# Daily Notification Plugin - Development TODO

**Last Updated**: 2025-08-26 11:17:26 UTC  
**Current Branch**: research/notification-plugin-enhancement  
**Status**: 🔄 **RESEARCH & ANALYSIS PHASE**

## 🎯 **NEW REQUIREMENTS ANALYSIS**

### **Callback & API Integration Requirements**

Based on user feedback analysis, the plugin needs enhanced callback mechanisms and dual scheduling methods:

1. **API Callback Integration** - Accept callbacks for external API calls and database storage
2. **Dual Scheduling Methods** - Separate methods for content fetching vs. user notification
3. **Reporting Service Integration** - Support for external reporting and analytics services

### **Current Implementation Gap Analysis**

- ✅ **Basic scheduling**: Single `scheduleDailyNotification` method exists
- ❌ **Callback system**: No callback mechanism for external services
- ❌ **Dual scheduling**: No separation between content fetch and user notification
- ❌ **API integration**: Limited to basic URL fetching without callback support
- ❌ **Database storage**: No callback support for external database operations

---

## 📋 **ENHANCED DEVELOPMENT ROADMAP**

### **Phase 5: Callback & API Integration (NEW PRIORITY)**

**Complexity Level**: 🔴 **HIGH** - Requires significant interface redesign  
**Dependencies**: Current plugin architecture, interface definitions  

#### **Phase 5.1: Callback System Design (Days 1-2)**

**Complexity**: 🔴 **HIGH** - Core architecture changes required

- [ ] **Design callback interface architecture**
  - [ ] Define callback types (API, database, reporting)
  - [ ] Design callback registration system
  - [ ] Implement callback lifecycle management
  - [ ] Add error handling for callback failures
  - [ ] **Estimated Effort**: 8-12 hours

- [ ] **Update interface definitions**
  - [ ] Extend `NotificationOptions` with callback support
  - [ ] Add callback result interfaces
  - [ ] Define callback error handling types
  - [ ] **Estimated Effort**: 4-6 hours

- [ ] **Implement callback registration system**
  - [ ] Create callback registry class
  - [ ] Add callback validation and security
  - [ ] Implement callback execution engine
  - [ ] **Estimated Effort**: 6-8 hours

#### **Phase 5.2: Dual Scheduling Implementation (Days 2-3)**

**Complexity**: 🟡 **MEDIUM** - New method implementations

- [ ] **Implement content fetch scheduling method**
  - [ ] Create `scheduleContentFetch()` method
  - [ ] Add API call callback support
  - [ ] Implement database storage callback
  - [ ] Add retry and fallback mechanisms
  - [ ] **Estimated Effort**: 6-8 hours

- [ ] **Implement user notification scheduling method**
  - [ ] Create `scheduleUserNotification()` method
  - [ ] Add database retrieval callback support
  - [ ] Implement notification display logic
  - [ ] Add user interaction handling
  - [ ] **Estimated Effort**: 6-8 hours

- [ ] **Update existing scheduling method**
  - [ ] Refactor `scheduleDailyNotification()` for backward compatibility
  - [ ] Add deprecation warnings for old usage
  - [ ] Implement migration path for existing users
  - [ ] **Estimated Effort**: 4-6 hours

#### **Phase 5.3: API Integration & Testing (Days 3-4)**

**Complexity**: 🟡 **MEDIUM** - Integration and testing

- [ ] **Implement API callback handlers**
  - [ ] Create HTTP client wrapper with callback support
  - [ ] Add authentication callback support
  - [ ] Implement rate limiting and retry logic
  - [ ] **Estimated Effort**: 6-8 hours

- [ ] **Add database callback support**
  - [ ] Create database operation callback interfaces
  - [ ] Implement transaction support for callbacks
  - [ ] Add rollback mechanisms for failed operations
  - [ ] **Estimated Effort**: 6-8 hours

- [ ] **Create comprehensive test suite**
  - [ ] Add callback execution tests
  - [ ] Test dual scheduling methods
  - [ ] Test API integration scenarios
  - [ ] Test database callback scenarios
  - [ ] **Estimated Effort**: 8-10 hours

#### **Phase 5.4: Documentation & Examples (Day 5)**

**Complexity**: 🟢 **LOW** - Documentation updates

- [ ] **Update API documentation**
  - [ ] Document new callback interfaces
  - [ ] Add dual scheduling method examples
  - [ ] Create migration guide from old API
  - [ ] **Estimated Effort**: 4-6 hours

