"use client";

import { useState } from "react";

export function NewsletterForm() {
  const [email, setEmail] = useState("");
  const [status, setStatus] = useState<"idle" | "loading" | "done" | "error">(
    "idle"
  );

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    if (!email) return;
    setStatus("loading");
    try {
      const res = await fetch("/api/newsletter", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ email }),
      });
      setStatus(res.ok ? "done" : "error");
    } catch {
      setStatus("error");
    }
  }

  if (status === "done") {
    return <p className="text-xs text-amber-400">You&apos;re on the list.</p>;
  }

  return (
    <div>
      <form onSubmit={handleSubmit} className="flex gap-2">
        <input
          type="email"
          value={email}
          onChange={(e) => setEmail(e.target.value)}
          placeholder="your@email.com"
          required
          disabled={status === "loading"}
          className="min-w-0 flex-1 rounded-md border border-zinc-800 bg-zinc-950 px-3 py-2 text-xs text-zinc-200 placeholder-zinc-600 focus:border-amber-500/50 focus:outline-none disabled:opacity-50"
        />
        <button
          type="submit"
          disabled={status === "loading"}
          className="rounded-md border border-amber-500/50 bg-amber-500/10 px-3 py-2 text-xs font-semibold text-amber-400 hover:bg-amber-500/20 disabled:opacity-50"
        >
          {status === "loading" ? "..." : "Subscribe"}
        </button>
      </form>
      {status === "error" && (
        <p className="mt-2 text-[11px] text-red-400">Something went wrong. Try again.</p>
      )}
    </div>
  );
}