Implement breez lightning address

app/components/set-default-account-modal/set-default-account-modal.tsx

@@ -10,7 +10,10 @@ import { useBreez } from "@app/hooks"
 import { useApolloClient } from "@apollo/client"
 import { useI18nContext } from "@app/i18n/i18n-react"
 import { useNavigation } from "@react-navigation/native"
-import { useSetDefaultAccountModalQuery } from "@app/graphql/generated"
+import {
+  useAccountUpdateDefaultWalletIdMutation,
+  useSetDefaultAccountModalQuery,
+} from "@app/graphql/generated"
 import { usePersistentStateContext } from "@app/store/persistent-state"
 
 // utils
@@ -34,17 +37,23 @@ export const SetDefaultAccountModal = ({ isVisible, toggleModal }: Props) => {
   const { LL } = useI18nContext()
   const { btcWallet } = useBreez()
   const { updateState } = usePersistentStateContext()
+  const [updateDefaultWalletId] = useAccountUpdateDefaultWalletIdMutation()
 
   const { data } = useSetDefaultAccountModalQuery({
     fetchPolicy: "cache-only",
   })
   const usdWallet = getUsdWallet(data?.me?.defaultAccount?.wallets)
 
-  const onPressHandler = (currency: string) => {
+  const onPressHandler = async (currency: string) => {
     let defaultWallet = usdWallet
     if (currency === "BTC") {
       defaultWallet = btcWallet
     }
+    if (defaultWallet?.id) {
+      await updateDefaultWalletId({
+        variables: { input: { walletId: defaultWallet.id } },
+      })
+    }
     updateState((state: any) => {
       if (state)
         return {

app/contexts/BreezContext.tsx

@@ -1,15 +1,26 @@
 import React, { createContext, useEffect, useRef, useState } from "react"
-import { WalletCurrency } from "@app/graphql/generated"
+import { useUpdateExternalWalletMutation, WalletCurrency } from "@app/graphql/generated"
 import { usePersistentStateContext } from "@app/store/persistent-state"
 import { Alert, Platform } from "react-native"
 import { v4 as uuidv4 } from "uuid"
-import { initializeBreezSDK, getInfo, handleSparkMigration } from "@app/utils/breez-sdk"
+import {
+  initializeBreezSDK,
+  getInfo,
+  handleSparkMigration,
+  registerLightningAddress,
+  getLightningAddress,
+  checkLightningAddressAvailable,
+} from "@app/utils/breez-sdk"
+import { useAppConfig } from "@app/hooks/use-app-config"
+import { useAddressScreenQuery } from "@app/graphql/generated"
+import { useIsAuthed } from "@app/graphql/is-authed-context"
 import SparkMigrationModal from "@app/components/spark-migration-modal"
 
 type BtcWallet = {
   id: string
   walletCurrency: WalletCurrency
   balance: number
+  isExternal: boolean
 }
 
 interface BreezInterface {
@@ -25,6 +36,7 @@ export const BreezContext = createContext<BreezInterface>({
     id: "",
     walletCurrency: "BTC",
     balance: 0,
+    isExternal: true,
   },
 })
 
