feat(onramp): migrate Phantom integration from manual deeplinks to SDK

apps/flipcash/app/build.gradle.kts

@@ -153,6 +153,9 @@ dependencies {
     implementation(project(":apps:flipcash:shared:notifications"))
     implementation(project(":apps:flipcash:shared:onramp:coinbase"))
     implementation(project(":apps:flipcash:shared:onramp:deeplinks"))
+    implementation(libs.phantom.connect) {
+        exclude(group = "com.ionspin.kotlin", module = "multiplatform-crypto-libsodium-bindings-android-debug")
+    }
     implementation(project(":apps:flipcash:shared:payments"))
     implementation(project(":apps:flipcash:shared:permissions"))
     implementation(project(":apps:flipcash:shared:phone"))

apps/flipcash/app/src/main/AndroidManifest.xml

@@ -28,16 +28,6 @@
             <action android:name="android.intent.action.VIEW" />
             <data android:host="phantom.app" />
         </intent>
-
-        <intent>
-            <action android:name="android.intent.action.VIEW" />
-            <data android:host="backpack.app" />
-        </intent>
-
-        <intent>
-            <action android:name="android.intent.action.VIEW" />
-            <data android:host="solflare.com" />
-        </intent>
     </queries>
 
     <application
@@ -82,8 +72,6 @@
                 <data android:pathPattern="/login.*" />
                 <data android:pathPattern="/token.*" />
                 <data android:pathPattern="/verify.*" />
-                <data android:pathPattern="/external/.*/connected" />
-                <data android:pathPattern="/external/.*/signed" />
             </intent-filter>
 
             <!-- send.flipcash.com App Links -->
@@ -160,29 +148,6 @@
                     android:scheme="https" />
             </intent-filter>
 
-            <intent-filter android:autoVerify="true">
-                <action android:name="android.intent.action.VIEW" />
-
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE" />
-
-                <data
-                    android:host="app.flipcash.com"
-                    android:pathPattern="/external/.*/connected"
-                    android:scheme="https" />
-            </intent-filter>
-
-            <intent-filter android:autoVerify="true">
-                <action android:name="android.intent.action.VIEW" />
-
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE" />
-
-                <data
-                    android:host="app.flipcash.com"
-                    android:pathPattern="/external/.*/signed"
-                    android:scheme="https" />
-            </intent-filter>
 
             <intent-filter android:autoVerify="true">
                 <action android:name="android.intent.action.VIEW" />
@@ -232,6 +197,19 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name="dev.bmcreations.phantom.connect.wallet.PhantomWalletCallbackActivity"
+            android:exported="true"
+            android:launchMode="singleTask"
+            android:theme="@android:style/Theme.Translucent.NoTitleBar">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" android:host="app.flipcash.com" android:path="/phantom-wallet-callback" />
+            </intent-filter>
+        </activity>
+
         <!--
              Prompt Google Play services to install the backported photo picker module
              https://developer.android.com/training/data-storage/shared/photopicker#device-availability

apps/flipcash/app/src/main/kotlin/com/flipcash/app/FlipcashApp.kt

@@ -15,6 +15,7 @@ import com.flipcash.app.auth.AuthManager
 import com.flipcash.app.currency.PreferredCurrencyController
 import com.getcode.opencode.repositories.EventRepository
 import com.getcode.utils.trace
+import dev.bmcreations.phantom.connect.PhantomSdk
 import dagger.hilt.android.HiltAndroidApp
 import javax.inject.Inject
 
@@ -41,7 +42,7 @@ class FlipcashApp : Application(), Configuration.Provider, SingletonImageLoader.
 
     override fun onCreate() {
         super.onCreate()
-
+        PhantomSdk.init(this)
         authManager.init()
 
         AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)

apps/flipcash/app/src/main/kotlin/com/flipcash/app/MainActivity.kt

@@ -19,8 +19,6 @@ import com.flipcash.app.billing.BillingClient
 import com.flipcash.app.core.LocalUserManager
 import com.flipcash.app.core.verification.email.EmailCodeChannel
 import com.flipcash.app.core.verification.email.LocalEmailCodeChannel
-import com.flipcash.app.onramp.ExternalWalletOnRampController
-import com.flipcash.app.onramp.LocalExternalWalletOnRampController
 import com.flipcash.app.onramp.LocalCoinbaseOnRampController
 import com.flipcash.app.onramp.CoinbaseOnRampController
 import com.flipcash.app.featureflags.FeatureFlagController
@@ -117,9 +115,6 @@ class MainActivity : FragmentActivity() {
     @Inject
     lateinit var emailCodeChannel: EmailCodeChannel
 
