+  margin: 0;
+  padding: 12px 12px 4px;
+  position: relative;
+`
+const Body = styled(ThemedText.BodySmall)`
+  color: white;
+  margin: 0 12px 12px 12px !important;
+  position: relative;
+`
+
+const ANNOUNCEMENT_RENDERED = 'FiatOnrampAnnouncement-rendered'
+const ANNOUNCEMENT_DISMISSED = 'FiatOnrampAnnouncement-dismissed'
+
+const MAX_RENDER_COUNT = 3
+export function FiatOnrampAnnouncement() {
+  const { account } = useWeb3React()
+  const [acks, acknowledge] = useFiatOnrampAck()
+  const [locallyDismissed, setLocallyDismissed] = useState(false)
+  useEffect(() => {
+    if (!sessionStorage.getItem(ANNOUNCEMENT_RENDERED)) {
+      acknowledge({ renderCount: acks.renderCount + 1 })
+      sessionStorage.setItem(ANNOUNCEMENT_RENDERED, 'true')
+    }
+  }, [acknowledge, acks.renderCount])
+
+  const handleClose = useCallback(() => {
+    setLocallyDismissed(true)
+    sessionStorage.setItem(ANNOUNCEMENT_DISMISSED, 'true')
+  }, [])
+
+  const toggleWalletDropdown = useToggleWalletDropdown()
+  const handleClick = useCallback(() => {
+    toggleWalletDropdown()
+    acknowledge({ user: true })
+  }, [acknowledge, toggleWalletDropdown])
+  const fiatOnrampFlag = useFiatOnrampFlag()
+  const openModal = useAppSelector((state) => state.application.openModal)
+
+  if (
+    !account ||
+    acks?.user ||
+    fiatOnrampFlag === BaseVariant.Control ||
+    locallyDismissed ||
+    sessionStorage.getItem(ANNOUNCEMENT_DISMISSED) ||
+    acks.renderCount >= MAX_RENDER_COUNT ||
+    isMobile ||
+    openModal !== null
+  ) {
+    return null
+  }
+  return (
+    <ArrowWrapper>
+      <Arrow />
+      <CloseIcon onClick={handleClose} />
+      <Wrapper onClick={handleClick}>
+        <Header>
+          <Trans>Buy crypto</Trans>
+        </Header>
+        <Body>
+          <Trans>Get tokens at the best prices in web3 on Uniswap, powered by Moonpay.</Trans>
+        </Body>
+      </Wrapper>
+    </ArrowWrapper>
+  )
+}

