const FLOW_NODE_META = Object.freeze({
  weekday: { titleKey: 'flow.node.weekday', category: 'time' },
  time_range: { titleKey: 'flow.node.timeRange', category: 'time' },
  date_range: { titleKey: 'flow.node.dateRange', category: 'time' },
  outdoor_temperature: { titleKey: 'flow.node.outdoorTemperature', category: 'sensor' },
  device_temperature: { titleKey: 'flow.node.deviceTemperature', category: 'sensor' },
  zone_temperature: { titleKey: 'flow.node.zoneTemperature', category: 'sensor' },
  ha_state: { titleKey: 'flow.node.haState', category: 'sensor' },
  ha_numeric: { titleKey: 'flow.node.haNumeric', category: 'sensor' },
  ha_attribute: { titleKey: 'flow.node.haAttribute', category: 'sensor' },
  ha_available: { titleKey: 'flow.node.haAvailable', category: 'sensor' },
  house_mode: { titleKey: 'flow.node.houseMode', category: 'sensor' },
  device_state: { titleKey: 'flow.node.deviceState', category: 'sensor' },
  zone_state: { titleKey: 'flow.node.zoneState', category: 'sensor' },
  group_state: { titleKey: 'flow.node.groupState', category: 'sensor' },
  night_mode: { titleKey: 'flow.node.nightMode', category: 'time' },
  constant: { titleKey: 'flow.node.constant', category: 'sensor' },
  logic_and: { titleKey: 'flow.node.and', category: 'logic' },
  logic_or: { titleKey: 'flow.node.or', category: 'logic' },
  logic_not: { titleKey: 'flow.node.not', category: 'logic' },
  zone_thermostat: { titleKey: 'flow.node.thermostat', category: 'action' },
  device_action: { titleKey: 'flow.node.greeDevice', category: 'action' },
  group_action: { titleKey: 'flow.node.group', category: 'action' },
});

function newFlowId(prefix = 'node') {
  if (crypto?.randomUUID) return `${prefix}-${crypto.randomUUID()}`;
  return `${prefix}-${Date.now()}-${Math.random().toString(16).slice(2)}`;
}

function flowDefaultConfig(kind) {
  if (kind === 'weekday') return { days: [1, 2, 3, 4, 5] };
  if (kind === 'time_range') return { start: '06:00', end: '08:00' };
  if (kind === 'date_range') { const today = new Date().toISOString().slice(0, 10); return { start: today, end: today }; }
  if (kind === 'outdoor_temperature') return { operator: 'lt', value: 5 };
  if (kind === 'device_temperature') return { device_id: app.devices[0]?.id || '', operator: 'lt', value: 20 };
  if (kind === 'zone_temperature') return { zone_id: app.zones[0]?.id || '', operator: 'lt', value: 20 };
  if (kind === 'ha_state') return { entity_id: '', operator: 'eq', value: 'on' };
  if (kind === 'ha_numeric') return { entity_id: '', operator: 'lt', value: 20 };
  if (kind === 'ha_attribute') return { entity_id: '', attribute: '', operator: 'eq', value: '' };
  if (kind === 'ha_available') return { entity_id: '' };
  if (kind === 'house_mode') return { operator: 'eq', value: 'cool' };
  if (kind === 'device_state') return { device_id: app.devices[0]?.id || '', field: 'online', operator: 'eq', value: 'true' };
  if (kind === 'zone_state') return { zone_id: app.zones[0]?.id || '', field: 'demand', operator: 'eq', value: 'true' };
  if (kind === 'group_state') return { group_id: app.groups[0]?.id || '', field: 'power_enabled', operator: 'eq', value: 'true' };
  if (kind === 'night_mode') return {};
  if (kind === 'constant') return { value: true };
  if (kind === 'zone_thermostat') return { zone_id: app.zones[0]?.id || '', preset: 'comfort', setpoint: 21, mode: 'auto', cooldown_seconds: 60 };
  if (kind === 'device_action') return { device_id: app.devices[0]?.id || '', power: true, mode: '', target_temperature: null, fan_speed: null, swing_vertical: null, swing_horizontal: null, quiet: null, turbo: null, light: null, air: null, xfan: null, health: null, sleep: null, cooldown_seconds: 60 };
  if (kind === 'group_action') return { group_id: app.groups[0]?.id || '', power: true, mode: '', preset: '', setpoint: 21, cooldown_seconds: 60 };
  return {};
}

function renderFlows() {
  const host = $('#flowList'); if (!host) return;
  host.innerHTML = app.flows.length ? app.flows.map(flow => `<article class="list-card flow-card">
    <div class="list-card-head"><div><h3>${esc(flow.name)}</h3><p>${esc(flow.description || tr('flow.defaultDescription'))}</p></div><span class="badge ${flow.enabled ? 'active' : ''}">${esc(flow.enabled ? tr('common.enabled') : tr('common.disabled'))}</span></div>
    <div class="card-stats"><div class="card-stat"><small>${esc(tr('flow.blocks'))}</small><strong>${flow.nodes?.length || 0}</strong></div><div class="card-stat"><small>${esc(tr('nav.schedules'))}</small><strong>${flow.compiled_schedule_ids?.length || 0}</strong></div><div class="card-stat"><small>${esc(tr('nav.automations'))}</small><strong>${flow.compiled_automation_ids?.length || 0}</strong></div></div>
    <div class="card-footer"><small>${esc(tr('flow.compileCount', { schedules: flow.compiled_schedule_ids?.length || 0, automations: flow.compiled_automation_ids?.length || 0 }))}</small><div class="card-menu"><button data-action="edit-flow" data-id="${esc(flow.id)}">${esc(tr('flow.openEditor'))}</button><button class="danger" data-action="delete-flow" data-id="${esc(flow.id)}">${esc(tr('actions.delete'))}</button></div></div>
  </article>`).join('') : `<div class="empty"><strong>${esc(tr('flow.emptyTitle'))}</strong>${esc(tr('flow.emptyText'))}</div>`;
}

function flowDraftFrom(flow) {
  return flow ? JSON.parse(JSON.stringify(flow)) : {
    id: '', revision: 0, name: tr('flow.newDefaultName'), enabled: true, description: '', nodes: [], edges: [], summary: '', compiled_schedule_ids: [], compiled_automation_ids: [],
  };
}

function openFlowEditor(id = '', { push = true } = {}) {
  const flow = id ? app.flows.find(item => item.id === id) : null;
  if (id && !flow) return toast(tr('flow.notFound'), true);
  app.flowDraft = flowDraftFrom(flow);
  app.flowSelectedNodeId = null; app.flowConnectFrom = null; app.flowDirty = false;
  $('#flowName').value = app.flowDraft.name || '';
  $('#flowEnabled').checked = app.flowDraft.enabled !== false;
  $('#flowEditor').hidden = false;
  document.body.classList.add('flow-editor-open');
  renderFlowEditor();
  if (push) updateBrowserUrl(`/flows/${flow?.id || 'new'}`);
}

