# Implementation Plan

- [x] 1. Set up project structure and configuration
  - Create main AppleScript file with basic structure and configuration properties
  - Define configuration properties for source and destination calendars
  - Set up logging and error handling framework
  - _Requirements: 2.1, 2.2, 5.1_

- [ ] 2. Implement Calendar Manager component
  - [ ] 2.1 Create calendar validation and access functions
    - Write functions to validate calendar account and calendar names exist
    - Implement calendar object retrieval with error handling
    - Create function to list available calendars for debugging
    - _Requirements: 2.1, 2.2, 2.3, 2.4_

  - [ ]* 2.2 Write unit tests for calendar access
    - Create test scenarios for invalid calendar names
    - Test calendar access permission handling
    - _Requirements: 2.3, 2.4_

- [ ] 3. Implement Event Reader component
  - [ ] 3.1 Create current day event retrieval function
    - Write function to get today's date and create date range
    - Implement event query for current day from source calendar
    - Handle different event types (all-day, timed events)
    - _Requirements: 1.1, 3.1, 3.2, 3.3_

  - [ ] 3.2 Implement event property extraction
    - Create function to extract event title, dates, description, location
    - Handle event property access errors gracefully
    - Parse recurring events for current day occurrences
    - _Requirements: 1.3, 6.1, 6.2, 6.3_

  - [ ]* 3.3 Write tests for event reading functionality
    - Test event retrieval with various event types
    - Test property extraction accuracy
    - _Requirements: 1.1, 1.3_

- [ ] 4. Implement Event Processor component
  - [ ] 4.1 Create event comparison and duplicate detection
    - Write function to compare events by title, start date, and start time
    - Implement duplicate detection logic for existing events
    - Handle event matching edge cases
    - _Requirements: 4.1, 4.2_

  - [ ] 4.2 Implement event creation and update functions
    - Create function to add new events to destination calendar
    - Implement event update functionality for modified events
    - Handle event creation errors and property limitations
    - _Requirements: 1.2, 1.3, 4.4, 6.4_

  - [ ]* 4.3 Write tests for event processing
    - Test duplicate detection accuracy
    - Test event creation with various properties
    - _Requirements: 4.1, 4.2, 4.4_

- [ ] 5. Implement Sync Engine component
  - [ ] 5.1 Create main synchronization workflow
    - Implement the main sync function that coordinates all components
    - Add progress tracking and user feedback during sync
    - Handle sync workflow errors and recovery
    - _Requirements: 1.1, 1.2, 5.2, 5.3_

  - [ ] 5.2 Implement cleanup functionality for removed events
    - Create function to identify events in destination not in source
    - Implement event removal from destination calendar
    - Add safety checks to prevent accidental deletions
    - _Requirements: 4.3_

  - [ ] 5.3 Create sync reporting and statistics
    - Implement sync result tracking (created, updated, removed, skipped)
    - Create summary display function with detailed results
    - Add error reporting and logging
    - _Requirements: 5.3, 5.4_

  - [ ]* 5.4 Write integration tests for sync engine
    - Test complete sync workflow with test data
    - Test cleanup functionality accuracy
    - Test error handling and recovery
    - _Requirements: 4.3, 5.3_

- [ ] 6. Implement Logger component
  - [ ] 6.1 Create logging and progress display functions
    - Implement message logging with different severity levels
    - Create progress indicator for sync operations
    - Add user-friendly error message formatting
    - _Requirements: 5.1, 5.2, 5.4_

  - [ ] 6.2 Implement sync summary display
    - Create formatted summary of sync results
    - Display statistics for events processed
    - Show any errors or warnings encountered
    - _Requirements: 5.3, 5.4_

- [ ] 7. Integrate all components and create main script
  - [ ] 7.1 Wire together all components in main execution flow
    - Create main script entry point that calls all components
    - Implement proper error handling and user feedback flow
    - Add configuration validation before sync starts
    - _Requirements: 2.3, 2.4, 5.1_

  - [ ] 7.2 Add user interaction and configuration management
    - Implement user prompts for calendar selection if needed
    - Add configuration validation and error messaging
    - Create user-friendly script execution experience
    - _Requirements: 2.1, 2.2, 2.3, 2.4_

  - [ ]* 7.3 Create comprehensive end-to-end tests
    - Test complete sync workflow with real calendar data
    - Test all error scenarios and edge cases
    - Validate sync accuracy and cleanup functionality
    - _Requirements: 1.1, 1.2, 4.3, 5.3_

- [ ] 8. Finalize and optimize the script
  - [ ] 8.1 Add performance optimizations and error recovery
    - Optimize calendar access and event processing performance
    - Add robust error recovery and rollback capabilities
    - Implement proper resource cleanup and calendar app management
    - _Requirements: 5.4_

  - [ ] 8.2 Create user documentation and usage instructions
    - Write clear instructions for script configuration and usage
    - Document calendar permission requirements
    - Create troubleshooting guide for common issues
    - _Requirements: 2.3, 2.4, 5.4_