<?php
// $Id$

/**
 * @file
 * Enable addition of custom fileds on video nodes created by video module.
 *
 * @author Fabio Varesano <fvaresano at yahoo dot it>
 */


/**
 * Implementation of hook_help().
 */
function video_customfields_help($section) {
  switch ($section) {
    case 'admin/settings/modules#description':
      return t('Enable addition of custom fileds on video nodes created by video module.');
  }
}


/**
 * Implementation of hook_perm().
 */
function video_customfields_perm() {
  return array('insert custom fields');
}

/**
 * Implementation of hook_menu().
 */
function video_customfields_menu($may_cache) {
  $items = array();
  if ($may_cache) {
    $items[] = array(
        'path' => 'admin/content/video/customfields',
        'title' => t('Customfields'),
        'description' => t('Administer video_customfields module settings'),
        'callback' => 'drupal_get_form',
        'callback arguments' => array('video_customfields_settings_form'),
        'access' => user_access('administer site configuration'),
        'type' => MENU_NORMAL_ITEM,
      );
  }
  return $items;
}

/**
 * Settings Hook
 *
 * @return
 *   string of form content or error message
 */
function video_customfields_settings_form() {
  //Must have "administer site configuration" and "administer video" privilages.
  if (!user_access('administer video')) {
    drupal_access_denied();
  }

  $form['customfields'] = array(
    '#type' => 'fieldset',
    '#weight' => -1,
    '#collapsible' => TRUE,
    '#collapsed' => FALSE,
    '#title' => t('Custom display fields'),
    '#description' => t('Creates custom fields. Fields only show up if you give them a name.')
  );
  $form['customfields']['video_customfieldtitle'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field group title'),
    '#default_value' => variable_get('video_customfieldtitle', ''),
    '#description' => t('Title of the group of all custom fields.'));
  $form['customfields']['video_customfield1'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 1 title'),
    '#default_value' => variable_get('video_customfield1', ''));
  $form['customfields']['video_customfield2'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 2 title'),
    '#default_value' => variable_get('video_customfield2', ''));
  $form['customfields']['video_customfield3'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 3 title'),
    '#default_value' => variable_get('video_customfield3', ''));
  $form['customfields']['video_customfield4'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 4 title'),
    '#default_value' => variable_get('video_customfield4', ''));
  $form['customfields']['video_customfield5'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 5 title'),
    '#default_value' => variable_get('video_customfield5', ''));
  $form['customfields']['video_customfield6'] = array(
    '#type' => 'textfield',
    '#title' => t('Custom field 6 title'),
    '#default_value' => variable_get('video_customfield6', ''));


  $options = array(1 => 'Yes', 0 => 'No');

  $form['customfields']['video_customgroupcollapsed'] = array(
    '#type' => 'radios',
    '#title' => t('Start group initially collapsed'),
    '#options' => $options,
    '#default_value' => variable_get('video_customgroupcollapsed', 1),
    '#description' => t('Should the custom fields group be initially collapsed when creating and editing video nodes?')
  );
  return system_settings_form($form);
}


/**
 * Implementation of hook_form_alter()
 * We use this to add some custom fields to the video creation form.
 * Fields will be displayed only if field title is set on settings page.
 */
function video_customfields_form_alter($form_id, &$form) {
  
  if($form_id == 'video_node_form' && isset($form['video']) && user_access('insert custom fields')) {

    //get node object from form
    $node = $form['#node'];
    
    $title1 = variable_get('video_customfield1', '');
    $title2 = variable_get('video_customfield2', '');
    $title3 = variable_get('video_customfield3', '');
    $title4 = variable_get('video_customfield4', '');
    $title5 = variable_get('video_customfield5', '');
    $title6 = variable_get('video_customfield6', '');
   