-    @Inject
-    lateinit var externalWalletOnRampController: ExternalWalletOnRampController
-
     @Inject
     lateinit var coinbaseOnRampController: CoinbaseOnRampController
 
@@ -146,7 +141,6 @@ class MainActivity : FragmentActivity() {
                 LocalBillPlaygroundController provides billPlaygroundController,
                 LocalAppUpdater provides appUpdater,
                 LocalEmailCodeChannel provides emailCodeChannel,
-                LocalExternalWalletOnRampController provides externalWalletOnRampController,
                 LocalCoinbaseOnRampController provides coinbaseOnRampController,
                 LocalUiTesting provides intent.getBooleanExtra(UI_TEST, false),
             ) {

apps/flipcash/app/src/main/kotlin/com/flipcash/app/internal/ui/App.kt

@@ -46,8 +46,6 @@ import com.flipcash.app.internal.ui.navigation.appEntryProvider
 import com.flipcash.app.internal.ui.navigation.decorators.rememberNavBlockingOverlayEntryDecorator
 import com.flipcash.app.internal.ui.navigation.decorators.rememberNavMessagingEntryDecorator
 import com.flipcash.app.onramp.CoinbaseOnRampHandler
-import com.flipcash.app.onramp.ExternalWalletOnRampHandler
-import com.flipcash.app.onramp.LocalExternalWalletOnRampController
 import com.flipcash.app.router.LocalRouter
 import com.flipcash.app.session.LocalSessionController
 import com.flipcash.app.theme.FlipcashTheme
@@ -149,7 +147,6 @@ internal fun App(
                                 LocalScrimController provides scrimController,
                                 LocalSharedTransitionScope provides this,
                             ) {
-                                ExternalWalletOnRampHandler(navigator = codeNavigator) {
                                     CoinbaseOnRampHandler {
                                         AppNavHost(
                                             navigator = codeNavigator,
@@ -235,10 +232,8 @@ internal fun App(
 
                                         ScrimOverlay(scrimController)
                                     }
-                                }
 
                                 val emailCodeChannel = LocalEmailCodeChannel.current
-                                val externalWalletController = LocalExternalWalletOnRampController.current
                                 LaunchedEffect(deepLink) {
                                     val link = deepLink ?: return@LaunchedEffect
 
@@ -267,10 +262,6 @@ internal fun App(
                                             }
                                         }
 
-                                        is DeeplinkAction.ExternalWallet -> externalWalletController.handleWalletDeeplink(
-                                            action.type
-                                        )
-
                                         is DeeplinkAction.Login -> viewModel.handleLoginEntropy(
                                             action.entropy,
                                             onSwitchAccount = {

apps/flipcash/app/src/main/kotlin/com/flipcash/app/internal/ui/navigation/AppScreenContent.kt

@@ -111,7 +111,7 @@ fun appEntryProvider(
         SwapFlowScreen(route = key, resultStateRegistry = resultStateRegistry)
     }
     annotatedEntry<AppRoute.Token.TxProcessing> { key ->
-        TokenTxProcessingScreen(key.swapId, key.swapPurpose, key.amount, key.awaitExternalWallet, key.isFundingShortfall)
+        TokenTxProcessingScreen(key.swapId, key.swapPurpose, key.amount, key.isFundingShortfall)
     }
     annotatedEntry<AppRoute.Token.Discovery> { TokenDiscoveryScreen() }
     annotatedEntry<AppRoute.Token.CurrencyCreator> { key ->

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/AppRoute.kt

@@ -153,7 +153,6 @@ sealed interface AppRoute : NavKey, Parcelable {
             val swapId: SwapId,
             val swapPurpose: SwapPurpose? = null,
             val amount: VerifiedFiat? = null,
-            val awaitExternalWallet: Boolean = false,
             val isFundingShortfall: Boolean = false,
         ) : Token, NonDismissableRoute, NonDraggableRoute
 

