Updated on 2026-08-14

core/analytics/models/src/main/java/com/tangem/core/analytics/models/OneTimePerSessionEvent.kt

@@ -1,22 +1,32 @@
 package com.tangem.core.analytics.models
 
 /**
- * Marker interface for analytics events that should be sent only once per session.
+ * Marker interface for analytics events that can be throttled by session and/or time.
  *
- * Events implementing this interface will be tracked by their [oneTimeEventId] to ensure
+ * Events implementing this interface will be tracked by their [oneTimeEventId].
- * they are not sent multiple times during the same application session. Once an event
+ *
- * with a specific [oneTimeEventId] has been sent, subsequent attempts to send an event
+ * Behavior depends on [throttleSeconds]:
- * with the same ID will be ignored.
+ * - **null** (default): One time per session — event is sent only once during the application session.
+ * - **non-null**: Time-based throttling — event is not sent if less than [throttleSeconds] seconds
+ *   have passed since the last send for this [oneTimeEventId].
  *
  * @see Analytics.send
  */
 interface OneTimePerSessionEvent {
     /**
-     * Unique identifier for the one-time event.
+     * Unique identifier for the throttled event.
      *
-     * This ID is used to track whether the event has already been sent in the current session.
+     * This ID is used to track whether and when the event was last sent.
-     * Events with the same [oneTimeEventId] will only be sent once, even if they are
+     * Events with the same [oneTimeEventId] share the same throttling state.
-     * different instances of the same event class.
      */
     val oneTimeEventId: String
+
+    /**
+     * Minimum interval in seconds between sends for this event.
+     *
+     * - **null**: One time per session only. Event is sent at most once per session.
+     * - **non-null**: Don't send if less than this many seconds have passed since the last send.
+     */
+    val throttleSeconds: Long?
+        get() = null
 }

core/analytics/src/main/java/com/tangem/core/analytics/Analytics.kt

@@ -13,6 +13,7 @@ import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.Executors
+import java.util.concurrent.TimeUnit
 
 /**
 [REDACTED_AUTHOR]
@@ -32,7 +33,7 @@ object Analytics : GlobalAnalyticsEventHandler {
 
     private val handlers = mutableMapOf<String, AnalyticsHandler>()
     private val paramsInterceptors = ConcurrentHashMap<String, ParamsInterceptor>()
-    private val oneEventsPerSession = ConcurrentHashMap<String, Boolean>()
+    private val throttledEventsState = ConcurrentHashMap<String, Long>()
     private val analyticsFilters = mutableSetOf<AnalyticsEventFilter>()
     private val analyticsMutex = Mutex()
 
@@ -87,9 +88,7 @@ object Analytics : GlobalAnalyticsEventHandler {
 
     override fun send(event: AnalyticsEvent) {
         analyticsScope.launch {
-            if (event is OneTimePerSessionEvent &&
+            if (event is OneTimePerSessionEvent && !shouldSendThrottledEvent(event)) {
-                oneEventsPerSession.putIfAbsent(event.oneTimeEventId, true) != null
-            ) {
                 return@launch
             }
             event.params = applyParamsInterceptors(event)
@@ -137,6 +136,21 @@ object Analytics : GlobalAnalyticsEventHandler {
         return interceptedParams
     }
 
+    private fun shouldSendThrottledEvent(event: OneTimePerSessionEvent): Boolean {
+        val now = System.currentTimeMillis()
+        val id = event.oneTimeEventId
+        return when (val throttleMs = event.throttleSeconds?.let(TimeUnit.SECONDS::toMillis)) {
+            null -> throttledEventsState.putIfAbsent(id, now) == null
+            else -> throttledEventsState.compute(id) { _, lastSendTime ->
+                when {
+                    lastSendTime == null -> now
+                    now - lastSendTime >= throttleMs -> now
+                    else -> lastSendTime
+                }
+            } == now
+        }
+    }
+
     private fun createScope(): CoroutineScope {
         val name = "Analytics"
         val dispatcher = Executors.newFixedThreadPool(1).asCoroutineDispatcher()

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/details/NewsDetailsModel.kt

@@ -108,9 +108,9 @@ internal class NewsDetailsModel @Inject constructor(
     private val stateFactory by lazy(LazyThreadSafetyMode.NONE) {
         NewsDetailsStateFactory(
             currentStateProvider = Provider { _state.value },
-            shareManager = shareManager,
             onStateUpdate = { newState -> _state.update { newState } },
             onRetryClick = ::onRetryClicked,
+            onShareClick = ::onShareClick,
         )
     }
 
@@ -149,6 +149,11 @@ internal class NewsDetailsModel @Inject constructor(
         urlOpener.openUrl(relatedArticle.url)
     }
 
+    private fun onShareClick(article: ArticleUM) {
+        shareManager.shareText(article.newsUrl)
+        analyticsEventHandler.send(NewsDetailsAnalyticsEvent.NewsShareButtonClick(article.id))
+    }
+
     private fun onArticleIndexChanged(newIndex: Int) {
         stateFactory.updateSelectedArticleIndex(newIndex)
         val currentArticle = when (state.value.articlesStateUM) {

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/details/analytics/NewsDetailsAnalyticsEvent.kt

@@ -70,4 +70,20 @@ internal sealed class NewsDetailsAnalyticsEvent(
             ERROR_MESSAGE to message,
         ),
     )
+
+    data class NewsShareButtonClick(
+        private val newsId: Int,
+    ) : NewsDetailsAnalyticsEvent(
+        event = "News Share Button Clicked",
+        params = mapOf(
+            "News Id" to newsId.toString(),
+        ),
+    ), OneTimePerSessionEvent {
+        override val oneTimeEventId: String = event
+        override val throttleSeconds: Long = THROTTLE_SECONDS
+    }
+
+    private companion object {
+        const val THROTTLE_SECONDS = 10L
+    }
 }

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/details/factory/NewsDetailsStateFactory.kt

@@ -1,6 +1,5 @@
 package com.tangem.features.feed.model.news.details.factory
 
-import com.tangem.core.navigation.share.ShareManager
 import com.tangem.features.feed.ui.news.details.state.ArticleUM
 import com.tangem.features.feed.ui.news.details.state.ArticlesStateUM
 import com.tangem.features.feed.ui.news.details.state.NewsDetailsUM
@@ -10,7 +9,7 @@ import kotlinx.collections.immutable.toImmutableList
 
 internal class NewsDetailsStateFactory(
     private val currentStateProvider: Provider<NewsDetailsUM>,
-    private val shareManager: ShareManager,
+    private val onShareClick: (ArticleUM) -> Unit,
     private val onStateUpdate: (NewsDetailsUM) -> Unit,
     private val onRetryClick: () -> Unit,
 ) {
@@ -23,11 +22,7 @@ internal class NewsDetailsStateFactory(
                 articles = articles.toImmutableList(),
                 articlesStateUM = ArticlesStateUM.Content,
                 selectedArticleIndex = selectedIndex,
-                onShareClick = {
+                onShareClick = { currentArticle?.let(onShareClick) },
-                    currentArticle?.let {
-                        shareManager.shareText(it.newsUrl)
-                    }
-                },
             ),
         )
     }
@@ -38,11 +33,7 @@ internal class NewsDetailsStateFactory(
         onStateUpdate(
             currentState.copy(
                 selectedArticleIndex = newIndex,
-                onShareClick = {
+                onShareClick = { currentArticle?.let(onShareClick) },
-                    currentArticle?.let {
-                        shareManager.shareText(it.newsUrl)
-                    }
-                },
             ),
         )
     }