Bug 1991998 - Add telemetry to snackbar and undo button for removing downloads [part 1] a=RyanVM

Original Revision: https://phabricator.services.mozilla.com/D267081

Differential Revision: https://phabricator.services.mozilla.com/D267488

Author: Gela

mobile/android/fenix/app/metrics.yaml

@@ -14321,6 +14321,30 @@ downloads:
     notification_emails:
       - android-probes@mozilla.com
     expires: never
+  delete_snackbar_shown:
+    type: event
+    description: A delete snackbar was shown after one or more downloads were deleted.
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1991998
+    data_reviews:
+      - https://phabricator.services.mozilla.com/D267081
+    data_sensitivity:
+      - interaction
+    notification_emails:
+      - android-probes@mozilla.com
+    expires: never
+  delete_snackbar_undo_clicked:
+    type: event
+    description: The user clicked the undo button in a downloads delete snackbar.
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1991998
+    data_reviews:
+      - https://phabricator.services.mozilla.com/D267081
+    data_sensitivity:
+      - interaction
+    notification_emails:
+      - android-probes@mozilla.com
+    expires: never
 
 client_association:
   uid:

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/downloads/listscreen/middleware/DownloadTelemetryMiddleware.kt

@@ -60,6 +60,14 @@ class DownloadTelemetryMiddleware : Middleware<DownloadUIState, DownloadUIAction
                 Downloads.retryDownload.record(NoExtras())
             }
 
+            is DownloadUIAction.AddPendingDeletionSet -> {
+                Downloads.deleteSnackbarShown.record(NoExtras())
+            }
+
+            is DownloadUIAction.UndoPendingDeletion -> {
+                Downloads.deleteSnackbarUndoClicked.record(NoExtras())
+            }
+
             else -> {}
         }
     }

mobile/android/fenix/app/src/test/java/org/mozilla/fenix/downloads/listscreen/middleware/DownloadTelemetryMiddlewareTest.kt

@@ -143,6 +143,34 @@ class DownloadTelemetryMiddlewareTest {
         assertEquals("cancel_download", snapshot.single().name)
     }
 
+    @Test
+    fun `WHEN the user adds a pending deletion set THEN record delete snackbar shown telemetry`() {
+        val store = createStore()
+
+        assertNull(Downloads.deleteSnackbarShown.testGetValue())
+
+        store.dispatch(DownloadUIAction.AddPendingDeletionSet(setOf("id")))
+
+        assertNotNull(Downloads.deleteSnackbarShown.testGetValue())
+        val snapshot = Downloads.deleteSnackbarShown.testGetValue()!!
+        assertEquals(1, snapshot.size)
+        assertEquals("delete_snackbar_shown", snapshot.single().name)
+    }
+
+    @Test
+    fun `WHEN the user undoes a pending deletion THEN record delete snackbar undo clicked telemetry`() {
+        val store = createStore()
+
+        assertNull(Downloads.deleteSnackbarUndoClicked.testGetValue())
+
+        store.dispatch(DownloadUIAction.UndoPendingDeletion)
+
+        assertNotNull(Downloads.deleteSnackbarUndoClicked.testGetValue())
+        val snapshot = Downloads.deleteSnackbarUndoClicked.testGetValue()!!
+        assertEquals(1, snapshot.size)
+        assertEquals("delete_snackbar_undo_clicked", snapshot.single().name)
+    }
+
     private fun createStore(
         downloadUIState: DownloadUIState = DownloadUIState.INITIAL,
     ) = DownloadUIStore(