Tweak WorkManager task cancellation, add flex times

app/build.gradle

@@ -163,7 +163,9 @@ dependencies {
     implementation 'org.jsoup:jsoup:1.12.1'
 
     // Job scheduling
-    implementation 'android.arch.work:work-runtime:2.3.2'
+    final workManagerVersion = '2.3.2'
+    implementation "android.arch.work:work-runtime:$workManagerVersion"
+    implementation "android.arch.work:work-runtime-ktx:$workManagerVersion"
 
     // Changelog
     implementation 'com.github.gabrielemariotti.changeloglib:changelog:2.1.0'

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupCreatorJob.kt

@@ -32,16 +32,16 @@ class BackupCreatorJob(private val context: Context, workerParams: WorkerParamet
             val preferences = Injekt.get<PreferencesHelper>()
             val interval = prefInterval ?: preferences.backupInterval().getOrDefault()
             if (interval > 0) {
-                val request = PeriodicWorkRequestBuilder<BackupCreatorJob>(interval.toLong(), TimeUnit.HOURS)
+                val request = PeriodicWorkRequestBuilder<BackupCreatorJob>(
+                        interval.toLong(), TimeUnit.HOURS,
+                        10, TimeUnit.MINUTES)
                         .addTag(TAG)
                         .build()
 
                 WorkManager.getInstance().enqueueUniquePeriodicWork(TAG, ExistingPeriodicWorkPolicy.REPLACE, request)
+            } else {
+                WorkManager.getInstance().cancelAllWorkByTag(TAG)
             }
         }
-
-        fun cancelTask() {
-            WorkManager.getInstance().cancelAllWorkByTag(TAG)
-        }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateJob.kt

@@ -41,17 +41,17 @@ class LibraryUpdateJob(private val context: Context, workerParams: WorkerParamet
                         .setRequiresCharging(acRestriction)
                         .build()
 
-                val request = PeriodicWorkRequestBuilder<LibraryUpdateJob>(interval.toLong(), TimeUnit.HOURS)
+                val request = PeriodicWorkRequestBuilder<LibraryUpdateJob>(
+                        interval.toLong(), TimeUnit.HOURS,
+                        10, TimeUnit.MINUTES)
                         .addTag(TAG)
                         .setConstraints(constraints)
                         .build()
 
                 WorkManager.getInstance().enqueueUniquePeriodicWork(TAG, ExistingPeriodicWorkPolicy.REPLACE, request)
+            } else {
+                WorkManager.getInstance().cancelAllWorkByTag(TAG)
             }
         }
-
-        fun cancelTask() {
-            WorkManager.getInstance().cancelAllWorkByTag(TAG)
-        }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/data/updater/UpdaterJob.kt

@@ -62,7 +62,9 @@ class UpdaterJob(private val context: Context, workerParams: WorkerParameters) :
                     .setRequiredNetworkType(NetworkType.CONNECTED)
                     .build()
 
-            val request = PeriodicWorkRequestBuilder<UpdaterJob>(1, TimeUnit.DAYS)
+            val request = PeriodicWorkRequestBuilder<UpdaterJob>(
+                    1, TimeUnit.DAYS,
+                    1, TimeUnit.HOURS)
                     .addTag(TAG)
                     .setConstraints(constraints)
                     .build()

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsBackupController.kt

@@ -105,13 +105,8 @@ class SettingsBackupController : SettingsController() {
                 summary = "%s"
 
                 onChange { newValue ->
-                    // Always cancel the previous task, it seems that sometimes they are not updated
-                    BackupCreatorJob.cancelTask()
-
                     val interval = (newValue as String).toInt()
-                    if (interval > 0) {
-                        BackupCreatorJob.setupTask(interval)
-                    }
+                    BackupCreatorJob.setupTask(interval)
                     true
                 }
             }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt

@@ -86,13 +86,8 @@ class SettingsLibraryController : SettingsController() {
                 summary = "%s"
 
                 onChange { newValue ->
-                    // Always cancel the previous task, it seems that sometimes they are not updated.
-                    LibraryUpdateJob.cancelTask()
-
                     val interval = (newValue as String).toInt()
-                    if (interval > 0) {
-                        LibraryUpdateJob.setupTask(interval)
-                    }
+                    LibraryUpdateJob.setupTask(interval)
                     true
                 }
             }