{% extends "base.html" %}
{% block title %}{{ screen.name }} — {{ game.name }}{% endblock %}
{% block content_class %}content-builder{% endblock %}
{% block body_class %}builderBody{% endblock %}
{% block extra_head %}
<link rel="stylesheet" href="{{ google_fonts_link }}">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
{% endblock %}
{% block breadcrumb %}
<a class="crumb" href="{{ url_for('game_dashboard', slug=game.slug) }}">{{ game.name }}</a>
<span class="crumb-sep">/</span>
<a class="crumb" href="{{ url_for('screens_list', slug=game.slug) }}">Écrans</a>
<span class="crumb-sep">/</span><span class="crumb">{{ screen.name }}</span>
{% endblock %}
{% block content %}
<div class="fieldRow" style="align-items:center; justify-content:space-between;">
  <form method="post" action="{{ url_for('screen_rename', slug=game.slug, screen_id=screen.id) }}" class="fieldRow" style="align-items:center; margin:0;">
    <input type="text" name="name" value="{{ screen.name }}" required style="font-size:16px; font-weight:700; width:auto;">
    <button type="submit" class="smallBtn">Renommer</button>
  </form>
  {% if not screen.is_template %}
  <a class="smallBtn primary" href="{{ url_for('game_play', slug=game.slug) }}" target="_blank">▶️ Jouer depuis le début</a>
  {% endif %}
</div>

{% if screen.is_template %}
<p class="hint" style="background:#1c2130; border:1px solid #2b3140; border-radius:8px; padding:10px 14px; margin:10px 0;">
  🧩 Contenu d'un élément de jeu réutilisable.
</p>
{% endif %}

<div class="builder3" id="builder3">
  {% set el = elements|selectattr("id", "equalto", selected_id)|first if selected_id else none %}
  <!-- Panneau gauche : ajouter un élément (icônes, sans jargon technique) -->
  <div class="builderPanel">
    {% if selected_id and el and el.widget in container_widgets %}
    <p class="hint" style="background:#2a1f10; border:1px solid #6b4a12; border-radius:8px; padding:8px 12px; margin-bottom:10px;">
      ⚠️ Un conteneur est sélectionné. La grille ci-dessous pose l'élément directement sur l'écran, PAS à l'intérieur du conteneur — pour poser un élément dans le conteneur sélectionné, utilise plutôt <strong>« 📥 Ajouter DANS ce conteneur »</strong> dans le panneau de droite.
    </p>
    {% endif %}
    <details class="propGroup" open>
      <summary>Ajouter un élément sur l'écran</summary>
      <div class="propGroupBody">
    <div class="widgetGrid">
      {% for wkey, w in widgets.items() %}
      <form method="post" action="{{ url_for('element_add', slug=game.slug, screen_id=screen.id) }}" class="widgetBtnForm">
        <input type="hidden" name="widget" value="{{ wkey }}">
        <button type="submit" class="widgetBtn" title="{{ w.label }}">
          <span class="widgetIcon">{{ w.icon }}</span>
          <span class="widgetLabel">{{ w.label }}</span>
        </button>
      </form>
      {% endfor %}
    </div>
      </div>
    </details>

    <!-- Menu rétractable dédié aux éléments de jeu personnalisés (Personnage,
         Outil, IA...) : chacun a désormais SA PROPRE tuile, avec son nom,
         plutôt qu'une unique tuile générique "Élément de jeu" qui ajoutait
         toujours le premier du catalogue sans laisser choisir lequel. -->
    <details class="propGroup" {{ 'open' if element_types else '' }}>
      <summary>🧩 Mes éléments de jeu{{ ' (' ~ element_types|length ~ ')' if element_types else '' }}</summary>
      <div class="propGroupBody">
    {% if element_types %}
    <div class="widgetGrid">
      {% for et in element_types %}
      <form method="post" action="{{ url_for('element_add', slug=game.slug, screen_id=screen.id) }}" class="widgetBtnForm">
        <input type="hidden" name="widget" value="__catalogue__">
        <input type="hidden" name="element_type_id" value="{{ et.id }}">
        <button type="submit" class="widgetBtn" title="{{ et.name }}">
          <span class="widgetIcon">{{ et.icon or '🧩' }}</span>
          <span class="widgetLabel">{{ et.name }}</span>
        </button>
      </form>
      {% endfor %}
    </div>
    {% else %}
    <p class="hint">Pas encore d'élément de jeu personnalisé — <a href="{{ url_for('element_types', slug=game.slug) }}">crées-en un</a>.</p>
    {% endif %}
      </div>
    </details>

    <h2>Éléments de cet écran</h2>
    {% if top_level_elements %}
    <div class="list">
      {% for el in top_level_elements %}
      <a class="listRow {{ 'selected' if el.id == selected_id else '' }}" id="listrow-{{ el.id }}"
         href="{{ url_for('screen_edit', slug=game.slug, screen_id=screen.id, selected=el.id) }}">
        <div class="rowTitle">{{ widgets.get(el.widget, {}).get('icon', '❔') }} {{ el|elabel }}</div>
        <div class="rowSub">{{ (el.content or '—')[:30] }}</div>
      </a>
      {% if el.widget in container_widgets and children_of.get(el.id) %}
      <div class="childList">
        {% for child in children_of.get(el.id) %}
        <a class="listRow childRow {{ 'selected' if child.id == selected_id else '' }}"
           href="{{ url_for('screen_edit', slug=game.slug, screen_id=screen.id, selected=child.id) }}">
          <div class="rowTitle">↳ {{ widgets.get(child.widget, {}).get('icon', '❔') }} {{ child|elabel }}</div>
          <div class="rowSub">{{ (child.content or '—')[:26] }}</div>
        </a>
        {% endfor %}
      </div>
      {% endif %}
      {% endfor %}
    </div>
    {% else %}
    <p class="hint">Aucun élément pour l'instant.</p>
    {% endif %}
  </div>

  <!-- Centre : l'écran, en très grand -->
  <div class="builderCanvasArea">
    {% set current_aspect = screen.preview_aspect or '9/16' %}
    <div class="canvasToolbar">
      <span class="hint">Aperçu :</span>
      <button type="button" class="smallBtn aspectBtn {{ 'active' if current_aspect == '9/16' else '' }}" data-aspect="9/16">📱 Portrait</button>
      <button type="button" class="smallBtn aspectBtn {{ 'active' if current_aspect == '16/9' else '' }}" data-aspect="16/9">🖥️ Paysage</button>
      <button type="button" class="smallBtn aspectBtn {{ 'active' if current_aspect == '1/1' else '' }}" data-aspect="1/1">◻️ Carré</button>
    </div>
    <div class="canvasFrame">
      <div class="canvas" id="canvas" style="aspect-ratio:{{ current_aspect }};">
        {% for el in top_level_elements %}
        <div class="canvasElement {{ 'selected' if el.id == selected_id else '' }}" id="el-{{ el.id }}" style="{{ el|elstyle }}" data-anim-target="{{ el.id }}"
             onmousedown="onElementMouseDown(event, {{ el.id }})">
          <div class="canvasElementInner" style="{{ el|eltransform }}">{{ el.rendered_html|safe }}</div>
          <div class="resizeHandle" onmousedown="onResizeMouseDown(event, {{ el.id }})"></div>
        </div>
        {% endfor %}
      </div>
    </div>
    <p class="hint" style="text-align:center;">Glisse pour déplacer, tire le coin pour redimensionner, clique pour sélectionner.</p>
  </div>

  <!-- Panneau droit : propriétés de l'élément sélectionné -->
  <div class="builderPanel builderPanelRight">
    {% if not selected_id %}
    <div class="hint" style="padding:20px 0;">Sélectionne un élément (sur l'écran ou dans la liste) pour voir et modifier ses propriétés ici.</div>
    {% else %}
      {% set el = elements|selectattr("id", "equalto", selected_id)|first %}
      {% if el %}
      {% set w = widgets.get(el.widget, {}) %}
      <div class="fieldRow" style="align-items:center; justify-content:space-between;">
        <h2 style="margin:0;">{{ w.get('icon','❔') }} {{ el|elabel }}{% if el.name %} <span class="hint">— {{ w.get('label', el.widget) }}</span>{% endif %}</h2>
        <form method="post" action="{{ url_for('element_delete', slug=game.slug, element_id=el.id) }}"
              onsubmit="return confirm('Supprimer cet élément ?');">
          <button type="submit" class="smallBtn danger">🗑️</button>
        </form>
      </div>
      <form method="post" action="{{ url_for('element_rename', slug=game.slug, element_id=el.id) }}" class="fieldRow" style="align-items:center; margin:6px 0;">
        <input type="text" name="name" value="{{ el.name or '' }}" placeholder="Donne un nom à cet élément" style="flex:1;">
        <button type="submit" class="smallBtn">Nommer</button>
      </form>
      <div class="fieldRow" style="align-items:center; margin:6px 0;">
        <label style="width:auto; margin-right:6px;">ID</label>
        <input type="text" value="elt-{{ el.id }}" readonly style="flex:1; opacity:0.7;">
      </div>

      {% if el.widget in container_widgets %}
      <details class="propGroup containerContentGroup" open>
        <summary>📥 Ajouter DANS ce conteneur</summary>
        <div class="propGroupBody">
      {% set children = children_of.get(el.id, []) %}
      {% if children %}
      <div class="list">
        {% for child in children %}
        <a class="listRow childRow {{ 'selected' if child.id == selected_id else '' }}"
           href="{{ url_for('screen_edit', slug=game.slug, screen_id=screen.id, selected=child.id) }}">
          <div class="rowTitle">↳ {{ widgets.get(child.widget, {}).get('icon', '❔') }} {{ child|elabel }}</div>
          <div class="rowSub">{{ (child.content or '—')[:26] }}</div>
        </a>
        {% endfor %}
      </div>
      {% else %}
      <p class="hint">Aucun élément à l'intérieur pour l'instant — ajoute-en un ci-dessous.</p>
      {% endif %}
      <div class="widgetGrid">
        {% for wkey, w in widgets.items() %}
        <form method="post" action="{{ url_for('element_add_child', slug=game.slug, parent_id=el.id) }}" class="widgetBtnForm">
          <input type="hidden" name="widget" value="{{ wkey }}">
          <button type="submit" class="widgetBtn" title="{{ w.label }}">
            <span class="widgetIcon">{{ w.icon }}</span>
            <span class="widgetLabel">{{ w.label }}</span>
          </button>
        </form>
        {% endfor %}
      </div>
        </div>
      </details>
      {% endif %}

      {% set size_ctrl_keys = ['child-width', 'child-height'] %}
      {% set size_ctrls = {} %}
      {% for c in selected_controls if c.key in size_ctrl_keys %}{% set _ = size_ctrls.update({c.key: c}) %}{% endfor %}

