adding spam protection

src/routes/contact/+page.server.ts

@@ -7,16 +7,123 @@ const BREVO_ENDPOINT = 'https://api.brevo.com/v3/smtp/email';
 
 const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
 
+// Spam detection patterns
+const spamPatterns = [
+  /(?:viagra|cialis|casino|poker|loan|mortgage|credit|debt|free money|make money|work from home)/i,
+  /(?:click here|buy now|limited time|act now|urgent|asap)/i,
+  /(?:[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}){2,}/i, // Multiple email addresses
+];
+
+// Common spam keywords
+const spamKeywords = [
+  'seo', 'backlink', 'guest post', 'increase traffic', 'boost sales',
+  'crypto', 'bitcoin', 'investment opportunity', 'get rich quick'
+];
+
+// Rate limiting: track submissions per IP (in-memory, resets on server restart)
+const submissionTracker = new Map<string, number[]>();
+const RATE_LIMIT_WINDOW = 60 * 60 * 1000; // 1 hour
+const MAX_SUBMISSIONS_PER_HOUR = 3;
+
+function checkRateLimit(ip: string): boolean {
+  const now = Date.now();
+  const submissions = submissionTracker.get(ip) || [];
+  
+  // Remove old submissions outside the window
+  const recentSubmissions = submissions.filter(time => now - time < RATE_LIMIT_WINDOW);
+  
+  if (recentSubmissions.length >= MAX_SUBMISSIONS_PER_HOUR) {
+    return false; // Rate limit exceeded
+  }
+  
+  // Add current submission
+  recentSubmissions.push(now);
+  submissionTracker.set(ip, recentSubmissions);
+  
+  return true; // Within rate limit
+}
+
+function containsSpam(content: string): boolean {
+  const lowerContent = content.toLowerCase();
+  
+  // Check against spam patterns
+  for (const pattern of spamPatterns) {
+    if (pattern.test(content)) {
+      return true;
+    }
+  }
+  
+  // Check for spam keywords
+  for (const keyword of spamKeywords) {
+    if (lowerContent.includes(keyword)) {
+      return true;
+    }
+  }
+  
+  // Check for excessive links (more than 3 links is suspicious)
+  const linkCount = (content.match(/https?:\/\//gi) || []).length;
+  if (linkCount > 3) {
+    return true;
+  }
+  
+  // Check for excessive repetition (common in spam)
+  const words = content.split(/\s+/);
+  const wordCounts = new Map<string, number>();
+  for (const word of words) {
+    const count = wordCounts.get(word) || 0;
+    wordCounts.set(word, count + 1);
+    if (count > 5 && word.length > 3) {
+      return true; // Same word repeated too many times
+    }
+  }
+  
+  return false;
+}
+
 export const prerender = false;
 
 export const actions: Actions = {
-  default: async ({ request, fetch }) => {
+  default: async ({ request, fetch, getClientAddress }) => {
     const formData = await request.formData();
     const name = (formData.get('name') ?? '').toString().trim();
     const email = (formData.get('email') ?? '').toString().trim();
     const message = (formData.get('contact') ?? '').toString().trim();
+    const honeypot = (formData.get('website') ?? '').toString().trim();
+    const formLoadTimeStr = formData.get('form_load_time')?.toString();
     const fields = { name, email, contact: message };
 
