# Android Implementation Directive: App Launch Recovery & Missed Alarm Detection

**Author**: Matthew Raymer  
**Date**: November 2025  
**Status**: Active Implementation Directive - Android Only

## Purpose

This directive provides **descriptive overview and integration guidance** for Android-specific gaps identified in the exploration:

1. App Launch Recovery (cold/warm/force-stop)
2. Missed Alarm Detection
3. Force Stop Detection
4. Boot Receiver Missed Alarm Handling

**⚠️ CRITICAL**: This document is **descriptive and integrative**. The **normative implementation instructions** are in the Phase 1–3 directives below. **If any code or behavior in this file conflicts with a Phase directive, the Phase directive wins.**

**Reference**: See [Plugin Requirements](./alarms/03-plugin-requirements.md) for requirements that Phase directives implement.

**Reference**: See [Exploration Findings](./exploration-findings-initial.md) for gap analysis.

**⚠️ IMPORTANT**: For implementation, use the phase-specific directives (these are the canonical source of truth):

- **[Phase 1: Cold Start Recovery](./android-implementation-directive-phase1.md)** - Minimal viable recovery
  - Implements: [Plugin Requirements §3.1.2](./alarms/03-plugin-requirements.md#312-app-cold-start)
  - Explicit acceptance criteria, rollback safety, data integrity checks
  - **Start here** for fastest implementation
  
- **[Phase 2: Force Stop Detection & Recovery](./android-implementation-directive-phase2.md)** - Comprehensive force stop handling
  - Implements: [Plugin Requirements §3.1.4](./alarms/03-plugin-requirements.md#314-force-stop-recovery-android-only)
  - Prerequisite: Phase 1 complete
  
- **[Phase 3: Boot Receiver Missed Alarm Handling](./android-implementation-directive-phase3.md)** - Boot recovery enhancement
  - Implements: [Plugin Requirements §3.1.1](./alarms/03-plugin-requirements.md#311-boot-event-android-only)
  - Prerequisites: Phase 1 and Phase 2 complete

**See Also**: [Unified Alarm Directive](./alarms/000-UNIFIED-ALARM-DIRECTIVE.md) for master coordination document.

---

## 1. Implementation Overview

### 1.1 What Needs to Be Implemented

| Feature | Status | Priority | Location |
| ------- | ------ | -------- | -------- |
| App Launch Recovery | ❌ Missing | **High** | `DailyNotificationPlugin.kt` - `load()` method |
| Missed Alarm Detection | ⚠️ Partial | **High** | `DailyNotificationPlugin.kt` - new method |
| Force Stop Detection | ❌ Missing | **High** | `DailyNotificationPlugin.kt` - recovery logic |
| Boot Receiver Missed Alarms | ⚠️ Partial | **Medium** | `BootReceiver.kt` - `rescheduleNotifications()` |

### 1.2 Implementation Strategy

**Phase 1** – Cold start recovery only
- Missed notification detection + future alarm verification
- No force-stop detection, no boot handling
- **See [Phase 1 directive](./android-implementation-directive-phase1.md) for implementation**

**Phase 2** – Force stop detection & full recovery
- Force stop detection via AlarmManager state comparison
- Comprehensive recovery of all schedules (notify + fetch)
- Past alarms marked as missed, future alarms rescheduled
- **See [Phase 2 directive](./android-implementation-directive-phase2.md) for implementation**

**Phase 3** – Boot receiver missed alarm detection & rescheduling
- Boot receiver detects missed alarms during device reboot
- Next occurrence rescheduled for repeating schedules
- **See [Phase 3 directive](./android-implementation-directive-phase3.md) for implementation**

---

## 2. Implementation: ReactivationManager

**⚠️ Illustrative only** – See Phase 1 and Phase 2 directives for canonical implementation.

**ReactivationManager Responsibilities by Phase**:

| Phase | Responsibilities                                              |
| ----- | ------------------------------------------------------------- |
| 1     | Cold start only (missed detection + verify/reschedule future) |
| 2     | Adds force stop detection & recovery                          |
| 3     | Warm start optimizations (future)                             |

**For implementation details, see:**
- [Phase 1: ReactivationManager creation](./android-implementation-directive-phase1.md#2-implementation-reactivationmanager)
- [Phase 2: Force stop detection](./android-implementation-directive-phase2.md#2-implementation-force-stop-detection)

### 2.1 Create New File

**File**: `android/src/main/java/com/timesafari/dailynotification/ReactivationManager.kt`

**Purpose**: Centralized recovery logic for app launch scenarios

### 2.2 Class Structure

**⚠️ Illustrative only** – See Phase 1 for canonical implementation.

```kotlin
package com.timesafari.dailynotification

import android.app.AlarmManager
import android.content.Context
import android.os.Build
import android.util.Log
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

/**
 * Manages recovery of alarms and notifications on app launch
 * Handles cold start, warm start, and force stop recovery scenarios
 * 
 * @author Matthew Raymer
 * @version 1.0.0
 */
class ReactivationManager(private val context: Context) {
    
    companion object {
        private const val TAG = "DNP-REACTIVATION"
    }
    
    /**
     * Perform recovery on app launch
     * Detects scenario (cold/warm/force-stop) and handles accordingly
     */
    fun performRecovery() {
        CoroutineScope(Dispatchers.IO).launch {
            try {
                Log.i(TAG, "Starting app launch recovery")
                
                // Step 1: Detect scenario
                val scenario = detectScenario()
                Log.i(TAG, "Detected scenario: $scenario")
                
                // Step 2: Handle based on scenario
                when (scenario) {
                    RecoveryScenario.FORCE_STOP -> handleForceStopRecovery()
                    RecoveryScenario.COLD_START -> handleColdStartRecovery()
                    RecoveryScenario.WARM_START -> handleWarmStartRecovery()
                }
                
                Log.i(TAG, "App launch recovery completed")
            } catch (e: Exception) {
                Log.e(TAG, "Error during app launch recovery", e)
            }
        }
    }
    
    // ... implementation methods below ...
}
```

