"use client";

import { useEffect, useMemo, useState } from "react";
import { site } from "@/lib/site";

type Status = { state: "idle" | "submitting" | "success" | "error"; message?: string };

export default function ContactPage() {
  const [startedAt, setStartedAt] = useState<string>("");
  const [status, setStatus] = useState<Status>({ state: "idle" });

  useEffect(() => {
    setStartedAt(String(Date.now()));
  }, []);

  const disabledEarly = useMemo(() => {
    if (!startedAt) return true;
    const min = Number(process.env.NEXT_PUBLIC_CONTACT_MIN_SUBMIT_SECONDS ?? 3) || 3;
    return Date.now() - Number(startedAt) < min * 1000;
  }, [startedAt]);

  async function onSubmit(e: React.FormEvent<HTMLFormElement>) {
    e.preventDefault();
    setStatus({ state: "submitting" });

    const form = e.currentTarget;
    const formData = new FormData(form);
    const payload = Object.fromEntries(formData.entries());

    try {
      const res = await fetch("/api/contact", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(payload),
      });
      const json = (await res.json()) as { ok: boolean; error?: string };
      if (!res.ok || !json.ok) throw new Error(json.error || "Failed");
      setStatus({ state: "success", message: "Thanks! We’ll get back to you shortly." });
      form.reset();
      setStartedAt(String(Date.now())); // reset time trap
    } catch {
      setStatus({ state: "error", message: "Could not send. Please try again." });
    }
  }

  return (
    <section className="container py-12">
      <h1 className="text-3xl font-semibold tracking-tight">Contact</h1>
      <p className="mt-2 text-muted-foreground">
        Tell us what you want fixed or managed. We’ll confirm scope and start fast.
      </p>

      <form onSubmit={onSubmit} className="mt-8 space-y-5">
        {/* Honeypot (hidden from users & screen readers) */}
        <div aria-hidden className="hidden">
          <label htmlFor="website">Website</label>
          <input id="website" name="website" type="text" tabIndex={-1} autoComplete="off" />
        </div>

        {/* Time trap */}
        <input type="hidden" name="startedAt" value={startedAt} readOnly />

        <div className="grid gap-4 sm:grid-cols-2">
          <div className="flex flex-col gap-2">
            <label htmlFor="name" className="text-sm font-medium">
              Name<span className="text-red-600"> *</span>
            </label>
            <input
              id="name"
              name="name"
              required
              className="rounded-xl border bg-white px-3 py-2 outline-none ring-2 ring-transparent focus:ring-primary"
              placeholder="Jane Doe"
            />
          </div>
          <div className="flex flex-col gap-2">
            <label htmlFor="email" className="text-sm font-medium">
              Email<span className="text-red-600"> *</span>
            </label>
            <input
              id="email"
              name="email"
              type="email"
              required
              className="rounded-xl border bg-white px-3 py-2 outline-none ring-2 ring-transparent focus:ring-primary"
              placeholder="jane@company.com"
              inputMode="email"
              autoComplete="email"
            />
          </div>
        </div>

        <div className="flex flex-col gap-2">
          <label htmlFor="company" className="text-sm font-medium">
            Company
          </label>
          <input
            id="company"
            name="company"
            className="rounded-xl border bg-white px-3 py-2 outline-none ring-2 ring-transparent focus:ring-primary"
            placeholder="Company B.V."
            autoComplete="organization"
          />
        </div>

        <div className="flex flex-col gap-2">
          <label htmlFor="message" className="text-sm font-medium">
            What do you need?<span className="text-red-600"> *</span>
          </label>
          <textarea
            id="message"
            name="message"
            required
            rows={6}
            className="rounded-xl border bg-white px-3 py-2 outline-none ring-2 ring-transparent focus:ring-primary"
            placeholder="Briefly describe the problem or goal. Links are optional."
          />
        </div>

        <div className="flex items-start justify-between gap-4">
          <p className="text-xs text-muted-foreground">
            By submitting, you agree we can contact you about your request. We don’t sell data.
          </p>
          <button
            type="submit"
            disabled={status.state === "submitting" || disabledEarly}
            className="inline-flex min-w-[9rem] items-center justify-center rounded-xl bg-primary px-4 py-2 text-primary-foreground transition-opacity disabled:cursor-not-allowed disabled:opacity-60"
          >
            {status.state === "submitting" ? "Sending..." : "Send"}
          </button>
        </div>

        {status.state === "success" && (
          <div role="status" className="rounded-xl border border-green-200 bg-green-50 px-3 py-2 text-sm text-green-700">
            {status.message}
          </div>
        )}
        {status.state === "error" && (
          <div role="alert" className="rounded-xl border border-red-200 bg-red-50 px-3 py-2 text-sm text-red-700">
            {status.message}
          </div>
        )}
      </form>

      <div className="mt-10 text-sm text-muted-foreground">
        Prefer email? Reach us at <a className="underline" href={`mailto:${site.contact.email}`}>{site.contact.email}</a>.
      </div>
    </section>
  );
}