thrillwiki_django_no_react/memory-bank/features/parks_page_nextjs.md

Parks Page Next.js Implementation

Troubleshooting Database Issues

Database Setup and Maintenance

1. Created Database Reset Script

   • Location: frontend/src/scripts/db-reset.ts
   • Purpose: Clean database reset and reseed
   • Features:
     • Drops tables in correct order
     • Runs seed script automatically
     • Handles errors gracefully
   • Usage: npm run db:reset

2. Package.json Scripts

   {
     "scripts": {
       "db:reset": "ts-node src/scripts/db-reset.ts",
       "db:seed": "ts-node prisma/seed.ts",
       "prisma:generate": "prisma generate",
       "prisma:migrate": "prisma migrate deploy"
     }
   }
   

3. Database Validation Steps

   • Added connection test in API endpoint
   • Added table existence check
   • Enhanced error logging
   • Added Prisma Client event listeners

API Endpoint Improvements

1. Error Handling

   // Raw query test to verify database connection
   const rawResult = await prisma.$queryRaw`SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname = 'public'`;
   
   // Transaction usage for atomicity
   const queryResult = await prisma.$transaction(async (tx) => {
     const totalCount = await tx.park.count();
     const parks = await tx.park.findMany({...});
     return { totalCount, parks };
   });
   

2. Simplified Query Structure

   • Reduced complexity for debugging
   • Added basic fields first
   • Added proper type checking
   • Enhanced error details

3. Debug Logging

   • Added connection test logs
   • Added query execution logs
   • Enhanced error object logging

Test Data Management

1. Seed Data Structure

   • 2 users (admin and test user)
   • 2 companies (Universal and Cedar Fair)
   • 2 parks with full details
   • Test reviews for each park

2. Data Types

   • Location stored as JSON
   • Dates properly formatted
   • Numeric fields with correct precision
   • Relationships properly established

Current Status

✅ Completed:

• Database reset script
• Enhanced error handling
• Debug logging
• Test data setup
• API endpoint improvements

🚧 Next Steps:

1. Run database reset and verify data
2. Test API endpoint with fresh data
3. Verify frontend component rendering
4. Add error boundaries for component-level errors

Debugging Commands

# Reset and reseed database
npm run db:reset

# Generate Prisma client
npm run prisma:generate

# Deploy migrations
npm run prisma:migrate

API Endpoint Response Format

{
  success: boolean;
  data?: Park[];
  meta?: {
    total: number;
  };
  error?: string;
}

Technical Decisions

1. Using transactions for queries to ensure data consistency
2. Added raw query test to validate database connection
3. Enhanced error handling with specific error types
4. Added debug logging for development troubleshooting
5. Simplified query structure for easier debugging

Next Actions

1. Run npm run db:reset to clean and reseed database
2. Test simplified API endpoint
3. Gradually add back filters once basic query works
4. Add error boundaries to React components