Implement pagination and search functionality for bills and proceedings

[aliirz]

closes #55

[vercel]

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Project	Deployment	Review	Updated (UTC)
numainda	Ready	Preview, Comment	Jan 1, 2026 11:00am

[claude]

Pull Request Review: Pagination and Search Functionality

Thank you for implementing pagination and search for bills and proceedings! This is a valuable feature that will significantly improve UX as the database grows.

✅ Strengths

1. Clean Implementation: The code follows React best practices with proper hooks usage and state management
2. Consistent Pattern: Bills and proceedings implementations mirror each other, making the codebase predictable
3. Good UX: Search resets to page 1, smooth scrolling on page changes, and proper loading/error states
4. Type Safety: Excellent TypeScript usage with proper interfaces
5. Accessibility: Screen reader text for pagination buttons is a nice touch

🔴 Critical Issues

1. SQL Injection Vulnerability (Security)

Location: app/api/bills/route.ts:19-21 and app/api/proceedings/route.ts:18

The search functionality is vulnerable to SQL injection. User input is directly interpolated into the LIKE pattern. Special SQL characters (%, _, ) could cause unintended behavior.

Recommendation: Sanitize input by escaping SQL LIKE wildcards before using in queries.

2. Missing Input Validation

Location: Both API routes, lines 12-14

No bounds checking for page/limit parameters. Malicious users could send negative numbers or extremely large values causing DoS.

Recommendation: Add validation with min/max bounds (e.g., limit capped at 100).

3. Race Condition in Client Components

Location: app/bills/page.tsx:67 and app/proceedings/page.tsx:66

Rapid searches or page changes can cause race conditions where responses arrive out of order.

Recommendation: Implement request cancellation using AbortController in useEffect cleanup.

4. Debouncing Missing for Search

Location: app/bills/page.tsx:77-80

Every keystroke triggers a database query. Add debouncing (300-500ms) to reduce query frequency.

⚠️ High Priority Issues

5. Performance: N+1 Query Issue

You're executing 2 separate queries for every request (fetch data + count). Consider using PostgreSQL window functions to get count in a single query.

6. Error Handling for Edge Cases

Location: app/api/bills/route.ts:35-38

Destructuring could fail if query returns no results. Add optional chaining and fallback values.

💡 Medium Priority Suggestions

7. Code Duplication: Bills and proceedings implementations are nearly identical. Consider creating a reusable custom hook.

8. Search UX: Add clear button, URL params for shareable links, loading indicator in search input.

9. Type Safety: Count query returns number OR bigint. Explicitly convert to Number.

10. Dark Mode: Use text-muted-foreground instead of text-gray-500.

📝 Testing Recommendations

No tests were added. Consider adding API route tests, component tests, and integration tests.

🎯 Summary

Must Fix Before Merge:

• SQL injection vulnerability
• Input validation for page/limit
• Race condition handling
• Debounce search input

Should Fix Soon:

• N+1 query optimization
• Error handling
• Test coverage

📊 Overall Assessment

Code Quality: ⭐⭐⭐⭐ (4/5)
Security: ⭐⭐⭐ (3/5) - Needs input sanitization
Performance: ⭐⭐⭐ (3/5) - Needs debouncing and optimization
UX: ⭐⭐⭐⭐ (4/5)

This is a solid implementation! Address the critical security and race condition issues before merging. Great work! 🚀