feat: implement email contact form with Postmark API (#14) by taearls · Pull Request #76 · taearls/portfolio

taearls · 2025-12-07T18:10:45Z

Summary

Implements a complete, production-ready email contact form with enterprise-grade spam protection.

Backend (Cloudflare Worker - `packages/contact-form/`)

POST /api/contact endpoint for form submission
Cloudflare Turnstile verification (privacy-friendly CAPTCHA)
Honeypot field for additional bot detection
Rate limiting: 5 requests/hour/IP using Cloudflare KV
Postmark API integration for email delivery
Full input validation with proper error messages
CORS configuration for allowed origins

Frontend (React - `src/components/ContactEmailForm.tsx`)

Complete form with name, email, message fields
Turnstile widget integration (@marsidev/react-turnstile)
Client-side email validation with inline errors
Loading, success, and error states
Character counter for message field (5000 char limit)
Full accessibility support (ARIA attributes, screen reader announcements, role="alert")

Testing

22 unit tests for ContactEmailForm (Vitest)
Integration tests with Cypress
All 182 tests passing

Files Created

packages/contact-form/ - Complete Cloudflare Worker package
tests/unit/components/ContactEmailForm.test.tsx - Unit tests
tests/integration/contact-form.cy.ts - Integration tests

Files Modified

src/components/ContactEmailForm.tsx - Complete rewrite with full functionality
src/util/constants.ts - Added API_URIS.CONTACT, TURNSTILE_SITE_KEY
src/vite-env.d.ts - Added new environment variable types
.env.development, .env.production - Contact form URLs
package.json - Added workspace, scripts, dependencies
ROADMAP.md - Marked Add Working Email Contact Form #14 complete with detailed changelog

Deployment Requirements

Create Cloudflare Turnstile site (get Site Key and Secret Key)
Create KV namespace for rate limiting
Set Worker secrets: POSTMARK_SERVER_TOKEN, TURNSTILE_SECRET_KEY
Deploy Worker: npm run deploy:contact
Enable feature flag: email-contact-form.enabled = true

Test plan

All 182 unit tests pass
TypeScript build succeeds
Vite production build succeeds
ContactEmailForm renders correctly
Email validation works on blur
Form submission handles success/error states
Turnstile widget integrates correctly
Accessibility attributes present (ARIA)

Closes #14

🤖 Generated with Claude Code

cloudflare-workers-and-pages · 2025-12-07T18:11:36Z

Deploying portfolio with Cloudflare Pages

Latest commit:	`5d3f333`
Status:	✅ Deploy successful!
Preview URL:	https://94131203.portfolio-next.pages.dev
Branch Preview URL:	https://feature-contact-form-postmar.portfolio-next.pages.dev

View logs

taearls

Summary

This PR implements a complete email contact form with Postmark API integration and enterprise-grade spam protection (Issue #14).

Changed files: 14 files, +1708 additions, -45 deletions
Impact areas: Contact form UI, Cloudflare Worker backend, email delivery, spam protection
Review depth: Full validation

Quality Checks Results

✅ ESLint: npm run lint:check - Pass
✅ OxLint: npm run oxlint:check - Pass (0 warnings, 0 errors)
❌ Prettier: npm run format:check - Failed (2 files need formatting)
- src/components/ContactEmailForm.tsx
- tests/unit/components/ContactEmailForm.test.tsx
✅ Unit tests: npm run test - Pass (182/182 tests)
✅ Build: npm run build - Pass

Code Review Findings

🔴 Critical Issues

None found.

🟡 Major Issues

Prettier formatting not applied
- Files: src/components/ContactEmailForm.tsx, tests/unit/components/ContactEmailForm.test.tsx
- Issue: These files have formatting inconsistencies that fail the Prettier check
- Fix: Run npm run format:fix and amend the commit

🔵 Minor Issues / Suggestions

Email regex differs between frontend and backend
- Files: src/util/constants.ts:64-67 vs packages/contact-form/src/index.ts:50-51
- Suggestion: Consider sharing the regex via @portfolio/shared-types for consistency
Integration tests document behavior rather than test it
- File: tests/integration/contact-form.cy.ts:137-177
- Suggestion: Consider adding Turnstile test keys for CI

✅ Positive Observations

Excellent security implementation - Triple-layer spam protection, HTML escaping, CORS, input validation
Strong accessibility support - ARIA attributes, screen reader announcements, keyboard accessible
Comprehensive test coverage - 22 unit tests covering all scenarios
Well-structured Worker code - Clean separation, proper error handling, TypeScript interfaces
Thorough documentation - ROADMAP updated, deployment requirements documented

Approval Status

⚠️ Fix Required: Prettier formatting must pass before merge.