src/components/FiatOnrampModal/index.tsx

+import { Trans } from '@lingui/macro'
+import { useWeb3React } from '@web3-react/core'
+import { useCallback, useEffect, useState } from 'react'
+import { useCloseModal, useModalIsOpen } from 'state/application/hooks'
+import { ApplicationModal } from 'state/application/reducer'
+import styled, { useTheme } from 'styled-components/macro'
+import { CustomLightSpinner, ThemedText } from 'theme'
+
+import Circle from '../../assets/images/blue-loader.svg'
+import Modal from '../Modal'
+
+const Wrapper = styled.div`
+  background-color: ${({ theme }) => theme.backgroundSurface};
+  border-radius: 20px;
+  box-shadow: ${({ theme }) => theme.deepShadow};
+  display: flex;
+  flex-flow: column nowrap;
+  margin: 0;
+  min-height: 720px;
+  min-width: 375px;
+  position: relative;
+  width: 100%;
+`
+
+const ErrorText = styled(ThemedText.BodyPrimary)`
+  color: ${({ theme }) => theme.accentFailure};
+  margin: auto !important;
+  text-align: center;
+  width: 90%;
+`
+const StyledIframe = styled.iframe`
+  background-color: ${({ theme }) => theme.white};
+  border-radius: 12px;
+  bottom: 0;
+  left: 0;
+  height: calc(100% - 16px);
+  margin: 8px;
+  padding: 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+  width: calc(100% - 16px);
+`
+const StyledSpinner = styled(CustomLightSpinner)`
+  bottom: 0;
+  left: 0;
+  margin: auto;
+  position: absolute;
+  right: 0;
+  top: 0;
+`
+
+const MOONPAY_SUPPORTED_CURRENCY_CODES = [
+  'eth',
+  'eth_arbitrum',
+  'eth_optimism',
+  'eth_polygon',
+  'weth',
+  'wbtc',
+  'matic_polygon',
+  'polygon',
+  'usdc_arbitrum',
+  'usdc_optimism',
+  'usdc_polygon',
+]
+
+export default function FiatOnrampModal() {
+  const { account } = useWeb3React()
+  const theme = useTheme()
+  const closeModal = useCloseModal(ApplicationModal.FIAT_ONRAMP)
+  const fiatOnrampModalOpen = useModalIsOpen(ApplicationModal.FIAT_ONRAMP)
+
+  const [signedIframeUrl, setSignedIframeUrl] = useState<string | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const [loading, setLoading] = useState(false)
+
+  const fetchSignedIframeUrl = useCallback(async () => {
+    if (!account) {
+      setError('Please connect an account before making a purchase.')
+      return
+    }
+    setLoading(true)
+    setError(null)
+    try {
+      const signedIframeUrlFetchEndpoint = process.env.REACT_APP_MOONPAY_LINK as string
+      const res = await fetch(signedIframeUrlFetchEndpoint, {
+        headers: {
+          Accept: 'application/json',
+          'Content-Type': 'application/json',
+        },
+        method: 'POST',
+        body: JSON.stringify({
+          colorCode: theme.accentAction,
+          defaultCurrencyCode: 'eth',
+          redirectUrl: 'https://app.uniswap.org/#/swap',
+          walletAddresses: JSON.stringify(
+            MOONPAY_SUPPORTED_CURRENCY_CODES.reduce(
+              (acc, currencyCode) => ({
+                ...acc,
+                [currencyCode]: account,
+              }),
+              {}
+            )
+          ),
+        }),
+      })
+      const { url } = await res.json()
+      setSignedIframeUrl(url)
+    } catch (e) {
+      console.log('there was an error fetching the link', e)
+      setError(e.toString())
+    } finally {
+      setLoading(false)
+    }
+  }, [account, theme.accentAction])
+
+  useEffect(() => {
+    fetchSignedIframeUrl()
+  }, [fetchSignedIframeUrl])
+
+  return (
+    <Modal isOpen={fiatOnrampModalOpen} onDismiss={closeModal} maxHeight={720}>
+      <Wrapper data-testid="fiat-onramp-modal">
+        {error ? (
+          <>
+            <ThemedText.MediumHeader>
+              <Trans>Moonpay Fiat On-ramp iframe</Trans>
+            </ThemedText.MediumHeader>
+            <ErrorText>
+              <Trans>something went wrong!</Trans>
+              <br />
+              {error}
+            </ErrorText>
+          </>
+        ) : loading ? (
+          <StyledSpinner src={Circle} alt="loading spinner" size="90px" />
+        ) : (
+          <StyledIframe src={signedIframeUrl ?? ''} frameBorder="0" title="fiat-onramp-iframe" />
+        )}
+      </Wrapper>
+    </Modal>
+  )
+}

src/components/Modal/index.tsx

@@ -9,7 +9,7 @@ import { isMobile } from '../../utils/userAgent'
 
 const AnimatedDialogOverlay = animated(DialogOverlay)
 