### 2.3 Scenario Detection

**⚠️ Illustrative only** – See Phase 2 for canonical scenario detection implementation.

```kotlin
/**
 * Detect recovery scenario based on AlarmManager state vs database
 */
private suspend fun detectScenario(): RecoveryScenario {
    val db = DailyNotificationDatabase.getDatabase(context)
    val dbSchedules = db.scheduleDao().getEnabled()
    
    if (dbSchedules.isEmpty()) {
        // No schedules in database - normal first launch
        return RecoveryScenario.COLD_START
    }
    
    // Check AlarmManager for active alarms
    val activeAlarmCount = getActiveAlarmCount()
    
    // Force Stop Detection: DB has schedules but AlarmManager has zero
    if (dbSchedules.isNotEmpty() && activeAlarmCount == 0) {
        return RecoveryScenario.FORCE_STOP
    }
    
    // Check if this is warm start (app was in background)
    // For now, treat as cold start - can be enhanced later
    return RecoveryScenario.COLD_START
}

/**
 * Get count of active alarms in AlarmManager
 */
private fun getActiveAlarmCount(): Int {
    return try {
        val alarmManager = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // Use nextAlarmClock as indicator (not perfect, but best available)
            val nextAlarm = alarmManager.nextAlarmClock
            if (nextAlarm != null) {
                // At least one alarm exists
                // Note: This doesn't give exact count, but indicates alarms exist
                return 1 // Assume at least one
            } else {
                return 0
            }
        } else {
            // Pre-Lollipop: Cannot query AlarmManager directly
            // Assume alarms exist if we can't check
            return 1
        }
    } catch (e: Exception) {
        Log.e(TAG, "Error checking active alarm count", e)
        return 0
    }
}

enum class RecoveryScenario {
    COLD_START,
    WARM_START,
    FORCE_STOP
}
```

### 2.4 Force Stop Recovery

**⚠️ Illustrative only** – See Phase 2 for canonical force stop recovery implementation.

```kotlin
/**
 * Handle force stop recovery
 * All alarms were cancelled, need to restore everything
 */
private suspend fun handleForceStopRecovery() {
    Log.i(TAG, "Handling force stop recovery")
    
    val db = DailyNotificationDatabase.getDatabase(context)
    val dbSchedules = db.scheduleDao().getEnabled()
    val currentTime = System.currentTimeMillis()
    
    var missedCount = 0
    var rescheduledCount = 0
    
    dbSchedules.forEach { schedule ->
        try {
            when (schedule.kind) {
                "notify" -> {
                    val nextRunTime = calculateNextRunTime(schedule)
                    
                    if (nextRunTime < currentTime) {
                        // Past alarm - was missed during force stop
                        missedCount++
                        handleMissedAlarm(schedule, nextRunTime)
                        
                        // Reschedule next occurrence if repeating
                        if (isRepeating(schedule)) {
                            val nextOccurrence = calculateNextOccurrence(schedule, currentTime)
                            rescheduleAlarm(schedule, nextOccurrence)
                            rescheduledCount++
                        }
                    } else {
                        // Future alarm - reschedule immediately
                        rescheduleAlarm(schedule, nextRunTime)
                        rescheduledCount++
                    }
                }
                "fetch" -> {
                    // Reschedule fetch work
                    rescheduleFetch(schedule)
                    rescheduledCount++
                }
            }
        } catch (e: Exception) {
            Log.e(TAG, "Error recovering schedule ${schedule.id}", e)
        }
    }
    
    // Record recovery in history
    recordRecoveryHistory(db, "force_stop", missedCount, rescheduledCount)
    
    Log.i(TAG, "Force stop recovery complete: $missedCount missed, $rescheduledCount rescheduled")
}
```

### 2.5 Cold Start Recovery

**⚠️ Illustrative only** – See Phase 1 for canonical cold start recovery implementation.

```kotlin
/**
 * Handle cold start recovery
 * Check for missed alarms and reschedule future ones
 */
private suspend fun handleColdStartRecovery() {
    Log.i(TAG, "Handling cold start recovery")
    
    val db = DailyNotificationDatabase.getDatabase(context)
    val currentTime = System.currentTimeMillis()
    
    // Step 1: Detect missed alarms
    val missedNotifications = db.notificationContentDao()
        .getNotificationsReadyForDelivery(currentTime)
    
    var missedCount = 0
    missedNotifications.forEach { notification ->
        try {
            handleMissedNotification(notification)
            missedCount++
        } catch (e: Exception) {
            Log.e(TAG, "Error handling missed notification ${notification.id}", e)
        }
    }
    
    // Step 2: Reschedule future alarms from database
    val dbSchedules = db.scheduleDao().getEnabled()
    var rescheduledCount = 0
    
    dbSchedules.forEach { schedule ->
        try {
            val nextRunTime = calculateNextRunTime(schedule)
            
            if (nextRunTime >= currentTime) {
                // Future alarm - verify it's scheduled
                if (!isAlarmScheduled(schedule, nextRunTime)) {
                    rescheduleAlarm(schedule, nextRunTime)
                    rescheduledCount++
                }
            }
        } catch (e: Exception) {
            Log.e(TAG, "Error rescheduling schedule ${schedule.id}", e)
        }
    }
    
    // Record recovery in history
    recordRecoveryHistory(db, "cold_start", missedCount, rescheduledCount)
    
    Log.i(TAG, "Cold start recovery complete: $missedCount missed, $rescheduledCount rescheduled")
}
```