      <form method="post" action="{{ url_for('element_save', slug=game.slug, element_id=el.id) }}" id="propsForm" onsubmit="event.preventDefault(); return false;">
      <details class="propGroup" open>
        <summary>Position &amp; taille</summary>
        <div class="propGroupBody">
      <div class="posGrid">
        <label>X (%)<input type="number" id="pos-x" min="0" max="100" value="{{ el.x }}" {{ 'disabled' if el.parent_id else '' }}></label>
        <label>Y (%)<input type="number" id="pos-y" min="0" max="100" value="{{ el.y }}" {{ 'disabled' if el.parent_id else '' }}></label>
        {% if el.parent_id %}
        <label>Largeur
          <div class="sizeField">
            <input type="number" name="ctrl_child-width_value" min="0" value="{{ size_ctrls['child-width'].value.value or '' }}" placeholder="auto">
            <select name="ctrl_child-width_unit">
              <option value="%" {{ 'selected' if size_ctrls['child-width'].value.unit == '%' else '' }}>%</option>
              <option value="px" {{ 'selected' if size_ctrls['child-width'].value.unit == 'px' else '' }}>px</option>
            </select>
          </div>
        </label>
        <label>Hauteur
          <div class="sizeField">
            <input type="number" name="ctrl_child-height_value" min="0" value="{{ size_ctrls['child-height'].value.value or '' }}" placeholder="auto">
            <select name="ctrl_child-height_unit">
              <option value="%" {{ 'selected' if size_ctrls['child-height'].value.unit == '%' else '' }}>%</option>
              <option value="px" {{ 'selected' if size_ctrls['child-height'].value.unit == 'px' else '' }}>px</option>
            </select>
          </div>
        </label>
        {% else %}
        <label>Largeur (%)<input type="number" id="pos-w" min="1" max="100" value="{{ el.width }}"></label>
        <label>Hauteur (%)<input type="number" id="pos-h" min="1" max="100" value="{{ el.height }}"></label>
        {% endif %}
      </div>
      {% if el.parent_id %}
      <p class="hint">X/Y ne s'appliquent qu'à un élément posé directement sur l'écran — celui-ci suit la disposition de son conteneur. Largeur/Hauteur : laisser vide garde la taille automatique ; "%" (relatif au conteneur) convient à la plupart des cas, "px" pour une taille précise.</p>
      {% endif %}
        </div>
      </details>

        {% set ns = namespace(last_group=None, started=False) %}
        {% for c in selected_controls if c.key not in size_ctrl_keys %}
        {% if c.group != ns.last_group %}
        {% if ns.started %}
            </div>
          </details>
        {% endif %}
        <details class="propGroup" {{ 'open' if not ns.started else '' }}>
          <summary>{{ c.group or 'Propriétés' }}</summary>
          <div class="propGroupBody">
        {% set ns.last_group = c.group %}
        {% set ns.started = True %}
        {% endif %}
        <div class="controlRow">
          <label>{{ c.label }}</label>
          {% if c.type in ('text', 'url') %}
          <input type="text" name="ctrl_{{ c.key }}" value="{{ c.value }}" placeholder="{{ c.placeholder or '' }}" class="{{ 'uploadTextField' if c.allow_upload else '' }}" id="field-{{ c.key }}">
          {% if c.allow_upload %}
          <div class="uploadRow">
            <input type="file" class="uploadInput" accept="{{ c.upload_accept }}" data-target="field-{{ c.key }}">
            <span class="hint uploadStatus"></span>
          </div>
          <p class="hint">Colle une adresse (URL) ci-dessus, ou choisis un fichier sur ton ordinateur — il sera hébergé automatiquement avec ce jeu.</p>
          {% endif %}
          {% elif c.type == 'textarea' %}
          <textarea name="ctrl_{{ c.key }}" rows="4" placeholder="{{ c.placeholder or '' }}">{{ c.value }}</textarea>
          {% elif c.type == 'color' %}
          <input type="color" name="ctrl_{{ c.key }}" value="{{ c.value or c.default }}">
          {% elif c.type == 'slider' %}
          <div class="sliderRow">
            <input type="range" name="ctrl_{{ c.key }}" min="{{ c.min }}" max="{{ c.max }}" step="{{ c.step }}" value="{{ c.value }}"
                   oninput="this.nextElementSibling.textContent = this.value + '{{ c.unit }}'">
            <span class="sliderValue">{{ c.value }}{{ c.unit }}</span>
          </div>
          {% elif c.type == 'scale' %}
          <div class="sliderRow">
            <input type="range" name="ctrl_{{ c.key }}" min="{{ c.min }}" max="{{ c.max }}" step="{{ c.step }}" value="{{ c.value }}"
                   oninput="this.nextElementSibling.textContent = 'x' + this.value">
            <span class="sliderValue">x{{ c.value }}</span>
          </div>
          {% elif c.type in ('checkbox', 'toggle_token') %}
          <input type="checkbox" name="ctrl_{{ c.key }}" {{ 'checked' if c.value else '' }}>
          {% elif c.type == 'align' %}
          <div class="alignGroup">
            {% for val, icon in [('left','⬅️'),('center','⬛'),('right','➡️'),('justify','☰')] %}
            <label class="alignOption {{ 'active' if c.value == val else '' }}">
              <input type="radio" name="ctrl_{{ c.key }}" value="{{ val }}" {{ 'checked' if c.value == val else '' }} onchange="syncAlign(this)">
              {{ icon }}
            </label>
            {% endfor %}
          </div>
          {% elif c.type in ('select', 'preset') %}
          <select name="ctrl_{{ c.key }}">
            {% for opt in c.options %}
            <option value="{{ opt[0] }}" {{ 'selected' if c.value == opt[0] else '' }}>{{ opt[1] }}</option>
            {% endfor %}
          </select>
          {% endif %}
        </div>
        {% endfor %}
        {% if ns.started %}
          </div>
        </details>
        {% endif %}
        <div class="actionsRow"><span class="hint autosaveStatus" id="autosaveStatus">Enregistré automatiquement</span></div>
      </form>

      {% endif %}
    {% endif %}
  </div>
</div>

{% if not screen.is_template %}
<!-- Poignée de redimensionnement : visible seulement quand le panneau du bas
     est ouvert, on la tire à la souris pour régler sa hauteur. -->
<div class="flowResizeHandle" id="flowResizeHandle"></div>

<!-- Panneau bas, rétractable : logique de la scène (éditeur de flow à nœuds).
     Volontairement PAS un <details> natif : sa hauteur ouverte doit pouvoir
     être réglée à la souris (voir flowResizeHandle), ce qu'un <details> ne
     permet pas nativement. Absent pour un écran-modèle (élément de jeu) :
     ses déclencheurs référenceraient des éléments dont l'id change à chaque
     copie (voir instantiate_template_tree), donc une logique posée ici ne
     fonctionnerait plus une fois l'élément réutilisé. -->
<div class="flowPanel" id="flowPanel">
  <div class="flowPanelHeader" onclick="toggleFlowPanel()">
    <span class="flowToggleIcon">▸</span> 🔀 Logique de la scène — nœuds et connexions
  </div>
  <div class="flowPanelBody" id="flowPanelBody">
    <div class="flowToolbar">
      <button type="button" class="smallBtn" onclick="openNodeForm('trigger')">➕ Déclencheur</button>
      <button type="button" class="smallBtn" onclick="openNodeForm('condition')">➕ Condition</button>
      <button type="button" class="smallBtn" onclick="openNodeForm('action')">➕ Action</button>
      <span class="hint">Clique un point de sortie d'un nœud, puis le point d'entrée d'un autre nœud, pour les relier. Reclique une connexion pour la supprimer.</span>
    </div>

    <div id="nodeForm" class="nodeForm" style="display:none;">
      <div class="fieldRow" style="align-items:center; justify-content:space-between;">
        <strong id="nodeFormTitle">Nouveau nœud</strong>
        <button type="button" class="smallBtn" onclick="closeNodeForm()">✕</button>
      </div>

      <div id="nodeFormTrigger" style="display:none;">
        <label>Événement<select id="nf-trigger-event" onchange="toggleFlowTriggerFields()">
          {% for key, label in trigger_events %}
          <option value="{{ key }}">{{ label }}</option>
          {% endfor %}
        </select></label>
        <label id="nf-trigger-element-row">Élément<select id="nf-trigger-element">
          {% for e2 in elements %}
          <option value="{{ e2.id }}">{{ e2|elabel }} (elt-{{ e2.id }})</option>
          {% endfor %}
        </select></label>
        <p class="hint" id="nf-trigger-repeater-hint" style="display:none;"></p>
        <p class="hint" id="nf-trigger-affichage-hint" style="display:none;"></p>
      </div>

      <div id="nodeFormCondition" style="display:none;">
        {% if not definitions %}
        <p class="hint">Aucun objet défini dans ce jeu pour l'instant — <a href="{{ url_for('object_new', slug=game.slug) }}">crées-en un</a>.</p>
        {% else %}
        <label>Objet<select id="nf-cond-definition" onchange="onFlowDefinitionChange('cond')">
          {% for d in definitions %}
          <option value="{{ d.id }}">{{ d.name }}</option>
          {% endfor %}
        </select></label>
        <label>Ligne concernée<select id="nf-cond-row"></select></label>
        <label>Champ<select id="nf-cond-field" onchange="onFlowFieldChange()"></select></label>
        <label>Condition<select id="nf-cond-operator">
          {% for key, label in condition_operators %}
          <option value="{{ key }}">{{ label }}</option>
          {% endfor %}
        </select></label>
        <label>Valeur de comparaison<input type="text" id="nf-cond-value" placeholder="ex. 1, vrai, 10..."></label>

        <div id="nf-cond-extra-wrap">
          <label id="nf-cond-combinator-row" style="display:none;">Combiner les conditions avec
            <select id="nf-cond-combinator">
              <option value="et">ET (toutes les conditions doivent être vraies)</option>
              <option value="ou">OU (au moins une condition doit être vraie)</option>
            </select>
          </label>
          <div id="nf-cond-extra-clauses"></div>
          <button type="button" class="smallBtn" onclick="addFlowConditionClause()">+ Ajouter une condition</button>
        </div>
        {% endif %}
      </div>

      <div id="nodeFormAction" style="display:none;">
        <label>Type d'action<select id="nf-action-type" onchange="toggleFlowActionFields()">
          {% for key, label in action_type_labels.items() %}
          <option value="{{ key }}">{{ label }}</option>
          {% endfor %}
        </select></label>

        <select id="nf-action-target-screen" style="display:none;">
          {% for s in all_screens %}
          <option value="{{ s.id }}">{{ s.name }}</option>
          {% endfor %}
        </select>

        <div id="nf-action-element-fields" style="display:none;">
          <select id="nf-action-target-element">
            {% for e2 in elements %}
            <option value="{{ e2.id }}">{{ e2|elabel }} (elt-{{ e2.id }})</option>
            {% endfor %}
          </select>
          <p class="hint" id="nf-action-onglet-hint" style="display:none;"></p>
          <div id="nf-action-element-property-wrap">
          <select id="nf-action-element-property" onchange="toggleFlowElementPropertyValue()" style="margin-top:6px;">
            {% for key, label in element_action_properties %}
            <option value="{{ key }}">{{ label }}</option>
            {% endfor %}
          </select>
          <select id="nf-action-element-value-visibility" style="margin-top:6px;">
            {% for key, label in element_visibility_values %}
            <option value="{{ key }}">{{ label }}</option>
            {% endfor %}
          </select>
          <select id="nf-action-element-value-surbrillance" style="display:none; margin-top:6px;">
            {% for key, label in element_surbrillance_values %}
            <option value="{{ key }}">{{ label }}</option>
            {% endfor %}
          </select>
          <select id="nf-action-element-value-desactive" style="display:none; margin-top:6px;">
            {% for key, label in element_desactive_values %}
            <option value="{{ key }}">{{ label }}</option>
            {% endfor %}
          </select>
          <input type="color" id="nf-action-element-value-color" style="display:none; margin-top:6px;" value="#5b8cff">
          <input type="number" id="nf-action-element-value-number" style="display:none; margin-top:6px;" value="50" placeholder="Nouvelle valeur en %">

