# Daily Notification Plugin - Task TODO List

## Project Overview
**Objective**: Build an offline-first daily notifications system for Android (Kotlin) and iOS (Swift) that follows the **Prefetch → Cache → Schedule → Display** pipeline without requiring network at display time.

**Priority**: Reliability over richness

## Phase 1: Foundation (Week 1) - HIGH PRIORITY

### 1.1 Restore Android Implementation
- [ ] Create native Android plugin structure
- [ ] Implement WorkManager for background content fetching
- [ ] Add AlarmManager for notification scheduling
- [ ] Create notification channels and permissions
- [ ] Implement battery optimization handling
- [ ] Add proper error handling and logging

### 1.2 Fix Interface Definitions
- [ ] Align TypeScript interfaces with project requirements
- [ ] Add missing properties referenced in tests
- [ ] Implement proper validation utilities
- [ ] Create comprehensive error types
- [ ] Add retry mechanism interfaces

### 1.3 Fix Test Suite
- [ ] Update all test files to match current interfaces
- [ ] Implement proper mock objects
- [ ] Fix TypeScript compilation errors
- [ ] Ensure 100% test coverage
- [ ] Add integration tests for native platforms

## Phase 2: Core Pipeline Implementation (Week 2) - HIGH PRIORITY

### 2.1 Prefetch System
- [ ] Implement background content fetching
- [ ] Add network timeout handling (30s max)
- [ ] Create content validation system
- [ ] Implement retry mechanisms with exponential backoff
- [ ] Add network state monitoring

### 2.2 Caching Layer
- [ ] Create local storage for notifications
- [ ] Implement cache eviction policies (LRU)
- [ ] Add offline content management
- [ ] Create cache quota management
- [ ] Implement cache versioning

### 2.3 Enhanced Scheduling
- [ ] Implement reliable notification delivery
- [ ] Add platform-specific optimizations
- [ ] Handle battery optimization settings
- [ ] Create adaptive scheduling based on device state
- [ ] Add quiet hours support

## Phase 3: Production Features (Week 3) - MEDIUM PRIORITY

### 3.1 Fallback System
- [ ] Implement emergency content rotation
- [ ] Add stale content marking ("from X ago")
- [ ] Create graceful degradation paths
- [ ] Implement last-known-good fallback
- [ ] Add offline fallback content

### 3.2 Metrics & Monitoring
- [ ] Create local analytics collection
- [ ] Implement performance monitoring
- [ ] Add error tracking and reporting
- [ ] Create metrics dashboard
- [ ] Implement user engagement tracking

### 3.3 Security & Privacy
- [ ] Add input validation for all user inputs
- [ ] Implement secure storage for sensitive data
- [ ] Create proper permission handling
- [ ] Add network security (HTTPS, certificate pinning)
- [ ] Implement audit logging

## Phase 4: Advanced Features (Week 4) - LOW PRIORITY

### 4.1 User Experience
- [ ] Create onboarding flow
- [ ] Add permission request handling
- [ ] Implement time picker interface
- [ ] Add test notification functionality
- [ ] Create troubleshooting guides

### 4.2 Platform Optimizations
- [ ] Android: OEM battery settings education
- [ ] iOS: Focus/Summary mode handling
- [ ] Web: Service worker implementation
- [ ] Cross-platform synchronization
- [ ] Performance optimization

### 4.3 Enterprise Features
- [ ] Multi-tenant support
- [ ] Advanced analytics
- [ ] Custom notification templates
- [ ] Integration with external services
- [ ] A/B testing support

## Technical Requirements

### Android Implementation
- [ ] Use WorkManager for background tasks
- [ ] Implement AlarmManager for exact scheduling
- [ ] Create notification channels with high importance
- [ ] Handle SCHEDULE_EXACT_ALARM permission
- [ ] Add battery optimization exemption requests

### iOS Implementation
- [ ] Use BGTaskScheduler for background refresh
- [ ] Implement UNCalendarNotificationTrigger
- [ ] Create DAILY_UPDATE notification category
- [ ] Handle Background App Refresh settings
- [ ] Add Focus/Summary mode support

### Data Model
- [ ] Implement NotificationContent v1 schema
- [ ] Add versioning support
- [ ] Create storage abstraction layers
- [ ] Implement cache policies
- [ ] Add analytics event tracking

## Testing Requirements

### Unit Tests
- [ ] Fallback when fetch fails
- [ ] Exact vs inexact scheduling path selection
- [ ] Metrics recording for each stage
- [ ] Cache eviction policies
- [ ] Error handling scenarios

### Integration Tests
- [ ] Android foreground/background/killed scenarios
- [ ] iOS background/Low Power/Focus modes
- [ ] Offline at trigger time
- [ ] Battery saver mode handling
- [ ] Network state changes

### Performance Tests
- [ ] Memory usage monitoring
- [ ] Battery impact measurement
- [ ] Notification delivery latency
- [ ] Cache performance
- [ ] Background task efficiency

## Documentation Requirements

### API Documentation
- [ ] Complete method documentation
- [ ] Usage examples for each platform
- [ ] Error handling guides
- [ ] Performance optimization tips
- [ ] Troubleshooting playbook

### User Guides
- [ ] Installation instructions
- [ ] Configuration guide
- [ ] Platform-specific setup
- [ ] Battery optimization tips
- [ ] Common issues and solutions

## Security Checklist

- [ ] Input validation for all parameters
- [ ] Secure storage implementation
- [ ] Permission handling
- [ ] Network security
- [ ] Error handling without information leakage
- [ ] Audit logging
- [ ] Privacy compliance
- [ ] Secure defaults

## Definition of Done

- [ ] Notifications deliver daily at user-selected time without network
- [ ] Graceful fallback chain proven by tests
- [ ] Metrics recorded locally and viewable
- [ ] Clear onboarding and self-diagnostic screen
- [ ] Battery/OS constraints documented
- [ ] User education available for platform-specific settings

## Current Status

**Build Status**: ✅ Working
**Test Status**: ❌ 13/13 tests failing
**Android Implementation**: ❌ Missing
**iOS Implementation**: ✅ Basic implementation exists
**Web Implementation**: ⚠️ Placeholder only
**Core Pipeline**: ❌ Not implemented

## Next Immediate Actions

1. **Start Android Implementation** - Create native plugin structure
2. **Fix Interface Definitions** - Align with project requirements
3. **Update Test Suite** - Fix compilation errors and implement mocks
4. **Implement Core Pipeline** - Begin prefetch → cache → schedule → display flow

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**Last Updated**: December 2024
**Author**: Matthew Raymer
**Priority**: High - Foundation work needed before advanced features