### 2.6 Warm Start Recovery

```kotlin
/**
 * Handle warm start recovery
 * Verify active alarms and check for missed ones
 */
private suspend fun handleWarmStartRecovery() {
    Log.i(TAG, "Handling warm start recovery")
    
    // Similar to cold start, but lighter weight
    // Just verify alarms are still scheduled
    val db = DailyNotificationDatabase.getDatabase(context)
    val currentTime = System.currentTimeMillis()
    
    // Check for missed alarms (same as cold start)
    val missedNotifications = db.notificationContentDao()
        .getNotificationsReadyForDelivery(currentTime)
    
    var missedCount = 0
    missedNotifications.forEach { notification ->
        try {
            handleMissedNotification(notification)
            missedCount++
        } catch (e: Exception) {
            Log.e(TAG, "Error handling missed notification ${notification.id}", e)
        }
    }
    
    // Verify active alarms (lighter check than cold start)
    val dbSchedules = db.scheduleDao().getEnabled()
    var verifiedCount = 0
    
    dbSchedules.forEach { schedule ->
        try {
            val nextRunTime = calculateNextRunTime(schedule)
            if (nextRunTime >= currentTime && isAlarmScheduled(schedule, nextRunTime)) {
                verifiedCount++
            }
        } catch (e: Exception) {
            Log.e(TAG, "Error verifying schedule ${schedule.id}", e)
        }
    }
    
    Log.i(TAG, "Warm start recovery complete: $missedCount missed, $verifiedCount verified")
}
```

### 2.7 Helper Methods

```kotlin
/**
 * Handle a missed alarm/notification
 */
private suspend fun handleMissedAlarm(schedule: Schedule, scheduledTime: Long) {
    val db = DailyNotificationDatabase.getDatabase(context)
    
    // Update delivery status
    // Note: This assumes NotificationContentEntity exists for this schedule
    // May need to create if it doesn't exist
    
    // Generate missed alarm event
    // Option 1: Fire callback
    fireMissedAlarmCallback(schedule, scheduledTime)
    
    // Option 2: Generate missed alarm notification
    // generateMissedAlarmNotification(schedule, scheduledTime)
    
    Log.i(TAG, "Handled missed alarm: ${schedule.id} scheduled for $scheduledTime")
}

/**
 * Handle a missed notification (from NotificationContentEntity)
 */
private suspend fun handleMissedNotification(notification: NotificationContentEntity) {
    val db = DailyNotificationDatabase.getDatabase(context)
    
    // Update delivery status
    notification.deliveryStatus = "missed"
    db.notificationContentDao().update(notification)
    
    // Generate missed notification event
    fireMissedNotificationCallback(notification)
    
    Log.i(TAG, "Handled missed notification: ${notification.id}")
}

/**
 * Reschedule an alarm
 */
private suspend fun rescheduleAlarm(schedule: Schedule, nextRunTime: Long) {
    val config = UserNotificationConfig(
        enabled = schedule.enabled,
        schedule = schedule.cron ?: schedule.clockTime ?: "0 9 * * *",
        title = "Daily Notification",
        body = "Your daily update is ready",
        sound = true,
        vibration = true,
        priority = "normal"
    )
    
    NotifyReceiver.scheduleExactNotification(context, nextRunTime, config)
    
    // Update schedule in database
    schedule.nextRunAt = nextRunTime
    val db = DailyNotificationDatabase.getDatabase(context)
    db.scheduleDao().update(schedule)
    
    Log.i(TAG, "Rescheduled alarm: ${schedule.id} for $nextRunTime")
}

/**
 * Check if alarm is scheduled in AlarmManager
 */
private fun isAlarmScheduled(schedule: Schedule, triggerTime: Long): Boolean {
    return NotifyReceiver.isAlarmScheduled(context, triggerTime)
}

/**
 * Calculate next run time from schedule
 */
private fun calculateNextRunTime(schedule: Schedule): Long {
    // Use existing logic from BootReceiver or create new
    // For now, simplified version
    val now = System.currentTimeMillis()
    
    return when {
        schedule.cron != null -> {
            // Parse cron and calculate next run
            // For now, return next day at 9 AM
            now + (24 * 60 * 60 * 1000L)
        }
        schedule.clockTime != null -> {
            // Parse HH:mm and calculate next run
            // For now, return next day at specified time
            now + (24 * 60 * 60 * 1000L)
        }
        schedule.nextRunAt != null -> {
            schedule.nextRunAt
        }
        else -> {
            // Default to next day at 9 AM
            now + (24 * 60 * 60 * 1000L)
        }
    }
}

/**
 * Check if schedule is repeating
 */
private fun isRepeating(schedule: Schedule): Boolean {
    // Check cron or clockTime pattern to determine if repeating
    // For now, assume daily schedules are repeating
    return schedule.cron != null || schedule.clockTime != null
}

/**
 * Calculate next occurrence for repeating schedule
 */
private fun calculateNextOccurrence(schedule: Schedule, fromTime: Long): Long {
    // Calculate next occurrence after fromTime
    // For daily: add 24 hours
    // For weekly: add 7 days
    // etc.
    return fromTime + (24 * 60 * 60 * 1000L) // Simplified: daily
}

/**
 * Reschedule fetch work
 */
private suspend fun rescheduleFetch(schedule: Schedule) {
    val config = ContentFetchConfig(
        enabled = schedule.enabled,
        schedule = schedule.cron ?: schedule.clockTime ?: "0 9 * * *",
        url = null,
        timeout = 30000,
        retryAttempts = 3,
        retryDelay = 1000,
        callbacks = CallbackConfig()
    )
    
    FetchWorker.scheduleFetch(context, config)
    Log.i(TAG, "Rescheduled fetch: ${schedule.id}")
}

/**
 * Record recovery in history
 */
private suspend fun recordRecoveryHistory(
    db: DailyNotificationDatabase,
    scenario: String,
    missedCount: Int,
    rescheduledCount: Int
) {
    try {
        db.historyDao().insert(
            History(
                refId = "recovery_${System.currentTimeMillis()}",
                kind = "recovery",
                occurredAt = System.currentTimeMillis(),
                outcome = "success",
                diagJson = """
                    {
                        "scenario": "$scenario",
                        "missed_count": $missedCount,
                        "rescheduled_count": $rescheduledCount
                    }
                """.trimIndent()
            )
        )
    } catch (e: Exception) {
        Log.e(TAG, "Failed to record recovery history", e)
    }
}

/**
 * Fire missed alarm callback
 */
private suspend fun fireMissedAlarmCallback(schedule: Schedule, scheduledTime: Long) {
    // TODO: Implement callback mechanism
    // This could fire a Capacitor event or call a registered callback
    Log.d(TAG, "Missed alarm callback: ${schedule.id} at $scheduledTime")
}

/**
 * Fire missed notification callback
 */
private suspend fun fireMissedNotificationCallback(notification: NotificationContentEntity) {
    // TODO: Implement callback mechanism
    Log.d(TAG, "Missed notification callback: ${notification.id}")
}
```

