Add checking current student in background services (#295)

.travis.yml

@@ -11,10 +11,10 @@ cache:
     - $HOME/.gradle/caches/
     - $HOME/.gradle/wrapper/
 
-#branches:
+branches:
-#  only:
+  only:
-#  - master
+  - master
-#  - 0.7.x
+  - 0.7.x
 
 android:
  licenses:

app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt

@@ -34,12 +34,17 @@ class SyncWorker @AssistedInject constructor(
 ) : RxWorker(appContext, workerParameters) {
 
     override fun createWork(): Single<Result> {
-        return studentRepository.getCurrentStudent()
+        return studentRepository.isStudentSaved()
-            .flatMapCompletable { student ->
+            .flatMapCompletable { isSaved ->
-                semesterRepository.getCurrentSemester(student, true)
+                if (isSaved) {
-                    .flatMapCompletable { semester ->
+                    studentRepository.getCurrentStudent()
-                        Completable.mergeDelayError(works.map { it.create(student, semester) })
+                        .flatMapCompletable { student ->
-                    }
+                            semesterRepository.getCurrentSemester(student)
+                                .flatMapCompletable { semester ->
+                                    Completable.mergeDelayError(works.map { it.create(student, semester) })
+                                }
+                        }
+                } else Completable.complete()
             }
             .toSingleDefault(Result.success())
             .onErrorReturn {

app/src/main/java/io/github/wulkanowy/ui/widgets/timetable/TimetableWidgetFactory.kt

@@ -17,6 +17,7 @@ import io.github.wulkanowy.data.repositories.student.StudentRepository
 import io.github.wulkanowy.data.repositories.timetable.TimetableRepository
 import io.github.wulkanowy.utils.SchedulersProvider
 import io.github.wulkanowy.utils.toFormattedString
+import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import timber.log.Timber
 
@@ -51,9 +52,13 @@ class TimetableWidgetFactory(
             ?.let { date ->
                 try {
                     lessons = studentRepository.isStudentSaved()
-                        .flatMap { studentRepository.getCurrentStudent() }
+                        .flatMap { isSaved ->
-                        .flatMap { semesterRepository.getCurrentSemester(it) }
+                            if (isSaved) {
-                        .flatMap { timetableRepository.getTimetable(it, date, date) }
+                                studentRepository.getCurrentStudent()
+                                    .flatMap { semesterRepository.getCurrentSemester(it) }
+                                    .flatMap { timetableRepository.getTimetable(it, date, date) }
+                            } else Single.just(emptyList())
+                        }
                         .map { item -> item.sortedBy { it.number } }
                         .subscribeOn(schedulers.backgroundThread)
                         .blockingGet()