          <label id="nf-action-element-toggle-row" style="display:flex; align-items:center; gap:6px; margin-top:10px; font-size:12px; color:var(--text-dim);">
            <input type="checkbox" id="nf-action-element-toggle" onchange="toggleFlowElementToggleMode()" style="width:auto; margin:0;">
            Va-et-vient : au 1er clic, passer à cette valeur ; au 2e clic, revenir à la précédente ; etc.
          </label>
          <div id="nf-action-element-value2-wrap" style="display:none; margin-top:6px;">
            <input type="color" id="nf-action-element-value2-color" style="display:none;" value="#ff0000">
            <input type="number" id="nf-action-element-value2-number" style="display:none;" placeholder="Valeur au 2e état en %">
          </div>
          </div>
        </div>

        <div id="nf-action-wait-fields" style="display:none;">
          <label>Délai en secondes avant de continuer
            <input type="number" id="nf-action-wait-seconds" min="0" step="0.5" value="3" placeholder="ex. 3">
          </label>
        </div>

        <div id="nf-action-data-fields" style="display:none;">
          {% if not definitions %}
          <p class="hint">Aucun objet défini dans ce jeu pour l'instant — <a href="{{ url_for('object_new', slug=game.slug) }}">crées-en un</a>.</p>
          {% else %}
          <select id="nf-action-data-definition" onchange="onFlowDefinitionChange('action')">
            {% for d in definitions %}
            <option value="{{ d.id }}">{{ d.name }}</option>
            {% endfor %}
          </select>
          <select id="nf-action-data-row" style="margin-top:6px;"></select>
          <select id="nf-action-data-field" style="margin-top:6px;"></select>
          <select id="nf-action-data-operation" style="margin-top:6px;">
            {% for key, label in data_operations %}
            <option value="{{ key }}">{{ label }}</option>
            {% endfor %}
          </select>
          <input type="text" id="nf-action-data-value" style="margin-top:6px;" placeholder="Valeur / montant">
          {% endif %}
        </div>
      </div>

      <div class="actionsRow"><button type="button" class="smallBtn primary" onclick="submitNodeForm()">+ Ajouter ce nœud</button></div>
    </div>

    <div class="flowCanvasWrap">
      <svg id="flowEdges" class="flowEdgesSvg"></svg>
      <div id="flowCanvas" class="flowCanvas"></div>
    </div>
  </div>
</div>

<!-- Poignée de redimensionnement du panneau timeline, même principe que
     flowResizeHandle ci-dessus. -->
<div class="flowResizeHandle" id="animResizeHandle"></div>

<!-- Panneau bas, rétractable, positionné sous "Logique de la scène" :
     timeline d'animation. Une piste par élément animé, des clips posés sur
     un axe du temps (secondes depuis l'affichage de l'écran) — glisse un
     clip pour changer son départ, tire son bord droit pour changer sa
     durée. Chaque clip est soit une animation de la bibliothèque
     Animate.css, soit une animation personnalisée (images-clés propres à
     ce jeu). -->
<div class="flowPanel" id="animPanel">
  <div class="flowPanelHeader" onclick="toggleAnimPanel()">
    <span class="flowToggleIcon">▸</span> 🎬 Timeline d'animation
  </div>
  <div class="flowPanelBody" id="animPanelBody">
    <div class="flowToolbar">
      <label style="display:flex; align-items:center; gap:6px;">
        Piste
        <select id="anim-new-track-element">
          {% for e2 in elements %}
          <option value="{{ e2.id }}">{{ e2|elabel }}</option>
          {% endfor %}
        </select>
      </label>
      <button type="button" class="smallBtn" onclick="addAnimTrack()">➕ Ajouter un clip</button>
    </div>

    <div id="animClipForm" class="nodeForm" style="display:none;">
      <div class="fieldRow" style="align-items:center; justify-content:space-between;">
        <strong id="animClipFormTitle">Clip d'animation</strong>
        <button type="button" class="smallBtn" onclick="closeAnimClipForm()">✕</button>
      </div>

      <label>Type
        <select id="anim-clip-kind" onchange="toggleAnimClipKind()">
          <option value="animate_css">Animation Animate.css</option>
          <option value="custom">Animation personnalisée — images-clés</option>
        </select>
      </label>

      <div id="anim-clip-animate-css-fields">
        <label>Animation
          <select id="anim-clip-animate-name">
            {% for category, items in animate_css_catalog %}
            <optgroup label="{{ category }}">
              {% for key, label in items %}
              <option value="{{ key }}">{{ label }}</option>
              {% endfor %}
            </optgroup>
            {% endfor %}
          </select>
        </label>
      </div>

      <div id="anim-clip-custom-fields" style="display:none;">
        <div id="anim-clip-keyframes"></div>
        <button type="button" class="smallBtn" onclick="addAnimKeyframeRow()">+ Ajouter une image-clé</button>
      </div>

      <div class="fieldRow">
        <label style="flex:1;">Départ en secondes
          <input type="number" id="anim-clip-start" min="0" step="0.1" value="0">
        </label>
        <label style="flex:1;">Durée en secondes
          <input type="number" id="anim-clip-duration" min="0.1" step="0.1" value="1">
        </label>
      </div>
      <div class="fieldRow">
        <label style="flex:1;">Délai en secondes
          <input type="number" id="anim-clip-delay" min="0" step="0.1" value="0">
        </label>
        <label style="flex:1;">Vitesse
          <select id="anim-clip-easing">
            <option value="ease">Progressive</option>
            <option value="linear">Constante</option>
            <option value="ease-in">Accélère</option>
            <option value="ease-out">Ralentit</option>
            <option value="ease-in-out">Accélère puis ralentit</option>
          </select>
        </label>
      </div>
      <label>Répétitions
        <select id="anim-clip-iteration">
          <option value="1">Une fois</option>
          <option value="2">2 fois</option>
          <option value="3">3 fois</option>
          <option value="infinite">En boucle</option>
        </select>
      </label>

      <div class="actionsRow">
        <button type="button" class="smallBtn primary" onclick="saveAnimClipForm()">Enregistrer</button>
        <button type="button" class="smallBtn" onclick="previewAnimClip()">▶ Aperçu</button>
        <button type="button" class="smallBtn danger" onclick="deleteAnimClipForm()">🗑️ Supprimer</button>
      </div>
    </div>

    <div class="animTimelineWrap">
      <div id="animRuler" class="animRuler"></div>
      <div id="animTracks" class="animTracks"></div>
    </div>
  </div>
</div>
{% endif %}

<script>
function saveGeometry(id, x, y, width, height) {
  return fetch("/game/{{ game.slug }}/elements/" + id + "/geometry", {
    method: 'POST',
    headers: {'Content-Type': 'application/json'},
    body: JSON.stringify({x: x, y: y, width: width, height: height})
  });
}

var SCREEN_EDIT_URL = "{{ url_for('screen_edit', slug=game.slug, screen_id=screen.id) }}";
var CURRENT_SELECTED_ID = {{ selected_id or 'null' }};

// ---------- Navigation dans l'éditeur sans AUCUN rechargement de page ----------
//
// Se déplacer dans le canevas (glisser, redimensionner, cliquer un autre
// élément) et modifier les réglages d'un élément ne doivent jamais recharger
// la page : on va chercher en arrière-plan (fetch) uniquement le fragment
// HTML dont on a besoin (le bloc #builder3 en entier pour changer de
// sélection, ou juste #canvas pour refléter un changement visuel après une
// sauvegarde automatique) et on le remplace dans le DOM courant. L'URL
// (?selected=...) reste mise à jour via l'historique (pushState), pour que
// le bouton "précédent" du navigateur continue à fonctionner normalement.

function refreshBuilderPanel(selectedId) {
  var url = SCREEN_EDIT_URL + "?selected=" + selectedId;
  return fetch(url, { headers: { "X-Requested-With": "pjax" } })
    .then(function (r) { return r.text().then(function (html) { return { html: html, url: r.url || url }; }); })
    .then(function (result) {
      var doc = new DOMParser().parseFromString(result.html, "text/html");
      var newBuilder = doc.getElementById("builder3");
      var curBuilder = document.getElementById("builder3");
      if (newBuilder && curBuilder) {
        curBuilder.innerHTML = newBuilder.innerHTML;
      }
      CURRENT_SELECTED_ID = selectedId;
      history.pushState({ pjax: true }, "", result.url);
      initBuilderPanel();
    })
    .catch(function () {
      // Échec réseau : on retombe sur une vraie navigation plutôt que de
      // laisser l'éditeur dans un état incohérent.
      window.location.href = url;
    });
}

function refreshCanvasOnly() {
  if (!CURRENT_SELECTED_ID) return Promise.resolve();
  var url = SCREEN_EDIT_URL + "?selected=" + CURRENT_SELECTED_ID;
  return fetch(url, { headers: { "X-Requested-With": "pjax" } })
    .then(function (r) { return r.text(); })
    .then(function (html) {
      var doc = new DOMParser().parseFromString(html, "text/html");
      var newCanvas = doc.getElementById("canvas");
      var curCanvas = document.getElementById("canvas");
      if (newCanvas && curCanvas) {
        curCanvas.innerHTML = newCanvas.innerHTML;
      }
      // Aperçu du contenu dans l'arborescence de gauche (ex: texte tronqué) —
      // sans toucher au panneau de droite, pour ne jamais faire perdre le
      // focus/curseur pendant qu'on modifie un réglage.
      var newList = doc.querySelector('.builderPanel .list');
      var curList = document.querySelector('.builderPanel .list');
      if (newList && curList) curList.innerHTML = newList.innerHTML;
    });
}

function goToSelected(id) {
  return refreshBuilderPanel(id);
}

// ---------- Glisser-déposer / redimensionner sur le canevas ----------
//
// Un mousedown qui bouge de plus de quelques pixels déplace l'élément
// (position sauvegardée en arrière-plan à la fin, sans recharger la page —
// comme l'élément déplacé reste celui déjà sélectionné, on se contente de
// mettre à jour les champs X/Y/Largeur/Hauteur en local, rien d'autre à
// rafraîchir) ; un mousedown qui ne bouge pas est traité comme un simple
// clic de sélection (qui, lui, doit rafraîchir le panneau de droite pour
// afficher les réglages du nouvel élément choisi).
function onElementMouseDown(e, id) {
  if (e.target.classList.contains('resizeHandle')) return;
  e.preventDefault();
  var el = document.getElementById('el-' + id);
  var canvas = document.getElementById('canvas');
  var rect = canvas.getBoundingClientRect();
  var startX = e.clientX, startY = e.clientY;
  var startLeft = parseFloat(el.style.left), startTop = parseFloat(el.style.top);
  var width = parseFloat(el.style.width), height = parseFloat(el.style.height);
  var moved = false;
  // Un clic (sans glisser) sélectionne l'élément précis qu'on a touché —
  // même s'il est physiquement imbriqué dans ce conteneur — pour éviter de
  // devoir repasser par l'arborescence à chaque fois. Le glisser-déposer,
  // lui, reste toujours celui de la boîte de plus haut niveau (id).
  var clickedTarget = e.target.closest('[data-element-id]');
  var clickedId = clickedTarget ? clickedTarget.dataset.elementId : id;

  function onMove(ev) {
    var dx = ev.clientX - startX, dy = ev.clientY - startY;
    if (Math.abs(dx) > 3 || Math.abs(dy) > 3) moved = true;
    var newLeft = Math.max(0, Math.min(100 - width, startLeft + (dx / rect.width) * 100));
    var newTop = Math.max(0, Math.min(100 - height, startTop + (dy / rect.height) * 100));
    el.style.left = newLeft + '%';
    el.style.top = newTop + '%';
  }
  function onUp() {
    document.removeEventListener('mousemove', onMove);
    document.removeEventListener('mouseup', onUp);
    if (moved) {
      var newLeft = parseFloat(el.style.left), newTop = parseFloat(el.style.top);
      updatePosFields(newLeft, newTop, width, height);
      saveGeometry(id, newLeft, newTop, width, height);
    } else if (String(clickedId) !== String(CURRENT_SELECTED_ID)) {
      goToSelected(clickedId);
    }
  }
  document.addEventListener('mousemove', onMove);
  document.addEventListener('mouseup', onUp);
}

