# NURALEAGUE - CHANGELOG
# eFootball League Management System
# Developer: Helma JS

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VERSION 3.1 - January 08, 2026
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[FEATURE] Match Format Selection & UI Improvements
- Added Single Round vs Home & Away mode selection
- Single Round: Each team plays once (n×(n-1)÷2 matches)
- Home & Away: Each team plays twice (n×(n-1) matches) - Default
- Match format saved in league settings

UI ENHANCEMENTS:
- Version number (v3.1) now clickable, opens changelog.txt
- Golden gradient border on first 3 matches
- Animated golden shine effect for opening matches
- "Reset to Default" buttons in Manage Spin Entries
- Reset buttons restore entries from config/*.txt files

RESET FUNCTIONALITY:
- Reset Clubs button beside Save Clubs
- Reset National Teams button beside Save National Teams
- Confirmation modal before resetting
- Loads default entries from config files
- Updates cookie storage automatically

TECHNICAL:
- matchFormat stored in league.settings
- Fixture generation logic supports both modes
- Backwards compatible (defaults to 'double' for existing leagues)
- Golden border CSS with animation keyframes
- Fetch API for loading .txt files

IMPROVEMENTS:
- Better match format selection UI with radio buttons
- Clearer descriptions for each mode
- Consistent button styling with gap spacing
- Hover effect on version link

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VERSION 2.9 - January 08, 2026
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[MAJOR UPDATE] Cookie-Based Permanent Storage
- All league data now saved permanently in cookies (10 years expiry)
- Spin entries saved to cookies with .txt fallback for defaults
- No more PHP sessions - full client-side persistence
- Data survives browser restarts and session timeouts
- Custom spin entries (clubs/national) saved permanently

TECHNICAL:
- Cookie: nuraleague_data (league state)
- Cookie: nuraleague_clubs (custom clubs list)
- Cookie: nuraleague_national (custom national teams)
- Automatic save on every action
- Files in config/ directory used as default reference only

STORAGE ARCHITECTURE:
- Priority: Cookie → File → Default
- JSON serialization for complex data structures
- 10 year expiry on all cookies
- Backward compatible with session-based systems

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VERSION 2.8 - January 08, 2026
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[ENHANCEMENT] Planning Phase
- Research on persistent storage solutions
- Evaluation of localStorage vs Cookies vs File storage
- Decision made to implement cookie-based storage
- Architecture planning for v2.9 major update

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VERSION 2.7 - January 08, 2026
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[FEATURE] Enhanced Spinning Wheel Design
- Text now curved along the arc (follows segment curve)
- Dynamic arrow color matching the pointed segment
- Arrow changes color in real-time during spin
- Improved text positioning and readability
- Smoother spin animation with quartic easing
- Longer spin duration (8-10 seconds)
- Slower ending for better UX

IMPROVEMENTS:
- Text follows wheel curvature like professional wheels
- Triangle pointer at top with dynamic segment color
- White border on arrow for better visibility
- Shadow effects on arrow for depth
- Adaptive font sizing per segment

TECHNICAL:
- Canvas drawing optimization
- getCurrentSegmentColor() method
- drawArrow() with dynamic fill color
- Quartic easing: -c * (t * t * t * t - 1) + b

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VERSION 2.6 - January 08, 2026
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[STABILITY] Code Refactoring & Optimization
- Consolidated all previous features
- Code cleanup and documentation
- Performance optimization for rendering
- Memory leak fixes in spin animation
- Established as stable baseline version

IMPROVEMENTS:
- Better variable naming conventions
- Consistent coding style
- Removed deprecated functions
- Optimized DOM manipulation

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VERSION 2.5 - January 08, 2026
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[FEATURE] Improved Spin Wheel & Dynamic Versioning
- Text rotated radially from center outward
- Text properly anchored to center/spin button
- Much smoother spin with slower deceleration at end
- Adaptive font sizing based on text length
- Enhanced shadows for better text visibility

IMPROVEMENTS:
- Dynamic PHP version variable ($version)
- Version display next to subtitle (v2.5)
- Single source of truth for version management
- Footer credit: "By Helma JS"

TECHNICAL:
- Quartic easing function for smoother ending
- Text positioned at 70% radius
- Progressive font resizing (16px → 13px → 11px → 9px)
- Spin duration: 8-10 seconds (increased from 6-9)
- Initial speed: 30-45 (increased from 25-40)

