Schedule the source refresh using WorkManager

app/build.gradle

@@ -111,6 +111,7 @@ dependencies {
     implementation 'com.frostnerd.utilskt:general:1.0.16' // https://git.frostnerd.com/AndroidUtils/generalkt (Accessible after logging in [free of charge])
     implementation 'com.frostnerd.utilskt:adapters:1.1.1' // https://git.frostnerd.com/AndroidUtils/Adapters (Accessible after logging in [free of charge])
 
+    implementation 'androidx.work:work-runtime:2.2.0-rc01'
     implementation 'androidx.appcompat:appcompat:1.1.0-rc01'
     implementation "androidx.preference:preference:1.1.0-rc01"
     implementation "com.google.android.material:material:1.1.0-alpha09"

app/src/main/java/com/frostnerd/smokescreen/dialog/HostSourceRefreshDialog.kt

@@ -27,7 +27,8 @@ import kotlinx.android.synthetic.main.dialog_host_source_refresh.view.*
  * You can contact the developer at daniel.wolf@frostnerd.com.
  */
 class HostSourceRefreshDialog(context:Context,
-                              runRefresh:() -> Unit):AlertDialog(context, context.getPreferences().theme.dialogStyle) {
+                              runRefresh:() -> Unit,
+                              refreshConfigChanged:() -> Unit):AlertDialog(context, context.getPreferences().theme.dialogStyle) {
 
     init {
         setTitle(R.string.dialog_hostsourcerefresh_title)
@@ -54,7 +55,7 @@ class HostSourceRefreshDialog(context:Context,
             context.getPreferences().automaticHostRefreshWifiOnly = view.refreshWifiOnly.isChecked
             context.getPreferences().automaticHostRefreshTimeAmount = view.timeAmount.text.toString().toInt()
             context.getPreferences().automaticHostRefreshTimeUnit = TimeUnit.values().find { it.ordinal == view.timeUnit.selectedItemPosition }!!
-
+            refreshConfigChanged()
         }
     }
 

app/src/main/java/com/frostnerd/smokescreen/fragment/DnsRuleFragment.kt

@@ -12,6 +12,10 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import androidx.work.Constraints
+import androidx.work.NetworkType
+import androidx.work.PeriodicWorkRequest
+import androidx.work.WorkManager
 import com.frostnerd.cacheadapter.ListDataSource
 import com.frostnerd.cacheadapter.ModelAdapterBuilder
 import com.frostnerd.general.service.isServiceRunning
@@ -28,8 +32,10 @@ import com.frostnerd.smokescreen.dialog.NewHostSourceDialog
 import com.frostnerd.smokescreen.service.RuleExportService
 import com.frostnerd.smokescreen.service.RuleImportService
 import com.frostnerd.smokescreen.util.SpaceItemDecorator
+import com.frostnerd.smokescreen.util.worker.RuleImportStartWorker
 import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.activity_dns_rules.*
+import kotlinx.android.synthetic.main.dialog_host_source_refresh.*
 import kotlinx.android.synthetic.main.item_datasource.view.*
 import kotlinx.android.synthetic.main.item_datasource.view.cardContent
 import kotlinx.android.synthetic.main.item_datasource.view.delete
@@ -40,6 +46,8 @@ import kotlinx.android.synthetic.main.item_dnsrule_host.view.*
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
+import java.time.Duration
+import java.util.concurrent.TimeUnit
 
 /*
  * Copyright (C) 2019 Daniel Wolf (Ch4t4r)
@@ -119,7 +127,7 @@ class DnsRuleFragment : Fragment() {
             }).show()
         }
         refresh.setOnClickListener {
-            HostSourceRefreshDialog(context!!) {
+            HostSourceRefreshDialog(context!!,runRefresh =  {
                 if(context!!.isServiceRunning(RuleImportService::class.java)) {
                     context!!.startService(Intent(context!!, RuleImportService::class.java).putExtra("abort", true))
                 } else {
@@ -127,7 +135,37 @@ class DnsRuleFragment : Fragment() {
                     refreshProgress.show()
                     refreshProgressShown = true
                 }
-            }.show()
+            }, refreshConfigChanged = {
+                getPreferences().apply {
+                    val constraints = Constraints.Builder()
+                        .setRequiresStorageNotLow(true)
+                        .setRequiresBatteryNotLow(true)
+                        .setRequiredNetworkType(if (this.automaticHostRefreshWifiOnly) NetworkType.UNMETERED else NetworkType.CONNECTED)
+                        .build()
+                    val mappedTimeAmount = automaticHostRefreshTimeAmount.let {
+                        if (automaticHostRefreshTimeUnit == HostSourceRefreshDialog.TimeUnit.WEEKS) it * 7
+                        else it
+                    }.toLong()
+                    val mappedTimeUnit = automaticHostRefreshTimeUnit.let {
+                        when (it) {
+                            HostSourceRefreshDialog.TimeUnit.WEEKS -> TimeUnit.DAYS
+                            HostSourceRefreshDialog.TimeUnit.DAYS -> TimeUnit.DAYS
+                            HostSourceRefreshDialog.TimeUnit.HOURS -> TimeUnit.HOURS
+                        }
+                    }
+                    val workRequest = PeriodicWorkRequest.Builder(RuleImportStartWorker::class.java,
+                        mappedTimeAmount,
+                        mappedTimeUnit)
+                        .setConstraints(constraints)
+                        .setInitialDelay(mappedTimeAmount, mappedTimeUnit)
+                        .addTag("hostSourceRefresh")
+                    WorkManager.getInstance(context!!).apply {
+                        cancelAllWorkByTag("hostSourceRefresh")
+                        enqueue(workRequest.build())
+                    }
+
+                }
+            }).show()
         }
         export.setOnClickListener {
             if (context!!.isServiceRunning(RuleExportService::class.java)) {

app/src/main/java/com/frostnerd/smokescreen/util/worker/RuleImportStartWorker.kt

+package com.frostnerd.smokescreen.util.worker
+
+import android.content.Context
+import android.content.Intent
+import androidx.work.Worker
+import androidx.work.WorkerParameters
+import com.frostnerd.smokescreen.service.RuleImportService
+import com.frostnerd.smokescreen.startForegroundServiceCompat
+
+/*
+ * Copyright (C) 2019 Daniel Wolf (Ch4t4r)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * You can contact the developer at daniel.wolf@frostnerd.com.
+ */
+class RuleImportStartWorker(appContext: Context, workerParams: WorkerParameters)
+    : Worker(appContext, workerParams) {
+    override fun doWork(): Result {
+        applicationContext.startForegroundServiceCompat(Intent(applicationContext, RuleImportService::class.java))
+        return Result.success()
+    }
+
+}
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