"use client";

import type { ReactNode } from "react";
import Link from "next/link";
import Image from "next/image";
import { Reveal } from "./Reveal";
import { useNewsletterSignup } from "../lib/useNewsletterSignup";

// Same lock icon + copy as /challenge's and /newsletter's EmailCapture —
// unified across all newsletter-signup forms instead of each having its
// own wording/color for this trust note.
function LockIcon() {
  return (
    <svg width="14" height="14" viewBox="0 0 14 14" fill="none" className="shrink-0">
      <rect x="2" y="6" width="10" height="7" rx="1.5" stroke="#888" strokeWidth="1.3" />
      <path d="M4.5 6V4.5a2.5 2.5 0 0 1 5 0V6" stroke="#888" strokeWidth="1.3" />
    </svg>
  );
}

type NewsletterProps = {
  title?: ReactNode;
  description?: string;
};

/**
 * Reused as-is (same bordered/muted panel + icon-decoration + form
 * pattern) on both Home and /newsletter (the "Impulse & Tipps" page) —
 * their Figma frames use the exact same newsletter-inner component
 * instance, just with different copy, so title/description are props
 * instead of a second near-duplicate component.
 */
export function Newsletter({
  title = <>Starte mit einer Woche voller Klarheit<span className="text-brand">.</span></>,
  description = "Melde dich an und bekommst 7 kurze Impulse direkt ins Postfach – in ein paar Minuten gelesen, sofort im Alltag umsetzbar.",
}: NewsletterProps = {}) {
  const { email, emailError, consent, handleConsentChange, status, error, successMessage, emailRef, handleEmailChange, handleEmailBlur, handleSubmit } =
    useNewsletterSignup("newsletter-page");

  return (
    <section className="py-16 w-full">

      {/* Outer section padding — same fluid horizontal padding as all other sections */}
      <div className="px-[var(--layout-padding-x)] w-full">

        {/* Rounded card: cream bg, stacks below sm (moved down from the old md:) */}
        <Reveal className="bg-bg-muted flex flex-col sm:flex-row gap-8 sm:gap-12 items-center px-8 py-8 sm:py-0 rounded-md w-full">

          {/* Left: copy — fixed width from sm+ so the form always gets the remaining space.
              Icon+text stacked (icon on top, centered) below sm: — side by
              side they squeezed the text into a narrow column on a phone
              (icon width + gap eating most of the card's inner width),
              wrapping awkwardly. Row layout with the icon beside the text
              is fine again from sm+, where the fixed copy-column width
              leaves real room. */}
          <div className="flex flex-col items-center gap-4 text-center w-full sm:flex-row sm:items-start sm:gap-8 sm:text-left sm:w-[var(--newsletter-copy-width)] sm:py-4 sm:shrink-0">

            {/* Decorative envelope icon, tilted -4° as per design.
                w-[4rem], not w-16 — this project's --spacing-16 is a
                fluid token (floors to 40px below 768px, see globals.css),
                so pairing w-16 with the fixed h-[3.438rem] squished the
                icon to a 40:55 box on mobile instead of the SVG's native
                64:55.0096 (it has preserveAspectRatio="none", so it
                actually stretches to whatever box it's given — fixed
                2026-07-24). */}
            <div className="flex items-center justify-center shrink-0 w-[4.23rem] h-[3.71rem]">
              <div className="-rotate-4 -scale-y-100">
                <Image
                  alt=""
                  src="/newsletter-icon.svg"
                  width={64}
                  height={55}
                  className="w-[4rem] h-[3.438rem] block"
                />
              </div>
            </div>

            {/* Heading + body */}
            <div className="flex flex-col gap-4 flex-1 min-w-0 text-text-primary">
              <p
                className="font-semibold text-h-section leading-normal"
                style={{ fontFamily: "var(--font-lora)" }}
              >
                {title}
              </p>
              <p className="font-normal text-body leading-6">
                {description}
              </p>
            </div>
          </div>

          {/* Right: form — takes remaining space, centered vertically from sm+ */}
          <div className="flex w-full sm:flex-1 items-center sm:self-stretch min-w-0">
            {status === "success" ? (
              <p className="text-body text-text-primary font-medium">{successMessage}</p>
            ) : (
              <form onSubmit={handleSubmit} className="flex flex-1 flex-col gap-4 min-w-0 w-full">

                {/* Input + submit button — stacked below lg:, a deliberate
                    exception to the site's sm: (640px) structural
                    consolidation, not a leftover of it. The card above
                    already goes side-by-side at sm: with a fixed-width
                    copy column (--newsletter-copy-width), which only
                    leaves ~128px for this form column at 640px and
                    ~197px at 768px — not enough room for input+button
                    side by side even at the new, lower floor. Stacked
                    through the whole 640-1023px range instead, side by
                    side again once the form column has real room (≈333px)
                    at lg:. */}
                <div className="flex flex-col lg:flex-row gap-4 items-stretch w-full">
                  <input
                    ref={emailRef}
                    type="email"
                    required
                    value={email}
                    onChange={(e) => handleEmailChange(e.target.value)}
                    onBlur={(e) => handleEmailBlur(e.target.value)}
                    placeholder="Deine E-Mail-Adresse"
                    aria-invalid={Boolean(emailError)}
                    className={`flex-1 min-w-0 bg-bg-white border rounded-sm px-6 py-3 text-body text-text-muted font-normal outline-none transition-colors ${
                      emailError ? "border-red-600 focus:border-red-600" : "border-border focus:border-brand"
                    }`}
                  />
                  <button
                    type="submit"
                    disabled={status === "submitting"}
                    className="shrink-0 bg-brand rounded-sm px-5 py-3 font-bold text-h4 text-text-primary tracking-[0.18px] whitespace-nowrap hover:brightness-95 active:scale-[0.97] transition-all focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-brand focus-visible:ring-offset-2 focus-visible:ring-offset-bg-muted disabled:opacity-60 disabled:pointer-events-none"
                  >
                    {status === "submitting" ? "Wird gesendet…" : "Jetzt anmelden"}
                  </button>
                </div>
                {emailError && (
                  <p className="text-label text-red-600 font-normal -mt-2">{emailError}</p>
                )}

                {/* Consent checkbox — required since this signup's legal
                    basis is consent (email marketing), not the "Ich achte
                    auf deine Daten" trust note alone. Same wording/pattern
                    as NewsletterModal's checkbox. */}
                <label className="flex gap-2 items-start cursor-pointer">
                  <input
                    type="checkbox"
                    required
                    checked={consent}
                    onChange={(e) => handleConsentChange(e.target.checked)}
                    className="size-4 shrink-0 mt-0.5 rounded-xs border border-border accent-brand"
                  />
                  <span className="text-label text-text-primary font-normal leading-normal">
                    Ich akzeptiere die{" "}
                    <Link
                      href="/datenschutz"
                      target="_blank"
                      rel="noopener noreferrer"
                      className="underline hover:text-brand"
                    >
                      Datenschutzerklärung
                    </Link>
                    .
                  </span>
                </label>

                {status === "error" && (
                  <p className="text-label text-red-600 font-normal">{error}</p>
                )}

                {/* Privacy note — same icon/copy/color as the other
                    newsletter forms (see /challenge's EmailCapture). */}
                <p className="flex items-center gap-1.5 text-label text-[#888] font-normal leading-normal">
                  <LockIcon />
                  Keine Werbung. Jederzeit abbestellbar.
                </p>
              </form>
            )}
          </div>

        </Reveal>
      </div>
    </section>
  );
}