---

## 3. Integration: DailyNotificationPlugin

### 3.1 Update `load()` Method

**File**: `android/src/main/java/com/timesafari/dailynotification/DailyNotificationPlugin.kt`

**Location**: Line 91

**Current Code**:
```kotlin
override fun load() {
    super.load()
    try {
        if (context == null) {
            Log.e(TAG, "Context is null, cannot initialize database")
            return
        }
        db = DailyNotificationDatabase.getDatabase(context)
        Log.i(TAG, "Daily Notification Plugin loaded successfully")
    } catch (e: Exception) {
        Log.e(TAG, "Failed to initialize Daily Notification Plugin", e)
    }
}
```

**Updated Code**:
```kotlin
override fun load() {
    super.load()
    try {
        if (context == null) {
            Log.e(TAG, "Context is null, cannot initialize database")
            return
        }
        db = DailyNotificationDatabase.getDatabase(context)
        Log.i(TAG, "Daily Notification Plugin loaded successfully")
        
        // Perform app launch recovery
        val reactivationManager = ReactivationManager(context)
        reactivationManager.performRecovery()
    } catch (e: Exception) {
        Log.e(TAG, "Failed to initialize Daily Notification Plugin", e)
    }
}
```

---

## 4. Enhancement: BootReceiver

**⚠️ Illustrative only** – See Phase 3 directive for canonical boot receiver implementation.

**For implementation details, see [Phase 3: Boot Receiver Enhancement](./android-implementation-directive-phase3.md#2-implementation-bootreceiver-enhancement)**

### 4.1 Update `rescheduleNotifications()` Method

**File**: `android/src/main/java/com/timesafari/dailynotification/BootReceiver.kt`

**Location**: Line 38

**Current Issue**: Only reschedules future alarms (line 64: `if (nextRunTime > System.currentTimeMillis())`)

**Updated Code**:
```kotlin
private suspend fun rescheduleNotifications(context: Context) {
    val db = DailyNotificationDatabase.getDatabase(context)
    val enabledSchedules = db.scheduleDao().getEnabled()
    val currentTime = System.currentTimeMillis()
    
    Log.i(TAG, "Found ${enabledSchedules.size} enabled schedules to reschedule")
    
    var futureRescheduled = 0
    var missedDetected = 0
    
    enabledSchedules.forEach { schedule ->
        try {
            when (schedule.kind) {
                "fetch" -> {
                    // Reschedule WorkManager fetch
                    val config = ContentFetchConfig(
                        enabled = schedule.enabled,
                        schedule = schedule.cron ?: schedule.clockTime ?: "0 9 * * *",
                        url = null,
                        timeout = 30000,
                        retryAttempts = 3,
                        retryDelay = 1000,
                        callbacks = CallbackConfig()
                    )
                    FetchWorker.scheduleFetch(context, config)
                    Log.i(TAG, "Rescheduled fetch for schedule: ${schedule.id}")
                    futureRescheduled++
                }
                "notify" -> {
                    // Reschedule AlarmManager notification
                    val nextRunTime = calculateNextRunTime(schedule)
                    
                    if (nextRunTime > currentTime) {
                        // Future alarm - reschedule
                        val config = UserNotificationConfig(
                            enabled = schedule.enabled,
                            schedule = schedule.cron ?: schedule.clockTime ?: "0 9 * * *",
                            title = "Daily Notification",
                            body = "Your daily update is ready",
                            sound = true,
                            vibration = true,
                            priority = "normal"
                        )
                        NotifyReceiver.scheduleExactNotification(context, nextRunTime, config)
                        Log.i(TAG, "Rescheduled notification for schedule: ${schedule.id}")
                        futureRescheduled++
                    } else {
                        // Past alarm - was missed during reboot
                        missedDetected++
                        handleMissedAlarmOnBoot(context, schedule, nextRunTime)
                        
                        // Reschedule next occurrence if repeating
                        if (isRepeating(schedule)) {
                            val nextOccurrence = calculateNextOccurrence(schedule, currentTime)
                            val config = UserNotificationConfig(
                                enabled = schedule.enabled,
                                schedule = schedule.cron ?: schedule.clockTime ?: "0 9 * * *",
                                title = "Daily Notification",
                                body = "Your daily update is ready",
                                sound = true,
                                vibration = true,
                                priority = "normal"
                            )
                            NotifyReceiver.scheduleExactNotification(context, nextOccurrence, config)
                            Log.i(TAG, "Rescheduled next occurrence for missed alarm: ${schedule.id}")
                            futureRescheduled++
                        }
                    }
                }
                else -> {
                    Log.w(TAG, "Unknown schedule kind: ${schedule.kind}")
                }
            }
        } catch (e: Exception) {
            Log.e(TAG, "Failed to reschedule ${schedule.kind} for ${schedule.id}", e)
        }
    }
    
    // Record boot recovery in history
    try {
        db.historyDao().insert(
            History(
                refId = "boot_recovery_${System.currentTimeMillis()}",
                kind = "boot_recovery",
                occurredAt = System.currentTimeMillis(),
                outcome = "success",
                diagJson = """
                    {
                        "schedules_rescheduled": $futureRescheduled,
                        "missed_detected": $missedDetected
                    }
                """.trimIndent()
            )
        )
    } catch (e: Exception) {
        Log.e(TAG, "Failed to record boot recovery", e)
    }
    
    Log.i(TAG, "Boot recovery complete: $futureRescheduled rescheduled, $missedDetected missed")
}

/**
 * Handle missed alarm detected during boot recovery
 */
private suspend fun handleMissedAlarmOnBoot(
    context: Context,
    schedule: Schedule,
    scheduledTime: Long
) {
    // Option 1: Generate missed alarm notification
    // Option 2: Fire callback
    // Option 3: Update delivery status in database
    
    Log.i(TAG, "Missed alarm detected on boot: ${schedule.id} scheduled for $scheduledTime")
    
    // TODO: Implement missed alarm handling
    // This could generate a notification or fire a callback
}
```