-const StyledDialogOverlay = styled(AnimatedDialogOverlay)<{ scrollOverlay?: boolean }>`
+const StyledDialogOverlay = styled(AnimatedDialogOverlay)<{ $scrollOverlay?: boolean }>`
   &[data-reach-dialog-overlay] {
     z-index: ${Z_INDEX.modalBackdrop};
     background-color: transparent;
@@ -17,7 +17,7 @@ const StyledDialogOverlay = styled(AnimatedDialogOverlay)<{ scrollOverlay?: bool
 
     display: flex;
     align-items: center;
-    overflow-y: ${({ scrollOverlay }) => scrollOverlay && 'scroll'};
+    overflow-y: ${({ $scrollOverlay }) => $scrollOverlay && 'scroll'};
     justify-content: center;
 
     background-color: ${({ theme }) => theme.backgroundScrim};
@@ -89,7 +89,7 @@ interface ModalProps {
   maxWidth?: number
   initialFocusRef?: React.RefObject<any>
   children?: React.ReactNode
-  scrollOverlay?: boolean
+  $scrollOverlay?: boolean
   hideBorder?: boolean
   isBottomSheet?: boolean
 }
@@ -103,7 +103,7 @@ export default function Modal({
   initialFocusRef,
   children,
   onSwipe = onDismiss,
-  scrollOverlay,
+  $scrollOverlay,
   isBottomSheet = isMobile,
   hideBorder = false,
 }: ModalProps) {
@@ -136,7 +136,7 @@ export default function Modal({
               onDismiss={onDismiss}
               initialFocusRef={initialFocusRef}
               unstable_lockFocusAcrossFrames={false}
-              scrollOverlay={scrollOverlay}
+              $scrollOverlay={$scrollOverlay}
             >
               <StyledDialogContent
                 {...(isMobile
@@ -149,7 +149,7 @@ export default function Modal({
                 $minHeight={minHeight}
                 $maxHeight={maxHeight}
                 $isBottomSheet={isBottomSheet}
-                $scrollOverlay={scrollOverlay}
+                $scrollOverlay={$scrollOverlay}
                 $hideBorder={hideBorder}
                 $maxWidth={maxWidth}
               >

src/components/NavBar/MenuDropdown.tsx

@@ -16,6 +16,7 @@ import { body, bodySmall } from 'nft/css/common.css'
 import { themeVars } from 'nft/css/sprinkles.css'
 import { ReactNode, useReducer, useRef } from 'react'
 import { NavLink, NavLinkProps } from 'react-router-dom'
+import styled from 'styled-components/macro'
 import { isDevelopmentEnv, isStagingEnv } from 'utils/env'
 
 import { useToggleModal } from '../../state/application/hooks'
@@ -50,8 +51,13 @@ const PrimaryMenuRow = ({
   )
 }
 
+const StyledBox = styled(Box)`
+  align-items: center;
+  display: flex;
+  justify-content: center;
+`
 const PrimaryMenuRowText = ({ children }: { children: ReactNode }) => {
-  return <Box className={`${styles.PrimaryText} ${body}`}>{children}</Box>
+  return <StyledBox className={`${styles.PrimaryText} ${body}`}>{children}</StyledBox>
 }
 
 PrimaryMenuRow.Text = PrimaryMenuRowText
@@ -115,7 +121,6 @@ export const MenuDropdown = () => {
   const [isOpen, toggleOpen] = useReducer((s) => !s, false)
   const togglePrivacyPolicy = useToggleModal(ApplicationModal.PRIVACY_POLICY)
   const openFeatureFlagsModal = useToggleModal(ApplicationModal.FEATURE_FLAGS)
-
   const ref = useRef<HTMLDivElement>(null)
   useOnClickOutside(ref, isOpen ? toggleOpen : undefined)
 