function closeFlowEditor({ push = true, force = false } = {}) {
  if (!force && app.flowDirty && !confirm(tr('confirm.discardChanges'))) return false;
  $('#flowEditor').hidden = true; document.body.classList.remove('flow-editor-open');
  app.flowDraft = null; app.flowSelectedNodeId = null; app.flowConnectFrom = null; app.flowDirty = false;
  if (push) updateBrowserUrl('/flows');
  return true;
}

function flowNodeSummary(node) {
  const c = node.config || {};
  if (node.kind === 'weekday') return (c.days || []).map(day => tr(`day.${day}`)).join(', ') || '—';
  if (node.kind === 'time_range') return `${c.start || '—'}–${c.end || '—'}`;
  if (node.kind === 'date_range') return `${c.start || '—'} → ${c.end || '—'}`;
  if (node.kind === 'outdoor_temperature') return `${flowOperatorLabel(c.operator)} ${fmtTemp(c.value)}`;
  if (node.kind === 'device_temperature') return `${app.devices.find(d => d.id === c.device_id)?.name || tr('common.noDevice')} · ${flowOperatorLabel(c.operator)} ${fmtTemp(c.value)}`;
  if (node.kind === 'zone_temperature') return `${app.zones.find(z => z.id === c.zone_id)?.name || tr('common.noZone')} · ${flowOperatorLabel(c.operator)} ${fmtTemp(c.value)}`;
  if (node.kind === 'ha_state') return `${c.entity_id || 'entity_id'} ${c.operator === 'neq' ? '≠' : '='} ${c.value || '—'}`;
  if (node.kind === 'ha_numeric') return `${c.entity_id || 'entity_id'} · ${flowOperatorLabel(c.operator)} ${c.value ?? '—'}`;
  if (node.kind === 'ha_attribute') return `${c.entity_id || 'entity_id'}.${c.attribute || 'attribute'} ${flowOperatorLabel(c.operator)} ${c.value ?? '—'}`;
  if (node.kind === 'ha_available') return `${c.entity_id || 'entity_id'} · ${tr('flow.available')}`;
  if (node.kind === 'house_mode') return `${tr('flow.houseMode')} ${flowOperatorLabel(c.operator)} ${c.value || '—'}`;
  if (node.kind === 'device_state') return `${app.devices.find(d => d.id === c.device_id)?.name || tr('common.noDevice')} · ${c.field || 'state'} ${flowOperatorLabel(c.operator)} ${c.value ?? '—'}`;
  if (node.kind === 'zone_state') return `${app.zones.find(z => z.id === c.zone_id)?.name || tr('common.noZone')} · ${c.field || 'state'} ${flowOperatorLabel(c.operator)} ${c.value ?? '—'}`;
  if (node.kind === 'group_state') return `${app.groups.find(g => g.id === c.group_id)?.name || tr('groups.group')} · ${c.field || 'power_enabled'} ${flowOperatorLabel(c.operator)} ${c.value ?? '—'}`;
  if (node.kind === 'night_mode') return tr('flow.nightModeActive');
  if (node.kind === 'constant') return c.value === false ? tr('common.no') : tr('common.yes');
  if (node.kind === 'logic_and') return tr('flow.allConditions');
  if (node.kind === 'logic_or') return tr('flow.anyCondition');
  if (node.kind === 'logic_not') return tr('flow.invertCondition');
  if (node.kind === 'zone_thermostat') { const zone = app.zones.find(z => z.id === c.zone_id); return `${zone?.name || tr('common.noZone')} · ${c.preset === 'custom' ? fmtTemp(c.setpoint) : zonePresetLabel(c.preset || 'comfort')}`; }
  if (node.kind === 'device_action') { const d = app.devices.find(v => v.id === c.device_id); return `${d?.name || tr('common.noDevice')} · ${c.power == null ? tr('actions.noChange') : c.power ? tr('common.on') : tr('common.off')}`; }
  if (node.kind === 'group_action') { const g = app.groups.find(v => v.id === c.group_id); return `${g?.name || tr('groups.group')} · ${c.power == null ? tr('actions.noChange') : c.power ? tr('common.on') : tr('common.off')}`; }
  return '';
}

function flowNodeTitle(meta) { return meta?.titleKey ? tr(meta.titleKey) : (meta?.title || ''); }
function flowOperatorLabel(op) { return ({ lt: '<', lte: '≤', gt: '>', gte: '≥', eq: '=', neq: '≠' })[op] || '<'; }
function flowNodeById(id) { return app.flowDraft?.nodes?.find(node => node.id === id); }

function renderFlowEditor() {
  const draft = app.flowDraft; if (!draft) return;
  const nodesHost = $('#flowNodes');
  nodesHost.innerHTML = draft.nodes.map(node => {
    const meta = FLOW_NODE_META[node.kind] || { title: node.kind, category: 'logic' };
    return `<article class="flow-node flow-node-${esc(meta.category)} ${app.flowSelectedNodeId === node.id ? 'selected' : ''}" data-flow-node="${esc(node.id)}" style="left:${Number(node.x || 0)}px;top:${Number(node.y || 0)}px">
      <button class="flow-port flow-port-in" type="button" data-flow-input="${esc(node.id)}" title="${esc(tr('flow.connectHere'))}"></button>
      <div class="flow-node-head"><span>${esc(flowNodeTitle(meta))}</span><button type="button" data-flow-remove="${esc(node.id)}" aria-label="${esc(tr('actions.delete'))}">×</button></div>
      <div class="flow-node-body">${esc(flowNodeSummary(node))}</div>
      <button class="flow-port flow-port-out ${app.flowConnectFrom === node.id ? 'armed' : ''}" type="button" data-flow-output="${esc(node.id)}" title="${esc(tr('flow.startConnection'))}"></button>
    </article>`;
  }).join('');
  $('#flowEmptyHint').hidden = draft.nodes.length > 0;
  renderFlowEdges(); renderFlowInspector(); renderFlowInterpretation();
  const status = $('#flowCompileStatus');
  status.textContent = tr('flow.compileCount', { schedules: draft.compiled_schedule_ids?.length || 0, automations: draft.compiled_automation_ids?.length || 0 });
}

