<?php

/**
 * @file
 * This is the new Islandora Basic Image module.
 */

define('ISLANDORA_BASIC_IMAGE_CONTENT_TYPE', 'islandora_basic_image');
define('ISLANDORA_BASIC_IMAGE_RDF_TYPE', 'islandora:basic_image');
define('ISLANDORA_BASIC_IMAGE_MEDIUM_SIZE_FIELD', 'field_medium_size');

/**
 * Implements hook_node_info().
 */
function islandora_basic_image_node_info() {
  return array(
    ISLANDORA_BASIC_IMAGE_CONTENT_TYPE => array(
      'name' => t("Basic Image"),
      'base' => ISLANDORA_BASIC_IMAGE_CONTENT_TYPE,
      'description' => t("A Drupal node modeling a basic image pcdm:Object"),
    ),
  );
}

/**
 * Implements hook_form().
 */
function islandora_basic_image_form($node, array &$form_state) {
  return node_content_form($node, $form_state);
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function islandora_basic_image_form_islandora_basic_image_node_form_alter(&$form, array &$form_state, $form_id) {
  $form['title']['#weight'] = -6;
  $form['obj'] = array(
    '#type' => 'file',
    '#title' => t('Basic Image'),
    '#description' => t('Upload your archival object to put in Fedora.  This will generate new derivatives'),
    '#weight' => -5,
  );

  // Add a collection picker if node is new (e.g. this is an insert form).
  $node = $form_state['node'];
  if (!isset($node->nid) || isset($node->is_new)) {
    // Construct list of options from db and a default.
    $from_db = db_select('node', 'n')
        ->fields('n', array('uuid', 'title'))
        ->condition('n.type', ISLANDORA_COLLECTION_CONTENT_TYPE)
        ->execute()
        ->fetchAllKeyed();

    // Add the select to the form.
    $form['parent_collection'] = array(
      '#type' => 'select',
      '#title' => t('Parent Collection'),
      '#description' => t('Select the parent collection to add this to.'),
      '#options' => $from_db,
      '#weight' => -4,
      '#required' => TRUE,
    );

    // Keep title on top.
    $form['title']['#weight'] = -7;

    // Tack on a custom submit handler to attach data on the entity for use
    // later on in the post action hooks.
    array_unshift($form['#submit'], 'islandora_basic_image_add_parent_uuid');
  }
}

/**
 * Custom submit handler to pass along parent uuid.
 *
 * @param array $form
 *   Drupal form.
 * @param array $form_state
 *   Drupal form state.
 */
function islandora_basic_image_add_parent_uuid(array $form, array &$form_state) {
  $node = $form_state['node'];
  $node->parent_collection = "";
  if (isset($form_state['values']['parent_collection'])) {
    $form_state['values']['field_fedora_has_parent']['und'][0]['value'] = $form_state['values']['parent_collection'];
  }
}

/**
 * Implements hook_rdf_mapping().
 */
function islandora_basic_image_rdf_mapping() {
  module_load_include('inc', 'islandora', 'include/rdf_mapping');
  $rdf_types = array(
    ISLANDORA_PCDM_OBJECT_RDF_TYPE,
    ISLANDORA_BASIC_IMAGE_RDF_TYPE,
  );
  return islandora_get_default_rdf_mapping(ISLANDORA_BASIC_IMAGE_CONTENT_TYPE, $rdf_types);
}

/**
 * Implements hook_node_postinsert().
 */
function islandora_basic_image_node_postinsert($node) {
  module_load_include('inc', 'islandora', 'include/utils');
  if (islandora_ignore_hooks()) {
    return;
  }

  // Exit early if it's not a basic_image.
  if (strcmp($node->type, ISLANDORA_BASIC_IMAGE_CONTENT_TYPE) != 0) {
    return;
  }

  $parent_collection = $node->parent_collection;

  $nodes = entity_uuid_load('node', array($node->uuid));

  // Exit early if the node never was successfully inserted in the database.
  if (empty($nodes)) {
    return;
  }

  $node = array_pop($nodes);

  // Set the options for httprl.
  $options = array(
    'method' => 'POST',
    'data' => array(
      'mimetype' => $_FILES['files']['type']['obj'],
      'node' => json_encode($node),
    ),
  );

  // Add the obj file to the options if it exists.
  $has_obj = isset($_FILES['files']['tmp_name']['obj']);
  if ($has_obj) {
    $options['data']['files'] = array(
      'obj' => array(
        $_FILES['files']['tmp_name']['obj'],
      ),
    );
  }

  $url = "http://127.0.0.1:8181/cxf/islandora/image/$parent_collection";
  httprl_request($url,
                 $options);
  $response = httprl_send_request();
}

/**
 * Implements hook_node_postupdate().
 */
function islandora_basic_image_node_postupdate($node) {
  module_load_include('inc', 'islandora', 'include/utils');
  if (islandora_ignore_hooks()) {
    return;
  }

  // Exit early if it's not a basic image.
  if (strcmp($node->type, ISLANDORA_BASIC_IMAGE_CONTENT_TYPE) != 0) {
    return;
  }

  $nodes = entity_uuid_load('node', array($node->uuid));
  if (empty($nodes)) {
    return;
  }
  $node = array_pop($nodes);

  // Set the options for httprl.
  $options = array(
    'method' => 'PUT',
    'data' => array(
      'mimetype' => $_FILES['files']['type']['obj'],
      'node' => json_encode($node),
    ),
  );

  // Add the obj file to the options if it exists.
  $has_obj = isset($_FILES['files']['tmp_name']['obj']);
  if ($has_obj) {
    $options['data']['files'] = array(
      'obj' => array(
        $_FILES['files']['tmp_name']['obj'],
      ),
    );
  }

  httprl_request("http://127.0.0.1:8181/cxf/islandora/image/{$node->uuid}",
                 $options);
  $response = httprl_send_request();
}

/**
 * Implements hook_node_postdelete().
 */
function islandora_basic_image_node_postdelete($node) {
  module_load_include('inc', 'islandora', 'include/utils');
  if (islandora_ignore_hooks()) {
    return;
  }

  // Exit early if it's not a collection.
  if (strcmp($node->type, ISLANDORA_BASIC_IMAGE_CONTENT_TYPE) != 0) {
    return;
  }

  $uuid = $node->uuid;
  httprl_request("http://127.0.0.1:8181/cxf/islandora/image/$uuid",
                 array(
                   'method' => 'DELETE',
                 ));
  $response = httprl_send_request();
}