Auto-save Draft Functionality

function onLoad() {
  // Configuration
  var autoSaveInterval = 120000;  // Auto-save every 2 minutes (120000ms)
  var storageKey = 'autosave_' + g_form.getTableName() + '_' + g_form.getUniqueValue();

  // Skip auto-save for existing records that are already saved
  // or if user is read-only
  if (!g_form.isNewRecord() && !g_form.isModified()) {
    return;
  }

  // Function to save form data to browser storage
  function saveDraft() {
    // Only save if form has been modified
    if (!g_form.isModified()) {
      return;
    }

    var draftData = {
      timestamp: new Date().toISOString(),
      table: g_form.getTableName(),
      sys_id: g_form.getUniqueValue(),
      fields: {}
    };

    // Get list of fields to save (exclude system fields)
    var fieldsToSave = ['short_description', 'description', 'category', 
                        'subcategory', 'priority', 'urgency', 'impact',
                        'assignment_group', 'assigned_to', 'work_notes'];

    // Save each field value
    fieldsToSave.forEach(function(fieldName) {
      var value = g_form.getValue(fieldName);
      if (value) {
        draftData.fields[fieldName] = value;

        // For reference fields, also save display value
        if (g_form.getField(fieldName) && 
            g_form.getField(fieldName).type === 'reference') {
          draftData.fields[fieldName + '_display'] = g_form.getDisplayValue(fieldName);
        }
      }
    });

    // Save to localStorage
    try {
      localStorage.setItem(storageKey, JSON.stringify(draftData));
      console.log('Draft auto-saved at ' + draftData.timestamp);

      // Optional: Show subtle notification
      g_form.addInfoMessage('Draft saved automatically');
      setTimeout(function() {
        g_form.clearMessages();
      }, 2000);

    } catch (e) {
      console.error('Error saving draft:', e);
      // localStorage might be full or disabled
    }
  }

  // Function to restore draft
  function restoreDraft() {
    try {
      var savedDraft = localStorage.getItem(storageKey);

      if (savedDraft) {
        var draftData = JSON.parse(savedDraft);

        // Check if draft is recent (less than 24 hours old)
        var draftAge = new Date() - new Date(draftData.timestamp);
        var maxAge = 24 * 60 * 60 * 1000;  // 24 hours

        if (draftAge < maxAge) {
          // Ask user if they want to restore
          var draftDate = new Date(draftData.timestamp);
          var message = 'A draft from ' + draftDate.toLocaleString() + 
                       ' was found. Would you like to restore it?';

          if (confirm(message)) {
            // Restore each field
            Object.keys(draftData.fields).forEach(function(fieldName) {
              // Skip display value fields
              if (fieldName.endsWith('_display')) {
                return;
              }

              var value = draftData.fields[fieldName];
              if (value && !g_form.getValue(fieldName)) {
                g_form.setValue(fieldName, value);
              }
            });

            g_form.addInfoMessage('Draft restored successfully');
          }

          // Clean up old draft
          localStorage.removeItem(storageKey);
        } else {
          // Remove expired draft
          localStorage.removeItem(storageKey);
        }
      }
    } catch (e) {
      console.error('Error restoring draft:', e);
    }
  }

  // Function to clear draft
  function clearDraft() {
    try {
      localStorage.removeItem(storageKey);
      console.log('Draft cleared');
    } catch (e) {
      console.error('Error clearing draft:', e);
    }
  }

  // Restore draft if exists (only for new records)
  if (g_form.isNewRecord()) {
    restoreDraft();
  }

  // Set up auto-save interval
  var autoSaveTimer = setInterval(saveDraft, autoSaveInterval);

  // Save before leaving page
  window.addEventListener('beforeunload', function() {
    saveDraft();
  });

  // Clear draft on successful submit
  g_form.onSubmit(function() {
    clearDraft();
  });

  // Add manual save button
  // g_form.addInfoMessage('<a href="javascript:saveDraft()">Save draft now</a>');

  console.log('Auto-save enabled. Interval: ' + (autoSaveInterval/1000) + ' seconds');
}