---

## 5. Testing Requirements

**⚠️ Illustrative only** – See Phase 1, Phase 2, and Phase 3 directives for canonical testing procedures.

**For testing details, see:**
- [Phase 1: Testing Requirements](./android-implementation-directive-phase1.md#8-testing-requirements)
- [Phase 2: Testing Requirements](./android-implementation-directive-phase2.md#6-testing-requirements)
- [Phase 3: Testing Requirements](./android-implementation-directive-phase3.md#5-testing-requirements)

### 5.1 Test Setup

**Package Name**: `com.timesafari.dailynotification`

**Test App Location**: `test-apps/android-test-app/`

**Prerequisites**:
- Android device or emulator connected via ADB
- Test app built and installed
- ADB access enabled
- Logcat monitoring capability

**Useful ADB Commands**:
```bash
# Check if device is connected
adb devices

# Install test app
cd test-apps/android-test-app
./gradlew installDebug

# Monitor logs (filter for plugin)
adb logcat | grep -E "DNP|DailyNotification|REACTIVATION|BOOT"

# Clear logs before test
adb logcat -c

# Check scheduled alarms
adb shell dumpsys alarm | grep -i timesafari

# Check WorkManager tasks
adb shell dumpsys jobscheduler | grep -i timesafari
```

---

### 5.2 Test 1: Cold Start Recovery

**Purpose**: Verify plugin detects and handles missed alarms when app is launched after process kill.

**Test Procedure**:

#### Step 1: Schedule Alarm

**Via Test App UI**:
1. Launch test app: `adb shell am start -n com.timesafari.dailynotification/.MainActivity`
2. Click "Test Notification" button
3. Schedule alarm for 4 minutes in future (test app default)
4. Note the scheduled time

**Via ADB (Alternative)**:
```bash
# Launch app
adb shell am start -n com.timesafari.dailynotification/.MainActivity

# Wait for app to load, then use UI to schedule
# Or use monkey to click button (if button ID known)
```

**Verify Alarm Scheduled**:
```bash
# Check AlarmManager
adb shell dumpsys alarm | grep -A 5 -B 5 timesafari

# Check logs for scheduling confirmation
adb logcat -d | grep "DN|SCHEDULE\|DN|ALARM"
```

#### Step 2: Kill App Process (Not Force Stop)

**Important**: Use `am kill` NOT `am force-stop`. This simulates OS memory pressure kill.

```bash
# Kill app process (simulates OS kill)
adb shell am kill com.timesafari.dailynotification

# Verify app is killed
adb shell ps | grep timesafari
# Should return nothing (process killed)

# Verify alarm is still scheduled (should be)
adb shell dumpsys alarm | grep -i timesafari
# Should still show scheduled alarm
```

#### Step 3: Wait for Alarm Time to Pass

```bash
# Wait 5-10 minutes (longer than scheduled alarm time)
# Monitor system time
adb shell date

# Or set a timer and wait
# Alarm was scheduled for 4 minutes, wait 10 minutes total
```

**During Wait Period**:
- Alarm should NOT fire (app process is killed)
- AlarmManager still has the alarm scheduled
- No notification should appear

#### Step 4: Launch App (Cold Start)

```bash
# Launch app (triggers cold start)
adb shell am start -n com.timesafari.dailynotification/.MainActivity

# Monitor logs for recovery
adb logcat -c  # Clear logs first
adb logcat | grep -E "DNP-REACTIVATION|DN|RECOVERY|missed"
```

#### Step 5: Verify Recovery

**Check Logs**:
```bash
# Look for recovery logs
adb logcat -d | grep -E "DNP-REACTIVATION|COLD_START|missed"

# Expected log entries:
# - "Starting app launch recovery"
# - "Detected scenario: COLD_START"
# - "Handling cold start recovery"
# - "Handled missed notification: <id>"
# - "Cold start recovery complete: X missed, Y rescheduled"
```

**Check Database**:
```bash
# Query database for missed notifications (requires root or debug build)
# Or check via test app UI if status display shows missed alarms
```

**Expected Results**:
- ✅ Plugin detects missed alarm
- ✅ Missed alarm event/notification generated
- ✅ Future alarms rescheduled
- ✅ Recovery logged in history

**Pass/Fail Criteria**:
- **Pass**: Logs show "missed" detection and recovery completion
- **Fail**: No recovery logs, or recovery doesn't detect missed alarm

---

### 5.3 Test 2: Force Stop Recovery

**Purpose**: Verify plugin detects force stop scenario and recovers ALL alarms (missed and future).

**Test Procedure**:

#### Step 1: Schedule Multiple Alarms

**Via Test App UI**:
1. Launch app: `adb shell am start -n com.timesafari.dailynotification/.MainActivity`
2. Schedule alarm #1 for 2 minutes in future
3. Schedule alarm #2 for 5 minutes in future
4. Schedule alarm #3 for 10 minutes in future
5. Note all scheduled times

