<?php
// $Id$

/**
 * @file
 * Import/Export functionality provided by Uc taxes module.
 */
 
/**
 * Export tax rates form.
 */
function uc_taxes_export_rates(&$form_state, $rate = NULL) {
  $rate = uc_taxes_rate_load($rate);
  exportables_machine_get('uc_taxes', $rate);
  drupal_set_title(t('Export @rate', array('@rate' => $rate->name)));
  ctools_include('export');
  $code = ctools_export_object('uc_taxes', $rate);
  return ctools_export_form($form_state, $code, t('Exported code'));
}

/**
 * Import tax rate.
 */
function uc_taxes_import_rates() {
  $form['machine_name'] = array(
    '#type' => 'textfield',
    '#title' => t('Machine name'),
    '#description' => t('Optional. Use this machine name instead the provided in the import code.'),
  );
  $form['name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name'),
    '#description' => t('Optional. Use this name instead the provided in the import code.'),
  );
  $form['import'] = array(
    '#type' => 'textarea',
    '#title' => t('Import code'),
    '#rows' => 10,
    '#description' => t('Paste here the code to import. If Name and Machine Name are provided, they will be used overriding values pasted here.'),
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Import'),
  );

  return $form;
}

/**
 * Validate tax import.
 */
function uc_taxes_import_rates_validate($form, &$form_state) {
  ob_start();
  eval($form_state['values']['import']);
  ob_end_clean();

  if (!isset($rate)) {
    drupal_set_message(t('An error has occured and the tax rate could not be imported.'), 'error');
    return;
  }
  if (!empty($form_state['values']['machine_name'])) {
    $rate->machine = $form_state['values']['machine_name'];
  }
  if (!empty($form_state['values']['name'])) {
    $rate->name = $form_state['values']['name'];
  }  

  if (db_result(db_query("SELECT 1 FROM {exportables} WHERE machine = '%s' AND type = 'uc_taxes'", $rate->machine))) {
    $place = 'import';
    if (!empty($form_state['values']['machine_name'])) {
      $place = 'machine_name';
    }
    return form_error($form[$place], t('Tax rate names needs to be unique. A tax with the machine name %name already exists.', array('%name' => $rate->machine)));
  }
  if (db_result(db_query("SELECT 1 FROM {uc_taxes} WHERE name = '%s'", $rate->name))) {
    $place = 'import';
    if (!empty($form_state['values']['name'])) {
      $place = 'name';
    }
    return form_error($form[$place], t('Tax rate names needs to be unique. A tax named %name already exists.', array('%name' => $rate->name)));
  }  

  $form_state['values']['import_parsed'] = $rate;
}

/**
 * Submit tax import.
 */
function uc_taxes_import_rates_submit($form, &$form_state) {
  uc_taxes_rate_save($form_state['values']['import_parsed']);
  if ($rate->name) {
    drupal_set_message(t('Rate %name imported', array('%name' => $rate->name)));
  }
  else {
    drupal_set_message(t('Failed to import the rate.'), 'warning');
  }
  $form_state['redirect'] = 'admin/store/settings/taxes';
}