const $ = (s) => document.querySelector(s);
const debounce = (fn, d = 250) => {
  let t;
  return (...a) => {
    clearTimeout(t);
    t = setTimeout(() => fn(...a), d);
  };
};

async function fetchSuggest(field, q) {
  const url = `/?ajax=suggest&field=${encodeURIComponent(field)}&q=${encodeURIComponent(q)}`;
  const res = await fetch(url, {
    headers: { "X-Requested-With": "XMLHttpRequest" },
  });
  if (!res.ok) return [];
  return res.json();
}

function bindSuggest(inputEl, listEl, field) {
  const render = (items) => {
    listEl.innerHTML = items.map((v) => `<li role="option">${v}</li>`).join("");
    listEl.hidden = items.length === 0;
  };
  inputEl.addEventListener(
    "input",
    debounce(async (e) => {
      const q = e.target.value.trim();
      if (!q) {
        listEl.hidden = true;
        listEl.innerHTML = "";
        return;
      }
      const items = await fetchSuggest(field, q);
      render(items);
    }, 200),
  );

  listEl.addEventListener("click", (e) => {
    if (e.target.tagName === "LI") {
      inputEl.value = e.target.textContent;
      listEl.hidden = true;
    }
  });

  document.addEventListener("click", (e) => {
    if (!listEl.contains(e.target) && e.target !== inputEl) {
      listEl.hidden = true;
    }
  });
}

bindSuggest($("#specialite"), $("#sg-specialite"), "specialite");
bindSuggest($("#ville"), $("#sg-ville"), "ville");

$("#submitBtn")?.addEventListener("click", () => {
  const sp = $("#specialite")?.value?.trim() || "";
  const vi = $("#ville")?.value?.trim() || "";
  const url = `result_search.php?specialite=${encodeURIComponent(sp)}&ville=${encodeURIComponent(vi)}`;
  window.location.href = url;
});

document.querySelectorAll(".searchbar input").forEach((i) => {
  i.addEventListener("keydown", (e) => {
    if (e.key === "Enter") {
      e.preventDefault();
      $("#submitBtn")?.click();
    }
  });
});

if ("serviceWorker" in navigator) {
  window.addEventListener("load", () => {
    navigator.serviceWorker
      .register("/sw.js", { scope: "/" })
      .catch(console.error);
  });
}

(() => {
  const btn = document.getElementById("pwaInstallBtn");
  const iosHint = document.getElementById("pwaIosHint");
  const iosClose = document.getElementById("pwaIosClose");

  let deferredPrompt = null;

  function isInstalled() {
    const mm =
      window.matchMedia &&
      window.matchMedia("(display-mode: standalone)").matches;
    const iosStandalone = !!window.navigator.standalone;
    return mm || iosStandalone;
  }

  function isMobile() {
    return window.matchMedia && window.matchMedia("(max-width: 991px)").matches;
  }

  function isIos() {
    return /iphone|ipad|ipod/i.test(navigator.userAgent);
  }
  function isSafari() {
    const ua = navigator.userAgent.toLowerCase();
    return (
      ua.includes("safari") &&
      !ua.includes("crios") &&
      !ua.includes("fxios") &&
      !ua.includes("edgios")
    );
  }

  function hideAll() {
    if (btn) btn.classList.add("d-none");
    if (iosHint) iosHint.classList.add("d-none");
  }

  function showBtn() {
    if (!btn) return;
    btn.classList.remove("d-none");
  }

  window.addEventListener("beforeinstallprompt", (e) => {
    if (!isMobile() || isInstalled()) return;
    e.preventDefault();
    deferredPrompt = e;
    showBtn();
  });

  btn?.addEventListener("click", async () => {
    if (isInstalled()) return hideAll();

    if (deferredPrompt) {
      deferredPrompt.prompt();
      await deferredPrompt.userChoice.catch(() => {});
      deferredPrompt = null;
      hideAll();
      return;
    }

    if (isIos() && isSafari()) {
      iosHint?.classList.remove("d-none");
      return;
    }
  });

  iosClose?.addEventListener("click", () => {
    iosHint?.classList.add("d-none");
    localStorage.setItem("pwa_ios_hint_seen", Date.now().toString());
  });

  window.addEventListener("appinstalled", () => hideAll());

  document.addEventListener("DOMContentLoaded", () => {
    if (!isMobile() || isInstalled()) return hideAll();

    const seen = Number(localStorage.getItem("pwa_ios_hint_seen") || "0");
    const days7 = 7 * 24 * 60 * 60 * 1000;

    if (isIos() && isSafari()) {
      if (!seen || Date.now() - seen > days7) showBtn();
    }
  });
})();