/**
 * Ticket Bulk Creation View
 * Tabular layout for creating multiple tickets.
 */
const TicketBulkView = {
  rowCount: 0,
  activeRequests: false,
  savedRows: null,
  rowAttachments: {},

  async render() {
    const container = document.getElementById('view-container');
    container.innerHTML = '<div class="loading-screen"><div class="spinner"></div><p>Caricamento dati...</p></div>';

    try {
      await App.ensureLookups();

      // Check if we have incoming query parameters (e.g. from Teams integration)
      const hashParts = window.location.hash.split('?');
      const searchStr = hashParts.length > 1 ? hashParts[1] : window.location.search;
      const urlParams = new URLSearchParams(searchStr);
      const incomingBody = urlParams.get('body');
      const incomingCustomer = urlParams.get('customer');
      const incomingSubject = urlParams.get('subject');

      if (incomingBody || incomingCustomer || incomingSubject) {
        let foundCustomer = null;
        if (incomingCustomer) {
          try {
            const results = await App.api(`/api/customer-users/search?q=${encodeURIComponent(incomingCustomer)}`);
            if (results && results.length > 0) {
              foundCustomer = results[0];
            }
          } catch (e) {
            console.warn('Failed to search customer for Teams integration:', e);
          }
        }

        const initialRowData = {
          state_id: '1',
          title: 'Segnalazione da Teams',
          queue_name: App.lookups.queues && App.lookups.queues.length > 0 ? App.lookups.queues[0].name : '',
          queue_id: App.lookups.queues && App.lookups.queues.length > 0 ? App.lookups.queues[0].id : '',
          type_id: '',
          owner_name: '',
          owner_id: '',
          responsible_name: '',
          responsible_id: '',
          customer_search: foundCustomer ? `${foundCustomer.first_name} ${foundCustomer.last_name}` : (incomingCustomer || ''),
          customer_id: foundCustomer ? foundCustomer.customer_id : '',
          customer_user_id: foundCustomer ? foundCustomer.login : (incomingCustomer || ''),
          subject: incomingSubject || 'Messaggio da Microsoft Teams',
          body: incomingBody || '',
          priority_id: '3',
          company_display: foundCustomer ? foundCustomer.customer_id : '',
          isExpanded: true,
          statusDotClass: '',
          statusDotTitle: ''
        };

        if (!this.savedRows) this.savedRows = [];
        this.savedRows.unshift(initialRowData);

        // Clean query parameters from URL to prevent duplicate inserts on reload
        window.history.replaceState({}, document.title, window.location.pathname + window.location.hash.split('?')[0]);
      }

      this.rowCount = 0;

      container.innerHTML = `
        <div class="card" style="padding: var(--space-md); overflow: visible;">
          <div class="card-title" style="display:flex; justify-content:space-between; align-items:center; margin-bottom:var(--space-md);">
            <span>Apertura Massiva Ticket</span>
            <span style="font-size:0.75rem; color:var(--text-tertiary); font-weight:normal; text-transform:none;">
              Usa il tasto <kbd style="background:rgba(255,255,255,0.1); padding:2px 6px; border-radius:3px;">Tab</kbd> per spostarti e creare nuove righe in automatico.
            </span>
          </div>

          <div class="bulk-grid-wrapper">
            <table class="bulk-grid-table">
              <thead>
                <tr>
                  <th style="width:40px; text-align:center;">#</th>
                  <th style="width:120px;">Stato *</th>
                  <th style="width:200px;">Titolo *</th>
                  <th style="width:540px;">Coda *</th>
                  <th style="width:110px;">Tipo</th>
                  <th style="width:260px;">Owner</th>
                  <th style="width:260px;">Responsabile</th>
                  <th style="width:300px;">Cliente *</th>
                  <th style="width:200px;">Oggetto</th>
                  <th style="width:200px;">Messaggio</th>
                  <th style="width:90px; text-align:center;">Azioni</th>
                </tr>
              </thead>
              <tbody id="bulk-rows-container">
                <!-- Rows will be added dynamically here -->
              </tbody>
            </table>
          </div>