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/navigation/DeeplinkAction.kt

@@ -2,7 +2,6 @@ package com.flipcash.app.core.navigation
 
 sealed interface DeeplinkAction {
     data class Navigate(val routes: List<com.flipcash.app.core.AppRoute>) : DeeplinkAction
-    data class ExternalWallet(val type: DeeplinkType) : DeeplinkAction
     data class Login(val entropy: String) : DeeplinkAction
     data class OpenCashLink(val entropy: String) : DeeplinkAction
     data object None : DeeplinkAction

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/navigation/DeeplinkType.kt

@@ -2,13 +2,7 @@ package com.flipcash.app.core.navigation
 
 import android.net.Uri
 import android.os.Parcelable
-import com.flipcash.app.core.onramp.deeplinks.WalletDeeplinkConnectionResult
-import com.flipcash.app.core.onramp.deeplinks.ExternalWalletDeeplinkError
-import com.flipcash.app.core.onramp.deeplinks.OnRampDeeplinkOrigin
-import com.flipcash.app.core.onramp.deeplinks.WalletDeeplinkSigningResult
-import com.getcode.ed25519.Ed25519
 import com.getcode.solana.keys.Mint
-import com.getcode.vendor.Base58
 import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.Serializable
 
@@ -21,24 +15,6 @@ sealed interface DeeplinkType: Parcelable {
 
     @Serializable data class TokenInfo(val mint: Mint): DeeplinkType, Navigatable
 
-    sealed interface ExternalWalletStep {
-        val origin: OnRampDeeplinkOrigin
-    }
-
-    @Serializable
-    data class ExternalWalletConnection(
-        override val origin: OnRampDeeplinkOrigin,
-        val result: WalletDeeplinkConnectionResult?,
-        val error: ExternalWalletDeeplinkError? = null
-    ): DeeplinkType, ExternalWalletStep, Navigatable
-
-    @Serializable
-    data class ExternalWalletSignedTransaction(
-        override val origin: OnRampDeeplinkOrigin,
-        val result: WalletDeeplinkSigningResult?,
-        val error: ExternalWalletDeeplinkError? = null
-    ): DeeplinkType, ExternalWalletStep, Navigatable
-
     @Serializable
     data class EmailVerification(
         val email: String,
@@ -88,4 +64,4 @@ sealed interface Key {
 }
 
 private operator fun Regex.contains(text: String?): Boolean =
-    text?.let { this.matches(it) } ?: false
+    text?.let { this.matches(it) } ?: false

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/onramp/deeplinks/WalletDeeplinkConnectionResult.kt

