# Implementation Plan

## Task Overview
[Brief description of the implementation approach]

## Steering Document Compliance
[How tasks follow structure.md conventions and tech.md patterns]

## Atomic Task Requirements
**Each task must meet these criteria for optimal agent execution:**
- **File Scope**: Touches 1-3 related files maximum
- **Time Boxing**: Completable in 15-30 minutes
- **Single Purpose**: One testable outcome per task
- **Specific Files**: Must specify exact files to create/modify
- **Agent-Friendly**: Clear input/output with minimal context switching

## Task Format Guidelines
- Use checkbox format: `- [ ] Task number. Task description`
- **Specify files**: Always include exact file paths to create/modify
- **Include implementation details** as bullet points
- Reference requirements using: `_Requirements: X.Y, Z.A_`
- Reference existing code to leverage using: `_Leverage: path/to/file.ts, path/to/component.tsx_`
- Focus only on coding tasks (no deployment, user testing, etc.)
- **Avoid broad terms**: No "system", "integration", "complete" in task titles

## Good vs Bad Task Examples
❌ **Bad Examples (Too Broad)**:
- "Implement authentication system" (affects many files, multiple purposes)
- "Add user management features" (vague scope, no file specification)
- "Build complete dashboard" (too large, multiple components)

✅ **Good Examples (Atomic)**:
- "Create User model in models/user.py with email/password fields"
- "Add password hashing utility in utils/auth.py using bcrypt"
- "Create LoginForm component in components/LoginForm.tsx with email/password inputs"

## Tasks

- [ ] 1. Create core interfaces in src/types/feature.ts
  - File: src/types/feature.ts
  - Define TypeScript interfaces for feature data structures
  - Extend existing base interfaces from base.ts
  - Purpose: Establish type safety for feature implementation
  - _Leverage: src/types/base.ts_
  - _Requirements: 1.1_

- [ ] 2. Create base model class in src/models/FeatureModel.ts
  - File: src/models/FeatureModel.ts
  - Implement base model extending BaseModel class
  - Add validation methods using existing validation utilities
  - Purpose: Provide data layer foundation for feature
  - _Leverage: src/models/BaseModel.ts, src/utils/validation.ts_
  - _Requirements: 2.1_

- [ ] 3. Add specific model methods to FeatureModel.ts
  - File: src/models/FeatureModel.ts (continue from task 2)
  - Implement create, update, delete methods
  - Add relationship handling for foreign keys
  - Purpose: Complete model functionality for CRUD operations
  - _Leverage: src/models/BaseModel.ts_
  - _Requirements: 2.2, 2.3_

- [ ] 4. Create model unit tests in tests/models/FeatureModel.test.ts
  - File: tests/models/FeatureModel.test.ts
  - Write tests for model validation and CRUD methods
  - Use existing test utilities and fixtures
  - Purpose: Ensure model reliability and catch regressions
  - _Leverage: tests/helpers/testUtils.ts, tests/fixtures/data.ts_
  - _Requirements: 2.1, 2.2_

- [ ] 5. Create service interface in src/services/IFeatureService.ts
  - File: src/services/IFeatureService.ts
  - Define service contract with method signatures
  - Extend base service interface patterns
  - Purpose: Establish service layer contract for dependency injection
  - _Leverage: src/services/IBaseService.ts_
  - _Requirements: 3.1_

- [ ] 6. Implement feature service in src/services/FeatureService.ts
  - File: src/services/FeatureService.ts
  - Create concrete service implementation using FeatureModel
  - Add error handling with existing error utilities
  - Purpose: Provide business logic layer for feature operations
  - _Leverage: src/services/BaseService.ts, src/utils/errorHandler.ts, src/models/FeatureModel.ts_
  - _Requirements: 3.2_

- [ ] 7. Add service dependency injection in src/utils/di.ts
  - File: src/utils/di.ts (modify existing)
  - Register FeatureService in dependency injection container
  - Configure service lifetime and dependencies
  - Purpose: Enable service injection throughout application
  - _Leverage: existing DI configuration in src/utils/di.ts_
  - _Requirements: 3.1_

- [ ] 8. Create service unit tests in tests/services/FeatureService.test.ts
  - File: tests/services/FeatureService.test.ts
  - Write tests for service methods with mocked dependencies
  - Test error handling scenarios
  - Purpose: Ensure service reliability and proper error handling
  - _Leverage: tests/helpers/testUtils.ts, tests/mocks/modelMocks.ts_
  - _Requirements: 3.2, 3.3_

- [ ] 4. Create API endpoints
  - Design API structure
  - _Leverage: src/api/baseApi.ts, src/utils/apiUtils.ts_
  - _Requirements: 4.0_

- [ ] 4.1 Set up routing and middleware
  - Configure application routes
  - Add authentication middleware
  - Set up error handling middleware
  - _Leverage: src/middleware/auth.ts, src/middleware/errorHandler.ts_
  - _Requirements: 4.1_

- [ ] 4.2 Implement CRUD endpoints
  - Create API endpoints
  - Add request validation
  - Write API integration tests
  - _Leverage: src/controllers/BaseController.ts, src/utils/validation.ts_
  - _Requirements: 4.2, 4.3_

- [ ] 5. Add frontend components
  - Plan component architecture
  - _Leverage: src/components/BaseComponent.tsx, src/styles/theme.ts_
  - _Requirements: 5.0_

- [ ] 5.1 Create base UI components
  - Set up component structure
  - Implement reusable components
  - Add styling and theming
  - _Leverage: src/components/BaseComponent.tsx, src/styles/theme.ts_
  - _Requirements: 5.1_

- [ ] 5.2 Implement feature-specific components
  - Create feature components
  - Add state management
  - Connect to API endpoints
  - _Leverage: src/hooks/useApi.ts, src/components/BaseComponent.tsx_
  - _Requirements: 5.2, 5.3_

- [ ] 6. Integration and testing
  - Plan integration approach
  - _Leverage: src/utils/integrationUtils.ts, tests/helpers/testUtils.ts_
  - _Requirements: 6.0_

- [ ] 6.1 Write end-to-end tests
  - Set up E2E testing framework
  - Write user journey tests
  - Add test automation
  - _Leverage: tests/helpers/testUtils.ts, tests/fixtures/data.ts_
  - _Requirements: All_

- [ ] 6.2 Final integration and cleanup
  - Integrate all components
  - Fix any integration issues
  - Clean up code and documentation
  - _Leverage: src/utils/cleanup.ts, docs/templates/_
  - _Requirements: All_
