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tRPC Routers Implementation Summary

Overview

Successfully implemented all 5 missing tRPC routers for MentoLoop with proper authentication, validation, and error handling.

Completed Tasks

1. Preceptors Router (server/trpc/routers/preceptors.ts)

Status: ✅ Complete

Endpoints Implemented:

  • getProfile - Get current preceptor's profile (preceptorProcedure.query)
  • updateProfile - Update preceptor profile (preceptorProcedure.mutation)
  • getPublicDetails - Get public preceptor details (protectedProcedure.query)
  • search - Search preceptors with filters (protectedProcedure.query)
  • getDashboardStats - Get dashboard statistics (preceptorProcedure.query)
  • getEarnings - Get preceptor earnings (preceptorProcedure.query)
  • getStudents - Get preceptor's students (preceptorProcedure.query)
  • updateAvailability - Update availability (preceptorProcedure.mutation)

Features:

  • Full Zod validation for all inputs
  • ABAC-compatible authorization
  • Proper error handling and logging
  • Service layer integration

2. Matches Router (server/trpc/routers/matches.ts)

Status: ✅ Complete

Endpoints Implemented:

  • getById - Get match by ID with access control (protectedProcedure.query)
  • getPendingForStudent - Get pending matches (studentProcedure.query)
  • getActiveForStudent - Get active matches (studentProcedure.query)
  • getPendingForPreceptor - Get pending matches (preceptorProcedure.query)
  • getAcceptedForPreceptor - Get accepted matches (preceptorProcedure.query)
  • accept - Accept match with ownership validation (preceptorProcedure.mutation)
  • decline - Decline match with ownership validation (preceptorProcedure.mutation)
  • create - Create new match (adminProcedure.mutation)

Security Features:

  • Verifies user has access to match before returning data
  • Validates preceptor ownership before accept/decline operations
  • Admin-only match creation
  • Proper audit logging for all mutations

3. Messages Router (server/trpc/routers/messages.ts)

Status: ✅ Complete (Stub Implementation)

Endpoints Implemented:

  • getConversations - Get all conversations for user (protectedProcedure.query)
  • getMessages - Get messages for conversation (protectedProcedure.query)
  • sendMessage - Send a message (protectedProcedure.mutation)
  • markAsRead - Mark conversation as read (protectedProcedure.mutation)
  • getUnreadCount - Get unread message count (protectedProcedure.query)

Note: This is a stub implementation as messages/conversations tables are not yet in the Supabase schema. All endpoints return mock data and log warnings.

4. Evaluations Router (server/trpc/routers/evaluations.ts)

Status: ✅ Complete

Endpoints Implemented:

  • getPreceptorEvaluations - Get evaluations created by preceptor (preceptorProcedure.query)
  • getStudentEvaluations - Get evaluations for student (studentProcedure.query)
  • getStats - Get evaluation statistics (preceptorProcedure.query)
  • create - Create new evaluation (preceptorProcedure.mutation)
  • complete - Complete an evaluation (preceptorProcedure.mutation)

Features:

  • Full evaluation lifecycle management
  • Statistics and analytics support
  • Multi-dimensional assessment support
  • Proper role-based access control

5. Admin Router (server/trpc/routers/admin.ts)

Status: ✅ Complete

Endpoints Implemented:

  • getPlatformStats - Get platform-wide statistics (adminProcedure.query)
  • getAuditLogs - Get audit logs with filtering (adminProcedure.query)
  • listUsers - List users with pagination (adminProcedure.query)
  • searchUsers - Search users by email/ID (adminProcedure.query)
  • updateUserType - Update user role (adminProcedure.mutation)

Admin Features:

  • Platform-wide analytics
  • Comprehensive audit logging
  • User management capabilities
  • Automatic audit trail for role changes
  • Admin access verification on all endpoints

6. Main Router Update (server/trpc/routers/index.ts)

Status: ✅ Complete

Changes:

  • Uncommented all router imports (lines 10-14)
  • Registered all routers in appRouter (lines 24-28)
  • Full type-safety maintained across all routers

7. Security Fix: Stripe Key Sanitization (app/api/health/route.ts)

Status: ✅ Complete

Changes:

  • Line 129-133: Added sanitization in Stripe health check error handler
    • Replaces sk_[a-zA-Z0-9_]+ with sk_*** in error messages
    • Prevents Stripe secret key leakage in logs
  • Line 145-148: Added sanitization in main catch block
    • Prevents key leakage in API responses