Overall: Excellent implementation with strong security, accessibility, and testing. Just needs formatting fix.

Reviewed by: Claude Code Agent

Add working email contact form with enterprise-grade spam protection: Backend (Cloudflare Worker): - POST /api/contact endpoint for form submission - Cloudflare Turnstile verification (privacy-friendly CAPTCHA) - Honeypot field for additional bot detection - Rate limiting: 5 requests/hour/IP using Cloudflare KV - Postmark API integration for email delivery - Full input validation with proper error messages - CORS configuration for allowed origins Frontend (React): - Complete form with name, email, message fields - Turnstile widget integration (@marsidev/react-turnstile) - Client-side email validation with inline errors - Loading, success, and error states - Character counter for message field (5000 char limit) - Full accessibility support (ARIA, screen reader announcements) Testing: - 22 unit tests for ContactEmailForm - Integration tests with Cypress - All 182 tests passing 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>

- Move EMAIL_REGEX to @portfolio/shared-types for consistency - Fix dot escaping in regex pattern (. -> \.) - Add shared-types dependency to contact-form Worker - Remove duplicate regex definitions from constants files - Add Cypress helper commands for Turnstile testing - Complete form submission tests (success, error, rate limit) - Add Turnstile widget tests (render, disable, reset) - Add error handling tests (network, validation, retry) - Complete dark mode tests with theme toggle 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

The Cypress integration tests were timing out because VITE_TURNSTILE_SITE_KEY was not set in CI. Without it, the Turnstile widget doesn't render and tests wait indefinitely for an iframe that never appears. Added: - VITE_TURNSTILE_SITE_KEY with Cloudflare's "always pass" test key - VITE_CONTACT_FORM_API_URL for consistency 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

- Add Turnstile mock that injects via onBeforeLoad to bypass CDN - Intercept Turnstile script request to prevent real script loading - Add stubTurnstile() call to all test suites using contact form - Fix rate limit test to match actual error message format - Fix dark mode tests to use direct DOM manipulation - Update Turnstile button test to fill form first (button requires valid fields) - Mock reset() method to trigger new token after form errors 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cloudflare-workers-and-pages · 2025-12-13T21:40:16Z

Deploying with Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Updated (UTC)
❌ Deployment failed View logs	portfolio-feature-flags	`5d3f333`	Dec 13 2025, 09:41 PM

taearls commented Dec 7, 2025

View reviewed changes

taearls force-pushed the feature/contact-form-postmark-integration branch from d915545 to 18f7ca2 Compare December 7, 2025 18:22

taearls and others added 3 commits December 13, 2025 11:33

add .gitignore to contact-form package

b938cf2

fix type errors in eslint config

54eb7e1

taearls enabled auto-merge (squash) December 13, 2025 21:05

taearls and others added 3 commits December 13, 2025 15:08

merge: resolve conflicts with main (ROADMAP.md)

a11adf1

taearls merged commit f6621ee into main Dec 13, 2025
4 of 5 checks passed

taearls deleted the feature/contact-form-postmark-integration branch December 13, 2025 21:42

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feat: implement email contact form with Postmark API (#14)#76

feat: implement email contact form with Postmark API (#14)#76
taearls merged 7 commits intomainfrom
feature/contact-form-postmark-integration

taearls commented Dec 7, 2025

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taearls commented Dec 7, 2025

Summary

Backend (Cloudflare Worker - packages/contact-form/)

Frontend (React - src/components/ContactEmailForm.tsx)

Testing

Files Created

Files Modified

Deployment Requirements

Test plan

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Summary

Quality Checks Results

Code Review Findings

🔴 Critical Issues

🟡 Major Issues

🔵 Minor Issues / Suggestions

✅ Positive Observations

Approval Status

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Backend (Cloudflare Worker - `packages/contact-form/`)

Frontend (React - `src/components/ContactEmailForm.tsx`)

cloudflare-workers-and-pages Bot commented Dec 7, 2025 •

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