add upstash rate limiting

apps/web/src/app/api/waitlist/route.ts

@@ -0,0 +1,67 @@
+import { NextRequest, NextResponse } from "next/server";
+import { db } from "@/lib/db";
+import { waitlist } from "@/lib/db/schema";
+import { eq } from "drizzle-orm";
+import { nanoid } from "nanoid";
+import { waitlistRateLimit } from "@/lib/rate-limit";
+
+export async function POST(request: NextRequest) {
+  // Rate limit check
+  const identifier = request.headers.get("x-forwarded-for") ?? "127.0.0.1";
+  const { success } = await waitlistRateLimit.limit(identifier);
+
+  if (!success) {
+    return NextResponse.json(
+      { error: "Too many requests. Please try again later." },
+      { status: 429 }
+    );
+  }
+
+  try {
+    const { email } = await request.json();
+
+    if (!email || typeof email !== "string") {
+      return NextResponse.json({ error: "Email is required" }, { status: 400 });
+    }
+
+    // Validate email format
+    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+    if (!emailRegex.test(email)) {
+      return NextResponse.json(
+        { error: "Invalid email format" },
+        { status: 400 }
+      );
+    }
+
+    // Check if email already exists
+    const existingEmail = await db
+      .select()
+      .from(waitlist)
+      .where(eq(waitlist.email, email.toLowerCase()))
+      .limit(1);
+
+    if (existingEmail.length > 0) {
+      return NextResponse.json(
+        { error: "Email already registered" },
+        { status: 409 }
+      );
+    }
+
+    // Add to waitlist
+    await db.insert(waitlist).values({
+      id: nanoid(),
+      email: email.toLowerCase(),
+    });
+
+    return NextResponse.json(
+      { message: "Successfully joined waitlist!" },
+      { status: 201 }
+    );
+  } catch (error) {
+    console.error("Waitlist signup error:", error);
+    return NextResponse.json(
+      { error: "Internal server error" },
+      { status: 500 }
+    );
+  }
+}

apps/web/src/components/landing/hero.tsx

@@ -5,8 +5,53 @@ import { Button } from "../ui/button";
 import { Input } from "../ui/input";
 import { ArrowRight } from "lucide-react";
 import Link from "next/link";
+import { useState } from "react";
+import { toast } from "sonner";
 
 export function Hero() {
+  const [email, setEmail] = useState("");
+  const [isSubmitting, setIsSubmitting] = useState(false);
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+
+    if (!email.trim()) {
+      toast.error("Email required", {
+        description: "Please enter your email address.",
+      });
+      return;
+    }
+
+    setIsSubmitting(true);
+
+    try {
+      const response = await fetch("/api/waitlist", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify({ email: email.trim() }),
+      });
+
+      const data = await response.json();
+
+      if (response.ok) {
+        toast.success("Welcome to the waitlist! 🎉");
+        setEmail("");
+      } else {
+        toast.error("Oops!", {
+          description: data.error || "Something went wrong. Please try again.",
+        });
+      }
+    } catch (error) {
+      toast.error("Network error", {
+        description: "Please check your connection and try again.",
+      });
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
   return (
     <div className="relative min-h-screen flex flex-col items-center justify-center text-center px-4">
       <motion.div
@@ -45,15 +90,25 @@ export function Hero() {
           animate={{ opacity: 1 }}
           transition={{ delay: 0.6, duration: 0.8 }}
         >
-          <form className="flex gap-3 w-full max-w-lg">
+          <form onSubmit={handleSubmit} className="flex gap-3 w-full max-w-lg">
             <Input
               type="email"
               placeholder="Enter your email"
               className="h-11 text-base flex-1"
+              value={email}
+              onChange={(e) => setEmail(e.target.value)}
+              disabled={isSubmitting}
               required
             />
-            <Button type="submit" size="lg" className="px-6 h-11 text-base">
-              <span className="relative z-10">Join waitlist</span>
+            <Button
+              type="submit"
+              size="lg"
+              className="px-6 h-11 text-base"
+              disabled={isSubmitting}
+            >
+              <span className="relative z-10">
+                {isSubmitting ? "Joining..." : "Join waitlist"}
+              </span>
               <ArrowRight className="relative z-10 ml-0.5 h-4 w-4 inline-block" />
             </Button>
           </form>

apps/web/src/lib/db/schema.ts

@@ -59,3 +59,11 @@ export const verifications = pgTable("verifications", {
     () => /* @__PURE__ */ new Date()
   ),
 }).enableRLS();
+
+export const waitlist = pgTable("waitlist", {
+  id: text("id").primaryKey(),
+  email: text("email").notNull().unique(),
+  createdAt: timestamp("created_at")
+    .$defaultFn(() => /* @__PURE__ */ new Date())
+    .notNull(),
+}).enableRLS();

apps/web/src/lib/rate-limit.ts

@@ -0,0 +1,14 @@
+// lib/rate-limit.ts
+import { Ratelimit } from "@upstash/ratelimit";
+import { Redis } from "@upstash/redis";
+
+const redis = new Redis({
+  url: process.env.UPSTASH_REDIS_REST_URL!,
+  token: process.env.UPSTASH_REDIS_REST_TOKEN!,
+});
+
+export const waitlistRateLimit = new Ratelimit({
+  redis,
+  limiter: Ratelimit.slidingWindow(5, "1 m"), // 5 requests per minute
+  analytics: true,
+});