src/components/TopLevelModals/index.tsx

 import { useWeb3React } from '@web3-react/core'
 import AddressClaimModal from 'components/claim/AddressClaimModal'
 import ConnectedAccountBlocked from 'components/ConnectedAccountBlocked'
+import FiatOnrampModal from 'components/FiatOnrampModal'
+import { BaseVariant } from 'featureFlags'
+import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import useAccountRiskCheck from 'hooks/useAccountRiskCheck'
 import NftExploreBanner from 'nft/components/nftExploreBanner/NftExploreBanner'
 import { lazy } from 'react'
@@ -18,20 +21,23 @@ export default function TopLevelModals() {
   const blockedAccountModalOpen = useModalIsOpen(ApplicationModal.BLOCKED_ACCOUNT)
   const { account } = useWeb3React()
   const location = useLocation()
+  const fiatOnrampFlagEnabled = useFiatOnrampFlag() === BaseVariant.Enabled
   const pageShowsNftPromoBanner =
-    location.pathname.startsWith('/swap') ||
-    location.pathname.startsWith('/tokens') ||
-    location.pathname.startsWith('/pool')
+    !fiatOnrampFlagEnabled &&
+    (location.pathname.startsWith('/swap') ||
+      location.pathname.startsWith('/tokens') ||
+      location.pathname.startsWith('/pool'))
   useAccountRiskCheck(account)
-  const open = Boolean(blockedAccountModalOpen && account)
+  const accountBlocked = Boolean(blockedAccountModalOpen && account)
   return (
     <>
       <AddressClaimModal isOpen={addressClaimOpen} onDismiss={addressClaimToggle} />
-      <ConnectedAccountBlocked account={account} isOpen={open} />
+      <ConnectedAccountBlocked account={account} isOpen={accountBlocked} />
       <Bag />
       <TransactionCompleteModal />
       <AirdropModal />
       {pageShowsNftPromoBanner && <NftExploreBanner />}
+      {fiatOnrampFlagEnabled && <FiatOnrampModal />}
     </>
   )
 }

src/components/TransactionConfirmationModal/index.tsx

@@ -348,7 +348,7 @@ export default function TransactionConfirmationModal({
 
   // confirmation screen
   return (
-    <Modal isOpen={isOpen} scrollOverlay={true} onDismiss={onDismiss} maxHeight={90}>
+    <Modal isOpen={isOpen} $scrollOverlay={true} onDismiss={onDismiss} maxHeight={90}>
       {isL2ChainId(chainId) && (hash || attemptingTxn) ? (
         <L2Content chainId={chainId} hash={hash} onDismiss={onDismiss} pendingText={pendingText} />
       ) : attemptingTxn ? (

src/components/Web3Status/index.tsx

@@ -2,6 +2,7 @@ import { Trans } from '@lingui/macro'
 import { TraceEvent } from '@uniswap/analytics'
 import { BrowserEvent, ElementName, EventName } from '@uniswap/analytics-events'
 import { useWeb3React } from '@web3-react/core'
+import { FiatOnrampAnnouncement } from 'components/FiatOnrampAnnouncement'
 import { IconWrapper } from 'components/Identicon/StatusIcon'
 import WalletDropdown from 'components/WalletDropdown'
 import { getConnection } from 'connection/utils'
@@ -312,6 +313,7 @@ export default function Web3Status() {
   return (
     <span ref={ref}>
       <Web3StatusInner />
+      <FiatOnrampAnnouncement />
       <WalletModal ENSName={ENSName ?? undefined} pendingTransactions={pending} confirmedTransactions={confirmed} />
       <Portal>
         <span ref={walletRef}>

src/featureFlags/flags/featureFlags.ts

 export enum FeatureFlag {
+  fiatOnramp = 'fiatOnramp',
   traceJsonRpc = 'traceJsonRpc',
   permit2 = 'permit2',
 }

src/featureFlags/flags/fiatOnramp.ts

+import { BaseVariant, FeatureFlag, useBaseFlag } from '../index'
+
+export function useFiatOnrampFlag(): BaseVariant {
+  return useBaseFlag(FeatureFlag.fiatOnramp)
+}

src/pages/App.tsx

@@ -111,7 +111,7 @@ const HeaderWrapper = styled.div<{ transparent?: boolean }>`
   justify-content: space-between;
   position: fixed;
   top: 0;
-  z-index: ${Z_INDEX.sticky};
+  z-index: ${Z_INDEX.dropdown};
 `
 