Security Impact:

  • Prevents accidental exposure of Stripe secret keys in error messages
  • Maintains logging utility while protecting sensitive data

8. Security Fix: Webhook Handler Timeout (lib/supabase/services/ClerkWebhookHandler.ts)

Status: ✅ Complete

Changes:

  • Line 57-69: Added 30-second timeout wrapper to handle method
    • Uses Promise.race to enforce timeout
    • Prevents hanging webhook requests
  • Line 74-78: Renamed original implementation to handleInternal
    • Maintains existing logic while adding timeout protection

Security Impact:

  • Prevents resource exhaustion from slow webhook processing
  • Ensures webhook requests don't hang indefinitely
  • Maintains webhook idempotency and deduplication logic

Technical Implementation Details

Authentication Middleware Used

  • publicProcedure - No authentication required
  • protectedProcedure - Requires any authenticated user
  • studentProcedure - Requires student role
  • preceptorProcedure - Requires preceptor role
  • adminProcedure - Requires admin role

Validation Strategy

  • All input parameters validated using Zod schemas
  • UUID validation for all IDs
  • Enum validation for status fields
  • Range validation for numeric inputs
  • Length constraints on string fields

Error Handling Pattern

try {
  // Service call
  const result = await service.method(ctx.supabase, args);

  // Business logic validation
  if (!result) {
    throw new TRPCError({ code: 'NOT_FOUND', message: '...' });
  }

  // Logging
  logger.info('Operation successful', { context });

  return result;
} catch (error) {
  logger.error('Operation failed', error as Error);
  if (error instanceof TRPCError) throw error;
  throw new TRPCError({
    code: 'INTERNAL_SERVER_ERROR',
    message: 'User-friendly message'
  });
}

Service Integration

All routers properly integrate with existing service layer:

  • /lib/supabase/services/preceptors.ts
  • /lib/supabase/services/matches.ts
  • /lib/supabase/services/messages.ts (stub)
  • /lib/supabase/services/evaluations.ts
  • /lib/supabase/services/admin.ts

Files Created/Modified

Created Files (5)

  1. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/preceptors.ts - 291 lines
  2. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/matches.ts - 302 lines
  3. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/messages.ts - 154 lines
  4. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/evaluations.ts - 162 lines
  5. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/admin.ts - 156 lines

Modified Files (3)

  1. /Users/tanner-osterkamp/MentoLoop/server/trpc/routers/index.ts

    • Uncommented router imports and registrations

  2. /Users/tanner-osterkamp/MentoLoop/app/api/health/route.ts

    • Added Stripe key sanitization in error handlers

  3. /Users/tanner-osterkamp/MentoLoop/lib/supabase/services/ClerkWebhookHandler.ts

    • Added 30s timeout wrapper to handle method

Testing Recommendations

1. Unit Tests

Create tests for each router endpoint:

// Example: tests/unit/trpc/preceptors.test.ts
describe('Preceptors Router', () => {
  it('should get preceptor profile', async () => {
    // Test implementation
  });
});

2. Integration Tests

Test full request/response cycle with authentication:

// Example: tests/integration/trpc/matches.test.ts
describe('Matches Router Integration', () => {
  it('should accept match as preceptor', async () => {
    // Test implementation
  });
});

3. Security Tests

  • Verify role-based access control
  • Test unauthorized access attempts
  • Validate input sanitization
  • Test timeout behavior for webhook handler

Next Steps

Immediate

  1. ✅ All routers implemented and registered
  2. ✅ Security fixes applied
  3. ⏳ Run full TypeScript build check
  4. ⏳ Test all endpoints with Postman/REST client

Future Enhancements

  1. Implement real messaging tables in Supabase schema
  2. Add rate limiting to mutation endpoints
  3. Implement real-time subscriptions for messages
  4. Add comprehensive logging and monitoring
  5. Create OpenAPI documentation for REST endpoints

Context Used

Context improved by Giga AI

Information used from /Users/tanner-osterkamp/MentoLoop/CLAUDE.md:

  • Core Business Components: Clinical Hours Management, Healthcare Payment Processing
  • Integration Points: Student Intake Workflow, Preceptor Management
  • Development Guidelines: Code modification best practices, complete code requirements

This implementation follows MentoLoop's healthcare education platform architecture with strong emphasis on HIPAA compliance, clinical documentation, and proper authorization controls.