@@ -1,18 +1,7 @@
 package com.flipcash.app.core.onramp.deeplinks
 
 import android.os.Parcelable
-import com.flipcash.app.core.AppRoute
-import com.getcode.ed25519.Ed25519
-import com.getcode.opencode.model.core.ID
-import com.getcode.opencode.utils.base64
-import com.getcode.opencode.utils.base64UrlSafe
-import com.getcode.solana.keys.Mint
 import com.getcode.solana.keys.PublicKey
-import com.getcode.solana.keys.base58
-import com.getcode.utils.base58
-import com.getcode.utils.decodeBase58
-import com.getcode.utils.decodeBase64
-import com.getcode.utils.serializer.ByteListAsBase64Serializer
 import kotlinx.parcelize.Parcelize
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
@@ -31,101 +20,3 @@ data class ExternallySignedTransaction(
     @SerialName("transaction")
     val serializedTransaction: String,
 ): Parcelable
-
-@Serializable
-@Parcelize
-sealed class OnRampDeeplinkOrigin: Parcelable {
-    @Serializable @Parcelize
-    data object Menu : OnRampDeeplinkOrigin()
-
-    @Serializable @Parcelize
-    data class Give(val tokenAddress: Mint?) : OnRampDeeplinkOrigin()
-
-    @Serializable @Parcelize
-    data object Wallet: OnRampDeeplinkOrigin()
-
-    @Serializable @Parcelize
-    data class TokenInfo(val mint: Mint): OnRampDeeplinkOrigin()
-
-    @Serializable @Parcelize
-    data object Reserves: OnRampDeeplinkOrigin()
-
-    @Serializable @Parcelize
-    data object CurrencyCreator: OnRampDeeplinkOrigin()
-
-
-    fun forUri(): String {
-        return when(this) {
-            Menu -> "menu"
-            is Give -> "give-${tokenAddress?.base58()?.base64UrlSafe}"
-            Wallet -> "wallet"
-            is TokenInfo -> "token-${mint.base58().base64UrlSafe}"
-            Reserves -> "reserves"
-            CurrencyCreator -> "currency-creator"
-        }.lowercase()
-    }
-
-    companion object Companion {
-        fun fromRoute(route: AppRoute?): OnRampDeeplinkOrigin? {
-            return when (route) {
-                is AppRoute.Sheets.Menu -> Menu
-                is AppRoute.Sheets.Give -> Give(route.mint)
-                is AppRoute.Sheets.Wallet -> Wallet
-                is AppRoute.Token.Info -> {
-                    if (route.mint == Mint.usdf) Reserves else TokenInfo(route.mint)
-                }
-                is AppRoute.Token.CurrencyCreator -> CurrencyCreator
-
-                else -> null
-            }
-        }
-
-        fun fromString(value: String?): OnRampDeeplinkOrigin? {
-            return when {
-                value == "menu" -> Menu
-                value?.startsWith("give-") == true -> {
-                    val tokenAddress = value.removePrefix("give-").decodeBase64().base58
-                    val mint = runCatching {
-                        Mint(tokenAddress)
-                    }.getOrNull() ?: return null
-                    Give(mint)
-                }
-                value == "wallet" -> Wallet
-                value == "reserves" -> Reserves
-                value == "currency-creator" -> CurrencyCreator
-                value?.startsWith("token-") == true -> {
-                    val mintString = value.removePrefix("token-").decodeBase64().base58
-                    val mint = runCatching {
-                        Mint(mintString)
-                    }.onFailure { it.printStackTrace() }.getOrNull() ?: return null
-
-                    TokenInfo(mint)
-                }
-
-                else -> return null
-            }
-        }
-    }
-}
-
-@Serializable
-@Parcelize
-data class WalletDeeplinkConnectionResult(
-    @Serializable(with = ByteListAsBase64Serializer::class) val encryptionPublicKey: List<Byte>,
-    @Serializable(with = ByteListAsBase64Serializer::class) val nonce: List<Byte>,
-    @Serializable(with = ByteListAsBase64Serializer::class) val encryptedData: List<Byte>
-): Parcelable
-
-@Serializable
-@Parcelize
-data class WalletDeeplinkSigningResult(
-    @Serializable(with = ByteListAsBase64Serializer::class) val nonce: List<Byte>,
-    @Serializable(with = ByteListAsBase64Serializer::class) val encryptedData: List<Byte>,
-): Parcelable
-
-@Serializable
-@Parcelize
-data class ExternalWalletDeeplinkError(
-    val errorCode: String,
-    val errorMessage: String,
-): Parcelable

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/onramp/ui/ConfirmInWalletButtonLabel.kt

@@ -9,12 +9,9 @@ import androidx.compose.foundation.text.appendInlineContent
 import androidx.compose.material.ButtonColors
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.key
-import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
@@ -36,9 +33,7 @@ fun buildExternalWalletButtonLabel(
     colors: ButtonColors = ButtonState.Filled.colors(),
 ): AnnotatedButtonLabel {
     val (title, icon) = when (provider) {
-        OnRampProvider.Backpack -> stringResource(R.string.label_backpack) to painterResource(R.drawable.ic_backpack_wallet)
         OnRampProvider.Phantom -> stringResource(R.string.label_phantom) to painterResource(R.drawable.ic_phantom_wallet)
-        OnRampProvider.Solflare -> stringResource(R.string.label_solflare) to painterResource(R.drawable.ic_solflare_wallet)
     }
 
     val currentIsEnabled by rememberUpdatedState(isEnabled)
@@ -74,4 +69,4 @@ fun buildExternalWalletButtonLabel(
             }
         )
     )
-}
+}

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/tokens/SwapStep.kt

@@ -30,6 +30,5 @@ sealed interface SwapStep : FlowStep, Parcelable {
     @Serializable
     data class Processing(
         val swapId: SwapId,
-        val awaitExternalWallet: Boolean = false,
     ) : SwapStep, NonDismissableRoute, NonDraggableRoute
 }