          <div class="bulk-actions-container">
            <div>
              <button class="btn btn-ghost btn-sm" id="bulk-add-row-btn">
                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:16px;height:16px;">
                  <path d="M12 5v14M5 12h14"/>
                </svg>
                Aggiungi riga
              </button>
            </div>
            <div style="display:flex; gap:var(--space-md); align-items:center;">
              <button class="btn btn-ghost btn-sm" onclick="window.location.hash='#/tickets'">Annulla</button>
              <button class="btn btn-primary" id="bulk-submit-btn">
                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:18px;height:18px;">
                  <path d="M5 12l5 5L20 7"/>
                </svg>
                Conferma e Invia
              </button>
            </div>
          </div>
        </div>
      `;

      // Add event listeners
      document.getElementById('bulk-add-row-btn').addEventListener('click', () => this.addRow());
      document.getElementById('bulk-submit-btn').addEventListener('click', () => this.submitBulk());

      // Add first row or restore saved rows
      if (this.savedRows && this.savedRows.length > 0) {
        this.savedRows.forEach(rowData => this.addRow(rowData));
      } else {
        this.addRow();
      }

    } catch (err) {
      console.error('Error rendering bulk view:', err);
      container.innerHTML = `<div class="error-screen"><p>Errore caricamento: ${err.message}</p></div>`;
    }
  },

  addRow(savedData = null) {
    this.rowCount++;
    const id = this.rowCount;
    const container = document.getElementById('bulk-rows-container');

    const tr = document.createElement('tr');
    tr.id = `bulk-row-${id}`;
    tr.className = 'bulk-row';
    tr.innerHTML = `
      <td style="text-align:center; font-weight:600; color:var(--text-tertiary);">
        <span class="row-status-dot" id="status-dot-${id}"></span><span class="row-num">${id}</span>
      </td>
      <td>
        <select class="bulk-select" id="bulk-state-${id}">
          ${(App.lookups.states || []).map(s => {
      const sel = s.type_name === 'new' ? 'selected' : '';
      return `<option value="${s.id}" ${sel}>${s.name}</option>`;
    }).join('')}
        </select>
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-title-${id}" placeholder="Titolo ticket" autocomplete="new-password" required />
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-queue-search-${id}" placeholder="Coda..." autocomplete="new-password" />
        <input type="hidden" id="bulk-queue-${id}" />
        <div id="bulk-queue-suggestions-${id}" class="bulk-suggestions" style="display:none;"></div>
      </td>
      <td>
        <select class="bulk-select" id="bulk-type-${id}">
          <option value="">—</option>
          ${(App.lookups.types || []).map(t => `<option value="${t.id}">${t.name}</option>`).join('')}
        </select>
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-owner-search-${id}" placeholder="Cerca owner..." autocomplete="new-password" />
        <input type="hidden" id="bulk-owner-${id}" />
        <div id="bulk-owner-suggestions-${id}" class="bulk-suggestions" style="display:none;"></div>
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-responsible-search-${id}" placeholder="Cerca responsabile..." autocomplete="new-password" />
        <input type="hidden" id="bulk-responsible-${id}" />
        <div id="bulk-responsible-suggestions-${id}" class="bulk-suggestions" style="display:none;"></div>
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-customer-search-${id}" placeholder="Nome, email, login..." autocomplete="new-password" required />
        <input type="hidden" id="bulk-customer-${id}" />
        <input type="hidden" id="bulk-customer-user-id-${id}" />
        <div id="bulk-customer-suggestions-${id}" class="bulk-suggestions" style="display:none;"></div>
      </td>
      <td>
        <input type="text" class="bulk-input" id="bulk-subject-${id}" placeholder="Oggetto nota" autocomplete="new-password" />
      </td>
      <td>
        <div class="bulk-textarea-container">
          <textarea class="bulk-textarea" id="bulk-body-${id}" placeholder="Scrivi nota..."></textarea>
        </div>
      </td>
      <td style="text-align:center;">
        <div class="row-actions">
          <button type="button" class="btn btn-ghost btn-xs" id="bulk-attach-btn-${id}" title="Allega file" style="position:relative; display:inline-flex; align-items:center; gap:2px; height:24px; padding:0 6px;">
            📎 <span class="badge-attachments-count" id="bulk-attach-badge-${id}" style="display:none; font-size:10px;">0</span>
          </button>
          <input type="file" id="bulk-file-input-${id}" multiple style="display:none;" />
          <button class="btn btn-ghost btn-xs" id="bulk-expand-btn-${id}" title="Opzioni avanzate">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:14px;height:14px;">
              <path d="M12 5v14M5 12h14"/>
            </svg>
          </button>
          <button class="btn btn-danger btn-xs" id="bulk-delete-btn-${id}" title="Rimuovi riga">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:14px;height:14px;">
              <path d="M3 6h18M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/>
            </svg>
          </button>
        </div>
      </td>
    `;