function onResizeMouseDown(e, id) {
  e.stopPropagation();
  e.preventDefault();
  var el = document.getElementById('el-' + id);
  var canvas = document.getElementById('canvas');
  var rect = canvas.getBoundingClientRect();
  var startX = e.clientX, startY = e.clientY;
  var startWidth = parseFloat(el.style.width), startHeight = parseFloat(el.style.height);
  var left = parseFloat(el.style.left), top = parseFloat(el.style.top);

  function onMove(ev) {
    var dx = ev.clientX - startX, dy = ev.clientY - startY;
    var newWidth = Math.max(5, Math.min(100 - left, startWidth + (dx / rect.width) * 100));
    var newHeight = Math.max(5, Math.min(100 - top, startHeight + (dy / rect.height) * 100));
    el.style.width = newWidth + '%';
    el.style.height = newHeight + '%';
  }
  function onUp() {
    document.removeEventListener('mousemove', onMove);
    document.removeEventListener('mouseup', onUp);
    var newWidth = parseFloat(el.style.width), newHeight = parseFloat(el.style.height);
    updatePosFields(left, top, newWidth, newHeight);
    saveGeometry(id, left, top, newWidth, newHeight);
  }
  document.addEventListener('mousemove', onMove);
  document.addEventListener('mouseup', onUp);
}

function updatePosFields(x, y, w, h) {
  var xEl = document.getElementById('pos-x'), yEl = document.getElementById('pos-y');
  var wEl = document.getElementById('pos-w'), hEl = document.getElementById('pos-h');
  if (xEl) xEl.value = Math.round(x * 10) / 10;
  if (yEl) yEl.value = Math.round(y * 10) / 10;
  if (wEl) wEl.value = Math.round(w * 10) / 10;
  if (hEl) hEl.value = Math.round(h * 10) / 10;
}

// ---------- Panneau de propriétés : tout est enregistré automatiquement ----------
//
// Il n'y a plus de bouton "Enregistrer" : chaque réglage se sauvegarde tout
// seul dès qu'on le change (immédiatement pour une case à cocher/couleur/
// liste déroulante, après une courte pause pour un champ texte ou un
// slider qu'on est en train de glisser, pour éviter d'envoyer une requête à
// chaque caractère tapé ou à chaque pixel de glissement).
var autosaveTimer = null;
var autosaveIndicator = null;

function flashAutosave(state) {
  if (!autosaveIndicator) return;
  autosaveIndicator.classList.remove('saving', 'saved');
  if (state === 'saving') {
    autosaveIndicator.textContent = 'Enregistrement...';
    autosaveIndicator.classList.add('saving');
  } else {
    autosaveIndicator.textContent = 'Enregistré automatiquement ✓';
    autosaveIndicator.classList.add('saved');
  }
}

function submitPropsForm() {
  var form = document.getElementById('propsForm');
  if (!form) return Promise.resolve();
  flashAutosave('saving');
  var data = new FormData(form);
  return fetch(form.getAttribute('action'), {
    method: 'POST', body: data, headers: { "X-Requested-With": "pjax" }
  }).then(function () {
    flashAutosave('saved');
    return refreshCanvasOnly();
  });
}

function debouncedSubmitPropsForm() {
  clearTimeout(autosaveTimer);
  autosaveTimer = setTimeout(submitPropsForm, 500);
}

function bindPropsAutosave() {
  var form = document.getElementById('propsForm');
  autosaveIndicator = document.getElementById('autosaveStatus');
  if (!form) return;
  form.querySelectorAll('input, textarea, select').forEach(function (field) {
    if (field.classList.contains('uploadInput')) return; // géré séparément (upload de fichier)
    var debounced = field.type === 'text' || field.type === 'range' || field.tagName === 'TEXTAREA';
    field.addEventListener(debounced ? 'input' : 'change', function () {
      // Le bascule visuelle de l'alignement (case active) est déjà gérée
      // par l'attribut onchange="syncAlign(this)" posé sur chaque radio.
      if (debounced) debouncedSubmitPropsForm(); else submitPropsForm();
    });
  });
}

// ---------- (Ré)initialisation du panneau central après chaque changement
// de sélection — nécessaire car #builder3 est entièrement remplacé, donc
// tout ce qui y était lié par addEventListener doit être rebranché (les
// attributs onclick/onmousedown inline, eux, fonctionnent automatiquement
// dès que le HTML est injecté, sans rien à refaire). ----------
function initBuilderPanel() {
  (function () {
    var xEl = document.getElementById('pos-x'), yEl = document.getElementById('pos-y');
    var wEl = document.getElementById('pos-w'), hEl = document.getElementById('pos-h');
    // pos-w/pos-h n'existent pas pour un élément posé dans un conteneur (sa
    // taille se règle via les champs "Largeur/Hauteur (%)"/"fixe (px)" du
    // formulaire général à la place, voir size_ctrls plus haut) — X/Y non
    // plus, mais ils restent dans le DOM (juste désactivés) pour cet élément.
    if (!xEl || !wEl) return;
    function apply() {
      var canvasEl = document.getElementById('el-' + CURRENT_SELECTED_ID);
      var x = parseFloat(xEl.value) || 0, y = parseFloat(yEl.value) || 0;
      var w = parseFloat(wEl.value) || 1, h = parseFloat(hEl.value) || 1;
      if (canvasEl) {
        canvasEl.style.left = x + '%'; canvasEl.style.top = y + '%';
        canvasEl.style.width = w + '%'; canvasEl.style.height = h + '%';
      }
      saveGeometry(CURRENT_SELECTED_ID, x, y, w, h);
    }
    [xEl, yEl, wEl, hEl].forEach(function (el) { el.addEventListener('change', apply); });
  })();

  bindAspectButtons();

  document.querySelectorAll('.uploadInput').forEach(function (input) {
    input.addEventListener('change', function () {
      if (!input.files.length) return;
      var status = input.parentElement.querySelector('.uploadStatus');
      var targetField = document.getElementById(input.dataset.target);
      status.textContent = 'Envoi en cours...';
      var data = new FormData();
      data.append('file', input.files[0]);
      fetch("/game/{{ game.slug }}/upload", { method: 'POST', body: data })
        .then(function (r) { return r.json(); })
        .then(function (json) {
          if (json.url) {
            targetField.value = json.url;
            status.textContent = 'Fichier envoyé ✓ Enregistrement...';
            // Enregistre tout de suite, comme n'importe quel autre réglage —
            // un fichier envoyé ne doit jamais rester "en attente".
            submitPropsForm().then(function () { status.textContent = 'Fichier envoyé ✓ Enregistré.'; });
          }
          else { status.textContent = "Échec de l'envoi."; }
        })
        .catch(function () { status.textContent = "Échec de l'envoi."; });
    });
  });

  bindPropsAutosave();
}

// Le retour/avance du navigateur (bouton "précédent") est déjà pris en
// charge par pjax.js (navigation globale sans rechargement, voir
// static/pjax.js) : il refait un rendu complet de <main> et rejoue ce
// script (voir runScriptsIn dans pjax.js), ce qui rappelle initBuilderPanel()
// ci-dessous — donc le canevas et le panneau de propriétés se retrouvent à
// jour automatiquement, sans qu'on ait besoin d'un second écouteur ici.
initBuilderPanel();

var DEFINITIONS_DATA = {{ definitions_json|safe }};
var CONDITION_OPERATORS_HTML = document.getElementById('nf-cond-operator') ? document.getElementById('nf-cond-operator').innerHTML : '';

function toggleActionFields(sel) {
  var form = sel.closest('.actionAddForm');
  var screenSel = form.querySelector('.targetScreenSelect');
  var elementFields = form.querySelector('.targetElementFields');
  var dataFields = form.querySelector('.targetDataFields');
  screenSel.style.display = sel.value === 'aller_a' ? 'block' : 'none';
  elementFields.style.display = sel.value === 'modifier_element' ? 'block' : 'none';
  dataFields.style.display = sel.value === 'modifier_donnee' ? 'block' : 'none';
  if (sel.value === 'modifier_element') {
    var propSel = elementFields.querySelector('.elementPropertySelect');
    toggleElementPropertyValue(propSel);
  }
  if (sel.value === 'modifier_donnee') {
    var defSel = dataFields.querySelector('.targetDefinitionSelect');
    if (defSel) onDataDefinitionChange(defSel);
  }
}
document.querySelectorAll('.actionTypeSelect').forEach(toggleActionFields);

function toggleElementPropertyValue(sel) {
  var wrap = sel.closest('.targetElementFields');
  var visSel = wrap.querySelector('.elementValueVisibility');
  var colorInp = wrap.querySelector('.elementValueColor');
  var numInp = wrap.querySelector('.elementValueNumber');
  [visSel, colorInp, numInp].forEach(function(el){ el.style.display = 'none'; el.removeAttribute('name'); });
  if (sel.value === 'visibilite') {
    visSel.style.display = 'block'; visSel.setAttribute('name', 'element_value');
  } else if (sel.value === 'bg_color' || sel.value === 'border_color') {
    colorInp.style.display = 'block'; colorInp.setAttribute('name', 'element_value');
  } else {
    numInp.style.display = 'block'; numInp.setAttribute('name', 'element_value');
  }
}
document.querySelectorAll('.elementPropertySelect').forEach(toggleElementPropertyValue);

function onDataDefinitionChange(sel) {
  var wrap = sel.closest('.targetDataFields');
  var info = DEFINITIONS_DATA[sel.value] || {rows: [], fields: []};
  var rowSel = wrap.querySelector('.targetRowSelect');
  var fieldSel = wrap.querySelector('.targetFieldSelect');
  if (!rowSel || !fieldSel) return;
  rowSel.innerHTML = info.rows.length
    ? info.rows.map(function(r){ return '<option value="' + r.id + '">' + r.label + '</option>'; }).join('')
    : '<option value="">Aucune donnée dans cet objet</option>';
  fieldSel.innerHTML = info.fields.length
    ? info.fields.map(function(f){ return '<option value="' + f.name + '">' + f.name + ' (' + f.type + ')</option>'; }).join('')
    : '<option value="">Aucun champ simple</option>';
}
document.querySelectorAll('.targetDefinitionSelect').forEach(onDataDefinitionChange);

function syncAlign(radio) {
  radio.closest('.alignGroup').querySelectorAll('.alignOption').forEach(function(o){ o.classList.remove('active'); });
  radio.closest('.alignOption').classList.add('active');
}

