Add DFX fiat ramp provider

CHANGELOG.md

@@ -7,6 +7,7 @@
 - added: Logbox disable option to env.json
 - added: Reverse-resolve recipient addresses to ENS / Unstoppable Domains / ZNS names in the send flow, address modal, and transaction history.
 - added: Warning confirmation when sending a zero amount on EVM chains, since the transaction still spends gas.
+- added: DFX (app.dfx.swiss) as a SEPA fiat buy/sell ramp provider.
 - added: Remote enable/disable of gift card providers via the info server's giftCardInfo config, supporting whole-provider disabling for Phaze and Bitrefill and per-brand disabling for Phaze.
 - added: Exchange deep links (`edge://exchange/buy|sell|swap`) that open the flow with the asset pre-selected
 - added: Promo attribution for buy, sell and swap flows opened from deep links and promo cards

src/constants/plugins/GuiPlugins.ts

@@ -94,6 +94,13 @@ export const guiPlugins: Record<string, GuiPlugin> = {
     displayName: 'Bits of Gold',
     permissions: ['camera']
   },
+  dfx: {
+    pluginId: 'dfx',
+    storeId: 'dfx',
+    baseUri: 'https://app.dfx.swiss',
+    displayName: 'DFX',
+    permissions: ['camera']
+  },
   creditcard: {
     pluginId: 'amountquote',
     storeId: '',

src/docs/ramps-deeplink-provider-priority.md

@@ -373,7 +373,7 @@ The ordering and the badge are each simple rules, but their product across the i
 
 Both blocks below are cards inside the `promoCards2` array of the [info server](#info-server) rollup document in the `info_data` CouchDB database. `promoCards2` is a healing array, so a card that fails the cleaner is dropped silently and the rest still load. `background` is required on every card, including the silent one.
 
-[Ramp plugin](#ramp-plugin) ids usable in `preferProviders`: `banxa`, `bitsofgold`, `infinite`, `libertyx`, `moonpay`, `paybis`, `revolut`, `simplex`.
+[Ramp plugin](#ramp-plugin) ids usable in `preferProviders`: `banxa`, `bitsofgold`, `dfx`, `infinite`, `libertyx`, `moonpay`, `paybis`, `revolut`, `simplex`.
 
 ### 6.1 Visible card with a deep link call-to-action
 

src/plugins/ramps/allRampPlugins.ts

@@ -1,5 +1,6 @@
 import { banxaRampPlugin } from './banxa/banxaRampPlugin'
 import { bitsofgoldRampPlugin } from './bitsofgold/bitsofgoldRampPlugin'
+import { dfxRampPlugin } from './dfx/dfxRampPlugin'
 import { infiniteRampPlugin } from './infinite/infiniteRampPlugin'
 import { libertyxRampPlugin } from './libertyx/libertyxRampPlugin'
 import { moonpayRampPlugin } from './moonpay/moonpayRampPlugin'
@@ -11,6 +12,7 @@ import { simplexRampPlugin } from './simplex/simplexRampPlugin'
 export const pluginFactories: Record<string, RampPluginFactory> = {
   banxa: banxaRampPlugin,
   bitsofgold: bitsofgoldRampPlugin,
+  dfx: dfxRampPlugin,
   infinite: infiniteRampPlugin,
   libertyx: libertyxRampPlugin,
   moonpay: moonpayRampPlugin,

src/plugins/ramps/dfx/dfxRampPlugin.ts

@@ -0,0 +1,89 @@
+import { guiPlugins } from '../../../constants/plugins/GuiPlugins'
+import type { RampPluginFactory, SettlementRange } from '../rampPluginTypes'
+import {
+  createExternalRampPlugin,
+  type DirectionSupportData
+} from '../utils/createExternalRampPlugin'
+import { asInitOptions } from './dfxRampTypes'
+
+// DFX settles SEPA bank transfers within a few business days.
+const SETTLEMENT_ONE_TO_THREE_DAYS: SettlementRange = {
+  min: { value: 1, unit: 'days' },
+  max: { value: 3, unit: 'days' }
+}
+
+// EEA countries plus Switzerland where DFX accepts bank transfers. Bulgaria
+// is left out: DFX's country list (api.dfx.swiss/v1/country) disallows IBAN,
+// bank and KYC there.
+const DFX_COUNTRIES = [
+  'AT',
+  'BE',
+  'CH',
+  'CY',
+  'CZ',
+  'DE',
+  'DK',
+  'EE',
+  'ES',
+  'FI',
+  'FR',
+  'GR',
+  'HR',
+  'HU',
+  'IE',
+  'IS',
+  'IT',
+  'LI',
+  'LT',
+  'LU',
+  'LV',
+  'MT',
+  'NL',
+  'NO',
+  'PL',
+  'PT',
+  'RO',
+  'SE',
+  'SI',
+  'SK'
+]
+
+const DFX_FIAT_CURRENCY_CODES = ['EUR', 'CHF']
+
+const DFX_CRYPTO_ASSETS = [
+  { pluginId: 'bitcoin', tokenId: null },
+  { pluginId: 'ethereum', tokenId: null },
+  { pluginId: 'arbitrum', tokenId: null },
+  { pluginId: 'optimism', tokenId: null },
+  { pluginId: 'polygon', tokenId: null },
+  { pluginId: 'base', tokenId: null },
+  { pluginId: 'binancesmartchain', tokenId: null },
+  { pluginId: 'solana', tokenId: null },
+  { pluginId: 'monero', tokenId: null }
+]
+
+export const dfxRampPlugin: RampPluginFactory = config => {
+  const initOptions = asInitOptions(config.initOptions)
+  const support: Omit<DirectionSupportData, 'deepPath'> = {
+    paymentTypes: ['sepa'],
+    countries: DFX_COUNTRIES,
+    fiatCurrencyCodes: DFX_FIAT_CURRENCY_CODES,
+    cryptoAssets: DFX_CRYPTO_ASSETS,
+    settlementRange: SETTLEMENT_ONE_TO_THREE_DAYS,
+    deepQuery: {
+      wallet: initOptions.wallet,
+      lang: 'en'
+    }
+  }
+
+  return createExternalRampPlugin(
+    'dfx',
+    {
+      guiPlugin: guiPlugins.dfx,
+      partnerIcon: initOptions.partnerIcon,
+      buy: { ...support, deepPath: '/buy' },
+      sell: { ...support, deepPath: '/sell' }
+    },
+    config
+  )
+}

src/plugins/ramps/dfx/dfxRampTypes.ts

@@ -0,0 +1,13 @@
+import { asObject, asOptional, asString } from 'cleaners'
+
+export interface InitOptions {
+  readonly partnerIcon: string
+  // Partner/wallet identifier sent to the DFX widget. Override per build so
+  // white-label apps do not identify as Edge.
+  readonly wallet: string
+}
+
+export const asInitOptions = asObject<InitOptions>({
+  partnerIcon: asOptional(asString, `https://content.edge.app/dfx-logo.png`),
+  wallet: asOptional(asString, 'Edge')
+}).withRest