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VERSION 2.4 - January 08, 2026
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[ENHANCEMENT] User Experience Improvements
- Added loading states for better feedback
- Improved modal transitions
- Enhanced button hover effects
- Better error messages
- Responsive design improvements for mobile

UI/UX:
- Smoother modal animations
- Consistent spacing and padding
- Improved color contrast for accessibility
- Better touch targets for mobile users

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VERSION 2.3 - January 08, 2026
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[FEATURE] Navigation Enhancements
- Resume Spin button when navigating away
- Hide Setup menu during spin process
- Smart section visibility management
- Improved tab switching logic

IMPROVEMENTS:
- Conditional navigation rendering
- Better state management
- Prevented accidental navigation during spin
- Save spin progress when switching tabs

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VERSION 2.2 - January 08, 2026
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[MAJOR UPDATE] File-Based Config & Enhanced UX
- Spin entries saved to file system (config/clubs.txt, config/national.txt)
- SweetAlert2 integration for beautiful notifications
- Loading spinners on all submissions
- Double-click prevention on all buttons

FEATURES:
- File-based storage for spin entries
- Toast notifications (top-right corner)
- Loading overlay with "Processing..." message
- Prevent duplicate submissions with isSubmitting flag

TECHNICAL:
- config/ directory auto-created with 0755 permissions
- Default 16 clubs and 16 national teams
- SweetAlert2 v11.7.32 CDN integration
- Async/await with proper error handling
- Mutex-like submission prevention

NOTIFICATIONS:
- Success: Green toast
- Error: Red toast
- Info: Blue toast
- 3 second auto-dismiss
- Hover to pause timer

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VERSION 2.1 - January 08, 2026
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[FEATURE] PHP Versioning & Conditional Navigation
- PHP-based cache busting with version query strings
- Conditional navigation menu visibility
- Teams and Standings hidden until setup complete
- Dynamic nav button display based on league state

IMPROVEMENTS:
- $version variable in index.php
- Automatic versioning on CSS/JS files (?v=2.1)
- Smart menu hiding/showing logic
- Better user flow control
- Prevented access to incomplete sections

TECHNICAL:
- updateNavVisibility() function
- State-based navigation rendering
- Cache busting on all external assets

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VERSION 2.0 - January 08, 2026
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[MAJOR RELEASE] Spin System Implementation

NEW FEATURES:
- Spin wheel system for random team selection
- Two categories: Clubs and National Teams
- Method selection modal (Manual vs Spin)
- Confirmation system after each spin
- Re-spin option available
- Visual spinning animation with canvas

SPIN WHEEL:
- HTML5 Canvas-based rendering
- 10 vibrant colors (purple, pink, orange, green, blue)
- Smooth rotation animation (6-9 seconds)
- Easing function for realistic deceleration
- Dynamic entry removal after selection
- Automatic segment resizing
- White segment borders for clarity
- Shadow effects on text

SPIN FLOW:
1. Create League → Method Selection Modal
2. Choose "Spin System" → Category Selection Modal
3. Select Category (Clubs/National) → Spin Page
4. Spin for each player → Confirmation Modal
5. Confirm or Re-spin → Next player
6. All selected → Generate fixtures automatically

BUG FIXES:
- Fixed "Create League" not prompting method selection modal
- Fixed "Manage Spin Entries" persisting on every page
- Added default spin entries to textarea on load
- Fixed versioning on external files (app.js, style.css, spin.js)

IMPROVEMENTS:
- Method selection modal properly triggers
- Section visibility fixed (no overlap)
- Default clubs and national teams auto-loaded
- Proper cache busting implementation

DEFAULT SPIN ENTRIES:
Clubs: Manchester United, Liverpool, Barcelona, Real Madrid, Bayern Munich,
       PSG, Juventus, AC Milan, Chelsea, Arsenal, Manchester City,
       Atletico Madrid, Inter Milan, Borussia Dortmund, Ajax, Porto

National: Brazil, Argentina, France, Germany, Spain, England, Italy,
          Netherlands, Portugal, Belgium, Uruguay, Croatia, Mexico,
          Colombia, USA, Japan

TECHNICAL:
- spin.js: Complete wheel logic with SpinWheel class
- SpinStorage: Cookie management for entries
- Canvas 500x500px with responsive scaling
- Rotation calculation with trigonometry
- Winner detection at top-center pointer position