// Choix du format d'aperçu (Portrait/Paysage/Carré) : mémorisé côté serveur
// (voir screen_set_aspect.py) pour ne pas repartir sur Portrait à chaque
// ajout/suppression d'élément ou changement de sélection — ces actions
// redemandent ce panneau au serveur, qui doit donc connaître le choix déjà
// fait. Appelé depuis initBuilderPanel() (voir plus haut), une seule fois
// par (re)rendu de ce panneau.
function bindAspectButtons() {
  document.querySelectorAll('.aspectBtn').forEach(function (btn) {
    btn.addEventListener('click', function () {
      document.querySelectorAll('.aspectBtn').forEach(function (b) { b.classList.remove('active'); });
      btn.classList.add('active');
      document.getElementById('canvas').style.aspectRatio = btn.dataset.aspect;
      fetch("/game/{{ game.slug }}/screens/{{ screen.id }}/aspect", {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ aspect: btn.dataset.aspect }),
      });
    });
  });
}

document.querySelectorAll('.uploadInput').forEach(function(input){
  input.addEventListener('change', function(){
    if (!input.files.length) return;
    var status = input.parentElement.querySelector('.uploadStatus');
    var targetField = document.getElementById(input.dataset.target);
    status.textContent = 'Envoi en cours...';
    var data = new FormData();
    data.append('file', input.files[0]);
    fetch("/game/{{ game.slug }}/upload", {method: 'POST', body: data})
      .then(function(r){ return r.json(); })
      .then(function(json){
        if (json.url) {
          targetField.value = json.url;
          status.textContent = 'Fichier envoyé ✓ Enregistrement...';
          // Enregistre tout de suite (comme un clic sur "Enregistrer") pour
          // qu'un fichier envoyé ne reste jamais "en attente" si on oublie
          // de cliquer sur le bouton ensuite — l'image doit apparaître dès
          // l'envoi, sans étape supplémentaire à retenir.
          var form = document.getElementById('propsForm');
          if (form) { form.requestSubmit ? form.requestSubmit() : form.submit(); }
        }
        else { status.textContent = "Échec de l'envoi."; }
      })
      .catch(function(){ status.textContent = "Échec de l'envoi."; });
  });
});

// ---------- Logique de la scène : éditeur de flow à nœuds ----------

var FLOW_SCREEN_ID = {{ screen.id }};
var FLOW = {
  nodes: {{ flow_nodes_json|safe }},
  edges: {{ flow_edges_json|safe }},
};
var ELEMENTS_LABELS = {{ elements_labels_json|safe }};
var SCREENS_MAP = {{ screens_map_json|safe }};
var ACTION_TYPE_LABELS_MAP = {{ action_type_labels_json|safe }};
var ELEMENT_PROPERTY_LABELS_MAP = {{ element_action_property_labels_json|safe }};
var ELEMENT_VISIBILITY_LABELS_MAP = {{ element_visibility_labels_json|safe }};
var ELEMENT_SURBRILLANCE_LABELS_MAP = {{ element_surbrillance_labels_json|safe }};
var ELEMENT_DESACTIVE_LABELS_MAP = {{ element_desactive_labels_json|safe }};
var DATA_OPERATION_LABELS_MAP = {{ data_operation_labels_json|safe }};
var CONDITION_OPERATOR_LABELS_MAP = {{ condition_operator_labels_json|safe }};
var TRIGGER_LABELS_MAP = {{ trigger_labels_json|safe }};

var flowPendingPort = null; // {nodeId, port} en attente de connexion

function flowUrl(path) { return "/game/{{ game.slug }}" + path; }

function nodeLabel(node) {
  if (node.node_type === 'trigger') {
    if (node.trigger_event === 'affichage') return '🖥️ ' + TRIGGER_LABELS_MAP['affichage'];
    return '🖱️ ' + (TRIGGER_LABELS_MAP[node.trigger_event] || 'Au clic') + ' sur ' +
      (ELEMENTS_LABELS[node.trigger_element_id] || '?');
  }
  if (node.node_type === 'condition') {
    var mainClause = '❓ SI ' + (node.cond_field || '?') + ' ' + (CONDITION_OPERATOR_LABELS_MAP[node.cond_operator] || node.cond_operator) + ' ' + (node.cond_value || '');
    if (node.cond_clauses) {
      // 2.4 — plusieurs clauses combinées : on affiche chaque champ testé,
      // relié par le connecteur ET/OU choisi, plutôt qu'une seule clause.
      try {
        var clauses = JSON.parse(node.cond_clauses);
        var combLabel = node.cond_combinator === 'ou' ? ' OU ' : ' ET ';
        return '❓ SI ' + clauses.map(function(c) {
          return (c.field || '?') + ' ' + (CONDITION_OPERATOR_LABELS_MAP[c.operator] || c.operator) + ' ' + (c.value || '');
        }).join(combLabel);
      } catch (e) { /* JSON invalide : on retombe sur la clause historique */ }
    }
    return mainClause;
  }
  // action
  var base = '⚡ ' + (ACTION_TYPE_LABELS_MAP[node.action_type] || node.action_type);
  if (node.action_type === 'aller_a') {
    base += ' → ' + (SCREENS_MAP[node.target_screen_id] || '?');
  } else if (node.action_type === 'ouvrir_ligne') {
    base += ' → ' + (SCREENS_MAP[node.target_screen_id] || '?') + ' (ligne cliquée)';
  } else if (node.action_type === 'activer_onglet') {
    base += ' → ' + (ELEMENTS_LABELS[node.target_element_id] || '?') + ' (masque ses frères)';
  } else if (node.action_type === 'modifier_element') {
    base += ' → ' + (ELEMENTS_LABELS[node.target_element_id] || '?') + ' : ' + (ELEMENT_PROPERTY_LABELS_MAP[node.element_property] || node.element_property);
    if (node.element_property === 'visibilite') {
      base += ' = ' + (ELEMENT_VISIBILITY_LABELS_MAP[node.element_value] || node.element_value);
    } else if (node.element_property === 'surbrillance') {
      base += ' = ' + (ELEMENT_SURBRILLANCE_LABELS_MAP[node.element_value] || node.element_value);
    } else if (node.element_property === 'desactive') {
      base += ' = ' + (ELEMENT_DESACTIVE_LABELS_MAP[node.element_value] || node.element_value);
    } else if (node.element_value && node.element_value.indexOf('||') !== -1) {
      var vparts = node.element_value.split('||');
      base += ' = ' + vparts[0] + ' ↔ ' + vparts[1] + ' (va-et-vient)';
    } else {
      base += ' = ' + node.element_value;
    }
  } else if (node.action_type === 'modifier_donnee') {
    base += ' → ' + (node.target_field || '?') + ' : ' + (DATA_OPERATION_LABELS_MAP[node.data_operation] || node.data_operation);
    if (node.data_value) base += ' ' + node.data_value;
  } else if (node.action_type === 'attendre') {
    base += ' (' + (node.data_value || '0') + ' s)';
  }
  return base;
}

function renderFlow() {
  var canvas = document.getElementById('flowCanvas');
  var svg = document.getElementById('flowEdges');
  canvas.innerHTML = '';
  svg.innerHTML = '';

  FLOW.nodes.forEach(function(node) {
    var div = document.createElement('div');
    div.className = 'flowNode flowNode-' + node.node_type;
    div.style.left = node.x + 'px';
    div.style.top = node.y + 'px';
    div.dataset.nodeId = node.id;

    var del = document.createElement('button');
    del.className = 'flowNodeDelete';
    del.type = 'button';
    del.textContent = '✕';
    del.onclick = function(ev) { ev.stopPropagation(); deleteFlowNode(node.id); };
    div.appendChild(del);

    var body = document.createElement('div');
    body.className = 'flowNodeBody';
    body.textContent = nodeLabel(node);
    div.appendChild(body);

    if (node.node_type !== 'trigger') {
      var inPort = document.createElement('div');
      inPort.className = 'flowPort flowPortIn';
      inPort.onclick = function(ev) { ev.stopPropagation(); onPortClick(node.id, 'in', null); };
      div.appendChild(inPort);
    }
    if (node.node_type === 'condition') {
      var outTrue = document.createElement('div');
      outTrue.className = 'flowPort flowPortOut flowPortTrue';
      outTrue.title = 'Vrai';
      outTrue.onclick = function(ev) { ev.stopPropagation(); onPortClick(node.id, 'out', 'vrai'); };
      div.appendChild(outTrue);
      var outFalse = document.createElement('div');
      outFalse.className = 'flowPort flowPortOut flowPortFalse';
      outFalse.title = 'Faux';
      outFalse.onclick = function(ev) { ev.stopPropagation(); onPortClick(node.id, 'out', 'faux'); };
      div.appendChild(outFalse);
    } else {
      var outPort = document.createElement('div');
      outPort.className = 'flowPort flowPortOut';
      outPort.onclick = function(ev) { ev.stopPropagation(); onPortClick(node.id, 'out', 'out'); };
      div.appendChild(outPort);
    }

    div.addEventListener('mousedown', function(e) { onFlowNodeMouseDown(e, node.id); });
    canvas.appendChild(div);
  });

  // Redessine les fils après que les nœuds soient dans le DOM (pour lire leur position réelle).
  requestAnimationFrame(drawFlowEdges);
}

function portPosition(nodeId, side, sub) {
  var div = document.querySelector('.flowNode[data-node-id="' + nodeId + '"]');
  if (!div) return null;
  var wrap = document.querySelector('.flowCanvasWrap');
  var wrapRect = wrap.getBoundingClientRect();
  var selector = side === 'in' ? '.flowPortIn' : (sub === 'vrai' ? '.flowPortTrue' : (sub === 'faux' ? '.flowPortFalse' : '.flowPortOut'));
  var port = div.querySelector(selector);
  if (!port) return null;
  var r = port.getBoundingClientRect();
  return { x: r.left + r.width / 2 - wrapRect.left + wrap.scrollLeft, y: r.top + r.height / 2 - wrapRect.top + wrap.scrollTop };
}

function drawFlowEdges() {
  var svg = document.getElementById('flowEdges');
  svg.innerHTML = '';
  FLOW.edges.forEach(function(edge) {
    var from = portPosition(edge.from_node_id, 'out', edge.from_port);
    var to = portPosition(edge.to_node_id, 'in', null);
    if (!from || !to) return;
    var line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
    line.setAttribute('x1', from.x); line.setAttribute('y1', from.y);
    line.setAttribute('x2', to.x); line.setAttribute('y2', to.y);
    line.setAttribute('class', 'flowEdgeLine' + (edge.from_port === 'faux' ? ' flowEdgeFalse' : (edge.from_port === 'vrai' ? ' flowEdgeTrue' : '')));
    line.style.pointerEvents = 'stroke';
    line.addEventListener('click', function() { deleteFlowEdge(edge.id); });
    svg.appendChild(line);
  });
}

function onPortClick(nodeId, side, port) {
  if (side === 'out') {
    flowPendingPort = { nodeId: nodeId, port: port };
    return;
  }
  // side === 'in'
  if (!flowPendingPort) return;
  if (flowPendingPort.nodeId === nodeId) { flowPendingPort = null; return; }
  fetch(flowUrl('/screens/' + FLOW_SCREEN_ID + '/flow/edges/add'), {
    method: 'POST', headers: {'Content-Type': 'application/json'},
    body: JSON.stringify({ from_node_id: flowPendingPort.nodeId, from_port: flowPendingPort.port, to_node_id: nodeId })
  }).then(function(r){ return r.json(); }).then(function(edge){
    FLOW.edges.push({ id: edge.id, screen_id: FLOW_SCREEN_ID, from_node_id: flowPendingPort.nodeId, from_port: flowPendingPort.port, to_node_id: nodeId });
    flowPendingPort = null;
    drawFlowEdges();
  });
}

function deleteFlowEdge(edgeId) {
  fetch(flowUrl('/flow/edges/' + edgeId + '/delete'), { method: 'POST' }).then(function(){
    FLOW.edges = FLOW.edges.filter(function(e){ return e.id !== edgeId; });
    drawFlowEdges();
  });
}

function deleteFlowNode(nodeId) {
  fetch(flowUrl('/flow/nodes/' + nodeId + '/delete'), { method: 'POST' }).then(function(){
    FLOW.nodes = FLOW.nodes.filter(function(n){ return n.id !== nodeId; });
    FLOW.edges = FLOW.edges.filter(function(e){ return e.from_node_id !== nodeId && e.to_node_id !== nodeId; });
    renderFlow();
  });
}

function onFlowNodeMouseDown(e, nodeId) {
  if (e.target.classList.contains('flowPort') || e.target.classList.contains('flowNodeDelete')) return;
  e.preventDefault();
  var node = FLOW.nodes.find(function(n){ return n.id === nodeId; });
  var div = document.querySelector('.flowNode[data-node-id="' + nodeId + '"]');
  var startX = e.clientX, startY = e.clientY;
  var startLeft = node.x, startTop = node.y;
  function onMove(ev) {
    var dx = ev.clientX - startX, dy = ev.clientY - startY;
    node.x = Math.max(0, startLeft + dx);
    node.y = Math.max(0, startTop + dy);
    div.style.left = node.x + 'px';
    div.style.top = node.y + 'px';
    drawFlowEdges();
  }
  function onUp() {
    document.removeEventListener('mousemove', onMove);
    document.removeEventListener('mouseup', onUp);
    fetch(flowUrl('/flow/nodes/' + nodeId + '/move'), {
      method: 'POST', headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({ x: node.x, y: node.y })
    });
  }
  document.addEventListener('mousemove', onMove);
  document.addEventListener('mouseup', onUp);
}

