"use client";

import Link from "next/link";
import { useEffect, useState } from "react";
import {
  DEFAULT_COOKIE_PREFERENCES,
  readCookiePreferences,
  writeCookiePreferences,
} from "@/lib/cookies/preferences";
import { useSiteText } from "@/components/providers/site-text-provider";

export function CookieBanner() {
  const { t } = useSiteText();
  const [visible, setVisible] = useState(false);
  const titleId = "cookie-banner-title";
  const descriptionId = "cookie-banner-description";

  useEffect(() => {
    if (readCookiePreferences() !== null) {
      return;
    }

    let timeoutId: number | null = null;
    const idleCallback = "requestIdleCallback" in window
      ? window.requestIdleCallback(() => {
          setVisible(true);
        }, { timeout: 2500 })
      : null;

    if (idleCallback === null) {
      timeoutId = window.setTimeout(() => {
        setVisible(true);
      }, 1800);
    }

    return () => {
      if (idleCallback !== null) {
        window.cancelIdleCallback(idleCallback);
      }
      if (timeoutId !== null) {
        window.clearTimeout(timeoutId);
      }
    };
  }, []);

  if (!visible) {
    return null;
  }

  return (
    <aside
      aria-live="polite"
      aria-labelledby={titleId}
      aria-describedby={descriptionId}
      className="fixed inset-x-3 bottom-2 z-[90] mx-auto w-auto max-w-sm rounded-2xl border border-[#ffd9d9] bg-white/95 p-2.5 shadow-[0_18px_44px_rgba(49,18,18,0.2)] backdrop-blur md:inset-x-4 md:bottom-4 md:w-full md:max-w-4xl md:p-4"
    >
      <div className="space-y-2 md:hidden">
        <div className="flex items-center justify-between gap-3">
          <p id={titleId} className="text-[10px] font-semibold uppercase tracking-[0.16em] text-[var(--accent-3)]">
            {t("cookie.banner.title")}
          </p>
          <Link href="/politique-cookies" className="text-[10px] font-semibold text-[var(--accent)] hover:text-[var(--accent-2)]">
            {t("cookie.banner.policy")}
          </Link>
        </div>
        <p id={descriptionId} className="text-[11px] leading-snug text-[var(--muted)]">
          Cookies essentiels actifs. Tu peux accepter ou personnaliser.
        </p>
        <div className="grid grid-cols-3 gap-1.5">
          <button
            type="button"
            onClick={() => {
              writeCookiePreferences({ ...DEFAULT_COOKIE_PREFERENCES, analytics: false });
              setVisible(false);
            }}
            className="rounded-xl border border-[#ffd8d8] bg-white px-2 py-1.5 text-[11px] font-semibold text-[var(--foreground)]"
          >
            {t("cookie.banner.reject")}
          </button>
          <button
            type="button"
            onClick={() => {
              writeCookiePreferences({ ...DEFAULT_COOKIE_PREFERENCES, analytics: true });
              setVisible(false);
            }}
            className="rounded-xl bg-[var(--accent)] px-2 py-1.5 text-[11px] font-semibold text-white hover:bg-[var(--accent-2)]"
          >
            {t("cookie.banner.acceptAll")}
          </button>
          <Link
            href="/preferences-cookies"
            className="rounded-xl border border-[#ffd8d8] bg-white px-2 py-1.5 text-center text-[11px] font-semibold text-[var(--foreground)]"
          >
            {t("cookie.banner.customize")}
          </Link>
        </div>
      </div>

      <div className="hidden md:flex md:flex-row md:items-end md:justify-between md:gap-4">
        <div className="space-y-2">
          <p className="text-[11px] font-semibold uppercase tracking-[0.16em] text-[var(--accent-3)]">
            {t("cookie.banner.title")}
          </p>
          <p className="max-w-2xl text-sm text-[var(--muted)]">{t("cookie.banner.text")}</p>
          <Link href="/politique-cookies" className="text-[11px] font-semibold text-[var(--accent)] hover:text-[var(--accent-2)]">
            {t("cookie.banner.policy")}
          </Link>
        </div>

        <div className="flex flex-wrap gap-2">
          <button
            type="button"
            onClick={() => {
              writeCookiePreferences({ ...DEFAULT_COOKIE_PREFERENCES, analytics: false });
              setVisible(false);
            }}
            className="rounded-xl border border-[#ffd8d8] bg-white px-3 py-2 text-sm font-semibold text-[var(--foreground)]"
          >
            {t("cookie.banner.reject")}
          </button>
          <button
            type="button"
            onClick={() => {
              writeCookiePreferences({ ...DEFAULT_COOKIE_PREFERENCES, analytics: true });
              setVisible(false);
            }}
            className="rounded-xl bg-[var(--accent)] px-3 py-2 text-sm font-semibold text-white hover:bg-[var(--accent-2)]"
          >
            {t("cookie.banner.acceptAll")}
          </button>
          <Link
            href="/preferences-cookies"
            className="rounded-xl border border-[#ffd8d8] bg-white px-3 py-2 text-center text-sm font-semibold text-[var(--foreground)]"
          >
            {t("cookie.banner.customize")}
          </Link>
        </div>
      </div>
    </aside>
  );
}
