background service and push notifications

2026-06-10 14:19:43 +05:00
parent 80bbacc130
commit 05430f043a
6 changed files with 441 additions and 0 deletions
@@ -0,0 +1,174 @@
+package sh.sar.basedbank.service
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Intent
+import android.os.IBinder
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
+import sh.sar.basedbank.BasedBankApp
+import sh.sar.basedbank.R
+import sh.sar.basedbank.api.bml.BmlNotificationsClient
+import sh.sar.basedbank.api.mib.MibActivityHistoryClient
+import sh.sar.basedbank.ui.home.AppNotification
+import sh.sar.basedbank.util.NotificationsCache
+import java.util.concurrent.atomic.AtomicInteger
+
+class NotificationPollingService : Service() {
+
+    private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
+    private val app get() = application as BasedBankApp
+    private val notifIdCounter = AtomicInteger(2000)
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    override fun onCreate() {
+        super.onCreate()
+        createChannels()
+        startForeground(SERVICE_NOTIF_ID, buildServiceNotification())
+        startPolling()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int = START_STICKY
+
+    override fun onDestroy() {
+        scope.cancel()
+        super.onDestroy()
+    }
+
+    private fun startPolling() {
+        scope.launch {
+            while (isActive) {
+                runCatching { poll() }
+                delay(POLL_INTERVAL_MS)
+            }
+        }
+    }
+
+    private suspend fun poll() {
+        pollBml()
+        pollMib()
+    }
+
+    private suspend fun pollBml() {
+        val sessions = app.bmlSessions.toMap()
+        if (sessions.isEmpty()) return
+        val client = BmlNotificationsClient()
+        sessions.forEach { (loginId, session) ->
+            val result = try { client.fetchNotifications(session, loginId, page = 1) }
+                         catch (_: Exception) { return@forEach }
+            if (result.items.isEmpty()) return@forEach
+
+            val cached = NotificationsCache.loadBml(this@NotificationPollingService, loginId)
+            if (cached.isEmpty()) {
+                NotificationsCache.saveBml(this@NotificationPollingService, loginId, result.items)
+                return@forEach
+            }
+            val cachedIds = cached.map { it.id }.toSet()
+            val newItems = result.items.filter { it.id !in cachedIds }
+            if (newItems.isNotEmpty()) {
+                NotificationsCache.saveBml(this@NotificationPollingService, loginId, result.items)
+                val channelId = ensureLoginChannel("BML", loginId)
+                newItems.forEach { postBankNotification(it, channelId) }
+            }
+        }
+    }
+
+    private suspend fun pollMib() {
+        val sessions = app.mibSessions.toMap()
+        if (sessions.isEmpty()) return
+        val client = MibActivityHistoryClient()
+        sessions.forEach { (loginId, session) ->
+            val result = try { client.fetchActivity(session, loginId, 1, 100) }
+                         catch (_: Exception) { return@forEach }
+
+            val readIds = NotificationsCache.getMibReadIds(this@NotificationPollingService)
+            val cached = NotificationsCache.loadMib(this@NotificationPollingService, loginId, readIds)
+            if (cached.isEmpty()) {
+                NotificationsCache.saveMib(this@NotificationPollingService, loginId, result.items)
+                return@forEach
+            }
+            val cachedIds = cached.map { it.id }.toSet()
+            val newItems = result.items.filter { it.id !in cachedIds }
+            if (newItems.isNotEmpty()) {
+                val all = (cached + newItems).sortedByDescending { it.timestampMs }
+                NotificationsCache.saveMib(this@NotificationPollingService, loginId, all)
+                val channelId = ensureLoginChannel("MIB", loginId)
+                newItems.forEach { postBankNotification(it, channelId) }
+            }
+        }
+    }
+
+    private fun ensureLoginChannel(bank: String, loginId: String): String {
+        val channelId = "bank_${bank.lowercase()}_$loginId"
+        val nm = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        if (nm.getNotificationChannel(channelId) == null) {
+            val profileName = when (bank) {
+                "BML" -> app.bmlProfilesMap[loginId]?.firstOrNull()?.name
+                "MIB" -> app.mibProfilesMap[loginId]?.firstOrNull()?.name
+                else  -> null
+            } ?: loginId
+            nm.createNotificationChannel(
+                NotificationChannel(channelId, "$bank · $profileName", NotificationManager.IMPORTANCE_DEFAULT)
+            )
+        }
+        return channelId
+    }
+
+    private fun postBankNotification(notif: AppNotification, channelId: String) {
+        val nm = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        val pi = PendingIntent.getActivity(
+            this, 0,
+            packageManager.getLaunchIntentForPackage(packageName),
+            PendingIntent.FLAG_IMMUTABLE
+        )