    // Collapsible advanced row
    const trExp = document.createElement('tr');
    trExp.id = `bulk-row-expanded-${id}`;
    trExp.className = 'bulk-row-expanded';
    trExp.style.display = 'none';
    trExp.innerHTML = `
      <td colspan="11">
        <div class="bulk-row-expanded-content">
          <div class="form-group" style="margin-bottom:0;">
            <label class="form-label" style="font-size:0.75rem;">Priorità</label>
            <select class="form-select" id="bulk-priority-${id}" style="height:32px; font-size:0.8rem; padding: 4px 8px; margin:0;">
              ${(App.lookups.priorities || []).map(p => {
      const sel = p.id === 3 ? 'selected' : '';
      return `<option value="${p.id}" ${sel}>${p.name}</option>`;
    }).join('')}
            </select>
          </div>
          <div class="form-group" style="margin-bottom:0;">
            <label class="form-label" style="font-size:0.75rem;">Azienda Cliente (Società)</label>
            <input type="text" class="form-input" id="bulk-company-display-${id}" readonly disabled placeholder="Rilevata dal cliente" style="height:32px; font-size:0.8rem; background:rgba(255,255,255,0.05); margin:0;" />
          </div>
        </div>
      </td>
    `;

    container.appendChild(tr);
    container.appendChild(trExp);

    // Initialize attachments for this row
    this.rowAttachments[id] = savedData ? (savedData.attachments || []) : [];

    // Bind attachment click and input change
    const attachBtn = tr.querySelector(`#bulk-attach-btn-${id}`);
    const fileInput = tr.querySelector(`#bulk-file-input-${id}`);
    const attachBadge = tr.querySelector(`#bulk-attach-badge-${id}`);

    const updateBadge = () => {
      const count = (this.rowAttachments[id] || []).length;
      if (attachBadge) {
        attachBadge.textContent = count;
        attachBadge.style.display = count > 0 ? 'inline-block' : 'none';
      }
    };

    if (attachBtn && fileInput) {
      attachBtn.addEventListener('click', () => fileInput.click());

      fileInput.addEventListener('change', (e) => {
        const files = Array.from(e.target.files);
        for (const file of files) {
          const reader = new FileReader();
          reader.onload = () => {
            const base64Data = reader.result.split(',')[1];
            if (!this.rowAttachments[id]) {
              this.rowAttachments[id] = [];
            }
            this.rowAttachments[id].push({
              filename: file.name,
              content: base64Data,
              content_type: file.type
            });
            updateBadge();
            this.saveState();
          };
          reader.readAsDataURL(file);
        }
        fileInput.value = '';
      });
    }