    //Only display the custom fields group if atleast one field has a title.
    if ($title1 . $title2 . $title3 . $title4 . $title5 . $title6 != '') {
      $form['customfields'] = array('#type' => 'fieldset', '#title' => variable_get('video_customfieldtitle', 'Custom Fields'), '#collapsible' => TRUE, '#collapsed' => variable_get('video_customgroupcollapsed', FALSE), '#weight' => -17);
      //If the custom field title is not blank, then display it.
      if ($title1 != '') {
        $form['customfields']['custom_field_1'] = array(
          '#type' => 'textfield', '#title' => $title1, '#maxlength' => 250, '#default_value' => $node->custom_field_1);
      }
      if ($title2 != '') {
        $form['customfields']['custom_field_2'] = array(
          '#type' => 'textfield', '#title' => $title2, '#maxlength' => 250, '#default_value' => $node->custom_field_2);
      }
      if ($title3 != '') {
        $form['customfields']['custom_field_3'] = array(
          '#type' => 'textfield', '#title' => $title3, '#maxlength' => 250, '#default_value' => $node->custom_field_3);
      }
      if ($title4 != '') {
        $form['customfields']['custom_field_4'] = array(
          '#type' => 'textfield', '#title' => $title4, '#maxlength' => 250, '#default_value' => $node->custom_field_4);
      }
      if ($title5 != '') {
        $form['customfields']['custom_field_5'] = array(
          '#type' => 'textarea', '#title' => $title5, '#rows' => 4, '#default_value' => $node->custom_field_5);
      }
      if ($title6 != '') {
        $form['customfields']['custom_field_6'] = array(
          '#type' => 'textarea', '#title' => $title6, '#rows' => 4, '#default_value' => $node->custom_field_6);
      }
    }
  }
}


/**
 * Implementation of hook_nodeapi()
 */
function video_customfields_nodeapi(&$node, $op, $teaser) {
  if($node->type == 'video') {
    switch ($op) {
      case 'view':
        //If the main node view is being displayed then add the extra video information.
        if ($teaser == FALSE) {

          if (($node->custom_field_1 . $node->custom_field_2 . $node->custom_field_3 . $node->custom_field_4 . $node->custom_field_5 . $node->custom_field_6) != '') { //Make sure there is data to display.
            //Add the HTML formatted output of the custom fields to the bottom.
            $node->body .= theme('video_customfields', $node);
          }
        }
      break;
    }
  }
}


/**
 * Display custom fields on the view page.
 *
 * @param $node
 *   object with node information
 *
 * @return
 *   string of content to display
 */
function theme_video_customfields($node) {
  //Adds the custom fields.
  $group_title = variable_get('video_customfieldtitle', ''); //Title of the custom fields.
  $title1 = variable_get('video_customfield1', '');
  $title2 = variable_get('video_customfield2', '');
  $title3 = variable_get('video_customfield3', '');
  $title4 = variable_get('video_customfield4', '');
  $title5 = variable_get('video_customfield5', '');
  $title6 = variable_get('video_customfield6', '');
  //Run the fields through the input filter set for the node, then remove paragraphs.
  //Removes the <p> and </p> tags from the filter pass return. This allows each field to be on one line.
  //A better system might be to remove only the first and last <p></P> tags.
  $field1 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_1, $node->format, FALSE));
  $field2 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_2, $node->format, FALSE));
  $field3 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_3, $node->format, FALSE));
  $field4 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_4, $node->format, FALSE));
  $field5 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_5, $node->format, FALSE));
  $field6 = str_replace(array('<p>', '</p>'), '', check_markup($node->custom_field_6, $node->format, FALSE));

  $output = '';
  //Make sure all the titles are not blank, if not then display them.
  if (($title1 . $title2 . $title3 . $title4 . $title5 . $title6) != '') {
    $output = '<div class="videofields">'; //Enclose all output in "videofields" div class.
    if ($group_title != '') {
      $output .= '<div class="title"><h2>' . check_plain($group_title) . '</h2></div>' . "\n";
    }
    if ($title1 != '' and $node->custom_field_1 != '') {
      $fields[] = array('title' => $title1, 'body' => $field1);
    }
    if ($title2 != '' and $node->custom_field_2 != '') {
      $fields[] = array('title' => $title2, 'body' => $field2);
    }
    if ($title3 != '' and $node->custom_field_3 != '') {
      $fields[] = array('title' => $title3, 'body' => $field3);
    }
    if ($title4 != '' and $node->custom_field_4 != '') {
      $fields[] = array('title' => $title4, 'body' => $field4);
    }
    if ($title5 != '' and $node->custom_field_5 != '') {
      $fields[] = array('title' => $title5, 'body' => $field5);
    }
    if ($title6 != '' and $node->custom_field_6 != '') {
      $fields[] = array('title' => $title6, 'body' => $field6);
    }
    $output .= theme('video_fields', $fields); //Generate all the fields HTML.

    $output .= '</div><br />'; //Close the "videofields" class div.
  }
  return $output;
}