<?php

/**
* Implements hook_menu_alter()
*/
function workbench_moderation_notes_menu_alter(&$items) {
  $items['node/%node/moderation']['page callback'] = 'workbench_moderation_notes_node_history_view';
  $items['node/%node/moderation']['file'] = 'workbench_moderation_notes.pages.inc';
  $items['node/%node/moderation']['file path'] = drupal_get_path('module', 'workbench_moderation_notes');
}

function workbench_moderation_notes_form_workbench_moderation_moderate_form_alter(&$form) {
  if (isset($form['#access']) && $form['#access'] === FALSE) {
    return;
  }
  $form['note'] = array(
    '#type' => 'textarea',
    '#title' => t('Notes'),
    '#rows' => 2,
    '#weight' => -4,
    );
  unset($form['#theme']);
  unset($form['#attributes']['class']);
  $form['state']['#title'] = t('Select new status');
  $form['submit']['#value'] = t('Save');
  // $form['#submit'][] = 'workbench_moderation_notes_form_workbench_moderation_moderate_form_alter_submit';
  foreach($form['#submit'] as $k => $callback) {
    if ($callback == 'workbench_moderation_moderate_form_submit') {
      // unset($form['#submit'][$k]);
      $form['#submit'][$k] = 'workbench_moderation_notes_form_workbench_moderation_moderate_form_alter_submit';
    }
  }
}

/*
 * Submit callback to add the note to a workbench record.
 */
function workbench_moderation_notes_form_workbench_moderation_moderate_form_alter_submit($form, $form_state) {
  global $workbench_moderation_notes_note;
  $workbench_moderation_notes_note = $form_state['values']['note'];

  if (_workbench_moderation_moderate_access($form_state['values']['node'], $form_state['values']['state'])) {
    workbench_moderation_moderate($form_state['values']['node'], $form_state['values']['state']);
  }

  // This is not ideal, but if the form is invoked from a node's draft tab and
  // used to publish the node, the draft tab will not be available after
  // publishing, and Drupal's will throw an access denied error before it is
  // able to redirect to the published revision.
  
  $query = db_select('workbench_moderation_node_history', 'w')
                  ->condition('w.nid', $form_state['values']['node']->nid);
  $query->addExpression('max(w.hid)', 'max_hid');
  $latest_id = $query->execute()
                  ->fetchField();
  db_update('workbench_moderation_node_history')
    ->condition('nid', $form_state['values']['node']->nid)
    ->condition('hid', $latest_id)
    ->fields(array('note' => $form_state['values']['note']))
    ->execute();
  if (!empty($form['#destination'])) {
    if ($form_state['values']['state'] == workbench_moderation_state_published()) {
      if ($uri = entity_uri('node', $form['node']['#value'])) {
        $form_state['redirect'] = array($uri['path'], $uri['options']);
      }
    }
    else {
      $form_state['redirect'] = $form['#destination'];
    }
    drupal_redirect_form($form_state);
  }
}

/**
 * Implements hook_views_api().
 */
function workbench_moderation_notes_views_api() {
  return array('api' => 2.0);
}

/**
+ * Implements hook_token_info().
+ */
function workbench_moderation_notes_token_info() {
  // Node tokens.
  $info['tokens']['node']['workbench-moderation-notes'] = array(
    'name' => t('Current Workbench moderation notes'),
    'description' => t('Current Workbench moderation note for the node.')
  );
  return $info;
}

/**
 * Implements hook_tokens().
 */
function workbench_moderation_notes_tokens($type, $tokens, array $data = array(), array $options = array()) {

  $replacements = array();
  // Node tokens.
  global $workbench_moderation_notes_note;
  if ($workbench_moderation_notes_note != null){
    foreach ($tokens as $name => $original) {
      switch ($name) {
        case 'workbench-moderation-notes':
            $replacements[$original] = $workbench_moderation_notes_note;
            $workbench_moderation_notes_note = null;
            break;
       }
    }
    return $replacements;
  }
}