Summary

Implemented a comprehensive Goal Setting and Progress Tracking system that allows users to create, manage, and monitor their productivity goals with auto-sync from GitHub, visual progress indicators, and achievement tracking.

Closes #2729

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that changes existing behavior)
• 📝 Documentation update
• ♻️ Refactor / code cleanup (no functional change)
• ⚡ Performance improvement
• 🔒 Security fix
• 🧪 Tests only

What Changed

Components Added

• src/components/GoalTracker.tsx - Main goal tracker widget with create/edit/delete functionality, progress bars, confetti animations, and goal sharing
• src/components/GoalHistory.tsx - Past goals history display with completion/missed status tracking

API Endpoints Added

• src/app/api/goals/route.ts - GET (fetch all goals), POST (create new goal)
• src/app/api/goals/[id]/route.ts - PATCH (update goal), DELETE (remove goal)
• src/app/api/goals/sync/route.ts - POST (sync goals from GitHub API)
• src/app/api/goals/history/route.ts - GET (fetch goal history)
• src/app/api/goals/suggestions/route.ts - GET (suggested goals based on activity)
• src/app/api/goals/achievements/route.ts - GET (achievement badges)
• src/app/api/goals/notify/route.ts - POST (send notifications)

Features Implemented

• Custom goal creation with multiple unit types (commits, PRs, hours, streak, lines of code)
• Recurrence support (one-time, weekly, monthly) with automatic reset
• Auto-sync from GitHub for commit/PR based goals (every 15 minutes)
• Visual progress indicators with animated progress bars
• Goal sharing (public/private toggle with shareable links)
• Achievement badges and completion notifications
• Responsive design for mobile, tablet, desktop
• Comprehensive error handling (rate limits, auth errors, network errors)
• Input validation and duplicate prevention

How to Test

1. Create a Goal:

   • Navigate to Goals widget
   • Click "Create goal"
   • Enter title, target, unit, optional deadline
   • Select recurrence (one-time/weekly/monthly)
   • Click "Create goal"
   • Verify goal appears in list

2. Test Auto-Sync (Commits):

   • Create a goal with "Commits" as unit
   • Make a new commit on GitHub
   • Click "Refresh" button
   • Verify goal progress updates within 15 minutes

3. Test Goal Completion:

   • Create goal with target=3
   • Manually increment progress to 3 (for non-auto-synced goals)
   • Verify confetti animation plays
   • Verify "Completed ✓" status appears

4. Test Recurrence:

   • Create weekly goal on Monday
   • Complete it
   • Wait for next Monday (or test logic)
   • Verify progress resets to 0

5. Test Goal Sharing:

   • Create a goal
   • Toggle "Public" checkbox
   • Click "Copy share link"
   • Verify link is copied to clipboard
   • Visit shared link in new tab
   • Verify goal appears publicly

6. Test Responsiveness:

   • View on mobile (375px width)
   • View on tablet (768px width)
   • View on desktop (1440px width)
   • Verify layout adapts properly

7. Test Error Handling:

   • Try creating goal with empty title → see validation error
   • Try exceeding GitHub rate limit → see helpful error message
   • Try deleting goal → verify confirmation modal appears
   • Try with slow network → verify error messages appear

Expected result:

• All goals display correctly with real-time progress
• Auto-sync works for GitHub-based goals
• Confetti plays on completion
• Responsive layout works on all screen sizes
• Error messages are clear and helpful
• Public/private sharing works without errors

Checklist

• Linked the related issue above
• Self-reviewed my own diff
• No unnecessary console.log, debug code, or commented-out blocks
• npm run lint passes locally
• No TypeScript errors (npm run type-check)
• Added or updated tests where applicable
• Updated documentation / comments if behavior changed

Accessibility (UI changes only)

• Keyboard navigation works correctly
• Color contrast meets WCAG AA standard
• ARIA labels / roles added where needed
• Tested on mobile / responsive layout

Additional Context

Design Decisions

• Used 15-minute sync interval to balance real-time updates with API rate limits
• Implemented optimistic UI updates for better user experience
• Added confetti animation on goal completion to increase engagement
• Used variable CSS for theming to match existing design system
• Stored goal reset version to handle race conditions on period resets

Follow-up Issues (if any)

• Email notifications integration (requires email service setup)
• Leaderboard integration with goals
• Advanced analytics dashboard