function renderFlowEdges() {
  const svg = $('#flowEdges'), workspace = $('#flowWorkspace'); if (!svg || !workspace || !app.flowDraft) return;
  const rect = workspace.getBoundingClientRect();
  svg.setAttribute('viewBox', `0 0 ${Math.max(workspace.clientWidth, workspace.scrollWidth)} ${Math.max(workspace.clientHeight, workspace.scrollHeight)}`);
  svg.innerHTML = app.flowDraft.edges.map(edge => {
    const from = $(`[data-flow-node="${CSS.escape(edge.from)}"]`), to = $(`[data-flow-node="${CSS.escape(edge.to)}"]`); if (!from || !to) return '';
    const a = from.getBoundingClientRect(), b = to.getBoundingClientRect();
    const x1 = a.right - rect.left + workspace.scrollLeft - 2, y1 = a.top - rect.top + workspace.scrollTop + a.height / 2;
    const x2 = b.left - rect.left + workspace.scrollLeft + 2, y2 = b.top - rect.top + workspace.scrollTop + b.height / 2;
    const bend = Math.max(55, Math.abs(x2 - x1) * .45);
    return `<path data-flow-edge="${esc(edge.id)}" d="M ${x1} ${y1} C ${x1 + bend} ${y1}, ${x2 - bend} ${y2}, ${x2} ${y2}"/>`;
  }).join('');
}

function flowSelectOptions(items, selected, nameFn = item => item.name) {
  return items.map(item => `<option value="${esc(item.id)}" ${item.id === selected ? 'selected' : ''}>${esc(nameFn(item))}</option>`).join('');
}
function flowOperatorOptions(selected) { return [['lt','<'],['lte','≤'],['gt','>'],['gte','≥'],['eq','='],['neq','≠']].map(([v,l]) => `<option value="${v}" ${v === selected ? 'selected' : ''}>${l}</option>`).join(''); }

function renderFlowInspector() {
  const host = $('#flowInspector'), node = flowNodeById(app.flowSelectedNodeId); if (!host) return;
  if (!node) { host.innerHTML = `<div class="empty compact"><strong>${esc(tr('flow.selectBlock'))}</strong><span>${esc(tr('flow.selectBlockHint'))}</span></div>`; return; }
  const c = node.config || {}, meta = FLOW_NODE_META[node.kind] || { title: node.kind };
  let fields = '';
  if (node.kind === 'weekday') fields = `<div class="flow-day-grid">${[1,2,3,4,5,6,7].map(day => `<label><input type="checkbox" data-flow-config="days" value="${day}" ${(c.days || []).includes(day) ? 'checked' : ''}><span>${esc(tr(`day.${day}`))}</span></label>`).join('')}</div>`;
  else if (node.kind === 'time_range') fields = `<div class="two"><label><span>${esc(tr('common.from'))}</span><input type="time" data-flow-config="start" value="${esc(c.start || '06:00')}"></label><label><span>${esc(tr('common.to'))}</span><input type="time" data-flow-config="end" value="${esc(c.end || '08:00')}"></label></div>`;
  else if (node.kind === 'date_range') fields = `<div class="two"><label><span>${esc(tr('common.from'))}</span><input type="date" data-flow-config="start" value="${esc(c.start || '')}"></label><label><span>${esc(tr('common.to'))}</span><input type="date" data-flow-config="end" value="${esc(c.end || '')}"></label></div>`;
  else if (node.kind === 'outdoor_temperature') fields = flowComparisonFields(c);
  else if (node.kind === 'device_temperature') fields = `<label><span>${esc(tr('common.device'))}</span><select data-flow-config="device_id">${flowSelectOptions(app.devices, c.device_id)}</select></label>${flowComparisonFields(c)}`;
  else if (node.kind === 'zone_temperature') fields = `<label><span>${esc(tr('common.zone'))}</span><select data-flow-config="zone_id">${flowSelectOptions(app.zones, c.zone_id)}</select></label>${flowComparisonFields(c)}`;
  else if (node.kind === 'ha_state') fields = `<label><span>entity_id</span><input data-flow-config="entity_id" value="${esc(c.entity_id || '')}" placeholder="binary_sensor.window"></label><div class="two"><label><span>${esc(tr('flow.operator'))}</span><select data-flow-config="operator"><option value="eq" ${c.operator !== 'neq' ? 'selected' : ''}>=</option><option value="neq" ${c.operator === 'neq' ? 'selected' : ''}>≠</option></select></label><label><span>${esc(tr('flow.state'))}</span><input data-flow-config="value" value="${esc(c.value || '')}" placeholder="on"></label></div>`;
  else if (node.kind === 'ha_numeric') fields = `<label><span>entity_id</span><input data-flow-config="entity_id" value="${esc(c.entity_id || '')}" placeholder="sensor.outdoor_temperature"></label>${flowComparisonFields(c, false)}`;
  else if (node.kind === 'ha_attribute') fields = `<label><span>entity_id</span><input data-flow-config="entity_id" value="${esc(c.entity_id || '')}" placeholder="climate.living_room"></label><label><span>${esc(tr('flow.attribute'))}</span><input data-flow-config="attribute" value="${esc(c.attribute || '')}" placeholder="hvac_action"></label>${flowTextComparisonFields(c, true)}`;
  else if (node.kind === 'ha_available') fields = `<label><span>entity_id</span><input data-flow-config="entity_id" value="${esc(c.entity_id || '')}" placeholder="binary_sensor.window"></label><p class="field-note">${esc(tr('flow.haAvailableHint'))}</p>`;
  else if (node.kind === 'house_mode') fields = `<div class="two"><label><span>${esc(tr('flow.operator'))}</span><select data-flow-config="operator"><option value="eq" ${c.operator !== 'neq' ? 'selected' : ''}>=</option><option value="neq" ${c.operator === 'neq' ? 'selected' : ''}>≠</option></select></label><label><span>${esc(tr('flow.houseMode'))}</span><select data-flow-config="value">${['cool','heat','off'].map(v => `<option value="${v}" ${c.value === v ? 'selected' : ''}>${esc(v === 'off' ? tr('common.off') : tr(`mode.${v}`))}</option>`).join('')}</select></label></div>`;
  else if (node.kind === 'device_state') fields = `<label><span>${esc(tr('common.device'))}</span><select data-flow-config="device_id">${flowSelectOptions(app.devices, c.device_id)}</select></label><label><span>${esc(tr('flow.field'))}</span><select data-flow-config="field">${['enabled','online','power','mode','fan_speed','swing_vertical','swing_horizontal','quiet','turbo','light','air','xfan','health','sleep'].map(v => `<option value="${v}" ${c.field === v ? 'selected' : ''}>${esc(v)}</option>`).join('')}</select></label>${flowTextComparisonFields(c)}`;
  else if (node.kind === 'zone_state') fields = `<label><span>${esc(tr('common.zone'))}</span><select data-flow-config="zone_id">${flowSelectOptions(app.zones, c.zone_id)}</select></label><label><span>${esc(tr('flow.field'))}</span><select data-flow-config="field">${['enabled','mode','active_preset','demand','control_owner','device_manual_override','local_thermostat_power'].map(v => `<option value="${v}" ${c.field === v ? 'selected' : ''}>${esc(v)}</option>`).join('')}</select></label>${flowTextComparisonFields(c)}`;
  else if (node.kind === 'group_state') fields = `<label><span>${esc(tr('groups.group'))}</span><select data-flow-config="group_id">${flowSelectOptions(app.groups, c.group_id)}</select></label><label><span>${esc(tr('flow.field'))}</span><select data-flow-config="field"><option value="power_enabled" selected>power_enabled</option></select></label>${flowTextComparisonFields(c)}`;
  else if (node.kind === 'night_mode') fields = `<p class="field-note">${esc(tr('flow.nightModeHint'))}</p>`;
  else if (node.kind === 'constant') fields = `<label><span>${esc(tr('flow.value'))}</span><select data-flow-config="value"><option value="true" ${c.value !== false ? 'selected' : ''}>${esc(tr('common.yes'))}</option><option value="false" ${c.value === false ? 'selected' : ''}>${esc(tr('common.no'))}</option></select></label>`;
  else if (node.kind === 'logic_and') fields = `<p class="field-note">${esc(tr('flow.andHint'))}</p>`;
  else if (node.kind === 'logic_or') fields = `<p class="field-note">${esc(tr('flow.orHint'))}</p>`;
  else if (node.kind === 'logic_not') fields = `<p class="field-note">${esc(tr('flow.notHint'))}</p>`;
  else if (node.kind === 'zone_thermostat') fields = `<label><span>${esc(tr('common.zone'))}</span><select data-flow-config="zone_id">${flowSelectOptions(app.zones, c.zone_id)}</select></label><div class="two"><label><span>${esc(tr('schedules.profile'))}</span><select data-flow-config="preset">${['auto','comfort','sleep','away','custom'].map(v => `<option value="${v}" ${c.preset === v ? 'selected' : ''}>${esc(zonePresetLabel(v))}</option>`).join('')}</select></label><label><span>${esc(tr('common.targetC'))}</span><input type="number" min="8" max="30" step="0.5" data-flow-config="setpoint" value="${Number(c.setpoint ?? 21)}"></label></div><div class="two"><label><span>${esc(tr('common.mode'))}</span><select data-flow-config="mode"><option value="auto" ${c.mode === 'auto' ? 'selected' : ''}>Auto</option><option value="heat" ${c.mode === 'heat' ? 'selected' : ''}>${esc(tr('mode.heat'))}</option><option value="cool" ${c.mode === 'cool' ? 'selected' : ''}>${esc(tr('mode.cool'))}</option></select></label><label><span>${esc(tr('common.power'))}</span><select data-flow-config="power"><option value="" ${c.power == null ? 'selected' : ''}>${esc(tr('actions.noChange'))}</option><option value="true" ${c.power === true ? 'selected' : ''}>${esc(tr('common.on'))}</option><option value="false" ${c.power === false ? 'selected' : ''}>${esc(tr('common.off'))}</option></select></label></div><label><span>${esc(tr('common.cooldownSeconds'))}</span><input type="number" min="30" data-flow-config="cooldown_seconds" value="${Number(c.cooldown_seconds || 60)}"></label>`;
  else if (node.kind === 'device_action') fields = `<label><span>${esc(tr('common.device'))}</span><select data-flow-config="device_id">${flowSelectOptions(app.devices, c.device_id)}</select></label>${flowActionFields(c, false)}`;
  else if (node.kind === 'group_action') fields = `<label><span>${esc(tr('groups.group'))}</span><select data-flow-config="group_id">${flowSelectOptions(app.groups, c.group_id)}</select></label>${flowActionFields(c, true)}`;
  host.innerHTML = `<div class="flow-inspector-head"><div><span class="eyebrow">${esc(tr('flow.blockSettings'))}</span><h3>${esc(flowNodeTitle(meta))}</h3></div><button type="button" class="danger" data-flow-remove="${esc(node.id)}">${esc(tr('actions.delete'))}</button></div>${fields}<div class="flow-inspector-meta"><small>ID</small><code>${esc(node.id)}</code></div>`;
}