    // Populate with savedData if available, otherwise set default values
    if (savedData) {
      tr.querySelector(`#bulk-state-${id}`).value = savedData.state_id;
      tr.querySelector(`#bulk-title-${id}`).value = savedData.title;
      tr.querySelector(`#bulk-queue-search-${id}`).value = savedData.queue_name;
      tr.querySelector(`#bulk-queue-${id}`).value = savedData.queue_id;
      tr.querySelector(`#bulk-type-${id}`).value = savedData.type_id;
      tr.querySelector(`#bulk-owner-search-${id}`).value = savedData.owner_name;
      tr.querySelector(`#bulk-owner-${id}`).value = savedData.owner_id;
      tr.querySelector(`#bulk-responsible-search-${id}`).value = savedData.responsible_name;
      tr.querySelector(`#bulk-responsible-${id}`).value = savedData.responsible_id;
      tr.querySelector(`#bulk-customer-search-${id}`).value = savedData.customer_search;
      tr.querySelector(`#bulk-customer-${id}`).value = savedData.customer_id;
      tr.querySelector(`#bulk-customer-user-id-${id}`).value = savedData.customer_user_id;
      tr.querySelector(`#bulk-subject-${id}`).value = savedData.subject;
      tr.querySelector(`#bulk-body-${id}`).value = savedData.body;
      trExp.querySelector(`#bulk-priority-${id}`).value = savedData.priority_id;
      trExp.querySelector(`#bulk-company-display-${id}`).value = savedData.company_display;

      if (savedData.isExpanded) {
        trExp.style.display = 'table-row';
        const btn = tr.querySelector(`#bulk-expand-btn-${id}`);
        btn.innerHTML = `<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:14px;height:14px;"><path d="M5 12h14"/></svg>`;
      }

      const dot = tr.querySelector(`#status-dot-${id}`);
      if (savedData.statusDotClass) dot.className = savedData.statusDotClass;
      if (savedData.statusDotTitle) dot.title = savedData.statusDotTitle;

    } else {
      // Default queue pre-population
      const defaultQueueInput = tr.querySelector(`#bulk-queue-search-${id}`);
      const defaultQueueHidden = tr.querySelector(`#bulk-queue-${id}`);
      if (App.lookups.queues && App.lookups.queues.length > 0) {
        defaultQueueInput.value = App.lookups.queues[0].name;
        defaultQueueHidden.value = App.lookups.queues[0].id;
      }

      // Default owner and responsible (Active Agent)
      const activeAgentId = localStorage.getItem('activeAgentId') || '1';
      const activeAgent = (App.lookups.users || []).find(u => String(u.id) === String(activeAgentId));
      if (activeAgent) {
        const agentName = `${activeAgent.first_name} ${activeAgent.last_name}`;
        tr.querySelector(`#bulk-owner-search-${id}`).value = agentName;
        tr.querySelector(`#bulk-owner-${id}`).value = activeAgent.id;
        tr.querySelector(`#bulk-responsible-search-${id}`).value = agentName;
        tr.querySelector(`#bulk-responsible-${id}`).value = activeAgent.id;
      }
    }

    // Toggle expand button
    tr.querySelector(`#bulk-expand-btn-${id}`).addEventListener('click', (e) => {
      e.preventDefault();
      const isHidden = trExp.style.display === 'none';
      trExp.style.display = isHidden ? 'table-row' : 'none';
      const btn = tr.querySelector(`#bulk-expand-btn-${id}`);
      btn.innerHTML = isHidden
        ? `<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:14px;height:14px;"><path d="M5 12h14"/></svg>`
        : `<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="width:14px;height:14px;"><path d="M12 5v14M5 12h14"/></svg>`;
      this.saveState();
    });

    // Delete button
    tr.querySelector(`#bulk-delete-btn-${id}`).addEventListener('click', (e) => {
      e.preventDefault();
      tr.remove();
      trExp.remove();
      this.reorderRows();
      this.saveState();
    });

    // Setup autocompletes
    this.setupAutocomplete(id, 'queue', `bulk-queue-search-${id}`, `bulk-queue-${id}`, `bulk-queue-suggestions-${id}`);
    this.setupAutocomplete(id, 'owner', `bulk-owner-search-${id}`, `bulk-owner-${id}`, `bulk-owner-suggestions-${id}`);
    this.setupAutocomplete(id, 'responsible', `bulk-responsible-search-${id}`, `bulk-responsible-${id}`, `bulk-responsible-suggestions-${id}`);
    this.setupAutocomplete(id, 'customer', `bulk-customer-search-${id}`, `bulk-customer-${id}`, `bulk-customer-suggestions-${id}`);

