plan.txt

# Exam Scheduling Generator Application Plan

## Overview
Create a comprehensive GUI application for teachers to generate and manage exam schedules. The application will build upon the existing constraint programming approach but add more features and a user-friendly interface.

## Core Features
1. Course/Subject Management
   - [✓] Add/edit/delete subjects with details (course code, name, type, semester, etc.)
   - [✓] Assign subjects to semesters
   - [✓] Import/export subject lists

2. Exam Schedule Generation
   - [✓] Generate optimized exam schedules using constraint programming
   - [✓] Configure exam parameters (start date, exam types, gap between exams)
   - [✓] Room allocation for exams
   - [✓] Handle different exam types (theory, practical, internal, external)
   - [✓] Skip scheduling exams on Sundays

3. Schedule Visualization
   - [✓] Calendar view of the generated schedule
   - [✓] List view with filtering options
   - [✓] Visual indicators for potential conflicts
   - [✓] Edit existing schedule items
   - [✓] Add new items to existing schedules

4. Export Options
   - [✓] Export to PDF
   - [✓] Export to CSV format
   - [✓] Print functionality (via PDF)

## Technical Implementation

### Phase 1: Basic Setup and UI Framework
- [✓] Set up the project structure
- [✓] Create the main application window using tkinter
- [✓] Implement navigation between different sections
- [✓] Design the basic UI components

### Phase 2: Subject Management Module
- [✓] Create database schema for subjects
- [✓] Implement UI for adding/editing subjects
- [✓] Add functionality to assign subjects to semesters
- [✓] Implement import/export functionality

### Phase 3: Schedule Generation Algorithm
- [✓] Port the constraint programming algorithm from the notebook
- [✓] Enhance the algorithm with additional constraints and options
- [✓] Implement progress tracking during generation
- [✓] Add error handling and suggestions for constraint resolution

### Phase 4: Database Implementation
- [✓] Migrate from SQLite to MySQL database
- [✓] Create proper database connection handling
- [✓] Implement error handling for database operations
- [✓] Create configuration file for database credentials

### Phase 5: Schedule Visualization and Editing
- [✓] Implement calendar view for the schedule
- [✓] Create detailed list view with sorting/filtering
- [✓] Add conflict detection and visualization
- [✓] Implement schedule editing capabilities
- [✓] Add functionality to manually add new exam items to schedules

### Phase 6: Export and Reporting
- [✓] Implement PDF export with customizable templates
- [✓] Add CSV export functionality
- [✓] Create print-friendly views
- [✓] Add schedule sharing options

### Phase 7: Final Touches
- [✓] Add user preferences and settings
- [✓] Implement data backup and restore
- [✓] Add help documentation
- [✓] Polish UI and improve user experience

## Technologies
- Python 3.x
- tkinter for GUI
- OR-Tools for constraint programming
- MySQL for local database
- Pandas for data manipulation
- ReportLab for PDF generation
- Matplotlib for visualizations

## Timeline
- Phase 1: 1 day ✓
- Phase 2: 1-2 days ✓
- Phase 3: 2-3 days ✓
- Phase 4: 1-2 days ✓
- Phase 5: 1 day ✓
- Phase 6: 1 day ✓
- Phase 7: 1 day ✓

Total estimated time: 7-10 days for complete implementation ✓

## Completed Features
- [✓] MySQL database integration with configuration file
- [✓] Skip Sunday scheduling feature
- [✓] Edit functionality for schedule items
- [✓] Add functionality for manually adding exam items to schedules
- [✓] Export to CSV and PDF
- [✓] Context menu for deleting schedule items
- [✓] Zoom functionality in View menu (zoom in, zoom out, reset zoom)
- [✓] Font selection in Edit menu
- [✓] Status bar toggle in View menu
- [✓] Tools menu with quick access to common applications (Notepad, Calculator, etc.)
- [✓] Keyboard shortcuts for all menu items
- [✓] Enhanced About dialog with logo
- [✓] Refresh functionality to reload data
- [✓] Export options for rooms and subjects
- [✓] Room IDs included in PDF exports
- [✓] Proper navigation between tabs
- [✓] Version updated to 2.0.0
- [✓] Comprehensive Help documentation with tabbed interface
- [✓] Form reset functionality for new schedules
- [✓] Calendar and list views for schedules
- [✓] Theme customization with 12 different visual themes
- [✓] Preferences dialog for database and application settings
- [✓] Fixed navigation when opening existing schedules
- [✓] Proper storage and retrieval of schedule items from database
- [✓] Screenshots added to documentation