import maplibregl from "maplibre-gl";

/**
 * Supprime tous les marqueurs
 */
export function clearAllMarkers(markersRef, expandedElRef) {
  if (markersRef.current) {
    for (const m of markersRef.current) {
      try {
        m.marker.remove();
      } catch {
        // ignore
      }
    }
  }
  markersRef.current = [];
  if (expandedElRef) {
    expandedElRef.current = null;
  }
}

/**
 * Crée un marqueur pour un post :
 * - état compact : petite bulle + pointe
 * - état étendu : gros post (carte) comme sur ton dessin
 */
export function createMarkerForPost(post, mapRef, markersRef, expandedElRef) {
  const map = mapRef.current;
  if (!map) return;

  // --- coordonnées ---
  const lat =
    typeof post.lat === "number"
      ? post.lat
      : typeof post.Lat === "number"
      ? post.Lat
      : typeof post.latitude === "number"
      ? post.latitude
      : null;

  const lon =
    typeof post.lon === "number"
      ? post.lon
      : typeof post.Lon === "number"
      ? post.Lon
      : typeof post.longitude === "number"
      ? post.longitude
      : null;

  if (lat == null || lon == null) {
    console.warn("post sans coordonnée:", post);
    return;
  }

  const title = (post.title || post.Title || "").trim() || "Untitled";
  const body =
    (post.snippet || post.Snippet || "").trim() ||
    (post.body || post.Body || "").trim() ||
    title;

  const author = (post.author || post.Author || "").trim() || "unknown";
  const created =
    (post.created_at || post.CreatedAt || "").toString().slice(0, 19);
  const category = (post.category || post.Category || "").toUpperCase() || "";
  const subCat = (post.sub_category || post.SubCategory || "").toString();

  const root = document.createElement("div");
  root.className = "post-pin post-pin--compact";

  function renderCompact() {
    root.className = "post-pin post-pin--compact";
    root.innerHTML = `
      <div class="post-pin-bubble">
        <div class="post-pin-dot"></div>
        <div class="post-pin-text">${escapeHtml(title)}</div>
      </div>
      <div class="post-pin-pointer-small"></div>
    `;
  }

  function renderExpanded() {
    root.className = "post-pin post-pin--expanded";
    root.innerHTML = `
      <div class="post-card">
        <div class="post-card-header">
          <div class="post-card-cat">
            ${escapeHtml(category || "NEWS")}
            ${subCat ? "· " + escapeHtml(subCat) : ""}
          </div>
          <div class="post-card-time">
            ${escapeHtml(created || "")}
          </div>
        </div>

        <div class="post-card-main">
          <div class="post-card-media">
            <div class="post-card-media-label">
              Image / Vidéo
            </div>
          </div>

          <div class="post-card-info">
            <div class="post-card-title">
              ${escapeHtml(title)}
            </div>
            <div class="post-card-meta">
              by ${escapeHtml(author)} · lat ${lat.toFixed(3)} · lon ${lon.toFixed(3)}
            </div>
            <div class="post-card-body">
              ${escapeHtml(body)}
            </div>
          </div>
        </div>

        <div class="post-card-footer">
          <button class="post-card-btn">Live</button>
          <button class="post-card-btn">Like</button>
          <button class="post-card-btn">Share</button>
          <button class="post-card-btn">Fix</button>
        </div>

        <div class="post-card-comments">
          Live chat / comments (placeholder)
        </div>
      </div>
      <div class="post-card-pointer"></div>
    `;
  }

  // état initial : compact
  renderCompact();

  const marker = new maplibregl.Marker({
    element: root,
    anchor: "bottom", // la pointe touche exactement la coordonnée
  })
    .setLngLat([lon, lat])
    .addTo(map);

  markersRef.current.push({ id: post.id, marker, el: root, post });

  root.addEventListener("click", (ev) => {
    ev.stopPropagation();

    // Fermer l'ancien gros post
    if (expandedElRef.current && expandedElRef.current !== root) {
      expandedElRef.current.__renderCompact &&
        expandedElRef.current.__renderCompact();
      expandedElRef.current = null;
    }

    // Toggle pour ce post
    const isExpanded = root.classList.contains("post-pin--expanded");
    if (isExpanded) {
      renderCompact();
      expandedElRef.current = null;
    } else {
      renderExpanded();
      expandedElRef.current = root;
      // on garde les fonctions pour pouvoir re-compactifier
      root.__renderCompact = renderCompact;
    }
  });
}

/* petite fonction pour éviter d’injecter du HTML sale */
function escapeHtml(str) {
  return String(str)
    .replace(/&/g, "&amp;")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;");
}