function flowTextComparisonFields(c, numeric = false) { const options = numeric ? flowOperatorOptions(c.operator || 'eq') : [['eq','='],['neq','≠']].map(([v,l]) => `<option value="${v}" ${v === (c.operator || 'eq') ? 'selected' : ''}>${l}</option>`).join(''); return `<div class="two"><label><span>${esc(tr('flow.operator'))}</span><select data-flow-config="operator">${options}</select></label><label><span>${esc(tr('flow.value'))}</span><input data-flow-config="value" value="${esc(c.value ?? '')}"></label></div>`; }
function flowComparisonFields(c, temperature = true) { return `<div class="two"><label><span>${esc(tr('flow.operator'))}</span><select data-flow-config="operator">${flowOperatorOptions(c.operator || 'lt')}</select></label><label><span>${esc(temperature ? tr('automations.thresholdC') : tr('flow.value'))}</span><input type="number" step="0.1" data-flow-config="value" value="${Number(c.value ?? 0)}"></label></div>`; }
function flowOptionalBoolField(c, key) {
  return `<label><span>${esc(key)}</span><select data-flow-config="${esc(key)}"><option value="" ${c[key] == null ? 'selected' : ''}>${esc(tr('actions.noChange'))}</option><option value="true" ${c[key] === true ? 'selected' : ''}>${esc(tr('common.on'))}</option><option value="false" ${c[key] === false ? 'selected' : ''}>${esc(tr('common.off'))}</option></select></label>`;
}
function flowActionFields(c, group) {
  const modes = group ? ['auto','house','heat','cool'] : ['auto','cool','dry','fan','heat'];
  const modeOptions = modes.map(v => `<option value="${v}" ${c.mode === v ? 'selected' : ''}>${esc(v === 'auto' ? 'Auto' : v === 'house' ? tr('flow.houseMode') : (tr(`mode.${v}`) || v))}</option>`).join('');
  const base = `<div class="two"><label><span>${esc(tr('common.power'))}</span><select data-flow-config="power"><option value="" ${c.power == null ? 'selected' : ''}>${esc(tr('actions.noChange'))}</option><option value="true" ${c.power === true ? 'selected' : ''}>${esc(tr('common.on'))}</option><option value="false" ${c.power === false ? 'selected' : ''}>${esc(tr('common.off'))}</option></select></label><label><span>${esc(tr('common.mode'))}</span><select data-flow-config="mode"><option value="">${esc(tr('actions.noChange'))}</option>${modeOptions}</select></label></div>`;
  const target = group
    ? `<label><span>${esc(tr('groups.profile'))}</span><select data-flow-config="preset"><option value="">${esc(tr('actions.noChange'))}</option>${['auto','comfort','sleep','away','custom'].map(v => `<option value="${v}" ${c.preset === v ? 'selected' : ''}>${esc(zonePresetLabel(v))}</option>`).join('')}</select></label><label><span>${esc(tr('common.targetC'))}</span><input type="number" min="8" max="30" step="0.5" data-flow-config="setpoint" value="${c.setpoint ?? 21}"></label>`
    : `<label><span>${esc(tr('common.targetC'))}</span><input type="number" min="8" max="30" step="0.5" data-flow-config="target_temperature" value="${c.target_temperature ?? ''}"></label>`;
  const deviceOptions = group ? '' : `<details class="flow-device-options"><summary>${esc(tr('flow.deviceOptions'))}</summary><div class="two"><label><span>fan_speed</span><select data-flow-config="fan_speed"><option value="" ${c.fan_speed == null ? 'selected' : ''}>${esc(tr('actions.noChange'))}</option>${[0,1,2,3,4,5].map(v => `<option value="${v}" ${Number(c.fan_speed) === v ? 'selected' : ''}>${v}</option>`).join('')}</select></label>${flowOptionalBoolField(c,'swing_vertical')}${flowOptionalBoolField(c,'swing_horizontal')}${flowOptionalBoolField(c,'quiet')}${flowOptionalBoolField(c,'turbo')}${flowOptionalBoolField(c,'light')}${flowOptionalBoolField(c,'air')}${flowOptionalBoolField(c,'xfan')}${flowOptionalBoolField(c,'health')}${flowOptionalBoolField(c,'sleep')}</div><p class="field-note">${esc(tr('flow.deviceOptionsHint'))}</p></details>`;
  return `${base}${target}${deviceOptions}<label><span>${esc(tr('common.cooldownSeconds'))}</span><input type="number" min="30" data-flow-config="cooldown_seconds" value="${Number(c.cooldown_seconds || 60)}"></label>`;
}

