<?php
/**
 * Implementation of hook_enable().
 */
function mediathek_enable() {

  #adds a field for the current collection
  // Check if our field is not already created.
  if (!field_info_field('field_mediathek_entry')) {
    $field = array(
        'field_name' => 'field_mediathek_entry',
        'type' => 'mediathek_mediathek_entry',
    );
    field_create_field($field);

    // Create the instance on the bundle.
    $instance = array(
        'field_name' => 'field_mediathek_entry',
        'entity_type' => 'node',
        'label' => 'Mediathek Entry',
        'bundle' => 'node',
        // If you don't set the "required" property then the field wont be required by default.
        'required' => False,
        'settings' => array(
        ),
        'widget' => array(
            'type' => 'mediathek_default_mediathek_entry',
        ),
    );
    field_create_instance($instance);
  }
}

/* implements a new field type for the medithek id */

function mediathek_field_info(){

  return array('mediathek_mediathek_entry' => array (
      'label' => t('Mediathek Item'),
      'description' => t('This field stores an mediathek Item'),
      'settings' => array('max_length' =>20),
      'instance_settings' => array('text_processing' => 0),
      'default_widget' => 'mediathek_default_mediathek',
      'default_formatter' => 'mediathek_mediaviewer',
  ),

  );
}

function mediathek_field_is_empty($item, $field){
  return empty($item['url']);
}

function mediathek_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {


  $field_name = $field['field_name'];
  $field_type = $field['type'];


  $url = isset($items[$delta]['url']) ? $items[$delta]['url'] : '';
  $height = isset($items[$delta]['url']) ? $items[$delta]['height'] : '';
  $width = isset($items[$delta]['url']) ? $items[$delta]['width'] : '';

  $widget = $element;
  $widget['#delta'] = $delta;

  switch ($instance['widget']['type']) {



    case 'mediathek_default_mediathek':

      $fieldset_info = element_info('fieldset');
      $process = array_merge($fieldset_info['#process'], array('mediathek_media_entry_process'));


      $widget+=
          array(
              '#type' => 'fieldset',
              '#title' => t('Contact settings'),
              '#weight' => 5,
              '#collapsible' => TRUE,
              '#collapsed' => FALSE,
              '#tree' => TRUE,
              '#process' => $process,
          );


      $widget['url'] = array(
              '#title' => t('Url'),
              '#type' => 'textfield',
              '#default_value' => $url,
              '#size' => 150,
              '#maxlength' => 500,
          );

      $widget['height'] = array(
          '#title' => t('Height'),
          '#type' => 'textfield',
          '#default_value' => $height,
          '#size' => 20,
          '#maxlength' => 20,
      );



      $widget['width'] = array(
          '#title' => t('Width'),
          '#type' => 'textfield',
          '#default_value' => $width,
          '#size' => 20,
          '#maxlength' => 20,
      );





      $element['media'] = $widget;
      break;



  }




  return $element;
}

function mediathek_media_entry_process(&$form, &$form_state, $complete){


  array_pop($form['#parents']);
  return $form;
}

function mediathek_field_widget_info() {
  #TODO:both types should check if field is valid
  return array(
  'mediathek_default_mediathek' => array(
  'label' => t('Media Item'),
  'field types' => array('mediathek_mediathek_entry'),
  ),

  );
}


function mediathek_field_formatter_info() {

  return array(
      // This formatter shows the obejct with fullmetadata
      'mediathek_mediaviewer' => array(
          'label' => t('Mediathek viewer'),
          'field types' => array('mediathek_mediathek_entry'),
      )
  );
}


function mediathek_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();


  switch ($display['type']) {
    // This formatter simply outputs the field as text and with a color.
    case 'mediathek_mediaviewer':

      foreach ($items as $delta => $item) {

        $url = $item['url'];
        $width = $item['width'];
        $height= $item['height'];

        if ($url!=""){
        $element[$delta]['#markup'] = theme('mediathek_theme_mediathek_mediaviewer',array('item' => $item ));
        }

        }

      break;
  }

  return $element;
}

function mediathek_theme(){
return array(
    'mediathek_theme_mediathek_mediaviewer'  => array(
        'variables' => array('item' => NULL),
        'template' => 'mediathek-theme-mediathek-mediaviewer',
        )
);

}