# Implementation Plan with Timeline

This document outlines a proposed implementation plan with timeline for the Drinks Inventory System.

## Phase 1: Project Setup and Foundation (Week 1)

### Week 1: Setup and Basic Structure
- **Days 1-2: Project Setup**
  - Set up database connection and configuration
  - Create database schema migration scripts
  - Configure dependency injection container
  - Set up Twig template engine
  - Create base layout template
  - Set up error handling and logging

- **Days 3-5: Entity and Repository Classes**
  - Create all entity classes (DrinkType, InventoryRecord, Order, OrderItem, SystemConfig)
  - Create all repository classes with basic CRUD operations
  - Set up database schema and initial migrations
  - Write unit tests for entities and repositories

## Phase 2: Core Features Implementation (Weeks 2-3)

### Week 2: Drink Type and Inventory Management
- **Days 1-2: Service Layer**
  - Implement DrinkTypeService
  - Implement InventoryService
  - Write unit tests for services

- **Days 3-5: Controllers and Templates**
  - Implement DrinkTypeController with routes
  - Implement InventoryController with routes
  - Create templates for drink type management
  - Create templates for inventory management
  - Write feature tests for controllers

### Week 3: Order Management
- **Days 1-3: Order Management Implementation**
  - Implement OrderService with automatic order calculation
  - Implement OrderController with routes
  - Create templates for order management
  - Write unit and feature tests

- **Days 4-5: Dashboard Implementation**
  - Implement DashboardController
  - Create dashboard template with overview of stock levels
  - Implement low stock alerts
  - Create quick update form for inventory

## Phase 3: Advanced Features and Refinement (Weeks 4-5)

### Week 4: Adaptive Stock Level and Settings
- **Days 1-3: Adaptive Stock Level Adjustment**
  - Implement StockAdjustmentService
  - Implement consumption pattern analysis
  - Implement automatic stock level adjustment
  - Write unit tests for stock adjustment

- **Days 4-5: Settings Implementation**
  - Implement ConfigurationService
  - Implement SettingsController
  - Create settings templates
  - Write tests for configuration

### Week 5: UI Enhancements and Refinement
- **Days 1-3: UI Enhancements**
  - Implement responsive design
  - Add color coding for stock levels
  - Implement mobile-friendly interface
  - Add form validation and error messages
  - Implement loading indicators

- **Days 4-5: Testing and Bug Fixes**
  - Conduct comprehensive testing
  - Fix identified bugs
  - Optimize performance
  - Refine user experience

## Phase 4: Documentation and Deployment (Week 6)

### Week 6: Documentation and Deployment
- **Days 1-3: Documentation**
  - Create user documentation
  - Document API endpoints
  - Document configuration options
  - Update technical documentation

- **Days 4-5: Deployment**
  - Set up production environment
  - Configure database for production
  - Set up backup system
  - Configure error logging for production
  - Perform final testing in production environment

## Development Approach

### Iterative Development
- Each feature will be developed following these steps:
  1. Implement entity and repository classes
  2. Implement service layer with business logic
  3. Implement controller with routes
  4. Create templates and UI components
  5. Write tests
  6. Review and refine

### Testing Strategy
- Unit tests for all entity, repository, and service classes
- Feature tests for controllers and UI flows
- Integration tests for database operations
- Manual testing for UI and user experience

### Code Quality Assurance
- Follow PSR coding standards
- Use static analysis tools (PHPStan, Rector)
- Conduct code reviews
- Maintain high test coverage

## Risk Management

### Potential Risks and Mitigation Strategies
- **Scope Creep**: Strictly adhere to the defined requirements and manage change requests
- **Technical Challenges**: Allocate additional time for complex features
- **Integration Issues**: Implement comprehensive integration testing
- **Performance Issues**: Conduct performance testing early and optimize as needed

## Conclusion

This implementation plan provides a structured approach to developing the Drinks Inventory System over a 6-week period. The phased approach allows for incremental development and testing, ensuring that each component is properly implemented and integrated before moving on to the next phase.