<?php

function decisions_electoral_list($node) {

  $form['electoral_list']['add_user'] = array(
    '#type' => 'textfield',
    '#title' => t('Add user'),
    '#size' => 40,
    '#autocomplete_path' => 'user/autocomplete',
    '#description' => t('Add an individual user to the electoral list'),
  );
  	 
  $form['electoral_list']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Add user'),
  );
  	 	 
  $form['nid'] = array('#type' => 'hidden', '#value' => $node->nid);
  return drupal_get_form('decisions_electoral_list_form', $node->nid);

}

/****************************/
/* Electoral list functions */
/****************************/

/**
 * Creates the form for the electoral list.
 */
function decisions_electoral_list_form($form_state, $nid) {
  $form = array();
  $form['electoral_list'] = array(
                                  '#type' => 'fieldset',
                                  '#tree' => TRUE,
                                  '#title' => t('Administer electoral list'),
                                  '#collapsible' => TRUE,
                                  '#weight' => 2,
                                  '#collapsed' => TRUE,
                                  );

  $form['electoral_list']['add_user'] = array(
                                              '#type' => 'textfield',
                                              '#title' => t('Add user'),
                                              '#size' => 40,
                                              '#autocomplete_path' => 'user/autocomplete',
                                              '#description' => t('Add an individual user to the electoral list'),
                                              );

  $form['electoral_list']['submit'] = array(
                                            '#type' => 'submit',
                                            '#value' => t('Modify electoral list'),
                                            );

  $form['electoral_list']['reset'] = array(
                                           '#type' => 'button',
                                           '#value' => t('Reset electoral list'),
                                           );

  $form['nid'] = array('#type' => 'hidden', '#value' => $nid);
  return $form;        

}

/**
 * Validate changes to the electoral list
 */
function decisions_electoral_list_form_validate($form, &$form_state) {
  if ($form_state['values']['op'] == t('Reset electoral list')) {
    if (user_access('administer decisions')) {
      db_query('DELETE FROM {decisions_electoral_list} WHERE nid=%d', $form_state['values']['nid']);
      drupal_set_message(t('Electoral list cleared.'));
      $node = menu_get_object();
      if (_decisions_electoral_list_reset($node)) {
        drupal_set_message(t('Electoral list reset.'));
      }
      return;
    }
  }
  $add_user = $form_state['values']['electoral_list']['add_user'];
  if ($add_user) {
    // Check that the user exists
    if (db_fetch_object(db_query('SELECT uid FROM {users} WHERE name="%s"', $add_user))) {
      form_set_error('electoral_list][add_user', t('User %user does not exist.', array('%user' => $add_user)));
      return FALSE;
    }
  }
  else {
    form_set_error('electoral_list][add_user', t('Please enter a user.'));
    return FALSE;
  }
}
  	 
/**
 * Submit changes to the electoral list
 */
function decisions_electoral_list_form_submit($form, &$form_state) {
  $add_user = $form_state['values']['electoral_list']['add_user'];
  $nid = $form_state['values']['nid'];
  if ($add_user) {
    db_query('REPLACE INTO {decisions_electoral_list} (nid, uid) SELECT "%d", u.uid FROM users u WHERE u.name = "%s"', $nid, $add_user);
    drupal_set_message(t('%user added to electoral list.', array('%user' => $add_user)));
    drupal_goto('node/'. $nid .'/electoral_list');
  }
  else {
    drupal_not_found();
  }
}