 const Marginer = styled.div`

src/state/application/hooks.ts

 import { DEFAULT_TXN_DISMISS_MS } from 'constants/misc'
-import { useCallback, useMemo } from 'react'
+import { useCallback, useEffect, useMemo, useState } from 'react'
 import { useAppDispatch, useAppSelector } from 'state/hooks'
 
 import { AppState } from '../index'
-import { addPopup, ApplicationModal, PopupContent, removePopup, setOpenModal } from './reducer'
+import {
+  addPopup,
+  ApplicationModal,
+  PopupContent,
+  removePopup,
+  setFiatOnrampAvailability,
+  setOpenModal,
+} from './reducer'
 
 export function useModalIsOpen(modal: ApplicationModal): boolean {
   const openModal = useAppSelector((state: AppState) => state.application.openModal)
   return openModal === modal
 }
 
+/** @ref https://dashboard.moonpay.com/api_reference/client_side_api#ip_addresses */
+interface MoonpayIPAddressesResponse {
+  alpha3?: string
+  isAllowed?: boolean
+  isBuyAllowed?: boolean
+  isSellAllowed?: boolean
+}
+
+async function getMoonpayAvailability(): Promise<boolean> {
+  const moonpayPublishableKey = process.env.REACT_APP_MOONPAY_PUBLISHABLE_KEY
+  if (!moonpayPublishableKey) {
+    throw new Error('Must provide a publishable key for moonpay.')
+  }
+  const moonpayApiURI = process.env.REACT_APP_MOONPAY_API
+  if (!moonpayApiURI) {
+    throw new Error('Must provide an api endpoint for moonpay.')
+  }
+  const res = await fetch(`${moonpayApiURI}/v4/ip_address?apiKey=${moonpayPublishableKey}`)
+  const data = await (res.json() as Promise<MoonpayIPAddressesResponse>)
+  return data.isBuyAllowed ?? false
+}
+
+export function useFiatOnrampAvailability(shouldCheck: boolean, callback?: () => void) {
+  const dispatch = useAppDispatch()
+  const { available, availabilityChecked } = useAppSelector((state: AppState) => state.application.fiatOnramp)
+  const [error, setError] = useState<string | null>(null)
+  const [loading, setLoading] = useState(false)
+
+  useEffect(() => {
+    async function checkAvailability() {
+      setError(null)
+      setLoading(true)
+      try {
+        const result = await getMoonpayAvailability()
+        if (stale) return
+        dispatch(setFiatOnrampAvailability(result))
+        if (result && callback) {
+          callback()
+        }
+      } catch (e) {
+        console.error('Error checking onramp availability', e.toString())
+        if (stale) return
+        setError('Error, try again later.')
+        dispatch(setFiatOnrampAvailability(false))
+      } finally {
+        if (stale) return
+        setLoading(false)
+      }
+    }
+
+    if (!availabilityChecked && shouldCheck) {
+      checkAvailability()
+    }
+
+    let stale = false
+    return () => {
+      stale = true
+    }
+  }, [availabilityChecked, callback, dispatch, shouldCheck])
+
+  return { available, availabilityChecked, loading, error }
+}
+
 export function useToggleModal(modal: ApplicationModal): () => void {
   const isOpen = useModalIsOpen(modal)
   const dispatch = useAppDispatch()
@@ -21,6 +91,11 @@ export function useCloseModal(_modal: ApplicationModal): () => void {
   return useCallback(() => dispatch(setOpenModal(null)), [dispatch])
 }
 