function flowExpressionSummary(actionId) {
  if (!app.flowDraft) return '';
  const byId = new Map(app.flowDraft.nodes.map(node => [node.id, node]));
  const incoming = id => app.flowDraft.edges.filter(edge => edge.to === id).map(edge => edge.from);
  const describe = (id, stack = new Set()) => {
    if (stack.has(id)) return '…';
    const node = byId.get(id); if (!node) return '';
    const next = new Set(stack); next.add(id);
    const parts = incoming(id).map(input => describe(input, next)).filter(Boolean);
    if (node.kind === 'logic_and') return `(${parts.join(` ${tr('flow.and')} `)})`;
    if (node.kind === 'logic_or') return `(${parts.join(` ${tr('flow.or')} `)})`;
    if (node.kind === 'logic_not') return `${tr('flow.not')} (${parts[0] || '—'})`;
    const own = flowNodeSummary(node);
    return parts.length ? `(${parts.join(` ${tr('flow.and')} `)}) ${tr('flow.and')} ${own}` : own;
  };
  const roots = incoming(actionId).map(id => describe(id)).filter(Boolean);
  return roots.length ? roots.join(` ${tr('flow.and')} `) : tr('flow.always');
}

function renderFlowInterpretation() {
  const target = $('#flowInterpretation'); if (!target || !app.flowDraft) return;
  const actions = app.flowDraft.nodes.filter(node => FLOW_NODE_META[node.kind]?.category === 'action');
  if (!actions.length) { target.textContent = tr('flow.noActionsYet'); return; }
  target.textContent = actions.map(action => `${flowExpressionSummary(action.id)} → ${flowNodeTitle(FLOW_NODE_META[action.kind])}: ${flowNodeSummary(action)}`).join(' · ');
}

function flowUpstreamNodes(id) {
  if (!app.flowDraft) return [];
  const byId = new Map(app.flowDraft.nodes.map(node => [node.id, node])); const seen = new Set(), stack = [id], out = [];
  while (stack.length) { const current = stack.pop(); app.flowDraft.edges.filter(edge => edge.to === current).forEach(edge => { if (seen.has(edge.from)) return; seen.add(edge.from); const node = byId.get(edge.from); if (node) { out.push(node); stack.push(node.id); } }); }
  return out;
}

function addFlowNode(kind) {
  if (!app.flowDraft || !FLOW_NODE_META[kind]) return;
  const count = app.flowDraft.nodes.length;
  const node = { id: newFlowId('node'), kind, x: 80 + (count % 5) * 190, y: 70 + Math.floor(count / 5) * 130, config: flowDefaultConfig(kind) };
  app.flowDraft.nodes.push(node); app.flowSelectedNodeId = node.id; app.flowDirty = true; renderFlowEditor();
}
function removeFlowNode(id) {
  if (!app.flowDraft) return;
  app.flowDraft.nodes = app.flowDraft.nodes.filter(node => node.id !== id); app.flowDraft.edges = app.flowDraft.edges.filter(edge => edge.from !== id && edge.to !== id);
  if (app.flowSelectedNodeId === id) app.flowSelectedNodeId = null; if (app.flowConnectFrom === id) app.flowConnectFrom = null; app.flowDirty = true; renderFlowEditor();
}
function connectFlowNodes(from, to) {
  if (!app.flowDraft || !from || !to || from === to) return;
  if (app.flowDraft.edges.some(edge => edge.from === from && edge.to === to)) return;
  app.flowDraft.edges.push({ id: newFlowId('edge'), from, to }); app.flowDirty = true; app.flowConnectFrom = null; renderFlowEditor();
}
function removeFlowEdge(id) {
  if (!app.flowDraft) return;
  app.flowDraft.edges = app.flowDraft.edges.filter(edge => edge.id !== id); app.flowDirty = true; renderFlowEditor();
}


function flowSourcePayload() {
  if (!app.flowDraft) return null;
  return {
    name: ($('#flowName')?.value || app.flowDraft.name || '').trim(),
    enabled: $('#flowEnabled')?.checked !== false,
    description: app.flowDraft.description || '',
    nodes: app.flowDraft.nodes || [], edges: app.flowDraft.edges || [],
  };
}

function downloadJsonFile(filename, data) {
  const blob = new Blob([JSON.stringify(data, null, 2)], { type: 'application/json' });
  const url = URL.createObjectURL(blob); const a = document.createElement('a');
  a.href = url; a.download = filename; document.body.appendChild(a); a.click(); a.remove();
  setTimeout(() => URL.revokeObjectURL(url), 0);
}

async function exportFlow() {
  if (!app.flowDraft) return;
  try {
    const envelope = app.flowDraft.id && !app.flowDirty
      ? await api(`/api/flows/${encodeURIComponent(app.flowDraft.id)}/export`)
      : { format: 'gree-controller-flow', version: 1, exported_at: new Date().toISOString(), flow: flowSourcePayload() };
    const safe = (flowSourcePayload()?.name || 'flow').replace(/[^a-z0-9_-]+/gi, '-').replace(/^-+|-+$/g, '').toLowerCase() || 'flow';
    downloadJsonFile(`${safe}.flow.json`, envelope); toast(tr('flow.exported'));
  } catch (error) { toast(error.message, true); }
}