**Verify Alarms Scheduled**:
```bash
# Check AlarmManager
adb shell dumpsys alarm | grep -A 10 timesafari

# Check logs
adb logcat -d | grep "DN|SCHEDULE"
```

#### Step 2: Force Stop App

**Important**: Use `am force-stop` to trigger hard kill.

```bash
# Force stop app (hard kill)
adb shell am force-stop com.timesafari.dailynotification

# Verify app is force-stopped
adb shell ps | grep timesafari
# Should return nothing

# Verify alarms are cancelled
adb shell dumpsys alarm | grep -i timesafari
# Should return nothing (all alarms cancelled)
```

**Expected**: All alarms immediately cancelled by OS.

#### Step 3: Wait Past Scheduled Times

```bash
# Wait 15 minutes (past all scheduled times)
# Monitor time
adb shell date

# During wait: No alarms should fire (all cancelled)
```

#### Step 4: Launch App (Force Stop Recovery)

```bash
# Launch app (triggers force stop recovery)
adb shell am start -n com.timesafari.dailynotification/.MainActivity

# Monitor logs immediately
adb logcat -c
adb logcat | grep -E "DNP-REACTIVATION|FORCE_STOP|missed|rescheduled"
```

#### Step 5: Verify Force Stop Recovery

**Check Logs**:
```bash
# Look for force stop detection
adb logcat -d | grep -E "DNP-REACTIVATION|FORCE_STOP|force_stop"

# Expected log entries:
# - "Starting app launch recovery"
# - "Detected scenario: FORCE_STOP"
# - "Handling force stop recovery"
# - "Missed alarm detected: <id>"
# - "Rescheduled alarm: <id>"
# - "Force stop recovery complete: X missed, Y rescheduled"
```

**Check AlarmManager**:
```bash
# Verify alarms are rescheduled
adb shell dumpsys alarm | grep -A 10 timesafari
# Should show rescheduled alarms
```

**Expected Results**:
- ✅ Plugin detects force stop scenario (DB has alarms, AlarmManager has zero)
- ✅ All past alarms marked as missed
- ✅ All future alarms rescheduled
- ✅ Recovery logged in history

**Pass/Fail Criteria**:
- **Pass**: Logs show "FORCE_STOP" detection and all alarms recovered
- **Fail**: No force stop detection, or alarms not recovered

---

### 5.4 Test 3: Boot Recovery Missed Alarms

**Purpose**: Verify boot receiver detects and handles missed alarms during device reboot.

**Test Procedure**:

#### Step 1: Schedule Alarm Before Reboot

**Via Test App UI**:
1. Launch app: `adb shell am start -n com.timesafari.dailynotification/.MainActivity`
2. Schedule alarm for 5 minutes in future
3. Note scheduled time

**Verify Alarm Scheduled**:
```bash
adb shell dumpsys alarm | grep -A 5 timesafari
```

#### Step 2: Reboot Device

**Emulator**:
```bash
# Reboot emulator
adb reboot

# Wait for reboot to complete (30-60 seconds)
# Monitor with:
adb wait-for-device
adb shell getprop sys.boot_completed
# Wait until returns "1"
```

**Physical Device**:
- Manually reboot device
- Wait for boot to complete
- Reconnect ADB: `adb devices`

#### Step 3: Wait for Alarm Time to Pass

```bash
# After reboot, wait 10 minutes (past scheduled alarm time)
# Do NOT open app during this time

# Monitor system time
adb shell date
```

**During Wait**:
- Boot receiver should have run (check logs after reboot)
- Alarm should NOT fire (was wiped on reboot)
- No notification should appear

#### Step 4: Check Boot Receiver Logs

```bash
# Check logs from boot
adb logcat -d | grep -E "DNP-BOOT|BOOT_COMPLETED|reschedule"

# Expected log entries:
# - "Boot completed, rescheduling notifications"
# - "Found X enabled schedules to reschedule"
# - "Rescheduled notification for schedule: <id>"
# - "Missed alarm detected on boot: <id>"
# - "Boot recovery complete: X rescheduled, Y missed"
```

#### Step 5: Launch App and Verify

```bash
# Launch app to verify state
adb shell am start -n com.timesafari.dailynotification/.MainActivity

# Check if missed alarms were handled
adb logcat -d | grep -E "missed|boot_recovery"
```

**Expected Results**:
- ✅ Boot receiver runs on reboot
- ✅ Boot receiver detects missed alarms (past scheduled time)
- ✅ Missed alarms handled (notification generated or callback fired)
- ✅ Next occurrence rescheduled if repeating
- ✅ Future alarms rescheduled

**Pass/Fail Criteria**:
- **Pass**: Boot receiver logs show missed alarm detection and handling
- **Fail**: Boot receiver doesn't run, or doesn't detect missed alarms

---

### 5.5 Test 4: Warm Start Verification

**Purpose**: Verify plugin checks for missed alarms when app returns from background.

**Test Procedure**:

#### Step 1: Schedule Alarm

**Via Test App UI**:
1. Launch app: `adb shell am start -n com.timesafari.dailynotification/.MainActivity`
2. Schedule alarm for 10 minutes in future
3. Note scheduled time

**Verify Alarm Scheduled**:
```bash
adb shell dumpsys alarm | grep -A 5 timesafari
```

#### Step 2: Put App in Background

```bash
# Press home button (puts app in background)
adb shell input keyevent KEYCODE_HOME

# Verify app is in background
adb shell dumpsys activity activities | grep -A 5 timesafari
# App should be in "stopped" or "paused" state
```