- [ ] **Create enhanced examples**
  - [ ] Add callback usage examples
  - [ ] Show dual scheduling patterns
  - [ ] Demonstrate API integration scenarios
  - [ ] **Estimated Effort**: 3-4 hours

---

## 🔄 **CURRENT STATUS & COMPLETED WORK**

### **Phase 1: Foundation & Testing - COMPLETED ✅**

- ✅ **Phase 1.1 Restore Android Implementation** - COMPLETE
- ✅ **Phase 1.2 Fix Interface Definitions** - COMPLETE
- ✅ **Phase 1.3 Fix Test Suite** - COMPLETE

### **Phase 2: Core Pipeline Implementation - COMPLETED ✅**

- ✅ **Phase 2.1 Prefetch System** - COMPLETE
- ✅ **Phase 2.2 Caching Layer** - COMPLETE
- ✅ **Phase 2.3 Enhanced Scheduling** - COMPLETE

### **Phase 3: Production Features - COMPLETED ✅**

- ✅ **Phase 3.1 Fallback System** - COMPLETE
- ✅ **Phase 3.2 Metrics & Monitoring** - COMPLETE
- ✅ **Phase 3.3 Security & Privacy** - COMPLETE

### **Phase 4: Advanced Features - COMPLETED ✅**

- ✅ **Phase 4.1 User Experience** - COMPLETE
- ✅ **Phase 4.2 Platform Optimizations** - COMPLETE
- ✅ **Phase 4.3 Enterprise Features** - COMPLETE

---

## 🎯 **IMMEDIATE NEXT ACTIONS**

### **🔄 CURRENT PHASE: Research & Analysis**

1. **Complete callback system design** - Finalize architecture decisions
2. **Create interface mockups** - Design new method signatures
3. **Plan migration strategy** - Ensure backward compatibility
4. **Estimate implementation effort** - Refine time estimates

### **🚀 NEXT PHASE: Implementation Preparation**

1. **Create feature branch** - `feature/callback-api-integration`
2. **Update interface definitions** - Add callback support
3. **Create implementation plan** - Break down into manageable tasks
4. **Set up testing framework** - Prepare for new functionality

---

## 📊 **SUCCESS METRICS & MILESTONES**

### **Phase 5 Success Criteria**

- [ ] **Callback System**: 100% callback execution success rate
- [ ] **Dual Scheduling**: Both methods working independently
- [ ] **API Integration**: Successful external service integration
- [ ] **Database Support**: Reliable callback-based storage operations
- [ ] **Backward Compatibility**: Existing code continues to work
- [ ] **Test Coverage**: 95%+ coverage for new functionality

### **Quality Gates**

- [ ] **Code Review**: All changes reviewed by team
- [ ] **Integration Testing**: End-to-end callback testing
- [ ] **Performance Testing**: No degradation in existing functionality
- [ ] **Security Review**: Callback security validation
- [ ] **Documentation**: Complete API documentation updates

---

## 🔍 **TECHNICAL CONSIDERATIONS**

### **Architecture Decisions Required**

1. **Callback Execution Model**: Synchronous vs. asynchronous execution
2. **Error Handling Strategy**: How to handle callback failures
3. **Security Model**: Callback validation and sandboxing
4. **Performance Impact**: Minimizing overhead of callback system
5. **Platform Compatibility**: Ensuring cross-platform callback support

### **Risk Mitigation**

- **High Complexity**: Break implementation into smaller, testable units
- **Interface Changes**: Maintain backward compatibility with deprecation warnings
- **Performance Impact**: Implement callback batching and optimization
- **Platform Differences**: Create platform-agnostic callback interfaces

---

## 📚 **RESEARCH & REFERENCES**

### **Current Implementation Analysis**

- **Android**: Has basic scheduling with WorkManager integration
- **iOS**: Swift-based implementation with notification handling
- **Web**: Basic browser notification support
- **Interfaces**: Well-defined TypeScript interfaces ready for extension

### **Design Patterns to Consider**

- **Observer Pattern**: For callback registration and execution
- **Strategy Pattern**: For different callback execution strategies
- **Factory Pattern**: For creating different callback types
- **Chain of Responsibility**: For callback execution flow

---

**Status**: 🔄 **RESEARCH & ANALYSIS PHASE** - Analyzing callback and dual scheduling requirements  
**Next Milestone**: Complete callback system design and interface updates  
**Estimated Completion**: 3-5 days for full implementation  
**Priority**: 🔴 **HIGH** - Core functionality enhancement required