async function importFlowFile(file) {
  if (!file) return;
  try {
    const payload = JSON.parse(await file.text());
    const saved = await api('/api/flows/import', { method: 'POST', body: payload });
    const index = app.flows.findIndex(flow => flow.id === saved.id); if (index >= 0) app.flows[index] = saved; else app.flows.push(saved);
    renderFlows(); await loadBootstrap(); openFlowEditor(saved.id); toast(tr('flow.imported'));
  } catch (error) { toast(`${tr('flow.importFailed')}: ${error.message}`, true); }
  finally { const input = $('#flowImportFile'); if (input) input.value = ''; }
}

function flowTemplateGraph(key) {
  const zone = app.zones[0]?.id || '', device = app.devices[0]?.id || '', group = app.groups[0]?.id || '';
  const nodes = [], edges = [];
  const add = (kind, x, y, config = flowDefaultConfig(kind)) => { const node = { id: newFlowId('node'), kind, x, y, config: { ...config } }; nodes.push(node); return node; };
  const link = (a, b) => edges.push({ id: newFlowId('edge'), from: a.id, to: b.id });
  let titleKey = `flow.template.${key}.title`, descriptionKey = `flow.template.${key}.description`;
  if (key === 'workday_comfort') {
    const days=add('weekday',50,80), time=add('time_range',250,80,{start:'06:00',end:'08:30'}), action=add('zone_thermostat',500,80,{zone_id:zone,preset:'comfort',setpoint:21,mode:'auto',cooldown_seconds:60}); link(days,time); link(time,action);
  } else if (key === 'weather_comfort') {
    const days=add('weekday',40,50), time=add('time_range',40,170,{start:'06:00',end:'22:30'}), outside=add('outdoor_temperature',40,290,{operator:'lt',value:12}), and=add('logic_and',290,160), action=add('zone_thermostat',520,160,{zone_id:zone,preset:'comfort',setpoint:21,mode:'auto',cooldown_seconds:60}); link(days,and); link(time,and); link(outside,and); link(and,action);
  } else if (key === 'smart_demand') {
    const time=add('time_range',35,65,{start:'05:30',end:'23:00'}), outside=add('outdoor_temperature',35,185,{operator:'lt',value:10}), room=add('zone_temperature',35,305,{zone_id:zone,operator:'lt',value:20}), or=add('logic_or',280,245), mode=add('house_mode',280,80,{operator:'neq',value:'off'}), and=add('logic_and',500,165), action=add('zone_thermostat',735,165,{zone_id:zone,preset:'comfort',setpoint:21,mode:'auto',cooldown_seconds:90}); link(outside,or); link(room,or); link(time,and); link(mode,and); link(or,and); link(and,action);
  } else if (key === 'device_resilience') {
    const online=add('device_state',45,70,{device_id:device,field:'online',operator:'eq',value:'true'}), enabled=add('device_state',45,190,{device_id:device,field:'enabled',operator:'eq',value:'true'}), mode=add('house_mode',45,310,{operator:'neq',value:'off'}), and=add('logic_and',315,190), action=add('zone_thermostat',570,190,{zone_id:zone,preset:'auto',setpoint:21,mode:'auto',cooldown_seconds:60}); link(online,and); link(enabled,and); link(mode,and); link(and,action);
  } else if (key === 'night_group') {
    const time=add('time_range',60,120,{start:'22:30',end:'06:00'}), mode=add('house_mode',60,250,{operator:'neq',value:'off'}), and=add('logic_and',310,180), action=group ? add('group_action',560,180,{group_id:group,power:true,mode:'auto',preset:'sleep',cooldown_seconds:120}) : add('zone_thermostat',560,180,{zone_id:zone,preset:'sleep',setpoint:20,mode:'auto',cooldown_seconds:120}); link(time,and); link(mode,and); link(and,action);
  } else if (key === 'ha_window_guard') {
    const open=add('ha_state',45,120,{entity_id:'binary_sensor.window',operator:'eq',value:'on'}), mode=add('house_mode',45,250,{operator:'neq',value:'off'}), and=add('logic_and',300,180), action=add('zone_thermostat',555,180,{zone_id:zone,preset:'auto',setpoint:21,mode:'auto',power:false,cooldown_seconds:60}); link(open,and); link(mode,and); link(and,action);
  } else if (key === 'presence_eco') {
    const home=add('ha_state',45,80,{entity_id:'person.someone',operator:'eq',value:'home'}), away=add('ha_state',45,250,{entity_id:'person.someone',operator:'eq',value:'not_home'}), comfort=add('zone_thermostat',355,70,{zone_id:zone,preset:'comfort',setpoint:21,mode:'auto',cooldown_seconds:120}), eco=add('zone_thermostat',355,250,{zone_id:zone,preset:'away',setpoint:18,mode:'auto',cooldown_seconds:120}); link(home,comfort); link(away,eco);
  } else if (key === 'frost_guard') {
    const heat=add('house_mode',35,55,{operator:'eq',value:'heat'}), outside=add('outdoor_temperature',35,180,{operator:'lt',value:3}), room=add('zone_temperature',35,305,{zone_id:zone,operator:'lt',value:9}), and=add('logic_and',315,180), action=add('zone_thermostat',575,180,{zone_id:zone,preset:'custom',setpoint:12,mode:'heat',cooldown_seconds:300}); link(heat,and); link(outside,and); link(room,and); link(and,action);
  } else if (key === 'nested_guard') {
    const days=add('weekday',30,40), time=add('time_range',30,150,{start:'06:00',end:'22:30'}), outside=add('outdoor_temperature',30,270,{operator:'lt',value:8}), room=add('zone_temperature',30,390,{zone_id:zone,operator:'lt',value:20}), or=add('logic_or',285,330), available=add('ha_available',285,450,{entity_id:'binary_sensor.window'}), window=add('ha_state',285,560,{entity_id:'binary_sensor.window',operator:'eq',value:'on'}), not=add('logic_not',500,560), and=add('logic_and',520,245), action=add('zone_thermostat',780,245,{zone_id:zone,preset:'comfort',setpoint:21,mode:'auto',cooldown_seconds:90}); link(outside,or); link(room,or); link(window,not); link(days,and); link(time,and); link(or,and); link(available,and); link(not,and); link(and,action);
  } else if (key === 'night_quiet') {
    const night=add('night_mode',50,100), and=add('logic_and',315,165), action=group ? add('group_action',565,165,{group_id:group,power:null,mode:'auto',preset:'sleep',cooldown_seconds:180}) : add('zone_thermostat',565,165,{zone_id:zone,preset:'sleep',setpoint:20,mode:'auto',cooldown_seconds:180}); link(night,and); if (group) { const groupOn=add('group_state',50,235,{group_id:group,field:'power_enabled',operator:'eq',value:'true'}); link(groupOn,and); } link(and,action);
  }
  return { titleKey, descriptionKey, nodes, edges };
}

