Implement background time threshold check for modal message display.

Author: anikiki

app/src/main/java/com/duckduckgo/app/browser/remotemessage/RemoteMessageModalSurfaceEvaluator.kt

@@ -18,6 +18,7 @@ package com.duckduckgo.app.browser.remotemessage
 
 import android.content.Context
 import android.content.Intent
+import android.os.SystemClock
 import androidx.lifecycle.LifecycleOwner
 import com.duckduckgo.app.cta.db.DismissedCtaDao
 import com.duckduckgo.app.cta.model.CtaId
@@ -80,25 +81,46 @@ class RemoteMessageModalSurfaceEvaluatorImpl @Inject constructor(
                 return@withContext
             }
 
-            // TODO ANA: This is now called all the time. Update!
+            if (!hasMetBackgroundTimeThreshold()) {
+                return@withContext
+            }
+
             val message = remoteMessagingRepository.message() ?: return@withContext
+
             if (message.surfaces.contains(Surface.MODAL)) {
                 val intent = globalActivityStarter.startIntent(
                     applicationContext,
                     ModalSurfaceActivityFromMessageId(message.id, message.content.messageType),
                 ) ?: return@withContext
 
-                intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP
-                applicationContext.startActivity(intent)
+                withContext(dispatchers.main()) {
+                    intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_SINGLE_TOP
+                    applicationContext.startActivity(intent)
+                }
             }
         }
     }
 
+    private fun hasMetBackgroundTimeThreshold(): Boolean {
+        if (!settingsDataStore.hasBackgroundTimestampRecorded()) {
+            return false
+        }
+
+        val backgroundTimestamp = settingsDataStore.appBackgroundedTimestamp
+        // Using elapsed real time as this is how it's saved in the data store.
+        val currentTimestamp = SystemClock.elapsedRealtime()
+        return (currentTimestamp - backgroundTimestamp) >= BACKGROUND_THRESHOLD_MILLIS
+    }
+
     private fun isHomeOnboardingComplete(): Boolean {
         val noBrowserCtaExperiment = extendedOnboardingFeatureToggles.noBrowserCtas().isEnabled()
         return dismissedCtaDao.exists(CtaId.DAX_END) ||
             noBrowserCtaExperiment ||
             settingsDataStore.hideTips ||
             dismissedCtaDao.exists(CtaId.ADD_WIDGET)
     }
+
+    companion object {
+        private const val BACKGROUND_THRESHOLD_MILLIS = 4 * 60 * 60 * 1000L // 4 hours
+    }
 }