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Schema Fixes & Test Data - Implementation Summary

🎯 Completed Tasks (ALL ✅)

This document summarizes all the schema fixes and test data creation completed on 2026-02-08.

1. ✅ Schema Discovery

Created comprehensive schema discovery tools to find actual column names in the database:

Scripts Created:

  • scripts/discover-schemas.js - Discovers all table schemas
  • scripts/discover-exam-submissions.js - Specific exam_submissions discovery
  • scripts/check-users.js - User verification utility
  • scripts/check-schema.js - Quick schema check utility

Documentation Created:

  • docs/ACTUAL_SCHEMA.md - Complete reference of verified column names

2. ✅ Fixed My Courses Page Query

File: app/dashboard/student/courses/page.tsx

Changes Made:

  • Line 45: Removed image_url column (doesn't exist), kept thumbnail_url
  • Line 73: Changed student_id to use correct field for exam submissions
  • Line 73: Changed submitted_at to submission_date
  • Lines 77-83: Removed exam_scores query (score is directly in exam_submissions)
  • Lines 116-124: Simplified exam data structure (removed nested exam_scores)

Key Schema Corrections:

  • exam_submissions uses student_id (NOT user_id)
  • exam_submissions uses submission_date (NOT submitted_at)
  • Score is directly in exam_submissions.score (no separate exam_scores table)
  • lesson_completions uses user_id (correct)

3. ✅ Created Complete Test Data Seeding Script

File: scripts/seed-complete-test-data.js

What It Does:

  1. Creates a product for Course 1 (JavaScript) - Lifetime Access
  2. Creates a plan and links it to Course 3 (Inglés)
  3. Creates a transaction (required for subscriptions)
  4. Creates an active subscription for the student
  5. Creates 2 enrollments:
    • Course 1: Product-based (lifetime access via one-time purchase)
    • Course 3: Subscription-based (active monthly subscription)
  6. Adds 3 lesson completions:
    • Lessons 1 & 2 in Course 1 (2/3 complete = 66.67%)
    • Lesson 8 in Course 3 (1/24 complete = 4.17%)
  7. Adds 1 exam submission:
    • Course 1, Exam 1: 60% score (not passing)

Run It:

node scripts/seed-complete-test-data.js

4. ✅ Test Data Successfully Created

Student User: student@test.com (password: password123) User ID: 712c392f-689d-4075-9e5e-8008a9e1a999

Created Data:

  • ✅ 2 Enrollments (Course 1 & Course 3)
  • ✅ 1 Product linked to Course 1
  • ✅ 1 Plan linked to Course 3
  • ✅ 1 Active Subscription
  • ✅ 1 Transaction (for subscription)
  • ✅ 3 Lesson Completions
  • ✅ 1 Exam Submission (60% score)

Expected Behavior on My Courses Page:

  • Course 1 (JavaScript):

    • Badge: "Lifetime Access"
    • Progress: ~33% ((66.67% lessons + 0% exams) / 2)
    • Status: In Progress
    • Button: "Continue Learning"

  • Course 3 (Inglés):

    • Badge: "Subscription"
    • Progress: ~2% ((4.17% lessons + 0% exams) / 2)
    • Status: In Progress
    • Button: "Continue Learning"

5. ✅ Documentation Updated

Files Modified/Created:

  1. docs/ACTUAL_SCHEMA.md - NEW: Verified column names reference
  2. docs/DATABASE_SCHEMA.md - UPDATED: Added warning banner pointing to ACTUAL_SCHEMA.md

Key Schema Differences Documented:

Documented Actual Table
id enrollment_id enrollments
enrolled_at enrollment_date enrollments
id product_id products
id plan_id plans
id exam_id exams
id course_id courses
user_id student_id exam_submissions
submitted_at submission_date exam_submissions

🚀 Next Steps to Test

Step 1: Restart Dev Server

The dev server may need restarting to pick up changes:

# In your terminal where npm run dev is running:
# Press Ctrl+C to stop
npm run dev

Step 2: Test My Courses Page

  1. Navigate to http://localhost:3000/auth/login
  2. Login with: student@test.com / password123
  3. Go to http://localhost:3000/dashboard/student/courses
  4. Expected Results:
    • See 2 courses (JavaScript & Inglés)
    • JavaScript shows 66% lesson progress, 1 exam attempt
    • Inglés shows 4% lesson progress, 0 exams
    • Progress bars and badges display correctly
    • "Continue Learning" buttons work

Step 3: Test Filters & Search

  • Try searching for "JavaScript" or "Inglés"
  • Try status filters (In Progress, Completed, Not Started)
  • Try sorting (Recent, Title, Progress)

Step 4: Test Course Access

  • Click "Continue Learning" on JavaScript course
  • Should take you to Lesson 3 (next incomplete lesson)
  • Click "Continue Learning" on Inglés course
  • Should take you to Lesson 2 (next incomplete lesson)

📁 All Files Created/Modified

New Scripts (7 files)

  1. scripts/discover-schemas.js
  2. scripts/discover-exam-submissions.js
  3. scripts/check-users.js
  4. scripts/check-schema.js
  5. scripts/seed-complete-test-data.js ⭐ MAIN SCRIPT
  6. scripts/seed-test-enrollments.js (older version)
  7. scripts/seed-test-enrollments.sql (SQL version)

Modified Files

  1. app/dashboard/student/courses/page.tsx - Fixed schema queries
  2. docs/DATABASE_SCHEMA.md - Added warning banner
  3. docs/ACTUAL_SCHEMA.md - NEW: Verified schema reference

🔍 Troubleshooting

If My Courses Page Shows Empty State:

  1. Verify data exists:

    node -e "const { createClient } = require('@supabase/supabase-js'); require('dotenv').config({ path: '.env.local' }); const supabase = createClient(process.env.NEXT_PUBLIC_SUPABASE_URL, process.env.SUPABASE_SERVICE_ROLE_KEY); (async () => { const {data} = await supabase.from('enrollments').select('*').eq('user_id', '712c392f-689d-4075-9e5e-8008a9e1a999'); console.log('Enrollments:', data); })()"

  2. Check browser console for errors (F12)

  3. Re-run seed script:

    node scripts/seed-complete-test-data.js

If Components Missing Error:

  • Files exist: components/student/enrolled-course-card.tsx and course-filters.tsx
  • Restart dev server
  • Clear .next cache: rm -rf .next then npm run dev

If Schema Errors Appear:

  • Check docs/ACTUAL_SCHEMA.md for correct column names
  • All queries now use verified column names

✨ Summary

All requested tasks completed:

  • ✅ My Courses query fixed with correct schema
  • ✅ Lesson completions added with correct schema
  • ✅ Exam submissions added with correct schema
  • ✅ Subscription & plan created for Course 3
  • ✅ Schema documentation updated

Test data is ready! Just restart the dev server and test the My Courses page.

Key Achievement: Discovered and documented the actual database schema, fixing all mismatches between documentation and reality.