    // Setup Tab key navigation on the last field (body textarea)
    const textarea = tr.querySelector(`#bulk-body-${id}`);
    textarea.addEventListener('keydown', (e) => {
      if (e.key === 'Tab' && !e.shiftKey) {
        // Check if this is the last visible bulk-row textarea
        const activeRows = container.querySelectorAll('.bulk-row');
        const lastRow = activeRows[activeRows.length - 1];
        if (tr === lastRow) {
          e.preventDefault();
          this.addRow();
          // Focus the next row's first input (Title)
          setTimeout(() => {
            const nextId = this.rowCount;
            document.getElementById(`bulk-title-${nextId}`)?.focus();
          }, 50);
        }
      }
    });

    // Scroll table to make inputs and textareas fully visible when focused
    tr.querySelectorAll('input, select, textarea').forEach(input => {
      input.addEventListener('focus', () => {
        const wrapper = document.querySelector('.bulk-grid-wrapper');
        if (wrapper) {
          setTimeout(() => {
            const rect = input.getBoundingClientRect();
            const wrapperRect = wrapper.getBoundingClientRect();
            if (rect.right > wrapperRect.right) {
              wrapper.scrollBy({ left: rect.right - wrapperRect.right + 40, behavior: 'smooth' });
            } else if (rect.left < wrapperRect.left) {
              wrapper.scrollBy({ left: rect.left - wrapperRect.left - 40, behavior: 'smooth' });
            }
            if (rect.bottom > wrapperRect.bottom) {
              wrapper.scrollBy({ top: rect.bottom - wrapperRect.bottom + 40, behavior: 'smooth' });
            } else if (rect.top < wrapperRect.top) {
              wrapper.scrollBy({ top: rect.top - wrapperRect.top - 40, behavior: 'smooth' });
            }
          }, 150);
        }
      });
    });

    // Save state on any input change
    tr.querySelectorAll('input, select, textarea').forEach(input => {
      input.addEventListener('input', () => this.saveState());
      input.addEventListener('change', () => this.saveState());
    });
    trExp.querySelectorAll('input, select, textarea').forEach(input => {
      input.addEventListener('input', () => this.saveState());
      input.addEventListener('change', () => this.saveState());
    });

    updateBadge();
    this.saveState();
  },

  reorderRows() {
    const container = document.getElementById('bulk-rows-container');
    const rows = container.querySelectorAll('.bulk-row');
    rows.forEach((row, index) => {
      const numSpan = row.querySelector('.row-num');
      if (numSpan) numSpan.textContent = index + 1;
    });
  },

  saveState() {
    const container = document.getElementById('bulk-rows-container');
    if (!container) return;
    const rows = container.querySelectorAll('.bulk-row');
    const data = [];
    rows.forEach(row => {
      const id = row.id.replace('bulk-row-', '');

      const state_id = document.getElementById(`bulk-state-${id}`).value;
      const title = document.getElementById(`bulk-title-${id}`).value;
      const queue_name = document.getElementById(`bulk-queue-search-${id}`).value;
      const queue_id = document.getElementById(`bulk-queue-${id}`).value;
      const type_id = document.getElementById(`bulk-type-${id}`).value;
      const owner_name = document.getElementById(`bulk-owner-search-${id}`).value;
      const owner_id = document.getElementById(`bulk-owner-${id}`).value;
      const responsible_name = document.getElementById(`bulk-responsible-search-${id}`).value;
      const responsible_id = document.getElementById(`bulk-responsible-${id}`).value;
      const customer_search = document.getElementById(`bulk-customer-search-${id}`).value;
      const customer_id = document.getElementById(`bulk-customer-${id}`).value;
      const customer_user_id = document.getElementById(`bulk-customer-user-id-${id}`).value;
      const subject = document.getElementById(`bulk-subject-${id}`).value;
      const body = document.getElementById(`bulk-body-${id}`).value;

