const browser = require('../browser');

module.exports = async ({ data }) => {
  if (!data) throw new Error('Data é obrigatória');
  await browser.start();
  
  const formDataJson = JSON.stringify(data).replace(/'/g, "\\'");
  
  const result = await browser.evaluateJS(`
    (function() {
      try {
        var formData = JSON.parse('${formDataJson}');
        var inputs = Array.from(document.querySelectorAll('input, textarea, select'));
        var filled = [];
        inputs.forEach(function(input) {
          var keys = Object.keys(formData);
          for (var i = 0; i < keys.length; i++) {
            var k = keys[i];
            var match = input.name && input.name.toLowerCase().indexOf(k.toLowerCase()) >= 0 ||
                        input.placeholder && input.placeholder.toLowerCase().indexOf(k.toLowerCase()) >= 0 ||
                        input.id && input.id.toLowerCase().indexOf(k.toLowerCase()) >= 0;
            if (match) {
              input.value = formData[k];
              input.dispatchEvent(new Event('input', { bubbles: true }));
              input.dispatchEvent(new Event('change', { bubbles: true }));
              filled.push({ field: input.name || input.id || 'unknown', value: formData[k] });
              break;
            }
          }
        });
        return filled;
      } catch (e) {
        return { error: e.message };
      }
    })()
  `);
  
  return { success: true, action: 'fill_form_auto', filled: result, count: Array.isArray(result) ? result.length : 0 };
};