Updated on 2026-08-14

app/src/main/java/com/tangem/tap/features/hot/TangemHotSDKProxy.kt

@@ -0,0 +1,53 @@
+package com.tangem.tap.features.hot
+
+import com.tangem.crypto.bip39.Mnemonic
+import com.tangem.hot.sdk.TangemHotSdk
+import com.tangem.hot.sdk.model.*
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.withTimeout
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Proxy for [TangemHotSdk] to allow lazy initialization and provide a way to access the SDK state from domain layer.
+ * SDK is initialized in the [com.tangem.tap.routing.component.RoutingComponent] and can be accessed through this proxy.
+ * Be aware that the SDK is initialized on activity creation, so it may not be available immediately.
+ */
+@Singleton
+class TangemHotSDKProxy @Inject constructor() : TangemHotSdk {
+
+    val sdkState = MutableStateFlow<TangemHotSdk?>(null)
+
+    override suspend fun importWallet(mnemonic: Mnemonic, passphrase: CharArray?, auth: HotAuth): HotWalletId =
+        callSdk { importWallet(mnemonic, passphrase, auth) }
+
+    override suspend fun generateWallet(auth: HotAuth, mnemonicType: MnemonicType): HotWalletId =
+        callSdk { generateWallet(auth, mnemonicType) }
+
+    override suspend fun exportMnemonic(unlockHotWallet: UnlockHotWallet): SeedPhrasePrivateInfo =
+        callSdk { exportMnemonic(unlockHotWallet) }
+
+    override suspend fun exportBackup(unlockHotWallet: UnlockHotWallet): ByteArray =
+        callSdk { exportBackup(unlockHotWallet) }
+
+    override suspend fun delete(id: HotWalletId) = callSdk { delete(id) }
+
+    override suspend fun changeAuth(unlockHotWallet: UnlockHotWallet, auth: HotAuth): HotWalletId =
+        callSdk { changeAuth(unlockHotWallet, auth) }
+
+    override suspend fun derivePublicKey(
+        unlockHotWallet: UnlockHotWallet,
+        request: DeriveWalletRequest,
+    ): DerivedPublicKeyResponse = callSdk { derivePublicKey(unlockHotWallet, request) }
+
+    override suspend fun signHashes(unlockHotWallet: UnlockHotWallet, dataToSign: List<DataToSign>): List<SignedData> =
+        callSdk { signHashes(unlockHotWallet, dataToSign) }
+
+    private suspend fun <T> callSdk(block: suspend TangemHotSdk.() -> T): T {
+        return withTimeout(timeMillis = 1000) {
+            sdkState.filterNotNull().first()
+        }.block()
+    }
+}