+export function useOpenModal(modal: ApplicationModal): () => void {
+  const dispatch = useAppDispatch()
+  return useCallback(() => dispatch(setOpenModal(modal)), [dispatch, modal])
+}
+
 export function useToggleWalletModal(): () => void {
   return useToggleModal(ApplicationModal.WALLET)
 }

src/state/application/reducer.ts

@@ -15,36 +15,39 @@ export type PopupContent =
 
 export enum ApplicationModal {
   ADDRESS_CLAIM,
-  UNISWAP_NFT_AIRDROP_CLAIM,
   BLOCKED_ACCOUNT,
-  DELEGATE,
   CLAIM_POPUP,
+  DELEGATE,
+  EXECUTE,
+  FEATURE_FLAGS,
+  FIAT_ONRAMP,
   MENU,
+  NETWORK_FILTER,
   NETWORK_SELECTOR,
   POOL_OVERVIEW_OPTIONS,
   PRIVACY_POLICY,
+  QUEUE,
   SELF_CLAIM,
   SETTINGS,
+  SHARE,
+  TIME_SELECTOR,
   VOTE,
   WALLET,
   WALLET_DROPDOWN,
-  QUEUE,
-  EXECUTE,
-  TIME_SELECTOR,
-  SHARE,
-  NETWORK_FILTER,
-  FEATURE_FLAGS,
+  UNISWAP_NFT_AIRDROP_CLAIM,
 }
 
 type PopupList = Array<{ key: string; show: boolean; content: PopupContent; removeAfterMs: number | null }>
 
 export interface ApplicationState {
   readonly chainId: number | null
+  readonly fiatOnramp: { available: boolean; availabilityChecked: boolean }
   readonly openModal: ApplicationModal | null
   readonly popupList: PopupList
 }
 
 const initialState: ApplicationState = {
+  fiatOnramp: { available: false, availabilityChecked: false },
   chainId: null,
   openModal: null,
   popupList: [],
@@ -54,6 +57,9 @@ const applicationSlice = createSlice({
   name: 'application',
   initialState,
   reducers: {
+    setFiatOnrampAvailability(state, { payload: available }) {
+      state.fiatOnramp = { available, availabilityChecked: true }
+    },
     updateChainId(state, action) {
       const { chainId } = action.payload
       state.chainId = chainId
@@ -81,5 +87,6 @@ const applicationSlice = createSlice({
   },
 })
 
-export const { updateChainId, setOpenModal, addPopup, removePopup } = applicationSlice.actions
+export const { updateChainId, setFiatOnrampAvailability, setOpenModal, addPopup, removePopup } =
+  applicationSlice.actions
 export default applicationSlice.reducer

src/state/application/updater.ts

 import { useWeb3React } from '@web3-react/core'
 import useDebounce from 'hooks/useDebounce'
 import useIsWindowVisible from 'hooks/useIsWindowVisible'
-import { useEffect, useState } from 'react'
+import { useEffect, useRef, useState } from 'react'
 import { useAppDispatch } from 'state/hooks'
 import { supportedChainId } from 'utils/supportedChainId'
 
-import { updateChainId } from './reducer'
+import { useCloseModal } from './hooks'
+import { ApplicationModal, updateChainId } from './reducer'
 
 export default function Updater(): null {
-  const { chainId, provider } = useWeb3React()
+  const { account, chainId, provider } = useWeb3React()
   const dispatch = useAppDispatch()
   const windowVisible = useIsWindowVisible()
 
   const [activeChainId, setActiveChainId] = useState(chainId)
 
+  const closeModal = useCloseModal(ApplicationModal.WALLET_DROPDOWN)
+  const previousAccountValue = useRef(account)
+  useEffect(() => {
+    if (account && account !== previousAccountValue.current) {
+      previousAccountValue.current = account
+      closeModal()
+    }
+  }, [account, closeModal])
+
   useEffect(() => {
     if (provider && chainId && windowVisible) {
       setActiveChainId(chainId)