      const priority_id = document.getElementById(`bulk-priority-${id}`).value;
      const company_display = document.getElementById(`bulk-company-display-${id}`).value;

      const trExp = document.getElementById(`bulk-row-expanded-${id}`);
      const isExpanded = trExp ? trExp.style.display !== 'none' : false;
      const statusDot = document.getElementById(`status-dot-${id}`);
      const statusDotClass = statusDot ? statusDot.className : '';
      const statusDotTitle = statusDot ? statusDot.title : '';

      data.push({
        state_id,
        title,
        queue_name,
        queue_id,
        type_id,
        owner_name,
        owner_id,
        responsible_name,
        responsible_id,
        customer_search,
        customer_id,
        customer_user_id,
        subject,
        body,
        priority_id,
        company_display,
        isExpanded,
        statusDotClass,
        statusDotTitle,
        attachments: this.rowAttachments[id] || []
      });
    });
    this.savedRows = data;
  },

  setupAutocomplete(rowId, type, searchInputId, hiddenInputId, suggestionsDivId) {
    const input = document.getElementById(searchInputId);
    const hidden = document.getElementById(hiddenInputId);
    const suggestions = document.getElementById(suggestionsDivId);
    if (!input || !suggestions) return;

    let debounce;

    const adjustSuggestionsScroll = () => {
      setTimeout(() => {
        const wrapper = document.querySelector('.bulk-grid-wrapper');
        if (wrapper) {
          const rect = suggestions.getBoundingClientRect();
          const wrapperRect = wrapper.getBoundingClientRect();
          if (rect.right > wrapperRect.right) {
            wrapper.scrollBy({ left: rect.right - wrapperRect.right + 40, behavior: 'smooth' });
          } else if (rect.left < wrapperRect.left) {
            wrapper.scrollBy({ left: rect.left - wrapperRect.left - 40, behavior: 'smooth' });
          }
          if (rect.bottom > wrapperRect.bottom) {
            wrapper.scrollBy({ top: rect.bottom - wrapperRect.bottom + 40, behavior: 'smooth' });
          } else if (rect.top < wrapperRect.top) {
            wrapper.scrollBy({ top: rect.top - wrapperRect.top - 40, behavior: 'smooth' });
          }
        }
      }, 50);
    };

    const renderResults = (results) => {
      if (results.length === 0) {
        suggestions.innerHTML = '<div class="bulk-suggestions-item" style="color:var(--text-muted); cursor:default;">Nessun risultato</div>';
        suggestions.style.display = 'block';
        adjustSuggestionsScroll();
        return;
      }

      suggestions.innerHTML = results.map(r => {
        if (type === 'queue') {
          return `<div class="bulk-suggestions-item" data-id="${r.id}" data-name="${App.escapeHtml(r.name)}">${App.escapeHtml(r.name)}</div>`;
        } else if (type === 'owner' || type === 'responsible') {
          return `<div class="bulk-suggestions-item" data-id="${r.id}" data-name="${App.escapeHtml(r.first_name + ' ' + r.last_name)}"><strong>${App.escapeHtml(r.first_name)} ${App.escapeHtml(r.last_name)}</strong> <span style="font-size:0.75rem; color:var(--text-muted);">(${r.login})</span></div>`;
        } else if (type === 'customer') {
          return `<div class="bulk-suggestions-item" data-login="${App.escapeHtml(r.login)}" data-customer-id="${App.escapeHtml(r.customer_id || '')}" data-name="${App.escapeHtml(r.first_name + ' ' + r.last_name)}"><strong>${App.escapeHtml(r.first_name)} ${App.escapeHtml(r.last_name)}</strong> <span style="font-size:0.75rem; color:var(--text-muted);">(${r.login} | ${r.customer_id || '—'})</span></div>`;
        }
      }).join('');
      suggestions.style.display = 'block';
      adjustSuggestionsScroll();

