feat: Phase 4 - Notification Channel Testing

[hossain-khan]

Overview

Phase 4 of the Developer Portal implementation adds Notification Channel Testing - individual test buttons for each of the 6 supported notification channels with real-time feedback and configuration status.

Changes

New Features

✅ Notification Channel Testing Card with per-channel controls:

• 📧 Email (Mailgun) - Test button with configuration status
• 📱 Telegram - Direct bot API testing
• 📞 Twilio (SMS) - SMS delivery testing
• 💬 Slack Workflow - Webhook testing
• 🎮 Discord - Rich embed webhook testing
• 🔗 REST Webhook - Generic webhook testing

User Experience

• ✅ Visual indicators for configured vs unconfigured channels
• ✅ Individual "Test" button for each channel
• ✅ Loading indicators during test execution
• ✅ Success/failure feedback per channel
• ✅ Persistent test results (✓ Test passed / ✗ Test failed)
• ✅ Disabled state for unconfigured channels
• ✅ Snackbar notifications with detailed results

Technical Implementation

State Management:

• Added testingChannel: NotifierType? - tracks actively testing channel
• Added channelTestResults: Map<NotifierType, Boolean?> - stores test outcomes
• Added configuredChannels: Set<NotifierType> - identifies configured channels

Event Handling:

• New TestNotificationChannel(channelType: NotifierType) event
• Sends test battery alert (15% level) to selected channel
• Uses actual NotificationSender implementations
• Proper error handling and logging

UI Components:

• NotificationChannelTestingCard composable
• Per-channel rows with emoji icons
• Responsive layout with configuration badges
• Integrated with existing Circuit architecture

Testing

• ✅ ./gradlew compileDebugKotlin - Compilation successful
• ✅ ./gradlew lintKotlin - No lint errors (auto-formatted)
• ✅ ./gradlew test - All tests passing (89 tasks)
• ✅ ./gradlew assembleDebug - Debug APK builds successfully

Screenshots

Notification Channel Testing Section:

[📢 Notification Channel Testing]
Test each notification channel individually

📧 Email                    [Test]
   ✓ Test passed

📱 Telegram                 [Test]
   ✗ Test failed

📞 Twilio                   [Test]
   Not configured

💬 Slack                    [Test]

🎮 Discord                  [Test]

🔗 Webhook                  [Test]

Code Example

// Testing a channel
when (event) {
    is TestNotificationChannel -> {
        val notifier = notifiers.firstOrNull { 
            it.notifierType == event.channelType 
        }
        
        val testAlert = RemoteAlert.BatteryAlert(
            alertId = -1L,
            batteryPercentage = 20,
            currentBatteryLevel = 15
        )
        
        val result = notifier.sendNotification(testAlert)
        channelTestResults += (event.channelType to result)
    }
}

Benefits

1. Instant Validation - Test each channel immediately after configuration
2. Debugging Aid - Identify channel-specific issues quickly
3. User Confidence - Visual confirmation that channels work
4. Development Efficiency - No need to wait for actual device conditions

Related

• Closes [Dev Portal] Phase 4: Notification Channel Testing #412 (Phase 4 - Notification Channel Testing)
• Part of 🔧 [EPIC] Developer Portal - Debug Testing & Simulation Tools #416 (Developer Portal Epic)
• Follows [Dev Portal] Phase 1: Core Screen Structure Implementation #417 (Phase 1 - merged)
• Follows [Dev Portal] Phase 2: Device Simulation - Battery & Storage Testing #418 (Phase 2 - merged)
• Follows feat: Phase 3 - WorkManager Testing Section (Placeholder) #419 (Phase 3 - merged)

Next Steps

• Phase 5: Alert Configuration & Log Management
• Phase 6: Battery Optimization Testing
• Phase 7: Polish & Documentation

Notes

• Uses LaunchedEffect for async config loading
• Pre-commit hooks auto-formatted code
• All existing functionality remains intact
• No breaking changes

[github-actions]

Code Coverage Report

View Coverage Report

[github-actions]

📊 APK Size Analysis

Comparing main → feature/dev-portal-phase4-notification-testing (this PR)

OLD: base.apk (signature: V2)
NEW: app-release.apk (signature: V2)

          │            compressed             │           uncompressed            
          ├───────────┬───────────┬───────────┼───────────┬───────────┬───────────
 APK      │ old       │ new       │ diff      │ old       │ new       │ diff      
──────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────
      dex │   6.4 MiB │   6.4 MiB │ +10.9 KiB │   6.4 MiB │   6.4 MiB │ +10.9 KiB 
     arsc │ 429.8 KiB │ 429.8 KiB │       0 B │ 429.7 KiB │ 429.7 KiB │       0 B 
 manifest │   3.6 KiB │   3.6 KiB │       0 B │  16.4 KiB │  16.4 KiB │       0 B 
      res │ 160.8 KiB │ 160.8 KiB │       0 B │ 198.5 KiB │ 198.5 KiB │       0 B 
   native │  60.1 KiB │  60.1 KiB │       0 B │  58.9 KiB │  58.9 KiB │       0 B 
    asset │   5.6 KiB │   6.7 KiB │  +1.1 KiB │   5.3 KiB │   6.4 KiB │  +1.1 KiB 
    other │   106 KiB │   106 KiB │      -1 B │ 172.4 KiB │ 172.4 KiB │       0 B 
──────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────
    total │   7.2 MiB │   7.2 MiB │   +12 KiB │   7.3 MiB │   7.3 MiB │   +12 KiB 

 DEX     │ old   │ new   │ diff          
─────────┼───────┼───────┼───────────────
   files │     1 │     1 │   0           
 strings │ 33834 │ 33885 │ +51 (+69 -18) 
   types │  8946 │  8949 │  +3 (+5 -2)   
 classes │  7648 │  7651 │  +3 (+5 -2)   
 methods │ 41184 │ 41228 │ +44 (+86 -42) 
  fields │ 24545 │ 24573 │ +28 (+61 -33) 

 ARSC    │ old │ new │ diff 
─────────┼─────┼─────┼──────
 configs │ 109 │ 109 │  0   
 entries │ 392 │ 392 │  0

APK

     compressed      │    uncompressed     │                                           
─────────┬───────────┼─────────┬───────────┤                                           
 size    │ diff      │ size    │ diff      │ path                                      
─────────┼───────────┼─────────┼───────────┼───────────────────────────────────────────
 6.4 MiB │ +10.9 KiB │ 6.4 MiB │ +10.9 KiB │ ∆ classes.dex                             
 5.8 KiB │  +1.1 KiB │ 5.7 KiB │  +1.1 KiB │ ∆ assets/dexopt/baseline.prof             
   868 B │      -2 B │   736 B │      -2 B │ ∆ assets/dexopt/baseline.profm            
   271 B │      -1 B │   120 B │       0 B │ ∆ META-INF/version-control-info.textproto 
─────────┼───────────┼─────────┼───────────┼───────────────────────────────────────────
 6.4 MiB │   +12 KiB │ 6.4 MiB │   +12 KiB │ (total)

DEX

STRINGS:

   old   │ new   │ diff          
  ───────┼───────┼───────────────
   33834 │ 33885 │ +51 (+69 -18) 
  
  +