const FLOW_TEMPLATE_KEYS = ['workday_comfort','weather_comfort','smart_demand','device_resilience','night_group','ha_window_guard','presence_eco','frost_guard','nested_guard','night_quiet'];
function openFlowTemplates() {
  if (!app.flowDraft) return;
  const host = $('#flowTemplateList');
  host.innerHTML = FLOW_TEMPLATE_KEYS.map(key => `<button type="button" class="flow-template-card" data-flow-template="${esc(key)}"><strong>${esc(tr(`flow.template.${key}.title`))}</strong><span>${esc(tr(`flow.template.${key}.description`))}</span></button>`).join('');
  $('#flowTemplateDialog')?.showModal();
}
function applyFlowTemplate(key) {
  if (!app.flowDraft) return;
  if (app.flowDraft.nodes.length && !confirm(tr('flow.templateReplaceConfirm'))) return;
  const template = flowTemplateGraph(key); app.flowDraft.nodes = template.nodes; app.flowDraft.edges = template.edges;
  app.flowDraft.description = tr(template.descriptionKey); app.flowSelectedNodeId = null; app.flowDirty = true;
  if (!app.flowDraft.id || $('#flowName').value === tr('flow.newDefaultName')) $('#flowName').value = tr(template.titleKey);
  $('#flowTemplateDialog')?.close(); renderFlowEditor();
}

function localDateTimeInputValue(date = new Date()) {
  const pad = value => String(value).padStart(2, '0');
  return `${date.getFullYear()}-${pad(date.getMonth()+1)}-${pad(date.getDate())}T${pad(date.getHours())}:${pad(date.getMinutes())}`;
}
function flowSimulationOverrideNodes() {
  return (app.flowDraft?.nodes || []).filter(node => ['outdoor_temperature','device_temperature','zone_temperature','ha_state','ha_numeric','ha_attribute','ha_available','house_mode','device_state','zone_state','group_state','night_mode'].includes(node.kind));
}
function renderFlowSimulationOverrides() {
  const host = $('#flowSimulationOverrides'); if (!host) return;
  const nodes = flowSimulationOverrideNodes();
  host.innerHTML = nodes.length ? nodes.map(node => {
    const numeric = ['outdoor_temperature','device_temperature','zone_temperature','ha_numeric'].includes(node.kind);
    return `<label><span>${esc(flowNodeTitle(FLOW_NODE_META[node.kind]))} · ${esc(flowNodeSummary(node))}</span><input ${numeric ? 'type="number" step="0.1"' : 'type="text"'} data-flow-sim-node="${esc(node.id)}" placeholder="${esc(tr('flow.useLiveValue'))}"></label>`;
  }).join('') : `<p class="field-note">${esc(tr('flow.noSimulationOverrides'))}</p>`;
}
function collectFlowSimulationOverrides() {
  const result = {};
  $$('[data-flow-sim-node]', $('#flowSimulationOverrides')).forEach(input => {
    if (input.value.trim() === '') return;
    const node = flowNodeById(input.dataset.flowSimNode); let value = input.value.trim();
    if (node && ['outdoor_temperature','device_temperature','zone_temperature','ha_numeric'].includes(node.kind)) value = Number(value);
    else if (/^(true|false)$/i.test(value)) value = value.toLowerCase() === 'true';
    result[input.dataset.flowSimNode] = value;
  });
  return result;
}
function openFlowDryRun() {
  if (!app.flowDraft) return;
  $('#flowTestTitle').textContent = tr('flow.dryRun'); $('#flowSimulationControls').hidden = false; $('#flowTestResults').innerHTML = '';
  $('#flowSimulationAt').value = localDateTimeInputValue(); renderFlowSimulationOverrides(); $('#flowTestDialog')?.showModal();
}
function renderFlowDryRunResult(result) {
  const host = $('#flowTestResults');
  const actionName = id => flowNodeById(id) ? `${flowNodeTitle(FLOW_NODE_META[flowNodeById(id).kind])}: ${flowNodeSummary(flowNodeById(id))}` : id;
  host.innerHTML = `<div class="flow-test-summary"><strong>${esc(result.summary || tr('flow.dryRun'))}</strong><span>${esc(tr('flow.compiledPreview', result.compiled || { schedules:0, automations:0 }))}</span></div>${(result.actions || []).map(action => `<article class="flow-test-action ${action.would_execute ? 'pass' : 'blocked'}"><div><strong>${esc(actionName(action.node_id))}</strong><span class="badge ${action.would_execute ? 'active' : ''}">${esc(action.would_execute ? tr('flow.wouldExecute') : action.matched ? tr('flow.blockedByOwnership') : tr('flow.conditionFalse'))}</span></div>${action.blocked_reason ? `<p>${esc(tr('flow.blockReason'))}: <code>${esc(action.blocked_reason)}</code></p>` : ''}<div class="flow-trace">${(action.trace || []).map(item => `<div><span>${item.matched ? '✓' : '×'} ${esc(flowNodeTitle(FLOW_NODE_META[item.kind] || { title:item.kind }))}</span><code>${esc(JSON.stringify(item.actual))}</code></div>`).join('')}</div></article>`).join('')}`;
}
async function runFlowDryRun() {
  if (!app.flowDraft) return;
  const input = $('#flowSimulationAt').value; const at = input ? new Date(input).toISOString() : new Date().toISOString();
  $('#flowTestResults').innerHTML = `<p class="field-note">${esc(tr('flow.runningSimulation'))}</p>`;
  try {
    const result = await api('/api/flows/simulate', { method:'POST', body:{ flow:flowSourcePayload(), flow_id:app.flowDraft.id || null, at, overrides:collectFlowSimulationOverrides(), log:true } });
    renderFlowDryRunResult(result);
  } catch (error) { $('#flowTestResults').innerHTML = `<div class="empty compact"><strong>${esc(tr('flow.simulationFailed'))}</strong><span>${esc(error.message)}</span></div>`; }
}
async function openFlowLogs() {
  if (!app.flowDraft?.id) return toast(tr('flow.saveBeforeLogs'), true);
  $('#flowTestTitle').textContent = tr('flow.logs'); $('#flowSimulationControls').hidden = true; $('#flowTestResults').innerHTML = `<p class="field-note">${esc(tr('common.loading'))}</p>`; $('#flowTestDialog')?.showModal();
  try {
    const result = await api(`/api/flows/${encodeURIComponent(app.flowDraft.id)}/logs?limit=150`);
    const events = result.events || [];
    $('#flowTestResults').innerHTML = events.length ? events.map(event => `<article class="flow-log-row"><div><strong>${esc(event.kind)}</strong><span class="badge">${esc(event.level)}</span></div><p>${esc(event.message)}</p><small>${esc(new Date(event.timestamp).toLocaleString())}</small></article>`).join('') : `<div class="empty compact"><strong>${esc(tr('flow.noLogs'))}</strong></div>`;
  } catch (error) { $('#flowTestResults').innerHTML = `<div class="empty compact"><strong>${esc(tr('flow.logsFailed'))}</strong><span>${esc(error.message)}</span></div>`; }
}