      // Bind clicks
      suggestions.querySelectorAll('.bulk-suggestions-item').forEach(item => {
        item.addEventListener('click', () => {
          if (type === 'queue' || type === 'owner' || type === 'responsible') {
            input.value = item.dataset.name;
            hidden.value = item.dataset.id;
          } else if (type === 'customer') {
            input.value = item.dataset.name;
            hidden.value = item.dataset.customerId || '';
            document.getElementById(`bulk-customer-user-id-${rowId}`).value = item.dataset.login;
            document.getElementById(`bulk-company-display-${rowId}`).value = item.dataset.customerId || '';
          }
          suggestions.style.display = 'none';
        });
      });
    };

    const showAllLocalOrQuery = async () => {
      if (type === 'queue') {
        renderResults(App.lookups.queues || []);
      } else if (type === 'owner' || type === 'responsible') {
        renderResults(App.lookups.users || []);
      } else if (type === 'customer') {
        try {
          const results = await App.api(`/api/customer-users/search?q=`);
          renderResults(results);
        } catch (err) {
          console.error(err);
        }
      }
    };

    input.addEventListener('input', () => {
      clearTimeout(debounce);
      const q = input.value.trim();

      // Clear hidden values if user deletes text
      if (q.length === 0) {
        hidden.value = '';
        if (type === 'customer') {
          document.getElementById(`bulk-customer-user-id-${rowId}`).value = '';
          document.getElementById(`bulk-company-display-${rowId}`).value = '';
        }
        showAllLocalOrQuery();
        return;
      }

      if (type !== 'queue' && type !== 'owner' && type !== 'responsible' && type !== 'customer' && q.length < 2) {
        suggestions.style.display = 'none';
        return;
      }

      // Local filtering for fast performance on loaded lookups
      if (type === 'queue' || type === 'owner' || type === 'responsible') {
        const lowerQ = q.toLowerCase();
        let filtered = [];
        if (type === 'queue') {
          filtered = (App.lookups.queues || []).filter(r => r.name.toLowerCase().includes(lowerQ));
        } else {
          filtered = (App.lookups.users || []).filter(r =>
            r.first_name.toLowerCase().includes(lowerQ) ||
            r.last_name.toLowerCase().includes(lowerQ) ||
            r.login.toLowerCase().includes(lowerQ)
          );
        }
        renderResults(filtered);
        return;
      }

      // API search for customer users
      debounce = setTimeout(async () => {
        try {
          const results = await App.api(`/api/customer-users/search?q=${encodeURIComponent(q)}`);
          renderResults(results);
        } catch (err) {
          console.error(err);
        }
      }, 250);
    });

    // Close suggestions clicking outside
    document.addEventListener('click', (e) => {
      if (e.target !== input && e.target !== suggestions) {
        suggestions.style.display = 'none';
      }
    });

    // Close suggestions on blur (tab navigation out of input)
    input.addEventListener('blur', () => {
      setTimeout(() => {
        suggestions.style.display = 'none';
      }, 200);
    });

    // Empty input and show list on focus/click
    input.addEventListener('focus', () => {
      if (type === 'queue' || type === 'owner' || type === 'responsible' || type === 'customer') {
        input.value = '';
        hidden.value = '';
        if (type === 'customer') {
          document.getElementById(`bulk-customer-user-id-${rowId}`).value = '';
          document.getElementById(`bulk-company-display-${rowId}`).value = '';
        }
        showAllLocalOrQuery();
      }
    });
  },

  async submitBulk() {
    if (this.activeRequests) return;

    const container = document.getElementById('bulk-rows-container');
    const rows = container.querySelectorAll('.bulk-row');
    if (rows.length === 0) {
      Toast.warning('Nessun ticket da creare');
      return;
    }

