Updated on 2026-08-14

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

@@ -0,0 +1,27 @@
+package com.tangem.datasource.di
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.adapter
+import com.tangem.datasource.asset.AssetReader
+import com.tangem.datasource.local.testnet.DefaultTestnetTokensStorage
+import com.tangem.datasource.local.testnet.TestnetTokensStorage
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+/**
+[REDACTED_AUTHOR]
+ */
+@Module
+@InstallIn(SingletonComponent::class)
+object TestnetTokensStorageModule {
+
+    @OptIn(ExperimentalStdlibApi::class)
+    @Provides
+    @Singleton
+    fun providesTestnetTokensStorage(assetReader: AssetReader, @SdkMoshi moshi: Moshi): TestnetTokensStorage {
+        return DefaultTestnetTokensStorage(assetReader = assetReader, adapter = moshi.adapter())
+    }
+}

core/datasource/src/main/java/com/tangem/datasource/local/testnet/DefaultTestnetTokensStorage.kt

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+package com.tangem.datasource.local.testnet
+
+import com.squareup.moshi.JsonAdapter
+import com.tangem.datasource.asset.AssetReader
+import com.tangem.datasource.local.testnet.models.TestnetTokensConfig
+
+/**
+ * Default implementation for storing testnet tokens data
+ *
+ * @property assetReader file reader from assets
+ * @property adapter     adapter for parsing testnet tokens config
+ *
+[REDACTED_AUTHOR]
+ */
+internal class DefaultTestnetTokensStorage(
+    private val assetReader: AssetReader,
+    private val adapter: JsonAdapter<TestnetTokensConfig>,
+) : TestnetTokensStorage {
+
+    override fun getConfig(): TestnetTokensConfig {
+        return requireNotNull(
+            value = adapter.fromJson(
+                assetReader.readJson(fileName = LOCAL_CONFIG_PATH),
+            ),
+        )
+    }
+
+    private companion object {
+        const val LOCAL_CONFIG_PATH: String = "testnet_tokens"
+    }
+}

core/datasource/src/main/java/com/tangem/datasource/local/testnet/TestnetTokensStorage.kt

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+package com.tangem.datasource.local.testnet
+
+import com.tangem.datasource.local.testnet.models.TestnetTokensConfig
+
+/**
+ * Storage of testnet tokens data
+ *
+[REDACTED_AUTHOR]
+ */
+interface TestnetTokensStorage {
+
+    /** Get a testnet tokens data */
+    fun getConfig(): TestnetTokensConfig
+}

core/datasource/src/main/java/com/tangem/datasource/local/testnet/models/TestnetTokensConfig.kt

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+package com.tangem.datasource.local.testnet.models
+
+import com.squareup.moshi.Json
+
+/**
+ * Config model with testnet tokens list
+ *
+ * @property tokens testnet tokens list
+ */
+data class TestnetTokensConfig(
+    @Json(name = "coins") val tokens: List<Token>,
+) {
+
+    /**
+     * Testnet token model
+     *
+     * @property id       token id
+     * @property name     token name
+     * @property symbol   token brief name. Example, "BTC"
+     * @property networks networks of testnet token
+     */
+    data class Token(
+        @Json(name = "id") val id: String,
+        @Json(name = "name") val name: String,
+        @Json(name = "symbol") val symbol: String,
+        @Json(name = "networks") val networks: List<Network>? = null,
+    ) {
+
+        /**
+         * Network model of testnet token
+         *
+         * @property id           network id
+         * @property address      network address
+         * @property decimalCount decimal count
+         */
+        data class Network(
+            @Json(name = "networkId") val id: String,
+            @Json(name = "contractAddress") val address: String?,
+            @Json(name = "decimalCount") val decimalCount: Int?,
+        )
+    }
+}