+        val n = Notification.Builder(this, channelId)
+            .setSmallIcon(R.drawable.ic_bell)
+            .setContentTitle(notif.title)
+            .setContentText(notif.message)
+            .setContentIntent(pi)
+            .setAutoCancel(true)
+            .build()
+        nm.notify(notifIdCounter.getAndIncrement(), n)
+    }
+
+    private fun buildServiceNotification(): Notification {
+        val pi = PendingIntent.getActivity(
+            this, 0,
+            packageManager.getLaunchIntentForPackage(packageName),
+            PendingIntent.FLAG_IMMUTABLE
+        )
+        return Notification.Builder(this, CHANNEL_SERVICE)
+            .setSmallIcon(R.drawable.ic_bell)
+            .setContentTitle(getString(R.string.notif_service_title))
+            .setContentText(getString(R.string.notif_service_desc))
+            .setContentIntent(pi)
+            .setOngoing(true)
+            .build()
+    }
+
+    private fun createChannels() {
+        val nm = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        nm.createNotificationChannel(
+            NotificationChannel(
+                CHANNEL_SERVICE,
+                getString(R.string.notif_channel_service),
+                NotificationManager.IMPORTANCE_MIN
+            ).apply { setShowBadge(false) }
+        )
+    }
+
+    companion object {
+        private const val POLL_INTERVAL_MS = 30_000L
+        private const val SERVICE_NOTIF_ID = 1001
+        const val CHANNEL_SERVICE = "notif_polling_service"
+    }
+}
@@ -27,6 +27,7 @@ class SettingsFragment : Fragment() {
        SettingsItem(R.drawable.ic_contacts,            R.string.settings_logins,          R.string.settings_desc_logins)           { SettingsLoginsFragment() },
        SettingsItem(R.drawable.ic_settings_appearance, R.string.settings_appearance,       R.string.settings_desc_appearance)       { SettingsAppearanceFragment() },
        SettingsItem(R.drawable.ic_lock,                R.string.settings_privacy_security, R.string.settings_desc_privacy_security) { SettingsSecurityFragment() },
+        SettingsItem(R.drawable.ic_bell,                R.string.settings_notifications,    R.string.settings_desc_notifications)    { SettingsNotificationsFragment() },
        SettingsItem(R.drawable.ic_settings_storage,    R.string.settings_storage,          R.string.settings_desc_storage)          { SettingsStorageFragment() },
        SettingsItem(R.drawable.ic_info,                R.string.settings_about,             R.string.settings_desc_about)            { SettingsAboutFragment() },
    )
@@ -0,0 +1,203 @@
+package sh.sar.basedbank.ui.home
+
+import android.Manifest
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Color
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.os.PowerManager
+import android.provider.Settings
+import android.view.Gravity
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.LinearLayout
+import android.widget.ScrollView
+import android.widget.TextView
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.widget.SwitchCompat
+import androidx.core.content.ContextCompat
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.fragment.app.Fragment
+import com.google.android.material.color.MaterialColors
+import sh.sar.basedbank.R
+import sh.sar.basedbank.service.NotificationPollingService
+
+class SettingsNotificationsFragment : Fragment() {
+
+    private var switchView: SwitchCompat? = null
+
+    // Step 1: notification permission — on grant, proceed to battery opt check
+    private val permissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { granted ->
+        if (granted) checkBatteryOptimization() else switchView?.isChecked = false
+    }
+
+    // Step 2: battery optimization — proceed to enableService regardless of user choice
+    private val batteryOptLauncher = registerForActivityResult(
+        ActivityResultContracts.StartActivityForResult()
+    ) {
+        enableService()
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        val ctx = requireContext()
+        val dp = ctx.resources.displayMetrics.density
+        val prefs = ctx.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+
+        val scroll = ScrollView(ctx).apply { clipToPadding = false }
+
+        val col = LinearLayout(ctx).apply {
+            orientation = LinearLayout.VERTICAL
+            layoutParams = ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
+            val p = (20 * dp).toInt()
+            setPadding(p, p, p, p)
+        }
+
+        // Section header
+        col.addView(TextView(ctx).apply {
+            setText(R.string.settings_notif_section)
+            setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_LabelMedium)
+            setTextColor(MaterialColors.getColor(this, com.google.android.material.R.attr.colorPrimary, Color.CYAN))
+            setPadding(0, 0, 0, (12 * dp).toInt())
+        })
+
+        // Enable toggle row
+        val sw = SwitchCompat(ctx).apply {
+            isChecked = prefs.getBoolean(PREF_ENABLED, false)
+        }
+        switchView = sw
+        sw.setOnCheckedChangeListener { _, on -> if (on) requestEnableNotifications() else disableService() }