**Alternative**: Use app switcher on device/emulator to swipe away (but don't force stop).

#### Step 3: Wait and Verify Alarm Still Scheduled

```bash
# Wait 2-3 minutes (before alarm time)
# Verify alarm is still scheduled
adb shell dumpsys alarm | grep -A 5 timesafari
# Should still show scheduled alarm

# Verify app process status
adb shell ps | grep timesafari
# Process may still be running (warm start scenario)
```

#### Step 4: Bring App to Foreground

```bash
# Bring app to foreground
adb shell am start -n com.timesafari.dailynotification/.MainActivity

# Monitor logs for warm start recovery
adb logcat -c
adb logcat | grep -E "DNP-REACTIVATION|WARM_START|verified"
```

#### Step 5: Verify Warm Start Recovery

**Check Logs**:
```bash
# Look for warm start recovery
adb logcat -d | grep -E "DNP-REACTIVATION|WARM_START|verified"

# Expected log entries:
# - "Starting app launch recovery"
# - "Detected scenario: WARM_START" (or COLD_START if process was killed)
# - "Handling warm start recovery"
# - "Warm start recovery complete: X missed, Y verified"
```

**Check Alarm Status**:
```bash
# Verify alarm is still scheduled
adb shell dumpsys alarm | grep -A 5 timesafari
# Should still show scheduled alarm
```

**Expected Results**:
- ✅ Plugin checks for missed alarms on warm start
- ✅ Plugin verifies active alarms are still scheduled
- ✅ No false positives (alarm still valid, not marked as missed)

**Pass/Fail Criteria**:
- **Pass**: Logs show verification, alarm still scheduled
- **Fail**: Alarm incorrectly marked as missed, or verification fails

---

### 5.6 Test 5: Swipe from Recents (Alarm Persistence)

**Purpose**: Verify alarms persist and fire even after app is swiped from recents.

**Test Procedure**:

#### Step 1: Schedule Alarm

```bash
# Launch app and schedule alarm for 4 minutes
adb shell am start -n com.timesafari.dailynotification/.MainActivity
# Use UI to schedule alarm
```

#### Step 2: Swipe App from Recents

**Emulator**:
```bash
# Open recent apps
adb shell input keyevent KEYCODE_APP_SWITCH

# Swipe app away (requires manual interaction or automation)
# Or use:
adb shell input swipe 500 1000 500 500  # Swipe up gesture
```

**Physical Device**: Manually swipe app from recent apps list.

#### Step 3: Verify App Process Status

```bash
# Check if process is still running
adb shell ps | grep timesafari
# Process may be killed or still running (OS decision)

# Verify alarm is still scheduled (CRITICAL)
adb shell dumpsys alarm | grep -A 5 timesafari
# Should still show scheduled alarm
```

#### Step 4: Wait for Alarm Time

```bash
# Wait for scheduled alarm time
# Monitor logs
adb logcat -c
adb logcat | grep -E "DN|RECEIVE|DN|NOTIFICATION|DN|WORK"
```

#### Step 5: Verify Alarm Fires

**Check Logs**:
```bash
# Look for alarm firing
adb logcat -d | grep -E "DN|RECEIVE_START|DN|WORK_START|DN|DISPLAY"

# Expected log entries:
# - "DN|RECEIVE_START" (DailyNotificationReceiver triggered)
# - "DN|WORK_START" (WorkManager worker started)
# - "DN|DISPLAY_NOTIF_START" (Notification displayed)
```

**Check Notification**:
- Notification should appear in system notification tray
- App process should be recreated by OS to deliver notification

**Expected Results**:
- ✅ Alarm fires even though app was swiped away
- ✅ App process recreated by OS
- ✅ Notification displayed

**Pass/Fail Criteria**:
- **Pass**: Notification appears, logs show alarm fired
- **Fail**: No notification, or alarm doesn't fire

---

### 5.7 Test 6: Exact Alarm Permission (Android 12+)

**Purpose**: Verify exact alarm permission handling on Android 12+.

**Test Procedure**:

#### Step 1: Revoke Exact Alarm Permission

**Android 12+ (API 31+)**:
```bash
# Check current permission status
adb shell dumpsys package com.timesafari.dailynotification | grep -i "schedule_exact_alarm"

# Revoke permission (requires root or system app)
# Or use Settings UI:
adb shell am start -a android.settings.REQUEST_SCHEDULE_EXACT_ALARM
# Manually revoke in settings
```

**Alternative**: Use test app UI to check permission status.

#### Step 2: Attempt to Schedule Alarm

**Via Test App UI**:
1. Launch app
2. Click "Test Notification"
3. Should trigger permission request flow

**Check Logs**:
```bash
adb logcat -d | grep -E "EXACT_ALARM|permission|SCHEDULE_EXACT"
```

#### Step 3: Grant Permission

**Via Settings**:
```bash
# Open exact alarm settings
adb shell am start -a android.settings.REQUEST_SCHEDULE_EXACT_ALARM

# Or navigate manually:
adb shell am start -a android.settings.APPLICATION_DETAILS_SETTINGS -d package:com.timesafari.dailynotification
```

#### Step 4: Verify Alarm Scheduling

```bash
# Schedule alarm again
# Check if it succeeds
adb logcat -d | grep "DN|SCHEDULE"

# Verify alarm is scheduled
adb shell dumpsys alarm | grep -A 5 timesafari
```

**Expected Results**:
- ✅ Plugin detects missing permission
- ✅ Settings opened automatically
- ✅ After granting, alarm schedules successfully

