Updated on 2026-08-14

app/src/main/java/com/tangem/tap/di/domain/FeedbackDomainModule.kt

@@ -0,0 +1,25 @@
+package com.tangem.tap.di.domain
+
+import android.content.Context
+import com.tangem.domain.feedback.GetSupportFeedbackEmailUseCase
+import com.tangem.domain.feedback.repository.FeedbackRepository
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+internal object FeedbackDomainModule {
+
+    @Provides
+    @Singleton
+    fun provideGetFeedbackToSupportUseCase(
+        feedbackRepository: FeedbackRepository,
+        @ApplicationContext context: Context,
+    ): GetSupportFeedbackEmailUseCase {
+        return GetSupportFeedbackEmailUseCase(feedbackRepository = feedbackRepository, resources = context.resources)
+    }
+}

domain/feedback/build.gradle.kts

@@ -9,5 +9,8 @@ android {
 }
 
 dependencies {
+    implementation(deps.arrow.core)
+    implementation(deps.jodatime)
+
     implementation(projects.core.res)
 }

domain/feedback/src/main/java/com/tangem/domain/feedback/GetSupportFeedbackEmailUseCase.kt

@@ -0,0 +1,95 @@
+package com.tangem.domain.feedback
+
+import android.content.res.Resources
+import com.tangem.domain.feedback.models.CardInfo
+import com.tangem.domain.feedback.models.SupportFeedbackEmail
+import com.tangem.domain.feedback.repository.FeedbackRepository
+import com.tangem.domain.feedback.utils.skipLine
+import org.joda.time.DateTime
+import org.joda.time.format.DateTimeFormatterBuilder
+import java.util.Locale
+
+/**
+ * Get email with feedback for support
+ *
+ * @property feedbackRepository feedback repository
+ * @property resources          resources for getting strings
+ *
+[REDACTED_AUTHOR]
+ */
+class GetSupportFeedbackEmailUseCase(
+    private val feedbackRepository: FeedbackRepository,
+    private val resources: Resources,
+) {
+
+    // 00.00 00:00:00.000
+    private val dateFormatter = DateTimeFormatterBuilder()
+        .appendDayOfMonth(2)
+        .appendLiteral('.')
+        .appendMonthOfYear(2)
+        .appendLiteral(' ')
+        .appendHourOfDay(2)
+        .appendLiteral(':')
+        .appendMinuteOfHour(2)
+        .appendLiteral(':')
+        .appendSecondOfMinute(2)
+        .appendLiteral('.')
+        .appendMillisOfSecond(3)
+        .toFormatter()
+        .withLocale(Locale.getDefault())
+
+    suspend operator fun invoke(): SupportFeedbackEmail {
+        val cardInfo = feedbackRepository.getCardInfo()
+
+        return SupportFeedbackEmail(
+            address = getEmail(isStart2Coin = cardInfo.isStart2Coin),
+            subject = getSubject(isStart2Coin = cardInfo.isStart2Coin),
+            message = createMessage(cardInfo),
+            file = feedbackRepository.createLogFile(logs = getLogs()),
+        )
+    }
+
+    private fun getEmail(isStart2Coin: Boolean): String {
+        return if (isStart2Coin) START2COIN_SUPPORT_EMAIL else TANGEM_SUPPORT_EMAIL
+    }
+
+    private fun getSubject(isStart2Coin: Boolean): String {
+        return resources.getString(
+            if (isStart2Coin) {
+                R.string.feedback_subject_support
+            } else {
+                R.string.feedback_subject_support_tangem
+            },
+        )
+    }
+
+    private suspend fun createMessage(cardInfo: CardInfo): String {
+        return StringBuilder().apply {
+            append(resources.getString(R.string.feedback_preface_support))
+            skipLine()
+            append(resources.getString(R.string.feedback_data_collection_message))
+            skipLine()
+            append(
+                FeedbackDataBuilder().apply {
+                    addCardInfo(cardInfo)
+                    addDelimiter()
+                    addBlockchainInfoList(blockchainInfoList = feedbackRepository.getBlockchainInfoList())
+                    addDelimiter()
+                    addPhoneInfo(phoneInfo = feedbackRepository.getPhoneInfo())
+                }.build(),
+            )
+        }.toString()
+    }
+
+    private suspend fun getLogs(): List<String> {
+        return feedbackRepository.getAppLogs().map {
+            val date = dateFormatter.print(DateTime(it.timestamp))
+            "$date: ${it.message}\n"
+        }
+    }
+
+    private companion object {
+        const val START2COIN_SUPPORT_EMAIL = "cardsupport@start2coin.com"
+        const val TANGEM_SUPPORT_EMAIL = "support@tangem.com"
+    }
+}

domain/feedback/src/main/java/com/tangem/domain/feedback/models/SupportFeedbackEmail.kt

@@ -0,0 +1,10 @@
+package com.tangem.domain.feedback.models
+
+import java.io.File
+
+data class SupportFeedbackEmail(
+    val address: String,
+    val subject: String,
+    val message: String,
+    val file: File? = null,
+)