Enforce Pro plan limit of 5,000 PDFs/month

src/middleware/usage.ts

@@ -3,6 +3,7 @@ import logger from "../services/logger.js";
 import pool from "../services/db.js";
 
 const FREE_TIER_LIMIT = 100;
+const PRO_TIER_LIMIT = 2500;
 
 // In-memory cache, periodically synced to PostgreSQL
 let usage = new Map<string, { count: number; monthKey: string }>();
@@ -44,6 +45,15 @@ export function usageMiddleware(req: any, res: any, next: any): void {
   const monthKey = getMonthKey();
 
   if (isProKey(key)) {
+    const record = usage.get(key);
+    if (record && record.monthKey === monthKey && record.count >= PRO_TIER_LIMIT) {
+      res.status(429).json({
+        error: "Pro tier limit reached (2,500/month). Contact support for higher limits.",
+        limit: PRO_TIER_LIMIT,
+        used: record.count,
+      });
+      return;
+    }
     trackUsage(key, monthKey);
     next();
     return;
@@ -55,7 +65,7 @@ export function usageMiddleware(req: any, res: any, next: any): void {
       error: "Free tier limit reached",
       limit: FREE_TIER_LIMIT,
       used: record.count,
-      upgrade: "Upgrade to Pro for unlimited conversions: https://docfast.dev/pricing",
+      upgrade: "Upgrade to Pro for 2,500 PDFs/month: https://docfast.dev/pricing",
     });
     return;
   }

src/routes/billing.ts

@@ -76,7 +76,7 @@ a { color: #4f9; }
 <p>Your API key:</p>
 <div class="key" style="position:relative">${escapeHtml(keyInfo.key)}<button onclick="navigator.clipboard.writeText('${escapeHtml(keyInfo.key)}');this.textContent='Copied!';setTimeout(()=>this.textContent='Copy',1500)" style="position:absolute;top:8px;right:8px;background:#4f9;color:#0a0a0a;border:none;border-radius:4px;padding:4px 12px;cursor:pointer;font-size:0.8rem;font-family:system-ui">Copy</button></div>
 <p><strong>Save this key!</strong> It won't be shown again.</p>
-<p>10,000 PDFs/month • All endpoints • Priority support</p>
+<p>5,000 PDFs/month • All endpoints • Priority support</p>
 <p><a href="/docs">View API docs →</a></p>
 </div></body></html>`);
   } catch (err: any) {
@@ -184,7 +184,7 @@ async function getOrCreateProPrice(): Promise<string> {
   } else {
     const product = await getStripe().products.create({
       name: "DocFast Pro",
-      description: "Unlimited PDF conversions via API. HTML, Markdown, and URL to PDF.",
+      description: "5,000 PDFs / month via API. HTML, Markdown, and URL to PDF.",
     });
     productId = product.id;
   }