---

### 5.8 Test Validation Matrix

| Test | Scenario | Expected OS Behavior | Expected Plugin Behavior | Verification Method | Pass Criteria |
| ---- | -------- | -------------------- | ------------------------ | ------------------- | ------------- |
| 1 | Cold Start | N/A | Detect missed alarms | Logs show recovery | ✅ Recovery logs present |
| 2 | Force Stop | Alarms cancelled | Detect force stop, recover all | Logs + AlarmManager check | ✅ All alarms recovered |
| 3 | Boot Recovery | Alarms wiped | Boot receiver reschedules + detects missed | Boot logs | ✅ Boot receiver handles missed |
| 4 | Warm Start | Alarms persist | Verify alarms still scheduled | Logs + AlarmManager check | ✅ Verification logs present |
| 5 | Swipe from Recents | Alarm fires | Alarm fires (OS handles) | Notification appears | ✅ Notification displayed |
| 6 | Exact Alarm Permission | Permission required | Request permission, schedule after grant | Logs + AlarmManager | ✅ Permission flow works |

---

### 5.9 Log Monitoring Commands

**Comprehensive Log Monitoring**:
```bash
# Monitor all plugin-related logs
adb logcat | grep -E "DNP|DailyNotification|REACTIVATION|BOOT|DN\|"

# Monitor recovery specifically
adb logcat | grep -E "REACTIVATION|recovery|missed|reschedule"

# Monitor alarm scheduling
adb logcat | grep -E "DN\|SCHEDULE|DN\|ALARM|setAlarmClock|setExact"

# Monitor notification delivery
adb logcat | grep -E "DN\|RECEIVE|DN\|WORK|DN\|DISPLAY|Notification"

# Save logs to file for analysis
adb logcat -d > recovery_test.log
```

**Filter by Tag**:
```bash
# DNP-REACTIVATION (recovery manager)
adb logcat -s DNP-REACTIVATION

# DNP-BOOT (boot receiver)
adb logcat -s DNP-BOOT

# DailyNotificationWorker
adb logcat -s DailyNotificationWorker

# DailyNotificationReceiver
adb logcat -s DailyNotificationReceiver
```

---

### 5.10 Troubleshooting Test Failures

**If Recovery Doesn't Run**:
```bash
# Check if plugin loaded
adb logcat -d | grep "Daily Notification Plugin loaded"

# Check for errors
adb logcat -d | grep -E "ERROR|Exception|Failed"

# Verify database initialized
adb logcat -d | grep "DailyNotificationDatabase"
```

**If Force Stop Not Detected**:
```bash
# Check AlarmManager state
adb shell dumpsys alarm | grep -c timesafari
# Count should be 0 after force stop

# Check database state
# (Requires database inspection tool or test app UI)
```

**If Missed Alarms Not Detected**:
```bash
# Check database query
adb logcat -d | grep "getNotificationsReadyForDelivery"

# Verify scheduled_time < currentTime
adb shell date +%s
# Compare with alarm scheduled times
```

---

### 5.11 Automated Test Script

**Basic Test Script** (save as `test_recovery.sh`):
```bash
#!/bin/bash

PACKAGE="com.timesafari.dailynotification"
ACTIVITY="${PACKAGE}/.MainActivity"

echo "=== Test 1: Cold Start Recovery ==="
echo "1. Schedule alarm via UI, then run:"
echo "   adb shell am kill $PACKAGE"
echo "2. Wait 10 minutes"
echo "3. Launch app:"
echo "   adb shell am start -n $ACTIVITY"
echo "4. Check logs:"
echo "   adb logcat -d | grep DNP-REACTIVATION"

echo ""
echo "=== Test 2: Force Stop Recovery ==="
echo "1. Schedule alarms via UI"
echo "2. Force stop:"
echo "   adb shell am force-stop $PACKAGE"
echo "3. Wait 15 minutes"
echo "4. Launch app:"
echo "   adb shell am start -n $ACTIVITY"
echo "5. Check logs:"
echo "   adb logcat -d | grep FORCE_STOP"

echo ""
echo "=== Test 3: Boot Recovery ==="
echo "1. Schedule alarm via UI"
echo "2. Reboot:"
echo "   adb reboot"
echo "3. Wait for boot, then 10 minutes"
echo "4. Check boot logs:"
echo "   adb logcat -d | grep DNP-BOOT"
```

**Make executable**: `chmod +x test_recovery.sh`

---

## 6. Implementation Checklist

- [ ] Create `ReactivationManager.kt` file
- [ ] Implement scenario detection
- [ ] Implement force stop recovery
- [ ] Implement cold start recovery
- [ ] Implement warm start recovery
- [ ] Implement missed alarm handling
- [ ] Implement missed notification handling
- [ ] Update `DailyNotificationPlugin.load()` to call recovery
- [ ] Update `BootReceiver.rescheduleNotifications()` to handle missed alarms
- [ ] Add helper methods (calculateNextRunTime, isRepeating, etc.)
- [ ] Add logging for debugging
- [ ] Test cold start recovery
- [ ] Test force stop recovery
- [ ] Test boot recovery missed alarms
- [ ] Test warm start verification

---

## 7. Code References

**Existing Code to Reuse**:
- `NotifyReceiver.scheduleExactNotification()` - Line 92
- `NotifyReceiver.isAlarmScheduled()` - Line 279
- `NotifyReceiver.getNextAlarmTime()` - Line 305
- `FetchWorker.scheduleFetch()` - Line 31
- `NotificationContentDao.getNotificationsReadyForDelivery()` - Line 98
- `BootReceiver.calculateNextRunTime()` - Line 103

**New Code to Create**:
- `ReactivationManager.kt` - New file
- Helper methods in `BootReceiver.kt` - Add to existing file

---

## Related Documentation

- [Exploration Findings](./exploration-findings-initial.md) - Gap analysis
- [Plugin Requirements & Implementation](./plugin-requirements-implementation.md) - Requirements
- [Platform Capability Reference](./platform-capability-reference.md) - Android OS behavior

---

## Notes

- Implementation should be done incrementally
- Test each scenario after implementation
- Log extensively for debugging
- Handle errors gracefully (don't crash on recovery failure)
- Consider performance (recovery should not block app launch)