Refactor to reviews-only flow and add OAuth consent, restore working condition

[Ashish-Kumar-Dash]

Remove legacy ratings API + form and align types to the reviews schema
Compute course/professor stats directly from community reviews (no trigger dependency)
Add OAuth consent page and fix course review fetching by UUID

Summary by CodeRabbit

Release Notes

• New Features

  • Course ratings now include difficulty and workload dimensions for more detailed feedback.
  • Professor ratings now include knowledge, teaching, and approachability dimensions.
  • Added OAuth consent screen for Google authentication.

• Improvements

  • Dashboard now displays reviews with comprehensive rating breakdowns.
  • Replaced ratings system with enhanced reviews system.

• Removals

  • Removed standalone ratings and rating voting functionality.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d712569b-c9ea-452e-952d-da8c272829a3

📥 Commits

Reviewing files that changed from the base of the PR and between 5ec9043 and ce09a68.

📒 Files selected for processing (18)

• src/app/courses/[courseId]/page.tsx
• src/app/dashboard/page.tsx
• src/app/oauth/consent/page.tsx
• src/app/professors/[professorId]/page.tsx
• src/components/courses/ItemList.tsx
• src/components/courses/course_page/CoursePageHeader.tsx
• src/components/courses/course_page/CoursePageReviews.tsx
• src/components/courses/course_page/CoursePageStats.tsx
• src/components/professors/professor_page/ProfessorPageStats.tsx
• src/components/ratings/RatingForm.tsx
• src/lib/data/reviews.tsx
• src/migrations/migration.sql
• src/pages/api/courses/[id].ts
• src/pages/api/ratings/my-ratings/route.ts
• src/pages/api/ratings/route.ts
• src/pages/api/ratings/vote/route.ts
• src/types/index.ts
• src/types/supabase.ts

---

Walkthrough

This PR migrates the application from a separate ratings table model to an embedded review-dimensions model. The Supabase schema is restructured to denormalize rating metrics into courses and professors tables, with a unified reviews table containing all rating dimensions. Legacy rating creation and voting APIs are removed, along with the RatingForm component. All pages and components are rewired to compute and display aggregated review dimensions.

Changes

Reviews Model Migration

Layer / File(s)	Summary
Database schema and type definitions src/types/supabase.ts, src/types/index.ts, src/migrations/migration.sql	Supabase schema redefined: courses and professors gain rating-metric columns (overall_rating, difficulty_rating, workload_rating, review_count/knowledge_rating, teaching_rating, approachability_rating, review_count). The reviews table now includes per-dimension ratings and a target_id/target_type model; votes and flags tables keyed by review_id replace the prior ratings/rating_votes/rating_flags structure. Users table reference corrected and legacy Rating types removed.
Remove legacy rating APIs and RatingForm component src/lib/data/reviews.tsx, src/pages/api/courses/[id].ts	Rating creation (/api/ratings), voting (/api/ratings/vote), and user-rating fetch (/api/ratings/my-ratings) endpoints removed. Course API endpoint updated to fetch and return reviews instead of ratings, filtering by target_id and target_type = 'course'. RatingForm component deleted entirely.
Course page review aggregation and component wiring src/app/courses/[courseId]/page.tsx, src/components/courses/course_page/CoursePageHeader.tsx, src/components/courses/course_page/CoursePageStats.tsx, src/components/courses/course_page/CoursePageReviews.tsx	CoursePage now fetches overall rating, difficulty_rating, and workload_rating from reviews, computes per-dimension averages formatted to 1 decimal, and passes them to child components. CoursePageStats refactored to display four rating dimensions (overall, difficulty, workload, reviews count) with updated icons (Star, Flame, Zap, MessageSquare). CoursePageReviews now accepts nullable id and skips the query when missing.
Professor page review aggregation and stats display src/app/professors/[professorId]/page.tsx, src/components/professors/professor_page/ProfessorPageStats.tsx	ProfessorPage fetches and aggregates overall rating, knowledge_rating, teaching_rating, and approachability_rating dimensions, computing 1-decimal averages. ProfessorPageStats refactored to accept explicit numeric props (removing optional professor object) and displays all four ratings with a secondary review-count line under the overall rating stat.
Dashboard and ItemList simplification src/app/dashboard/page.tsx, src/components/courses/ItemList.tsx	Dashboard page removes user ratings fetch and simplifies to a single "Your Reviews" section displaying user reviews with optional review-dimension fields (difficulty, workload, knowledge, teaching, approachability). ItemList component removes Supabase ratings aggregation for professors and simplifies loading state logic, now depending only on data hook loading flags.
New OAuth consent flow page src/app/oauth/consent/page.tsx	New client-side consent page component that displays OAuth permissions, requires checkbox acceptance, and gates the "Continue with Google" button with loading/accepted states. Includes fade-in animations and a link back to sign-in.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~50 minutes

Possibly related PRs

• OpenLake/RateMyCourse#39: Both PRs update the course/professor pages to read from the new reviews-based schema (e.g., rating_value/per-dimension ratings) and wire those computed values into the corresponding stats/reviews components, sharing direct code changes in the same page/components.

Poem

🐰 From ratings scattered far and wide,
We've gathered reviews side by side,
Difficulty, workload, knowledge too—
One table holds what's honest and true.
The consent page dances in, so neat,
Making user journeys complete! 🌟

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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