async function saveFlow() {
  if (!app.flowDraft) return;
  const name = $('#flowName').value.trim(); if (!name) return toast(tr('flow.nameRequired'), true);
  const body = { name, enabled: $('#flowEnabled').checked, description: app.flowDraft.description || '', nodes: app.flowDraft.nodes, edges: app.flowDraft.edges };
  if (app.flowDraft.id) body.expected_revision = Number(app.flowDraft.revision || 0);
  try {
    const saved = await api(app.flowDraft.id ? `/api/flows/${encodeURIComponent(app.flowDraft.id)}` : '/api/flows', { method: app.flowDraft.id ? 'PUT' : 'POST', body });
    const index = app.flows.findIndex(flow => flow.id === saved.id); if (index >= 0) app.flows[index] = saved; else app.flows.push(saved);
    app.flowDraft = flowDraftFrom(saved); app.flowDirty = false; renderFlows(); renderFlowEditor(); updateBrowserUrl(`/flows/${saved.id}`, true); await loadBootstrap(); toast(tr('flow.saved'));
  } catch (error) { toast(error.message, true); }
}

async function deleteFlow(id) {
  const flow = app.flows.find(item => item.id === id); if (!flow) return;
  if (!confirm(tr('flow.deleteConfirm', { name: flow.name }))) return;
  try { await api(`/api/flows/${encodeURIComponent(id)}`, { method: 'DELETE' }); app.flows = app.flows.filter(item => item.id !== id); renderFlows(); await loadBootstrap(); toast(tr('flow.deleted')); } catch (error) { toast(error.message, true); }
}

function updateFlowConfig(input) {
  const node = flowNodeById(app.flowSelectedNodeId); if (!node) return;
  const key = input.dataset.flowConfig; if (!key) return;
  if (key === 'days') node.config.days = $$('[data-flow-config="days"]', $('#flowInspector')).filter(el => el.checked).map(el => Number(el.value));
  else if (['power','swing_vertical','swing_horizontal','quiet','turbo','light','air','xfan','health','sleep'].includes(key)) node.config[key] = input.value === '' ? null : input.value === 'true';
  else if (key === 'value' && node.kind === 'constant') node.config[key] = input.value === 'true';
  else if (['value','setpoint','target_temperature','cooldown_seconds','fan_speed'].includes(key) && ['outdoor_temperature','device_temperature','zone_temperature','ha_numeric','zone_thermostat','device_action','group_action'].includes(node.kind)) node.config[key] = input.value === '' ? null : Number(input.value);
  else node.config[key] = input.value;
  app.flowDirty = true; renderFlowEditor();
}

let flowDrag = null;
document.addEventListener('pointerdown', event => {
  const nodeEl = event.target.closest?.('[data-flow-node]');
  if (!nodeEl || event.target.closest('button,input,select,label')) return;
  const node = flowNodeById(nodeEl.dataset.flowNode); if (!node) return;
  app.flowSelectedNodeId = node.id; renderFlowInspector();
  flowDrag = { id: node.id, x: event.clientX, y: event.clientY, left: Number(node.x || 0), top: Number(node.y || 0) };
  nodeEl.setPointerCapture?.(event.pointerId); event.preventDefault();
});
document.addEventListener('pointermove', event => {
  if (!flowDrag || !app.flowDraft) return;
  const node = flowNodeById(flowDrag.id); if (!node) return;
  node.x = Math.max(12, flowDrag.left + event.clientX - flowDrag.x); node.y = Math.max(12, flowDrag.top + event.clientY - flowDrag.y); app.flowDirty = true;
  const el = $(`[data-flow-node="${CSS.escape(node.id)}"]`); if (el) { el.style.left = `${node.x}px`; el.style.top = `${node.y}px`; renderFlowEdges(); }
});
document.addEventListener('pointerup', () => { flowDrag = null; });

document.addEventListener('click', event => {
  const edge = event.target.closest?.('[data-flow-edge]'); if (edge) { removeFlowEdge(edge.dataset.flowEdge); return; }
  const add = event.target.closest?.('[data-flow-add]'); if (add) { addFlowNode(add.dataset.flowAdd); return; }
  const template = event.target.closest?.('[data-flow-template]'); if (template) { applyFlowTemplate(template.dataset.flowTemplate); return; }
  const remove = event.target.closest?.('[data-flow-remove]'); if (remove) { removeFlowNode(remove.dataset.flowRemove); return; }
  const output = event.target.closest?.('[data-flow-output]'); if (output) { app.flowConnectFrom = output.dataset.flowOutput; renderFlowEditor(); return; }
  const input = event.target.closest?.('[data-flow-input]'); if (input) { if (app.flowConnectFrom) connectFlowNodes(app.flowConnectFrom, input.dataset.flowInput); return; }
  const node = event.target.closest?.('[data-flow-node]'); if (node) { app.flowSelectedNodeId = node.dataset.flowNode; renderFlowEditor(); return; }
  const action = event.target.closest?.('[data-action]')?.dataset.action;
  if (action === 'new-flow') openFlowEditor();
  else if (action === 'edit-flow') openFlowEditor(event.target.closest('[data-action]').dataset.id);
  else if (action === 'delete-flow') deleteFlow(event.target.closest('[data-action]').dataset.id);
  else if (action === 'save-flow') saveFlow();
  else if (action === 'import-flow') $('#flowImportFile')?.click();
  else if (action === 'export-flow') exportFlow();
  else if (action === 'flow-templates') openFlowTemplates();
  else if (action === 'flow-dry-run') openFlowDryRun();
  else if (action === 'run-flow-dry-run') runFlowDryRun();
  else if (action === 'flow-logs') openFlowLogs();
  else if (action === 'close-flow-editor') closeFlowEditor();
});
document.addEventListener('change', event => { if (event.target.matches?.('[data-flow-config]')) updateFlowConfig(event.target); });
$('#flowImportFile')?.addEventListener('change', event => importFlowFile(event.target.files?.[0]));
$('#flowName')?.addEventListener('input', () => { if (app.flowDraft) app.flowDirty = true; });
$('#flowEnabled')?.addEventListener('change', () => { if (app.flowDraft) app.flowDirty = true; });
window.addEventListener('resize', () => { if (!$('#flowEditor')?.hidden) renderFlowEdges(); });