// ---------- Formulaire d'ajout de nœud ----------

var currentNodeFormType = null;

function openNodeForm(type) {
  currentNodeFormType = type;
  document.getElementById('nodeForm').style.display = 'block';
  document.getElementById('nodeFormTitle').textContent =
    type === 'trigger' ? 'Nouveau déclencheur' : (type === 'condition' ? 'Nouvelle condition' : 'Nouvelle action');
  document.getElementById('nodeFormTrigger').style.display = type === 'trigger' ? 'block' : 'none';
  document.getElementById('nodeFormCondition').style.display = type === 'condition' ? 'block' : 'none';
  document.getElementById('nodeFormAction').style.display = type === 'action' ? 'block' : 'none';
  if (type === 'trigger') toggleFlowTriggerFields();
  if (type === 'condition') {
    onFlowDefinitionChange('cond');
    flowConditionExtraClauses = [];
    renderFlowConditionClauses();
  }
  if (type === 'action') {
    document.getElementById('nf-action-element-toggle').checked = false;
    toggleFlowActionFields();
  }
}

function toggleFlowTriggerFields() {
  var isAffichage = document.getElementById('nf-trigger-event').value === 'affichage';
  document.getElementById('nf-trigger-element-row').style.display = isAffichage ? 'none' : 'block';
  document.getElementById('nf-trigger-repeater-hint').style.display = isAffichage ? 'none' : 'block';
  document.getElementById('nf-trigger-affichage-hint').style.display = isAffichage ? 'block' : 'none';
}

function closeNodeForm() {
  document.getElementById('nodeForm').style.display = 'none';
  currentNodeFormType = null;
}

function onFlowDefinitionChange(prefix) {
  var defSel = document.getElementById(prefix === 'cond' ? 'nf-cond-definition' : 'nf-action-data-definition');
  if (!defSel) return;
  var info = DEFINITIONS_DATA[defSel.value] || { rows: [], fields: [] };
  var rowSel = document.getElementById(prefix === 'cond' ? 'nf-cond-row' : 'nf-action-data-row');
  var fieldSel = document.getElementById(prefix === 'cond' ? 'nf-cond-field' : 'nf-action-data-field');
  rowSel.innerHTML = info.rows.length
    ? info.rows.map(function(r){ return '<option value="' + r.id + '">' + r.label + '</option>'; }).join('')
    : '<option value="">Aucune donnée dans cet objet</option>';
  fieldSel.innerHTML = info.fields.length
    ? info.fields.map(function(f){ return '<option value="' + f.name + '" data-type="' + f.type + '">' + f.name + ' (' + f.type + ')</option>'; }).join('')
    : '<option value="">Aucun champ simple</option>';
}

function onFlowFieldChange() {
  // Pas d'action nécessaire ici pour l'instant : le type du champ est relu
  // directement sur l'option sélectionnée au moment de la création du nœud.
}

// ---------- 2.4 — clauses supplémentaires (ET/OU) d'un nœud Condition ----------
// Chaque clause supplémentaire réutilise EXACTEMENT le même modèle que la
// clause principale (nf-cond-definition/row/field/operator/value) mais dans
// une ligne indépendante, numérotée par index dans flowConditionExtraClauses.
var flowConditionExtraClauses = [];

function addFlowConditionClause() {
  var firstDefSel = document.getElementById('nf-cond-definition');
  var defaultDefId = firstDefSel && firstDefSel.value ? firstDefSel.value : '';
  flowConditionExtraClauses.push({ definition_id: defaultDefId, row_id: '', field: '', field_type: '', operator: 'egal', value: '' });
  renderFlowConditionClauses();
}

function removeFlowConditionClause(idx) {
  flowConditionExtraClauses.splice(idx, 1);
  renderFlowConditionClauses();
}

function renderFlowConditionClauses() {
  var wrap = document.getElementById('nf-cond-extra-clauses');
  var combinatorRow = document.getElementById('nf-cond-combinator-row');
  if (!wrap || !combinatorRow) return;
  combinatorRow.style.display = flowConditionExtraClauses.length ? 'block' : 'none';
  var defOptionsHtml = document.getElementById('nf-cond-definition') ? document.getElementById('nf-cond-definition').innerHTML : '';
  wrap.innerHTML = flowConditionExtraClauses.map(function(clause, idx) {
    return '' +
      '<div class="flowConditionClauseRow" style="border-top:1px dashed #ccc; margin-top:8px; padding-top:8px;">' +
        '<label>Objet<select id="nf-cond-extra-definition-' + idx + '" onchange="onFlowClauseDefinitionChange(' + idx + ')">' + defOptionsHtml + '</select></label>' +
        '<label>Ligne concernée<select id="nf-cond-extra-row-' + idx + '" onchange="flowConditionExtraClauses[' + idx + '].row_id = this.value"></select></label>' +
        '<label>Champ<select id="nf-cond-extra-field-' + idx + '" onchange="onFlowClauseFieldChange(' + idx + ')"></select></label>' +
        '<label>Condition<select id="nf-cond-extra-operator-' + idx + '" onchange="flowConditionExtraClauses[' + idx + '].operator = this.value">' +
          CONDITION_OPERATORS_HTML +
        '</select></label>' +
        '<label>Valeur de comparaison<input type="text" id="nf-cond-extra-value-' + idx + '" placeholder="ex. 1, vrai, 10..." value="' + (clause.value || '').replace(/"/g, '&quot;') + '" onchange="flowConditionExtraClauses[' + idx + '].value = this.value"></label>' +
        '<button type="button" class="smallBtn" onclick="removeFlowConditionClause(' + idx + ')">Retirer cette condition</button>' +
      '</div>';
  }).join('');
  flowConditionExtraClauses.forEach(function(clause, idx) {
    var defSel = document.getElementById('nf-cond-extra-definition-' + idx);
    if (defSel && clause.definition_id) defSel.value = clause.definition_id;
    onFlowClauseDefinitionChange(idx);
    var opSel = document.getElementById('nf-cond-extra-operator-' + idx);
    if (opSel) opSel.value = clause.operator || 'egal';
  });
}

function onFlowClauseDefinitionChange(idx) {
  var defSel = document.getElementById('nf-cond-extra-definition-' + idx);
  var rowSel = document.getElementById('nf-cond-extra-row-' + idx);
  var fieldSel = document.getElementById('nf-cond-extra-field-' + idx);
  if (!defSel || !rowSel || !fieldSel) return;
  flowConditionExtraClauses[idx].definition_id = defSel.value;
  var info = DEFINITIONS_DATA[defSel.value] || { rows: [], fields: [] };
  rowSel.innerHTML = info.rows.length
    ? info.rows.map(function(r){ return '<option value="' + r.id + '">' + r.label + '</option>'; }).join('')
    : '<option value="">Aucune donnée dans cet objet</option>';
  fieldSel.innerHTML = info.fields.length
    ? info.fields.map(function(f){ return '<option value="' + f.name + '" data-type="' + f.type + '">' + f.name + ' (' + f.type + ')</option>'; }).join('')
    : '<option value="">Aucun champ simple</option>';
  flowConditionExtraClauses[idx].row_id = rowSel.value;
  onFlowClauseFieldChange(idx);
}

function onFlowClauseFieldChange(idx) {
  var fieldSel = document.getElementById('nf-cond-extra-field-' + idx);
  if (!fieldSel) return;
  var opt = fieldSel.options[fieldSel.selectedIndex];
  flowConditionExtraClauses[idx].field = fieldSel.value;
  flowConditionExtraClauses[idx].field_type = opt ? opt.dataset.type : '';
}

function toggleFlowActionFields() {
  var typeSel = document.getElementById('nf-action-type');
  var screenSel = document.getElementById('nf-action-target-screen');
  var elementFields = document.getElementById('nf-action-element-fields');
  var dataFields = document.getElementById('nf-action-data-fields');
  var waitFields = document.getElementById('nf-action-wait-fields');
  var isOnglet = typeSel.value === 'activer_onglet';
  screenSel.style.display = (typeSel.value === 'aller_a' || typeSel.value === 'ouvrir_ligne') ? 'block' : 'none';
  elementFields.style.display = (typeSel.value === 'modifier_element' || isOnglet) ? 'block' : 'none';
  dataFields.style.display = typeSel.value === 'modifier_donnee' ? 'block' : 'none';
  waitFields.style.display = typeSel.value === 'attendre' ? 'block' : 'none';
  document.getElementById('nf-action-onglet-hint').style.display = isOnglet ? 'block' : 'none';
  document.getElementById('nf-action-element-property-wrap').style.display = isOnglet ? 'none' : 'block';
  if (typeSel.value === 'modifier_element') toggleFlowElementPropertyValue();
  if (typeSel.value === 'modifier_donnee') onFlowDefinitionChange('action');
}

function toggleFlowElementPropertyValue() {
  var propSel = document.getElementById('nf-action-element-property');
  var visSel = document.getElementById('nf-action-element-value-visibility');
  var surbrillanceSel = document.getElementById('nf-action-element-value-surbrillance');
  var desactiveSel = document.getElementById('nf-action-element-value-desactive');
  var colorInp = document.getElementById('nf-action-element-value-color');
  var numInp = document.getElementById('nf-action-element-value-number');
  var toggleRow = document.getElementById('nf-action-element-toggle-row');
  [visSel, surbrillanceSel, desactiveSel, colorInp, numInp].forEach(function(el){ el.style.display = 'none'; });
  if (propSel.value === 'visibilite') {
    visSel.style.display = 'block';
    toggleRow.style.display = 'none';
    document.getElementById('nf-action-element-toggle').checked = false;
  } else if (propSel.value === 'surbrillance') {
    surbrillanceSel.style.display = 'block';
    toggleRow.style.display = 'none';
    document.getElementById('nf-action-element-toggle').checked = false;
  } else if (propSel.value === 'desactive') {
    desactiveSel.style.display = 'block';
    toggleRow.style.display = 'none';
    document.getElementById('nf-action-element-toggle').checked = false;
  } else if (propSel.value === 'bg_color' || propSel.value === 'border_color') {
    colorInp.style.display = 'block';
    toggleRow.style.display = 'flex';
  } else {
    numInp.style.display = 'block';
    toggleRow.style.display = 'flex';
  }
  toggleFlowElementToggleMode();
}

