<?php
// $Id: nodewords_ui.module,v 1.1.4.17 2010-05-26 04:28:05 kiam Exp $

/**
 * @file
 * Implement the user interface visible to authenticated users.
 */

/**
 * Implements hook_content_extra_fields().
 * Allow the meta tags fields to be sorted in the node edit forms.
 */
function nodewords_ui_content_extra_fields() {
  $extras = array();

  $extras['nodewords'] = array(
    'label' => t('Meta tags'),
    'description' => t('Meta tags fieldset.'),
    'weight' => 10,
  );

  return $extras;
}

/**
 * Implements hook_form_alter().
 */
function nodewords_ui_form_alter(&$form, $form_state, $form_id) {
  $bool = (
    isset($form['type']) &&
    isset($form['#node']) &&
    $form_id == $form['type']['#value'] . '_node_form'
  );
  if ($bool) {
    $node = $form['#node'];
    $form['nodewords'] = nodewords_tags_edit_fields(
      _nodewords_ui_get_node_metatags_type($node),
      !empty($node->nodewords['metatags']) ? $node->nodewords['metatags'] : array(),
      array(
        'fieldset' => TRUE,
        'tag options' => array('content type' => $form['type']['#value']),
      )
    );
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function nodewords_ui_form_nodewords_admin_settings_form_alter(&$form, $form_state) {
  $enabled_options = array();
  $user_pages = array(
    NODEWORDS_TYPE_NODE,
    NODEWORDS_TYPE_USER,
  );
  $tags_info = nodewords_get_possible_tags();

  if (nodewords_check_version('2.16') && !empty($tags_info)) {
    $form['enabled']['ui'] = array(
      '#type' => 'fieldset',
      '#title' => t('Meta tags enabled on other edit forms'),
      '#weight' => 2,
      '#theme' => 'nodewords_ui_enabled_metatags',
    );

    $select_options = array(
      'never' => t('Never'),
      'empty' => t('When the meta tag is empty'),
      'always' => t('Always'),
    );

    foreach ($tags_info as $name => $info) {
      $bool = (
        !empty($info['context']['allowed']) &&
        is_array($info['context']['allowed']) &&
        count(array_intersect($user_pages, $info['context']['allowed'])) &&
        !empty($info['context']['denied']) &&
        is_array($info['context']['denied']) &&
        (count(array_intersect($user_pages, $info['context']['denied'])) != count($user_pages))
      );
      if ($bool || empty($info['context']['allowed']) || empty($info['context']['allowed'])) {
        $enabled_options[$name] = '';

        $form['enabled']['ui']['nodewords_ui_use_default_value_' . $name] = array(
          '#type' => 'select',
          '#default_value' => variable_get('nodewords_ui_use_default_value_' . $name, 'empty'),
            '#options' => $select_options,
          '#multiple' => FALSE,
        );
      }
    }

    $form['enabled']['ui']['nodewords_ui_edit'] = array(
      '#type' => 'checkboxes',
      '#options' => $enabled_options,
      '#default_value' => variable_get('nodewords_ui_edit', array()),
      '#checkall' => TRUE ? 'nodewords-enabled-metatags-ui-edit-form' : FALSE,
    );
  }
  else {
    $form['nodewords_ui_edit'] = array(
      '#type' => 'value',
      '#value' => variable_get('nodewords_ui_edit', array()),
    );
  }
}

/**
 * Implements hook_nodeapi().
 */
function nodewords_ui_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
  $bool = (
    $op == 'prepare translation' &&
    isset($node->translation_source->nodewords)
  );
  if ($bool) {
    $node->nodewords = $node->translation_source->nodewords;
  }
}

/**
 * Implements hook_theme().
 */
function nodewords_ui_theme() {
  return array(
    'nodewords_ui_enabled_metatags' => array(
      'arguments' => array('form' => array()),
    ),
  );
}

/**
 * Implements hook_user().
 */
function nodewords_ui_user($op, &$edit, &$account, $category = NULL) {
  global $user;

  $bool = (
    nodewords_check_version('2.16') &&
    $op == 'form' &&
    (
      user_access('administer meta tags') ||
      $user->uid == $account->uid
    ) &&
    $category == 'account'
  );
  if ($bool) {
    $form['nodewords'] = nodewords_tags_edit_fields(
      array('type' => NODEWORDS_TYPE_USER, 'id' => $account->uid),
      isset($account->nodewords['metatags']) ? $account->nodewords['metatags'] : array(),
      array('fieldset' => TRUE)
    );

    return $form;
  }
}

/**
 * Render the list of enabled meta tags in non administrative forms.
 */
function theme_nodewords_ui_enabled_metatags($form) {
  foreach (nodewords_get_possible_tags() as $name => $info) {
    $row = array();

    if (isset($form['nodewords_ui_edit'][$name])) {
      $row[] = $info['label'];
      $row[] = drupal_render($form['nodewords_ui_edit'][$name]);
      $row[] = drupal_render($form['nodewords_ui_use_default_value_' . $name]);

      $rows[] = $row;
    }
  }

  $header[] = t('Meta tag');
  $header[] = array(
    'data' => t('Show in edit form'),
    'class' => (TRUE && count($rows) > 1) ? 'nodewords-enabled-metatags-ui-edit-form' : '',
  );
  $header[] = t('Use the default value');

  return theme('table', $header, $rows) . drupal_render($form);
}

function _nodewords_ui_get_node_metatags_type($node) {
  return array('type' => NODEWORDS_TYPE_NODE, 'id' => $node->nid, 'sid' => $node->vid);
}