src/state/user/hooks.tsx

@@ -4,6 +4,8 @@ import { useWeb3React } from '@web3-react/core'
 import { L2_CHAIN_IDS } from 'constants/chains'
 import { SupportedLocale } from 'constants/locales'
 import { L2_DEADLINE_FROM_NOW } from 'constants/misc'
+import { BaseVariant } from 'featureFlags'
+import { useFiatOnrampFlag } from 'featureFlags/flags/fiatOnramp'
 import JSBI from 'jsbi'
 import { useCallback, useMemo } from 'react'
 import { shallowEqual } from 'react-redux'
@@ -17,6 +19,7 @@ import { AppState } from '../index'
 import {
   addSerializedPair,
   addSerializedToken,
+  updateFiatOnrampAcknowledgments,
   updateHideClosedPositions,
   updateHideNFTWelcomeModal,
   updateShowNftPromoBanner,
@@ -105,9 +108,29 @@ export function useExpertModeManager(): [boolean, () => void] {
   return [expertMode, toggleSetExpertMode]
 }
 
+interface FiatOnrampAcknowledgements {
+  renderCount: number
+  system: boolean
+  user: boolean
+}
+export function useFiatOnrampAck(): [
+  FiatOnrampAcknowledgements,
+  (acknowledgements: Partial<FiatOnrampAcknowledgements>) => void
+] {
+  const dispatch = useAppDispatch()
+  const fiatOnrampAcknowledgments = useAppSelector((state) => state.user.fiatOnrampAcknowledgments)
+  const setAcknowledgements = useCallback(
+    (acks: Partial<FiatOnrampAcknowledgements>) => {
+      dispatch(updateFiatOnrampAcknowledgments(acks))
+    },
+    [dispatch]
+  )
+  return [fiatOnrampAcknowledgments, setAcknowledgements]
+}
 export function useHideNFTWelcomeModal(): [boolean | undefined, () => void] {
   const dispatch = useAppDispatch()
-  const hideNFTWelcomeModal = useAppSelector((state) => state.user.hideNFTWelcomeModal)
+  const fiatOnrampFlagEnabled = useFiatOnrampFlag() === BaseVariant.Enabled
+  const hideNFTWelcomeModal = useAppSelector((state) => state.user.hideNFTWelcomeModal) || fiatOnrampFlagEnabled
   const hideModal = useCallback(() => {
     dispatch(updateHideNFTWelcomeModal({ hideNFTWelcomeModal: true }))
   }, [dispatch])

src/state/user/reducer.ts

@@ -9,6 +9,8 @@ import { SerializedPair, SerializedToken } from './types'
 const currentTimestamp = () => new Date().getTime()
 
 export interface UserState {
+  fiatOnrampAcknowledgments: { renderCount: number; system: boolean; user: boolean }
+
   selectedWallet?: ConnectionType
 
   // the timestamp of the last updateVersion action
@@ -61,6 +63,7 @@ function pairKey(token0Address: string, token1Address: string) {
 }
 
 export const initialState: UserState = {
+  fiatOnrampAcknowledgments: { renderCount: 0, system: false, user: false },
   selectedWallet: undefined,
   matchesDarkMode: false,
   userDarkMode: null,
@@ -84,6 +87,12 @@ const userSlice = createSlice({
   name: 'user',
   initialState,
   reducers: {
+    updateFiatOnrampAcknowledgments(
+      state,
+      { payload }: { payload: Partial<{ renderCount: number; user: boolean; system: boolean }> }
+    ) {
+      state.fiatOnrampAcknowledgments = { ...state.fiatOnrampAcknowledgments, ...payload }
+    },
     updateSelectedWallet(state, { payload: { wallet } }) {
       state.selectedWallet = wallet
     },
@@ -181,9 +190,10 @@ const userSlice = createSlice({
 })
 
 export const {
-  updateSelectedWallet,
   addSerializedPair,
   addSerializedToken,
+  updateFiatOnrampAcknowledgments,
+  updateSelectedWallet,
   updateHideClosedPositions,
   updateMatchesDarkMode,
   updateUserClientSideRouter,