add auto update subscriptions with interval

V2rayNG/app/src/main/kotlin/com/v2ray/ang/service/SubscriptionUpdater.kt

@@ -0,0 +1,83 @@
+package com.v2ray.ang.service
+
+import android.Manifest
+import android.annotation.SuppressLint
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Build
+import android.util.Log
+import androidx.core.app.ActivityCompat
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import androidx.work.CoroutineWorker
+import androidx.work.WorkerParameters
+import com.v2ray.ang.AppConfig
+import com.v2ray.ang.R
+import com.v2ray.ang.extension.toast
+import com.v2ray.ang.util.AngConfigManager
+import com.v2ray.ang.util.MmkvManager
+import com.v2ray.ang.util.Utils
+import kotlinx.coroutines.delay
+
+object SubscriptionUpdater {
+
+    const val notificationChannel = "update-subscription-channel"
+
+    class UpdateTask(context: Context, params: WorkerParameters) :
+        CoroutineWorker(context, params) {
+
+        private val notificationManager = NotificationManagerCompat.from(applicationContext)
+        private val notification =
+            NotificationCompat.Builder(applicationContext, notificationChannel)
+
+                .setWhen(0)
+                .setTicker("Update")
+                .setContentTitle("Subscription Update")
+                .setSmallIcon(R.drawable.ic_stat_name)
+                .setCategory(NotificationCompat.CATEGORY_SERVICE)
+                .setPriority(NotificationCompat.PRIORITY_MIN)
+
+        @SuppressLint("MissingPermission")
+        override suspend fun doWork(): Result {
+            Log.d(AppConfig.ANG_PACKAGE, "start updating subscriptions")
+
+
+            val subs = MmkvManager.decodeSubscriptions().filter { it.second.autoUpdate }
+
+            for (i in subs) {
+
+                val subscription = i.second
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    notification.setChannelId(notificationChannel)
+                    val channel =
+                        NotificationChannel(
+                            notificationChannel,
+                            "Subscription Update Service",
+                            NotificationManager.IMPORTANCE_MIN
+                        )
+                    notificationManager.createNotificationChannel(channel)
+                }
+                notificationManager.notify(3, notification.build())
+                Log.d(AppConfig.ANG_PACKAGE, "update: ${subscription.remarks} subscription")
+                val configs = Utils.getUrlContentWithCustomUserAgent(subscription.url)
+                importBatchConfig(configs, i.first)
+                notification.setContentText("Updating ${subscription.remarks}")
+            }
+            notificationManager.cancel(3)
+            return Result.success()
+        }
+    }
+
+    fun importBatchConfig(server: String?, subid: String = "") {
+
+        val append = subid.isNullOrEmpty()
+
+        var count = AngConfigManager.importBatchConfig(server, subid, append)
+        if (count <= 0) {
+            AngConfigManager.importBatchConfig(Utils.decode(server!!), subid, append)
+        }
+    }
+}