function toggleFlowElementToggleMode() {
  var propSel = document.getElementById('nf-action-element-property');
  var checked = document.getElementById('nf-action-element-toggle').checked;
  var wrap = document.getElementById('nf-action-element-value2-wrap');
  var colorInp2 = document.getElementById('nf-action-element-value2-color');
  var numInp2 = document.getElementById('nf-action-element-value2-number');
  var isColor = propSel.value === 'bg_color' || propSel.value === 'border_color';
  wrap.style.display = checked ? 'block' : 'none';
  colorInp2.style.display = (checked && isColor) ? 'block' : 'none';
  numInp2.style.display = (checked && !isColor) ? 'block' : 'none';
}

function submitNodeForm() {
  var payload = { node_type: currentNodeFormType, x: 20, y: 20 + FLOW.nodes.length * 10 };

  if (currentNodeFormType === 'trigger') {
    payload.trigger_event = document.getElementById('nf-trigger-event').value;
    if (payload.trigger_event !== 'affichage') {
      payload.trigger_element_id = parseInt(document.getElementById('nf-trigger-element').value, 10);
    }
  } else if (currentNodeFormType === 'condition') {
    var fieldSel = document.getElementById('nf-cond-field');
    var fieldOpt = fieldSel.options[fieldSel.selectedIndex];
    payload.cond_definition_id = parseInt(document.getElementById('nf-cond-definition').value, 10);
    payload.cond_row_id = parseInt(document.getElementById('nf-cond-row').value, 10) || null;
    payload.cond_field = fieldSel.value;
    payload.cond_field_type = fieldOpt ? fieldOpt.dataset.type : '';
    payload.cond_operator = document.getElementById('nf-cond-operator').value;
    payload.cond_value = document.getElementById('nf-cond-value').value;
    if (flowConditionExtraClauses.length) {
      // 2.4 — clauses combinées : la clause "historique" ci-dessus devient
      // la première clause de la liste, suivie des clauses supplémentaires.
      var allClauses = [{
        definition_id: payload.cond_definition_id, row_id: payload.cond_row_id,
        field: payload.cond_field, field_type: payload.cond_field_type,
        operator: payload.cond_operator, value: payload.cond_value
      }].concat(flowConditionExtraClauses.map(function(c) {
        return {
          definition_id: parseInt(c.definition_id, 10), row_id: parseInt(c.row_id, 10) || null,
          field: c.field, field_type: c.field_type, operator: c.operator, value: c.value
        };
      }));
      payload.cond_clauses = JSON.stringify(allClauses);
      payload.cond_combinator = document.getElementById('nf-cond-combinator').value;
    }
  } else if (currentNodeFormType === 'action') {
    var actionType = document.getElementById('nf-action-type').value;
    payload.action_type = actionType;
    if (actionType === 'aller_a' || actionType === 'ouvrir_ligne') {
      payload.target_screen_id = parseInt(document.getElementById('nf-action-target-screen').value, 10);
    } else if (actionType === 'activer_onglet') {
      payload.target_element_id = parseInt(document.getElementById('nf-action-target-element').value, 10);
    } else if (actionType === 'modifier_element') {
      payload.target_element_id = parseInt(document.getElementById('nf-action-target-element').value, 10);
      var prop = document.getElementById('nf-action-element-property').value;
      payload.element_property = prop;
      var isColorProp = prop === 'bg_color' || prop === 'border_color';
      var toggleOn = prop !== 'visibilite' && prop !== 'surbrillance' && prop !== 'desactive' && document.getElementById('nf-action-element-toggle').checked;
      if (prop === 'visibilite') {
        payload.element_value = document.getElementById('nf-action-element-value-visibility').value;
      } else if (prop === 'surbrillance') {
        payload.element_value = document.getElementById('nf-action-element-value-surbrillance').value;
      } else if (prop === 'desactive') {
        payload.element_value = document.getElementById('nf-action-element-value-desactive').value;
      } else {
        var v1 = isColorProp
          ? document.getElementById('nf-action-element-value-color').value
          : document.getElementById('nf-action-element-value-number').value;
        if (toggleOn) {
          var v2 = isColorProp
            ? document.getElementById('nf-action-element-value2-color').value
            : document.getElementById('nf-action-element-value2-number').value;
          payload.element_value = v1 + '||' + v2;
        } else {
          payload.element_value = v1;
        }
      }
    } else if (actionType === 'modifier_donnee') {
      payload.target_definition_id = parseInt(document.getElementById('nf-action-data-definition').value, 10);
      payload.target_row_id = parseInt(document.getElementById('nf-action-data-row').value, 10) || null;
      payload.target_field = document.getElementById('nf-action-data-field').value;
      payload.data_operation = document.getElementById('nf-action-data-operation').value;
      payload.data_value = document.getElementById('nf-action-data-value').value;
    } else if (actionType === 'attendre') {
      payload.data_value = document.getElementById('nf-action-wait-seconds').value;
    }
  }

  fetch(flowUrl('/screens/' + FLOW_SCREEN_ID + '/flow/nodes/add'), {
    method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(payload)
  }).then(function(r){ return r.json(); }).then(function(node){
    FLOW.nodes.push(node);
    closeNodeForm();
    renderFlow();
  });
}

// Panneau de logique de scène absent sur un écran-modèle (élément de jeu) —
// voir le commentaire Jinja au-dessus de la div flowPanel.
var HAS_FLOW_PANEL = !!document.getElementById('flowPanel');
if (HAS_FLOW_PANEL) { renderFlow(); }

// ---------- Ouverture / fermeture et redimensionnement du panneau du bas ----------

var FLOW_PANEL_DEFAULT_HEIGHT = 340;
var flowPanelLastHeight = FLOW_PANEL_DEFAULT_HEIGHT;

function toggleFlowPanel() {
  var panel = document.getElementById('flowPanel');
  var handle = document.getElementById('flowResizeHandle');
  if (!panel || !handle) return;
  var isOpen = panel.classList.contains('open');
  if (isOpen) {
    flowPanelLastHeight = panel.getBoundingClientRect().height;
    panel.classList.remove('open');
    panel.style.height = '';
    handle.classList.remove('visible');
  } else {
    panel.classList.add('open');
    panel.style.height = flowPanelLastHeight + 'px';
    handle.classList.add('visible');
    requestAnimationFrame(drawFlowEdges);
  }
}

if (HAS_FLOW_PANEL) (function(){
  var handle = document.getElementById('flowResizeHandle');
  var panel = document.getElementById('flowPanel');
  handle.addEventListener('mousedown', function(e){
    e.preventDefault();
    if (!panel.classList.contains('open')) return;
    var startY = e.clientY;
    var startHeight = panel.getBoundingClientRect().height;
    var wrap = document.querySelector('.content-builder');
    var maxHeight = Math.max(160, wrap.getBoundingClientRect().height - 160);
    function onMove(ev) {
      var dy = ev.clientY - startY;
      var newHeight = Math.min(maxHeight, Math.max(140, startHeight - dy));
      panel.style.height = newHeight + 'px';
      flowPanelLastHeight = newHeight;
      drawFlowEdges();
    }
    function onUp() {
      document.removeEventListener('mousemove', onMove);
      document.removeEventListener('mouseup', onUp);
    }
    document.addEventListener('mousemove', onMove);
    document.addEventListener('mouseup', onUp);
  });
})();

// ---------- Timeline d'animation : piste par élément, clips Animate.css ou
// personnalisés (images-clés), glissés/redimensionnés à la souris sur un
// axe du temps en secondes depuis l'affichage de l'écran. Même principe de
// panneau rétractable/redimensionnable que "Logique de la scène"
// ci-dessus, positionné juste en dessous. ----------

var ANIM_SCREEN_ID = {{ screen.id }};
var ANIM_CLIPS = {{ animation_clips_json|safe }};
var ANIMATE_CSS_LABELS = {{ animate_css_labels_json|safe }};
var ANIM_PX_PER_SEC = 60;
var animCurrentClipId = null;

function animUrl(path) { return "/game/{{ game.slug }}" + path; }

function animClipLabel(clip) {
  if (clip.kind === 'custom') return '🎨 Personnalisée';
  return '🎞️ ' + (ANIMATE_CSS_LABELS[clip.animate_name] || clip.animate_name);
}

function renderAnimTimeline() {
  var lanesWrap = document.getElementById('animTracks');
  var ticksWrap = document.getElementById('animRuler');
  if (!lanesWrap || !ticksWrap) return;
  lanesWrap.innerHTML = '';
  ticksWrap.innerHTML = '';

  var maxTime = ANIM_CLIPS.reduce(function(m, c) { return Math.max(m, (c.start_time || 0) + (c.duration || 1)); }, 5);
  var totalSeconds = Math.ceil(maxTime) + 2;
  var totalWidth = totalSeconds * ANIM_PX_PER_SEC;

  var spacer = document.createElement('div');
  spacer.className = 'animRulerSpacer';
  ticksWrap.appendChild(spacer);
  var ticksLane = document.createElement('div');
  ticksLane.className = 'animRulerTicksWrap';
  ticksLane.style.width = totalWidth + 'px';
  for (var s = 0; s <= totalSeconds; s++) {
    var tick = document.createElement('div');
    tick.className = 'animRulerTick';
    tick.style.left = (s * ANIM_PX_PER_SEC) + 'px';
    tick.textContent = s + 's';
    ticksLane.appendChild(tick);
  }
  ticksWrap.appendChild(ticksLane);

  var elementIds = [];
  ANIM_CLIPS.forEach(function(c) { if (elementIds.indexOf(c.element_id) === -1) elementIds.push(c.element_id); });

  if (!elementIds.length) {
    var empty = document.createElement('p');
    empty.className = 'hint';
    empty.style.padding = '10px 0';
    empty.textContent = "Aucun clip pour l'instant — choisis un élément ci-dessus et clique « Ajouter un clip ».";
    lanesWrap.appendChild(empty);
    return;
  }

  elementIds.forEach(function(elId) {
    var track = document.createElement('div');
    track.className = 'animTrack';

    var label = document.createElement('div');
    label.className = 'animTrackLabel';
    label.textContent = ELEMENTS_LABELS[elId] || ('elt-' + elId);
    track.appendChild(label);

    var lane = document.createElement('div');
    lane.className = 'animTrackLane';
    lane.style.width = totalWidth + 'px';