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VERSION 1.9 - January 07, 2026
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[ENHANCEMENT] Pre-Spin System Preparation
- Codebase refactoring for spin integration
- Modal system infrastructure
- State management improvements
- Prepared API endpoints for future spin feature

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VERSION 1.8 - January 07, 2026
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[FEATURE] Match Filtering and Search
- Filter fixtures by team name
- Search functionality in standings
- Match status indicators (Played/Upcoming)
- Quick navigation to specific match weeks

IMPROVEMENTS:
- Better table performance with large datasets
- Optimized rendering for 20 teams
- Reduced DOM manipulation overhead

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VERSION 1.7 - January 07, 2026
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[ENHANCEMENT] Standings Display
- Color-coded position indicators
- Top 4 highlighted (Champion's League)
- Bottom 3 highlighted (Relegation)
- Hover effects on table rows
- Sticky header for long tables

UI IMPROVEMENTS:
- Better visual hierarchy
- Gradient background on standings card
- Improved mobile table scrolling

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VERSION 1.6 - January 07, 2026
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[FEATURE] Reset Functionality
- Reset League (full reset with confirmation)
- Reset Matches (keep teams, clear scores)
- Confirmation modals for destructive actions
- Undo prevention with clear warnings

SAFETY:
- Double confirmation required
- Clear warning messages in Indonesian
- Separate buttons for different reset types
- Non-recoverable action warnings

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VERSION 1.5 - January 07, 2026
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[ENHANCEMENT] Fixture Input System
- Text-based score input (0-99)
- Auto-save on blur event
- Input validation (numeric only)
- Visual feedback on save
- Prevent invalid characters

IMPROVEMENTS:
- Better input UX
- Immediate standings update
- No submit button needed
- Focus management

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VERSION 1.4 - January 07, 2026
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[FEATURE] Fixture Display
- Match cards grouped by week
- Home vs Away indicators
- Score input fields
- Match numbering (1st, 2nd, 3rd, etc.)
- Responsive card layout

TECHNICAL:
- getFixturesByLeg() grouping function
- Ordinal number suffixes (st, nd, rd, th)
- Bootstrap card components
- Grid layout for fixtures

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VERSION 1.3 - January 07, 2026
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[FEATURE] Standings Calculation
- Automatic standings recalculation
- Points, wins, draws, losses tracking
- Goal difference calculation
- Goals for and against tracking
- Proper ranking with tiebreakers

ALGORITHM:
1. Points (descending)
2. Goal Difference (descending)
3. Goals For (descending)

TECHNICAL:
- recalculateStandings() function
- Efficient sorting with usort
- Real-time updates on score change

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VERSION 1.2 - January 07, 2026
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[FEATURE] Round Robin Fixture Generation
- Home and Away fixtures (double round-robin)
- Automatic fixture generation
- Unique match IDs
- Leg numbering system
- Fair scheduling algorithm

TECHNICAL:
- generateRoundRobinFixtures() function
- Nested loops for team pairing
- Second leg generation (reversed fixtures)
- uniqid() for fixture IDs

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VERSION 1.1 - January 06, 2026
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[FEATURE] Team Name Input
- Dynamic input field generation
- Team name validation
- Auto-numbering (Team 1, Team 2, etc.)
- Custom team names support
- Form validation

IMPROVEMENTS:
- Better form layout with grid
- Visual feedback on input
- Required field validation

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VERSION 1.0 - January 06, 2026
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[INITIAL RELEASE] Core League Management

FEATURES:
- League setup (2-20 teams)
- Customizable points system
  * Points for Win (default: 3)
  * Points for Draw (default: 1)
  * Points for Loss (default: 0)
- PHP Session storage
- RESTful API architecture

USER INTERFACE:
- Synthwave/Neon theme
- Dark purple background (#1a1625)
- Neon cyan accents (#00f0ff)
- Orbitron font for headers
- Rajdhani font for content
- Responsive design
- Bootstrap 5.3.2 integration

NAVIGATION:
- Tab-based navigation
- Setup section (league creation)
- Active state indicators
- Smooth transitions between sections

TECHNICAL STACK:
- Frontend: HTML5, CSS3, JavaScript (ES6+)
- Backend: PHP 7.4+ with JSON API
- Session: $_SESSION['league']
- Libraries: Bootstrap 5, Google Fonts
- Architecture: API-driven with fetch()

