---
// Centre - HAUT : Carte O mindmap (V1.3-D : onglet Chatbot retire, bandeau "Sommaire editorial" + legende).
//          MILIEU : preview article (V1.2-P) - inseree au clic journal-item-click.
//          BAS  : iframe carte AEP (toujours visible).
// V1.3-D : ChatbotV2 retire du DOM (backlog V2). Pour reactivation -> reintroduire le tab + panel.
import CarteOWrapper from '../vue/CarteOWrapper.vue';
import EmbedDynamique from '../vue/EmbedDynamique.vue';
import PreviewArticle from '../vue/PreviewArticle.vue';
---
<!--
  V1.2-P : Col centre = flex column container.
  - Default : Carte O (1/3) + iframe AEP (2/3), pas de scroll vertical (h-full).
  - Preview ouverte : Carte O (33vh fixe) + Preview (auto) + iframe AEP (67vh fixe), overflow-y-auto.
  Flex-basis dynamique pilote via JS.
-->
<div
  id="col-centre-grid"
  class="flex flex-col gap-2 p-2"
  data-preview-open="false"
  style="height: 100%; overflow-y: hidden;"
>
  <!-- HAUT (default flex-1 base 33%) : V1.3-D bandeau "Sommaire editorial" + legende + Carte O plein espace -->
  <section
    id="col-centre-haut"
    class="border border-neutral-200 rounded flex flex-col overflow-hidden bg-white"
    style="min-height: 0; flex: 1 1 33%;"
  >
    <!-- V1.3-D : bandeau header (titre gauche + legende droite) -->
    <header
      class="flex items-center justify-between gap-3 px-3 py-2 border-b border-neutral-200 shrink-0"
      style="font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;"
    >
      <span class="text-xs truncate" style="color: #475569;">
        Sommaire éditorial d'architecture d'écologie politique
      </span>
      <ul class="flex items-center gap-3 shrink-0 text-xs" style="color: #475569;" aria-label="Légende">
        <li class="flex items-center gap-1.5">
          <span
            aria-hidden="true"
            style="width: 8px; height: 8px; border-radius: 999px; background: #0F172A; display: inline-block;"
          ></span>
          <span>publié</span>
        </li>
        <li class="flex items-center gap-1.5">
          <span
            aria-hidden="true"
            style="width: 8px; height: 8px; border-radius: 999px; background: transparent; border: 1px solid #0F172A; display: inline-block;"
          ></span>
          <span>à venir</span>
        </li>
        <li class="flex items-center gap-1.5">
          <span
            aria-hidden="true"
            style="width: 8px; height: 8px; border-radius: 999px; background: #B45309; display: inline-block;"
          ></span>
          <span>projet</span>
        </li>
      </ul>
    </header>

    <div class="flex-1 overflow-hidden relative">
      <div id="panel-mindmap" class="absolute inset-0">
        <CarteOWrapper client:visible />
      </div>
    </div>
  </section>

  <!-- Drag handle desktop - redimensionnement vertical md+ -->
  <div
    id="col-centre-drag-handle"
    class="hidden md:flex items-center justify-center h-2 cursor-row-resize hover:bg-neutral-200 transition-colors w-full -mt-1 -mb-1 shrink-0"
    aria-hidden="true"
  >
    <span class="block w-10 h-0.5 bg-neutral-300 rounded-full"></span>
  </div>

  <!-- Poignee repli zone HAUT - mobile only -->
  <button
    id="col-centre-poignee"
    type="button"
    aria-label="Replier ou deployer la Carte O"
    class="md:hidden flex items-center justify-center h-6 bg-neutral-100 border-y border-neutral-200 cursor-pointer w-full -mt-2 -mb-2 hover:bg-neutral-200 transition-colors shrink-0"
  >
    <span class="block w-8 h-0.5 bg-neutral-400 rounded-full"></span>
  </button>

  <!-- MILIEU (V1.2-P) : preview article inseree entre Carte O et iframe AEP.
       Pas de border ici - PreviewArticle.vue gere son propre conteneur.
       shrink-0 pour preserver sa taille auto, sinon flex pourrait l'ecraser. -->
  <div id="col-centre-preview-slot" class="shrink-0" style="display: contents;">
    <PreviewArticle client:visible />
  </div>

  <!-- BAS (default flex-1 base 67%) : iframe carte AEP toujours visible -->
  <section
    id="col-centre-bas"
    class="border border-neutral-200 rounded overflow-hidden bg-white"
    style="min-height: 0; flex: 1 1 67%;"
  >
    <div class="h-full min-h-[60vh] md:min-h-[400px]">
      <EmbedDynamique client:visible />
    </div>
  </section>
</div>

<script>
  // Poignee repli zone HAUT (mobile only)
  const grid = document.getElementById('col-centre-grid');
  const haut = document.getElementById('col-centre-haut');
  const bas = document.getElementById('col-centre-bas');
  const poignee = document.getElementById('col-centre-poignee');