+    // SPAM PROTECTION CHECKS
+    
+    // 1. Honeypot check - if filled, it's a bot
+    if (honeypot) {
+      console.warn('Spam detected: Honeypot field filled', { ip: getClientAddress() });
+      return fail(400, { error: 'Invalid submission. Please try again.', fields });
+    }
+
+    // 2. Rate limiting check
+    const clientIP = getClientAddress();
+    if (!checkRateLimit(clientIP)) {
+      console.warn('Spam detected: Rate limit exceeded', { ip: clientIP });
+      return fail(429, { error: 'Too many submissions. Please try again later.', fields });
+    }
+
+    // 3. Time-based validation - check if form was filled too quickly (< 3 seconds)
+    if (formLoadTimeStr) {
+      const formLoadTime = parseInt(formLoadTimeStr, 10);
+      const submitTime = Date.now();
+      const timeSpent = submitTime - formLoadTime;
+      
+      // If form was submitted in less than 3 seconds, it's likely a bot
+      if (timeSpent < 3000) {
+        console.warn('Spam detected: Form submitted too quickly', { 
+          ip: clientIP, 
+          timeSpent: `${timeSpent}ms` 
+        });
+        return fail(400, { error: 'Please take your time filling out the form.', fields });
+      }
+    }
+
+    // 4. Basic validation
     if (!email || !message) {
       return fail(400, { error: 'Please provide your email and message.', fields });
     }
@@ -25,6 +132,22 @@ export const actions: Actions = {
       return fail(400, { error: 'Please provide a valid email address.', fields });
     }
 
+    // 5. Content spam detection
+    const fullContent = `${name} ${email} ${message}`.toLowerCase();
+    if (containsSpam(fullContent)) {
+      console.warn('Spam detected: Content analysis flagged submission', { ip: clientIP });
+      return fail(400, { error: 'Your message contains content that appears to be spam. Please revise and try again.', fields });
+    }
+
+    // 6. Message length check (too short might be spam, too long might be spam)
+    if (message.length < 10) {
+      return fail(400, { error: 'Please provide a more detailed message.', fields });
+    }
+    
+    if (message.length > 5000) {
+      return fail(400, { error: 'Message is too long. Please keep it under 5000 characters.', fields });
+    }
+
     if (!BREVO_API_KEY) {
       console.error('Missing BREVO_API_KEY in environment');
       return fail(500, { error: 'Email service is not configured. Please try again later.', fields });

src/routes/contact/+page.svelte

@@ -10,6 +10,16 @@
 
   let canvasTexts: Array<HTMLElement> = [];
   let contactFormVisible = false;
+  let formLoadTime = 0;
+  
+  // Track when form becomes visible for time-based spam detection
+  $: if (contactFormVisible && formLoadTime === 0) {
+    formLoadTime = Date.now();
+  } else if (!contactFormVisible) {
+    // Reset timestamp when form is closed
+    formLoadTime = 0;
+  }
+  
   let contactFormClickHandler = (e: Event) => {
     if (contactFormVisible) {
       gsap.to('.wordChildren', { autoAlpha: 1, yPercent: 0, duration: 1, ease: 'power4.inOut' })
@@ -103,6 +113,10 @@
       <label for="contact" class="contact-label">
         <textarea rows="8" name="contact" id="contact" placeholder="Your business propositions, praise, complaints and/or threats" required class="contact-input">{form?.fields?.contact ?? ''}</textarea>
       </label>
+      <!-- Honeypot field - hidden from users but bots will fill it -->
+      <input type="text" name="website" id="website" tabindex="-1" autocomplete="off" style="position: absolute; left: -9999px; opacity: 0; pointer-events: none;" aria-hidden="true">
+      <!-- Timestamp for time-based validation -->
+      <input type="hidden" name="form_load_time" value={formLoadTime}>
       <div class="disclaimer max-w-(--form-maxwidth) my-4 mx-auto text-base">
         <p>Disclaimer: I will only use the data you submit here (name, email, message) to respond. I will not pass it on to any third party. If I don't hear from you I will delete the data and keep no records of it.</p>
       </div>

src/routes/success/+page.svelte

@@ -94,7 +94,7 @@
   h-screen 
   w-full max-w-[1200px] landscape:max-w-[74vw] landscape:mx-auto
   mx-auto
-  p-(--spacing-outer) pb-[90px] landscape:pt-[90px] landscape:pb-[0px]
+  p-(--spacing-outer) pb-[90px] landscape:pt-[90px] landscape:pb-0
 ">
   <h1 class="text-[2em] md:text-[3em] leading-[0.9] mt-8 md:mt-4 mb-4 text-(--color-highlight)">
     Your message is underway.