API ENDPOINTS:
- GET /api.php?action=get_state
- POST /api.php (action: create_league)
- POST /api.php (action: save_team_names)
- POST /api.php (action: update_score)
- POST /api.php (action: reset_league)
- POST /api.php (action: reset_matches)

DATA STRUCTURE:
{
  "settings": {
    "numTeams": int,
    "pointsWin": int,
    "pointsDraw": int,
    "pointsLoss": int
  },
  "teams": [],
  "fixtures": [],
  "standings": [],
  "step": "setup|input|view"
}

INITIAL COMMIT:
- Project structure established
- Basic file organization
- Development environment setup

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DEVELOPMENT ROADMAP
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COMPLETED:
✓ v1.0 - Basic league management
✓ v1.1 - Team input system
✓ v1.2 - Fixture generation
✓ v1.3 - Standings calculation
✓ v1.4 - Fixture display
✓ v1.5 - Score input system
✓ v1.6 - Reset functionality
✓ v1.7 - Enhanced standings
✓ v1.8 - Filtering and search
✓ v1.9 - Pre-spin preparation
✓ v2.0 - SPIN SYSTEM (Major milestone)
✓ v2.1 - Versioning system
✓ v2.2 - File config & SweetAlert
✓ v2.3 - Navigation improvements
✓ v2.4 - UX enhancements
✓ v2.5 - Wheel improvements
✓ v2.6 - Code consolidation
✓ v2.7 - Dynamic arrow & curved text
✓ v2.8 - Storage research
✓ v2.9 - Cookie-based storage (Current)

PLANNED (v3.0+):
- Export to PDF/CSV
- Match statistics dashboard
- Top scorers leaderboard
- Head-to-head records
- Multiple concurrent leagues
- League templates
- Custom color schemes
- Tournament bracket mode
- Mobile PWA version
- Multi-language support

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KNOWN ISSUES
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v2.9: None reported
v2.8: Planning phase only
v2.7: None
v2.6: None
v2.5: None
v2.4: Minor: Modal animation lag on slow devices (fixed in v2.5)
v2.3: None
v2.2: None
v2.1: None
v2.0: Initial spin system bugs (all fixed in v2.1)
v1.x: Session timeout issues (resolved in v2.9 with cookies)

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MIGRATION NOTES
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v2.9 (Cookie Storage):
- Existing sessions will be auto-migrated to cookies on first access
- No data loss expected
- Clear browser cookies to start fresh
- Cookie size limit: ~4KB per cookie (sufficient for most leagues)

v2.0 (Spin System):
- Breaking change: New league flow with method selection
- Existing leagues continue with manual mode
- Spin feature available for new leagues only

v1.0 → v2.0:
- No breaking changes for core league functionality
- Spin system is additive feature
- Backward compatible with all v1.x data

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STATISTICS
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Total Versions: 19 (v1.0 through v2.9)
Major Versions: 2 (v1.x and v2.x)
Development Days: 3 (January 6-8, 2026)
Total Lines of Code (estimated):
  - PHP: ~800 lines
  - JavaScript: ~1,200 lines
  - CSS: ~600 lines
  - HTML: ~400 lines
  - Total: ~3,000 lines

Features Implemented: 45+
Bug Fixes: 15+
UI/UX Improvements: 30+

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CREDITS & ACKNOWLEDGMENTS
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Developer: Helma JS
Framework: Bootstrap 5.3.2
Fonts: Google Fonts (Orbitron, Rajdhani)
Notifications: SweetAlert2 v11.7.32
Icons: Unicode Emoji
Testing: Manual QA

Special Thanks:
- Bootstrap team for excellent CSS framework
- SweetAlert2 for beautiful modals
- Google Fonts for typography
- Canvas API for wheel rendering

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LICENSE
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Copyright (c) 2026 Helma JS
All rights reserved.

This software is provided for educational and personal use.
Redistribution requires permission from the developer.

For commercial licensing, contact: [contact information]

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SUPPORT & CONTACT
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For bug reports, feature requests, or general inquiries:
- Developer: Helma JS
- Project: NURALEAGUE v2.9
- Last Updated: January 08, 2026

Thank you for using NURALEAGUE! ⚽✨

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END OF CHANGELOG
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