  // Sauvegarde flex-basis defaults pour restaure apres fermeture preview
  let defaultHautFlex = '1 1 33%';
  let defaultBasFlex = '1 1 67%';

  const applyRepliState = (replie: boolean) => {
    if (!grid || !haut) return;
    if (grid.dataset.previewOpen === 'true') return; // skip si preview ouverte
    if (replie) {
      haut.style.flex = '0 0 0%';
      haut.style.overflow = 'hidden';
      haut.style.minHeight = '0';
      poignee?.setAttribute('aria-label', 'Deployer la Carte O');
    } else {
      haut.style.flex = defaultHautFlex;
      haut.style.overflow = '';
      haut.style.minHeight = '0';
      poignee?.setAttribute('aria-label', 'Replier la Carte O');
    }
  };

  const savedRepli = sessionStorage.getItem('tf-haut-replie');
  applyRepliState(savedRepli === 'true');

  poignee?.addEventListener('click', () => {
    const current = sessionStorage.getItem('tf-haut-replie') === 'true';
    const next = !current;
    sessionStorage.setItem('tf-haut-replie', String(next));
    applyRepliState(next);
  });

  // V1.2-P : preview ouverte = container scrollable, Carte O et iframe AEP figes en vh.
  const applyPreviewState = (open: boolean) => {
    if (!grid || !haut || !bas) return;
    grid.dataset.previewOpen = String(open);
    if (open) {
      // Memorise les flex actuels avant override (au cas ou l'user a drag-resize)
      const curHautFlex = haut.style.flex;
      const curBasFlex = bas.style.flex;
      if (curHautFlex && !curHautFlex.startsWith('0 0')) defaultHautFlex = curHautFlex;
      if (curBasFlex) defaultBasFlex = curBasFlex;

      // Figer hauteurs : Carte O 33vh, iframe AEP 67vh - on perd le flex
      haut.style.flex = '0 0 33vh';
      bas.style.flex = '0 0 67vh';
      // Le container reste a 100% du parent (overflow-hidden de <main>),
      // mais on active le scroll interne pour passer Carte O -> Preview -> iframe AEP.
      grid.style.height = '100%';
      grid.style.minHeight = '';
      grid.style.overflowY = 'auto';
    } else {
      haut.style.flex = defaultHautFlex;
      bas.style.flex = defaultBasFlex;
      grid.style.height = '100%';
      grid.style.minHeight = '';
      grid.style.overflowY = 'hidden';
    }
  };

  window.addEventListener('journal-item-click', () => {
    applyPreviewState(true);
    // Scroll vers la preview apres mount
    requestAnimationFrame(() => {
      const preview = document.querySelector('.preview-article');
      if (preview && grid) {
        const previewTop = (preview as HTMLElement).offsetTop;
        grid.scrollTo({ top: Math.max(0, previewTop - 8), behavior: 'smooth' });
      }
    });
  });
  window.addEventListener('preview-close', () => {
    applyPreviewState(false);
  });

  // Drag-resize desktop (>=768px) - desactive quand preview ouverte
  const dragHandle = document.getElementById('col-centre-drag-handle');

  if (dragHandle && grid && haut && bas) {
    let isDragging = false;
    let startY = 0;
    let startHautH = 0;
    let containerH = 0;

    dragHandle.addEventListener('mousedown', (e: MouseEvent) => {
      if (grid.dataset.previewOpen === 'true') return;
      if (sessionStorage.getItem('tf-haut-replie') === 'true') return;
      isDragging = true;
      startY = e.clientY;
      startHautH = haut.getBoundingClientRect().height;
      containerH = grid.getBoundingClientRect().height;
      document.body.style.cursor = 'row-resize';
      document.body.style.userSelect = 'none';
      e.preventDefault();
    });

    document.addEventListener('mousemove', (e: MouseEvent) => {
      if (!isDragging) return;
      const delta = e.clientY - startY;
      const newHautH = Math.min(Math.max(startHautH + delta, containerH * 0.2), containerH * 0.8);
      const hautPct = (newHautH / containerH) * 100;
      const basPct = 100 - hautPct;
      haut.style.flex = `1 1 ${hautPct.toFixed(1)}%`;
      bas.style.flex = `1 1 ${basPct.toFixed(1)}%`;
    });

    document.addEventListener('mouseup', () => {
      if (isDragging) {
        isDragging = false;
        document.body.style.cursor = '';
        document.body.style.userSelect = '';
        const hf = haut.style.flex;
        const bf = bas.style.flex;
        if (hf) {
          sessionStorage.setItem('tf-centre-haut-flex', hf);
          defaultHautFlex = hf;
        }
        if (bf) {
          sessionStorage.setItem('tf-centre-bas-flex', bf);
          defaultBasFlex = bf;
        }
      }
    });

    // Restaurer position depuis sessionStorage
    const savedHF = sessionStorage.getItem('tf-centre-haut-flex');
    const savedBF = sessionStorage.getItem('tf-centre-bas-flex');
    if (savedHF && savedBF && sessionStorage.getItem('tf-haut-replie') !== 'true') {
      haut.style.flex = savedHF;
      bas.style.flex = savedBF;
      defaultHautFlex = savedHF;
      defaultBasFlex = savedBF;
    }

    // Double-click sur drag handle = reset default 1/3 + 2/3
    dragHandle.addEventListener('dblclick', () => {
      haut.style.flex = '1 1 33%';
      bas.style.flex = '1 1 67%';
      sessionStorage.removeItem('tf-centre-haut-flex');
      sessionStorage.removeItem('tf-centre-bas-flex');
      defaultHautFlex = '1 1 33%';
      defaultBasFlex = '1 1 67%';
    });
  }

  // V1.3-D : tabs Chatbot retires, plus de toggle a gerer (un seul panel Carte O).
</script>