+
+        val toggleRow = LinearLayout(ctx).apply {
+            orientation = LinearLayout.HORIZONTAL
+            gravity = Gravity.CENTER_VERTICAL
+            layoutParams = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
+            val vp = (10 * dp).toInt()
+            setPadding(0, vp, 0, vp)
+        }
+        val textCol = LinearLayout(ctx).apply {
+            orientation = LinearLayout.VERTICAL
+            layoutParams = LinearLayout.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT, 1f)
+        }
+        textCol.addView(TextView(ctx).apply {
+            setText(R.string.settings_notif_enable)
+            setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_BodyLarge)
+        })
+        textCol.addView(TextView(ctx).apply {
+            setText(R.string.settings_notif_enable_desc)
+            setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_BodySmall)
+            alpha = 0.65f
+        })
+        toggleRow.addView(textCol)
+        toggleRow.addView(sw.apply {
+            layoutParams = (layoutParams as? LinearLayout.LayoutParams ?: LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT
+            )).also { it.marginStart = (12 * dp).toInt() }
+        })
+        col.addView(toggleRow)
+
+        // Description
+        col.addView(TextView(ctx).apply {
+            setText(R.string.settings_notif_description)
+            setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_BodySmall)
+            alpha = 0.65f
+            setPadding(0, (4 * dp).toInt(), 0, (20 * dp).toInt())
+        })
+
+        // Notification channels nav row — same style as settings menu items
+        val colPad = (20 * dp).toInt()
+        val navRow = inflater.inflate(R.layout.item_more_nav, col, false).apply {
+            layoutParams = (layoutParams as LinearLayout.LayoutParams).apply {
+                marginStart = -colPad
+                marginEnd = -colPad
+                topMargin = (8 * dp).toInt()
+            }
+            findViewById<ImageView>(R.id.ivIcon).setImageResource(R.drawable.ic_bell)
+            findViewById<TextView>(R.id.tvLabel).setText(R.string.settings_notif_open_system)
+            findViewById<TextView>(R.id.tvDescription).setText(R.string.settings_notif_channels_desc)
+            setOnClickListener {
+                startActivity(Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS).apply {
+                    putExtra(Settings.EXTRA_APP_PACKAGE, ctx.packageName)
+                })
+            }
+        }
+        col.addView(navRow)
+
+        scroll.addView(col)
+        return scroll
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        val basePad = view.paddingBottom
+        ViewCompat.setOnApplyWindowInsetsListener(view) { v, insets ->
+            val isBottom = requireContext().getSharedPreferences("prefs", Context.MODE_PRIVATE)
+                .getBoolean("bottom_nav", false)
+            val nav = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(v.paddingLeft, v.paddingTop, v.paddingRight, basePad + if (isBottom) 0 else nav.bottom)
+            insets
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        requireActivity().title = getString(R.string.settings_notifications)
+    }
+
+    override fun onDestroyView() {
+        switchView = null
+        super.onDestroyView()
+    }
+
+    // ── Enable flow ───────────────────────────────────────────────────────────────
+
+    private fun requestEnableNotifications() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU &&
+            ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.POST_NOTIFICATIONS)
+                != PackageManager.PERMISSION_GRANTED) {
+            permissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+            return
+        }
+        checkBatteryOptimization()
+    }
+
+    private fun checkBatteryOptimization() {
+        val ctx = requireContext()
+        val pm = ctx.getSystemService(Context.POWER_SERVICE) as PowerManager
+        if (!pm.isIgnoringBatteryOptimizations(ctx.packageName)) {
+            batteryOptLauncher.launch(
+                Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS).apply {
+                    data = Uri.parse("package:${ctx.packageName}")
+                }
+            )
+            return
+        }
+        enableService()
+    }
+
+    private fun enableService() {
+        val ctx = requireContext()
+        ctx.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .edit().putBoolean(PREF_ENABLED, true).apply()
+        ctx.startForegroundService(Intent(ctx, NotificationPollingService::class.java))
+        switchView?.isChecked = true
+    }
+
+    private fun disableService() {
+        val ctx = requireContext()
+        ctx.getSharedPreferences("prefs", Context.MODE_PRIVATE)
+            .edit().putBoolean(PREF_ENABLED, false).apply()
+        ctx.stopService(Intent(ctx, NotificationPollingService::class.java))
+        switchView?.isChecked = false
+    }
+
+    companion object {
+        const val PREF_ENABLED = "notifications_enabled"
+    }
+}