@@ -34,11 +46,20 @@ type Props = {
 
 export const BreezProvider = ({ children }: Props) => {
   const { persistentState, updateState } = usePersistentStateContext()
+  const { appConfig } = useAppConfig()
+  const isAuthed = useIsAuthed()
+  const { data: meData } = useAddressScreenQuery({
+    fetchPolicy: "cache-first",
+    skip: !isAuthed,
+  })
+  const [updateExternalWallet] = useUpdateExternalWalletMutation()
+
   const [loading, setLoading] = useState(false)
   const [btcWallet, setBtcWallet] = useState<BtcWallet>({
     id: "",
     walletCurrency: "BTC",
     balance: persistentState.breezBalance || 0,
+    isExternal: true,
   })
   const initializingRef = useRef(false)
   const updatingBalanceRef = useRef(false)
@@ -85,6 +106,7 @@ export const BreezProvider = ({ children }: Props) => {
           id: "",
           walletCurrency: "BTC",
           balance: 0,
+          isExternal: true,
         })
       }
     }
@@ -94,17 +116,16 @@ export const BreezProvider = ({ children }: Props) => {
     if (updatingBalanceRef.current) return
     updatingBalanceRef.current = true
     try {
-      const balanceSats = await getInfo()
-      setBtcWallet({
-        id: uuidv4(),
-        walletCurrency: WalletCurrency.Btc,
-        balance: balanceSats,
-      })
+      const walletInfo = await getInfo()
+      setBtcWallet((prev) => ({
+        ...prev,
+        balance: Number(walletInfo.balanceSats),
+      }))
       updateState((state: any) => {
         if (state)
           return {
             ...state,
-            breezBalance: balanceSats,
+            breezBalance: Number(walletInfo.balanceSats),
           }
         return undefined
       })
@@ -113,6 +134,49 @@ export const BreezProvider = ({ children }: Props) => {
     }
   }
 
+  const updateExternalWalletLnurlp = async (lnurlp: string) => {
+    const externalWalletRes = await updateExternalWallet({
+      variables: { input: { lnurlp } },
+    })
+    console.log("Update External Wallet Response: ", externalWalletRes)
+    const walletId = externalWalletRes.data?.updateExternalWallet.walletId
+    if (walletId) {
+      setBtcWallet((prev) => ({
+        ...prev,
+        id: walletId,
+      }))
+    }
+  }
+
+  const ensureLightningAddress = async () => {
+    const username = meData?.me?.username
+    if (!username) return
+
+    try {
+      const existing = await getLightningAddress()
+      console.log("BREEZ LIGHTNING ADDRESS: ", existing)
+
+      if (existing) {
+        updateExternalWalletLnurlp(existing.lnurl.bech32)
+        return
+      }
+
+      // Register with username as the Lightning address
+      const lightningAddress = username + uuidv4()
+      const res = await registerLightningAddress(
+        lightningAddress,
+        `Pay to ${username}@${appConfig.galoyInstance.lnAddressHostname}`,
+      )
+      console.log("BREEZ LIGHTNING ADDRESS RES: ", res)
+
+      if (res) {
+        updateExternalWalletLnurlp(res.lnurl.bech32)
+      }
+    } catch (err) {
+      console.warn("Failed to register Lightning address:", err)
+    }
+  }
+
   const getBreezInfo = async () => {
     if (initializingRef.current) return
     initializingRef.current = true
@@ -122,6 +186,9 @@ export const BreezProvider = ({ children }: Props) => {
       await updateBalance()
       setLoading(false)
 
+      // Register Lightning address
+      await ensureLightningAddress()
+
       // Trigger migration after Spark SDK is ready
       if (!persistentState.sparkMigrationCompleted) {
         await onMigrate()

app/graphql/cache.ts

@@ -9,6 +9,7 @@ gql`
       id
       balance
       walletCurrency
+      isExternal
     }
   }
 

app/graphql/front-end-mutations.ts

@@ -212,4 +212,14 @@ gql`
       uploadUrl
     }
   }
+
+  mutation UpdateExternalWallet($input: UpdateExternalWalletInput!) {
+    updateExternalWallet(input: $input) {
+      errors {
+        code
+        message
+      }
+      walletId
+    }
+  }
 `

app/graphql/front-end-queries.ts

@@ -37,6 +37,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -83,6 +84,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -97,6 +99,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -111,6 +114,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -135,6 +139,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -150,6 +155,7 @@ gql`
         id
         wallets {
           id
+          isExternal
         }
       }
       contacts {
@@ -178,6 +184,7 @@ gql`
           id
           walletCurrency
           balance
+          isExternal
         }
       }
     }
@@ -224,6 +231,7 @@ gql`
           id
           balance
           walletCurrency
+          isExternal
         }
       }
     }
@@ -245,6 +253,7 @@ gql`
         id
         wallets {
           id
+          isExternal
         }
       }
       contacts {