    ANIM_CLIPS.filter(function(c) { return c.element_id === elId; }).forEach(function(clip) {
      var block = document.createElement('div');
      block.className = 'animClip';
      block.style.left = ((clip.start_time || 0) * ANIM_PX_PER_SEC) + 'px';
      block.style.width = Math.max(24, (clip.duration || 1) * ANIM_PX_PER_SEC) + 'px';
      block.textContent = animClipLabel(clip);
      block.dataset.clipId = clip.id;
      block.addEventListener('mousedown', function(e) { onAnimClipMouseDown(e, clip.id); });
      var handle = document.createElement('div');
      handle.className = 'animClipResizeHandle';
      handle.addEventListener('mousedown', function(e) { onAnimClipResizeMouseDown(e, clip.id); });
      block.appendChild(handle);
      lane.appendChild(block);
    });

    track.appendChild(lane);
    lanesWrap.appendChild(track);
  });
}

function onAnimClipMouseDown(e, clipId) {
  if (e.target.classList.contains('animClipResizeHandle')) return;
  e.preventDefault();
  e.stopPropagation();
  var clip = ANIM_CLIPS.find(function(c) { return c.id === clipId; });
  var block = document.querySelector('.animClip[data-clip-id="' + clipId + '"]');
  var startX = e.clientX;
  var startLeft = parseFloat(block.style.left);
  var moved = false;
  function onMove(ev) {
    var dx = ev.clientX - startX;
    if (Math.abs(dx) > 3) moved = true;
    block.style.left = Math.max(0, startLeft + dx) + 'px';
  }
  function onUp() {
    document.removeEventListener('mousemove', onMove);
    document.removeEventListener('mouseup', onUp);
    if (moved) {
      var newStart = Math.round((parseFloat(block.style.left) / ANIM_PX_PER_SEC) * 10) / 10;
      clip.start_time = newStart;
      updateAnimClip(clipId, { start_time: newStart });
    } else {
      openAnimClipForm(clip);
    }
  }
  document.addEventListener('mousemove', onMove);
  document.addEventListener('mouseup', onUp);
}

function onAnimClipResizeMouseDown(e, clipId) {
  e.preventDefault();
  e.stopPropagation();
  var clip = ANIM_CLIPS.find(function(c) { return c.id === clipId; });
  var block = document.querySelector('.animClip[data-clip-id="' + clipId + '"]');
  var startX = e.clientX;
  var startWidth = parseFloat(block.style.width);
  function onMove(ev) {
    var dx = ev.clientX - startX;
    block.style.width = Math.max(10, startWidth + dx) + 'px';
  }
  function onUp() {
    document.removeEventListener('mousemove', onMove);
    document.removeEventListener('mouseup', onUp);
    var newDuration = Math.round((parseFloat(block.style.width) / ANIM_PX_PER_SEC) * 10) / 10;
    clip.duration = newDuration;
    updateAnimClip(clipId, { duration: newDuration });
  }
  document.addEventListener('mousemove', onMove);
  document.addEventListener('mouseup', onUp);
}

function updateAnimClip(clipId, fields) {
  return fetch(animUrl('/animations/clips/' + clipId + '/update'), {
    method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(fields)
  }).then(function(r) { return r.json(); }).then(function(updated) {
    var idx = ANIM_CLIPS.findIndex(function(c) { return c.id === updated.id; });
    if (idx > -1) ANIM_CLIPS[idx] = updated;
    return updated;
  });
}

function addAnimTrack() {
  var elId = parseInt(document.getElementById('anim-new-track-element').value, 10);
  fetch(animUrl('/screens/' + ANIM_SCREEN_ID + '/animations/clips/add'), {
    method: 'POST', headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ element_id: elId, kind: 'animate_css', animate_name: 'fadeIn', start_time: 0, duration: 1 }),
  }).then(function(r) { return r.json(); }).then(function(clip) {
    ANIM_CLIPS.push(clip);
    renderAnimTimeline();
    openAnimClipForm(clip);
  });
}

function toggleAnimClipKind() {
  var kind = document.getElementById('anim-clip-kind').value;
  document.getElementById('anim-clip-animate-css-fields').style.display = kind === 'animate_css' ? 'block' : 'none';
  document.getElementById('anim-clip-custom-fields').style.display = kind === 'custom' ? 'block' : 'none';
}

function addAnimKeyframeRow(percent, cssText) {
  var wrap = document.getElementById('anim-clip-keyframes');
  var row = document.createElement('div');
  row.className = 'fieldRow animKeyframeRow';
  var percentInput = document.createElement('input');
  percentInput.type = 'number'; percentInput.min = '0'; percentInput.max = '100'; percentInput.step = '1';
  percentInput.className = 'anim-kf-percent'; percentInput.style.flex = '0 0 70px';
  percentInput.value = percent != null ? percent : 0;
  var cssInput = document.createElement('textarea');
  cssInput.className = 'anim-kf-css'; cssInput.style.flex = '1'; cssInput.rows = 2;
  cssInput.placeholder = 'ex. opacity: 0; transform: scale(0.5);';
  cssInput.value = cssText || '';
  var removeBtn = document.createElement('button');
  removeBtn.type = 'button'; removeBtn.className = 'smallBtn danger';
  removeBtn.textContent = '✕';
  removeBtn.onclick = function() { row.remove(); };
  row.appendChild(percentInput);
  row.appendChild(cssInput);
  row.appendChild(removeBtn);
  wrap.appendChild(row);
}

function collectAnimKeyframes() {
  var rows = document.querySelectorAll('#anim-clip-keyframes .animKeyframeRow');
  var keyframes = [];
  rows.forEach(function(row) {
    var percent = parseFloat(row.querySelector('.anim-kf-percent').value) || 0;
    var cssText = row.querySelector('.anim-kf-css').value;
    var props = {};
    cssText.split(';').forEach(function(decl) {
      var parts = decl.split(':');
      if (parts.length === 2) {
        var prop = parts[0].trim(), val = parts[1].trim();
        if (prop && val) props[prop] = val;
      }
    });
    keyframes.push({ percent: percent, props: props });
  });
  return keyframes;
}

function openAnimClipForm(clip) {
  animCurrentClipId = clip.id;
  document.getElementById('animClipForm').style.display = 'block';
  document.getElementById('animClipFormTitle').textContent = 'Clip — ' + (ELEMENTS_LABELS[clip.element_id] || ('elt-' + clip.element_id));
  document.getElementById('anim-clip-kind').value = clip.kind || 'animate_css';
  document.getElementById('anim-clip-animate-name').value = clip.animate_name || 'fadeIn';
  document.getElementById('anim-clip-start').value = clip.start_time || 0;
  document.getElementById('anim-clip-duration').value = clip.duration || 1;
  document.getElementById('anim-clip-delay').value = clip.delay || 0;
  document.getElementById('anim-clip-easing').value = clip.easing || 'ease';
  document.getElementById('anim-clip-iteration').value = clip.iteration_count || '1';
  document.getElementById('anim-clip-keyframes').innerHTML = '';
  var keyframes = [];
  if (clip.custom_keyframes) {
    try { keyframes = JSON.parse(clip.custom_keyframes); } catch (e) { /* ignore */ }
  }
  if (!keyframes.length) keyframes = [{ percent: 0, props: { opacity: '0' } }, { percent: 100, props: { opacity: '1' } }];
  keyframes.forEach(function(k) {
    var cssText = Object.keys(k.props || {}).map(function(p) { return p + ': ' + k.props[p] + ';'; }).join(' ');
    addAnimKeyframeRow(k.percent, cssText);
  });
  toggleAnimClipKind();
  document.querySelectorAll('.animClip').forEach(function(b) {
    b.classList.toggle('selected', parseInt(b.dataset.clipId, 10) === clip.id);
  });
}

function closeAnimClipForm() {
  animCurrentClipId = null;
  document.getElementById('animClipForm').style.display = 'none';
  document.querySelectorAll('.animClip').forEach(function(b) { b.classList.remove('selected'); });
}

function saveAnimClipForm() {
  if (!animCurrentClipId) return Promise.resolve();
  var kind = document.getElementById('anim-clip-kind').value;
  var fields = {
    kind: kind,
    animate_name: document.getElementById('anim-clip-animate-name').value,
    start_time: parseFloat(document.getElementById('anim-clip-start').value) || 0,
    duration: parseFloat(document.getElementById('anim-clip-duration').value) || 1,
    delay: parseFloat(document.getElementById('anim-clip-delay').value) || 0,
    easing: document.getElementById('anim-clip-easing').value,
    iteration_count: document.getElementById('anim-clip-iteration').value,
  };
  if (kind === 'custom') fields.custom_keyframes = collectAnimKeyframes();
  return updateAnimClip(animCurrentClipId, fields).then(function() { renderAnimTimeline(); });
}

function deleteAnimClipForm() {
  if (!animCurrentClipId) return;
  if (!confirm('Supprimer ce clip ?')) return;
  var id = animCurrentClipId;
  fetch(animUrl('/animations/clips/' + id + '/delete'), { method: 'POST' }).then(function() {
    ANIM_CLIPS = ANIM_CLIPS.filter(function(c) { return c.id !== id; });
    closeAnimClipForm();
    renderAnimTimeline();
  });
}

function previewAnimClip() {
  if (!animCurrentClipId) return;
  saveAnimClipForm().then(function() {
    var clip = ANIM_CLIPS.find(function(c) { return c.id === animCurrentClipId; });
    if (!clip) return;
    var target = document.querySelector('#canvas [data-anim-target="' + clip.element_id + '"]');
    if (!target) return;
    var duration = clip.duration || 1, delay = clip.delay || 0;
    var iterationCount = clip.iteration_count || '1';
    if (clip.kind === 'custom') {
      var keyframes = [];
      try { keyframes = JSON.parse(clip.custom_keyframes || '[]'); } catch (e) { /* ignore */ }
      var steps = keyframes.map(function(k) {
        var props = Object.keys(k.props || {}).map(function(p) { return p + ':' + k.props[p] + ';'; }).join(' ');
        return k.percent + '% { ' + props + ' }';
      }).join(' ');
      var styleTag = document.getElementById('animEditorPreviewStyle');
      if (!styleTag) {
        styleTag = document.createElement('style');
        styleTag.id = 'animEditorPreviewStyle';
        document.head.appendChild(styleTag);
      }
      styleTag.textContent = '@keyframes animEditorPreview { ' + steps + ' }';
      target.style.animation = 'animEditorPreview ' + duration + 's ' + (clip.easing || 'ease') + ' ' + delay + 's ' + iterationCount;
      target.addEventListener('animationend', function handler() {
        target.style.animation = '';
        target.removeEventListener('animationend', handler);
      });
    } else {
      var animClass = 'animate__' + clip.animate_name;
      target.style.setProperty('--animate-duration', duration + 's');
      target.style.setProperty('--animate-delay', delay + 's');
      target.style.animationIterationCount = iterationCount;
      target.classList.add('animate__animated', animClass);
      target.addEventListener('animationend', function handler() {
        target.classList.remove('animate__animated', animClass);
        target.removeEventListener('animationend', handler);
      });
    }
  });
}

// Panneau timeline absent sur un écran-modèle (élément de jeu), comme le
// panneau de logique — voir le commentaire Jinja au-dessus de la div animPanel.
var HAS_ANIM_PANEL = !!document.getElementById('animPanel');
if (HAS_ANIM_PANEL) { renderAnimTimeline(); }

var ANIM_PANEL_DEFAULT_HEIGHT = 260;
var animPanelLastHeight = ANIM_PANEL_DEFAULT_HEIGHT;

function toggleAnimPanel() {
  var panel = document.getElementById('animPanel');
  var handle = document.getElementById('animResizeHandle');
  if (!panel || !handle) return;
  var isOpen = panel.classList.contains('open');
  if (isOpen) {
    animPanelLastHeight = panel.getBoundingClientRect().height;
    panel.classList.remove('open');
    panel.style.height = '';
    handle.classList.remove('visible');
  } else {
    panel.classList.add('open');
    panel.style.height = animPanelLastHeight + 'px';
    handle.classList.add('visible');
  }
}

if (HAS_ANIM_PANEL) (function() {
  var handle = document.getElementById('animResizeHandle');
  var panel = document.getElementById('animPanel');
  handle.addEventListener('mousedown', function(e) {
    e.preventDefault();
    if (!panel.classList.contains('open')) return;
    var startY = e.clientY;
    var startHeight = panel.getBoundingClientRect().height;
    var wrap = document.querySelector('.content-builder');
    var maxHeight = Math.max(160, wrap.getBoundingClientRect().height - 160);
    function onMove(ev) {
      var dy = ev.clientY - startY;
      var newHeight = Math.min(maxHeight, Math.max(140, startHeight - dy));
      panel.style.height = newHeight + 'px';
      animPanelLastHeight = newHeight;
    }
    function onUp() {
      document.removeEventListener('mousemove', onMove);
      document.removeEventListener('mouseup', onUp);
    }
    document.addEventListener('mousemove', onMove);
    document.addEventListener('mouseup', onUp);
  });
})();
</script>
{% endblock %}