[MBL-702] Update Project Watch Count and List on Dashboard for Prelau…

…nch Projects (#1814)

* Fixed the count of saved projects and added a debounce just so we're not spamming calls at a rate faster than 1 per sec.

* added corrections to existing tests - now the saved button title gets its saved projects count from the graphql call.

Library/ViewModels/BackerDashboardViewModel.swift

@@ -108,7 +108,8 @@ public final class BackerDashboardViewModel: BackerDashboardViewModelType, Backe
       .map { (.backed, DiscoveryParams.Sort.endingSoon) }
 
     let fetchedUserEvent = Signal.merge(
-      self.projectSavedProperty.signal.ignoreValues(),
+      self.projectSavedProperty.signal.ignoreValues()
+        .ksr_debounce(.seconds(1), on: AppEnvironment.current.scheduler),
       self.viewWillAppearProperty.signal.ignoreValues()
     )
     .switchMap { _ in
@@ -118,9 +119,33 @@ public final class BackerDashboardViewModel: BackerDashboardViewModelType, Backe
         .materialize()
     }
 
+    let graphUserEvent = Signal.merge(
+      self.projectSavedProperty.signal.ignoreValues()
+        .ksr_debounce(.seconds(1), on: AppEnvironment.current.scheduler),
+      self.viewWillAppearProperty.signal.ignoreValues()
+    )
+    .switchMap { _ in
+      AppEnvironment.current
+        .apiService.fetchGraphUserSelf()
+        .ksr_delay(AppEnvironment.current.apiDelayInterval, on: AppEnvironment.current.scheduler)
+        .materialize()
+    }
+
     let user = fetchedUserEvent.values()
 
+    let updatedUserWithSavedProjectsCount = graphUserEvent.values()
+      .map { $0.me }
+
     self.updateCurrentUserInEnvironment = user.skip(first: 1)
+      .takePairWhen(updatedUserWithSavedProjectsCount)
+      .map { user, graphEventUser in
+        var updatedUserWithStarredProjectsCount = user
+
+        updatedUserWithStarredProjectsCount.stats.starredProjectsCount = graphEventUser.stats
+          .starredProjectsCount
+
+        return updatedUserWithStarredProjectsCount
+      }
 
     self.postNotification = self.currentUserUpdatedInEnvironmentProperty.signal
       .mapConst(Notification(name: .ksr_userUpdated, object: nil))
@@ -133,7 +158,7 @@ public final class BackerDashboardViewModel: BackerDashboardViewModelType, Backe
 
     self.backerNameText = user.map { $0.name }
 
-    self.savedButtonTitleText = user.map { user in
+    self.savedButtonTitleText = updatedUserWithSavedProjectsCount.map { user in
       Strings.projects_count_newline_saved(projects_count: user.stats.starredProjectsCount ?? 0)
     }
 

Library/ViewModels/BackerDashboardViewModelTests.swift

@@ -59,7 +59,10 @@ internal final class BackerDashboardViewModelTests: TestCase {
       |> \.stats.starredProjectsCount .~ 58
       |> \.avatar.large .~ "http://cats.com/furball.jpg"
 
+    let userEnvelope = UserEnvelope(me: user)
+
     withEnvironment(apiService: MockService(
+      fetchGraphUserSelfResult: .success(userEnvelope),
       fetchUserSelfResponse: user
     )) {
       AppEnvironment.login(AccessTokenEnvelope(accessToken: "deadbeef", user: user))
@@ -84,7 +87,7 @@ internal final class BackerDashboardViewModelTests: TestCase {
       self.avatarURL.assertValues(["http://cats.com/furball.jpg", "http://cats.com/furball.jpg"])
       self.backedButtonTitleText.assertValues(["45\nbacked", "45\nbacked"])
       self.backerNameText.assertValues(["Princess Vespa", "Princess Vespa"])
-      self.savedButtonTitleText.assertValues(["58\nsaved", "58\nsaved"])
+      self.savedButtonTitleText.assertValues(["58\nsaved"])
       self.setSelectedButton.assertValues([.backed])
       self.sortBarIsHidden.assertValues([true])
       self.embeddedViewTopConstraintConstant.assertValues([0.0])