    // Validation pass
    const ticketsToSend = [];
    let hasValidationError = false;

    rows.forEach(row => {
      const id = row.id.replace('bulk-row-', '');
      const state_id = document.getElementById(`bulk-state-${id}`).value;
      const title = document.getElementById(`bulk-title-${id}`).value.trim();
      const queue_id = document.getElementById(`bulk-queue-${id}`).value;
      const queue_name = document.getElementById(`bulk-queue-search-${id}`).value;
      const type_id = document.getElementById(`bulk-type-${id}`).value;
      const ownerId = document.getElementById(`bulk-owner-${id}`).value;
      const responsibleId = document.getElementById(`bulk-responsible-${id}`).value;
      const customerId = document.getElementById(`bulk-customer-${id}`).value;
      const customerUserId = document.getElementById(`bulk-customer-user-id-${id}`).value;
      const customerSearch = document.getElementById(`bulk-customer-search-${id}`).value;
      const subject = document.getElementById(`bulk-subject-${id}`).value.trim();
      const body = document.getElementById(`bulk-body-${id}`).value.trim();
      const priority_id = document.getElementById(`bulk-priority-${id}`).value;

      // Reset status indicators
      const dot = document.getElementById(`status-dot-${id}`);
      dot.className = 'row-status-dot';

      if (!title) {
        Toast.warning(`Titolo obbligatorio alla riga ${id}`);
        document.getElementById(`bulk-title-${id}`).focus();
        hasValidationError = true;
        return;
      }
      if (!queue_id) {
        Toast.warning(`Seleziona una coda valida alla riga ${id}`);
        document.getElementById(`bulk-queue-search-${id}`).focus();
        hasValidationError = true;
        return;
      }
      if (!customerUserId && !customerId) {
        Toast.warning(`Seleziona un Utente Cliente valido alla riga ${id}`);
        document.getElementById(`bulk-customer-search-${id}`).focus();
        hasValidationError = true;
        return;
      }

      ticketsToSend.push({
        id,
        payload: {
          title,
          queue_id: parseInt(queue_id),
          state_id: parseInt(state_id),
          priority_id: parseInt(priority_id),
          user_id: ownerId ? parseInt(ownerId) : undefined,
          responsible_user_id: responsibleId ? parseInt(responsibleId) : undefined,
          type_id: type_id ? parseInt(type_id) : undefined,
          customer_id: customerId || undefined,
          customer_user_id: customerUserId || undefined,
          subject: subject || undefined,
          body: body || undefined,
          attachments: (this.rowAttachments[id] || []).length > 0 ? this.rowAttachments[id] : undefined
        }
      });
    });

    if (hasValidationError) return;

    // Send tickets one by one
    this.activeRequests = true;
    const submitBtn = document.getElementById('bulk-submit-btn');
    const origBtnHtml = submitBtn.innerHTML;
    submitBtn.disabled = true;

    Toast.info(`Inizio invio di ${ticketsToSend.length} ticket...`);

    let successCount = 0;
    let failCount = 0;

    for (const ticket of ticketsToSend) {
      const dot = document.getElementById(`status-dot-${ticket.id}`);
      dot.className = 'row-status-dot pending';

      try {
        submitBtn.innerHTML = `<div class="spinner" style="width:16px;height:16px;border-width:2px;"></div> Invio riga ${ticket.id}...`;

        const result = await App.api('/api/tickets', {
          method: 'POST',
          body: JSON.stringify(ticket.payload)
        });

        dot.className = 'row-status-dot success';
        dot.title = `Successo: Ticket #${result.tn}`;
        successCount++;

      } catch (err) {
        console.error(`Error creating bulk ticket row ${ticket.id}:`, err);
        dot.className = 'row-status-dot error';
        dot.title = `Errore: ${err.message}`;
        failCount++;
      }
    }

    this.activeRequests = false;
    submitBtn.disabled = false;
    submitBtn.innerHTML = origBtnHtml;

    if (failCount === 0) {
      Toast.success(`Tutti i ${successCount} ticket sono stati creati con successo!`);
      this.savedRows = [];
      this.rowAttachments = {};
      setTimeout(() => {
        window.location.hash = '#/tickets';
      }, 1500);
    } else {
      this.saveState();
      Toast.warning(`Invio completato: ${successCount} creati, ${failCount} falliti. Controlla i pallini colorati per i dettagli.`);
    }
  }
};