Updated on 2026-08-14

app/src/main/java/com/tangem/tap/network/auth/ExpressAuthProviderImpl.kt

@@ -0,0 +1,35 @@
+package com.tangem.tap.network.auth
+
+import com.tangem.common.extensions.toHexString
+import com.tangem.datasource.local.userwallet.UserWalletsStore
+import com.tangem.domain.wallets.legacy.WalletsStateHolder
+import com.tangem.lib.auth.AuthProvider
+import com.tangem.lib.auth.ExpressAuthProvider
+import com.tangem.lib.auth.ExpressSessionIdGenerator
+import com.tangem.tap.proxy.AppStateHolder
+import java.util.UUID
+
+class ExpressAuthProviderImpl(
+    private val walletStateHolder: WalletsStateHolder,
+    private val userWalletsStore: UserWalletsStore,
+    private val appStateHolder: AppStateHolder
+) : ExpressAuthProvider, ExpressSessionIdGenerator {
+
+    private var uuid = UUID.randomUUID()
+
+    override fun getApiKey(): String {
+        TODO()
+    }
+
+    override fun getUserId(): String {
+        return userWalletsStore.selectedUserWalletOrNull?.walletId?.stringValue ?: ""
+    }
+
+    override fun getSessionId(): String {
+        return uuid.toString()
+    }
+
+    override fun generateNewSessionId() {
+        uuid = UUID.randomUUID()
+    }
+}

core/datasource/src/main/java/com/tangem/datasource/api/express/ExpressApi.kt

@@ -20,9 +20,6 @@ interface ExpressApi {
     // TODO move first three params to retrofit interceptor
     @POST("assets")
     suspend fun getAssets(
-        @Header("api-key") apiKey: String,
-        @Header("user-id") userId: String,
-        @Header("session-id") sessionId: String,
         @Body body: AssetsRequestBody,
     ): ApiResponse<List<Asset>>
 
@@ -55,6 +52,6 @@ interface ExpressApi {
         @Query("toAddress") toAddress: String,
     ): ApiResponse<ExchangeDataResponse>
 
-    @GET("exchange-results")
+    @GET("exchange-result")
     suspend fun getExchangeResults(@Query("txId") txId: String): ApiResponse<ExchangeResultsResponse>
 }

core/datasource/src/main/java/com/tangem/datasource/di/NetworkModule.kt

@@ -3,12 +3,15 @@ package com.tangem.datasource.di
 import android.content.Context
 import com.squareup.moshi.Moshi
 import com.tangem.datasource.api.common.response.ApiResponseCallAdapterFactory
+import com.tangem.datasource.api.express.ExpressApi
 import com.tangem.datasource.api.promotion.PromotionApi
 import com.tangem.datasource.api.tangemTech.TangemTechApi
+import com.tangem.datasource.utils.RequestHeader
 import com.tangem.datasource.utils.RequestHeader.*
 import com.tangem.datasource.utils.addHeaders
 import com.tangem.datasource.utils.addLoggers
 import com.tangem.lib.auth.AuthProvider
+import com.tangem.lib.auth.ExpressAuthProvider
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
@@ -24,6 +27,28 @@ import javax.inject.Singleton
 @InstallIn(SingletonComponent::class)
 class NetworkModule {
 
+    @Provides
+    @Singleton
+    fun provideExpressApi(
+        @NetworkMoshi moshi: Moshi,
+        @ApplicationContext context: Context,
+        expressAuthProvider: ExpressAuthProvider,
+    ): ExpressApi {
+
+        return Retrofit.Builder()
+            .addConverterFactory(MoshiConverterFactory.create(moshi))
+            .addCallAdapterFactory(ApiResponseCallAdapterFactory.create())
+            .baseUrl(DEV_EXPRESS_BASE_URL)
+            .client(
+                OkHttpClient.Builder()
+                    .addHeaders(Express(expressAuthProvider))
+                    .addLoggers(context)
+                    .build(),
+            )
+            .build()
+            .create(ExpressApi::class.java)
+    }
+
     @Provides
     @Singleton
     fun provideTangemTechApi(@NetworkMoshi moshi: Moshi, @ApplicationContext context: Context): TangemTechApi {
@@ -74,6 +99,9 @@ class NetworkModule {
     }
 
     private companion object {
+        const val PROD_EXPRESS_BASE_URL = "[REDACTED_ENV_URL]"
+        const val DEV_EXPRESS_BASE_URL = "[REDACTED_ENV_URL]"
+
         const val PROD_TANGEM_TECH_BASE_URL = "https://api.tangem-tech.com/v1/"
         const val DEV_TANGEM_TECH_BASE_URL = "https://devapi.tangem-tech.com/v1/"
 

core/datasource/src/main/java/com/tangem/datasource/utils/RequestHeader.kt

@@ -1,6 +1,7 @@
 package com.tangem.datasource.utils
 
 import com.tangem.lib.auth.AuthProvider
+import com.tangem.lib.auth.ExpressAuthProvider
 
 /**
  * Presentation of request header
@@ -18,4 +19,10 @@ sealed class RequestHeader(vararg pairs: Pair<String, () -> String>) {
         "card_id" to { authProvider.getCardId() },
         "card_public_key" to { authProvider.getCardPublicKey() },
     )
+
+    class Express(expressAuthProvider: ExpressAuthProvider): RequestHeader(
+        "api-key" to { expressAuthProvider.getApiKey() },
+        "user-id" to { expressAuthProvider.getUserId() },
+        "session-id" to { expressAuthProvider.getSessionId() }
+    )
 }

libs/auth/src/main/java/com/tangem/lib/auth/ExpressAuthProvider.kt

@@ -0,0 +1,10 @@
+package com.tangem.lib.auth
+
+interface ExpressAuthProvider {
+
+    fun getApiKey(): String
+
+    fun getUserId(): String
+
+    fun getSessionId(): String
+}

libs/auth/src/main/java/com/tangem/lib/auth/ExpressSessionIdRefresher.kt

@@ -0,0 +1,6 @@
+package com.tangem.lib.auth
+
+interface ExpressSessionIdGenerator {
+
+    fun generateNewSessionId()
+}