exif.module

<?php


/**
 * @file
 * Entry point for exif module.
 */
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\exif\ExifContent;
use Drupal\exif\ExifHelp;
use Drupal\media\MediaInterface;
use Drupal\Node\NodeInterface;

/**
 * Implements hook_help().
 *
 * Manage the exif help page route.
 */
function exif_help($route_name, RouteMatchInterface $route_match) {
    switch ($route_name) {
        case 'help.page.exif':
            return ExifHelp::content();
        default:
            return NULL;
    }
}

/**
 * Implements hook_theme().
 */
function exif_theme() {
    return [
        'exif_sample' => [
            'variables' => [
                'taxonomy' => 'http://drupal.org/handbook/modules/taxonomy/',
                'image_path' => NULL,
                'metadata' => NULL,
            ],
            'template' => 'exif_sample',
        ],
        'exif_helper_page' => [
            'variables' => [
                'message' => NULL,
                'taxonomy' => 'http://drupal.org/handbook/modules/taxonomy/',
            ],
            'template' => 'exif_helper_page',
        ],
    ];
}

/**
 * Implements hook_entity_presave().
 *
 * Calculate the value for each metadata field so they can be stored correctly.
 */
function exif_entity_presave(EntityInterface $entity) {
    $entityType = '';
    if ($entity instanceof NodeInterface) {
        $entityType = 'node';
    }
    else {
        if (Drupal::moduleHandler()->moduleExists("media_entity") && $entity instanceof MediaInterface) {
            $entityType = 'media';
        }
    }
    if ($entityType != '') {
        $config = Drupal::configFactory()->get('exif.settings');
        $shouldUpdateMetadata = $config->get('update_metadata');
        if (!isset($shouldUpdateMetadata)) {
            $shouldUpdateMetadata = TRUE;
        }
        $inserting = !isset($entity->original);
        if ($inserting || $shouldUpdateMetadata) {
            $exifContentHandler = new ExifContent();
            $exifContentHandler->entity_insert_update($entityType, $entity);
        }
    }
}

/**
 * Implements hook_entity_create().
 */
function exif_entity_create(EntityInterface $entity) {
    $entityType = '';
    if ($entity instanceof NodeInterface) {
        $entityType = 'node';
    }
    else {
        if (Drupal::moduleHandler()->moduleExists("media_entity") && $entity instanceof MediaInterface) {
            $entityType = 'media';
        }
    }
    if ($entityType != '') {
        $config = Drupal::configFactory()->get('exif.settings');
        $shouldUpdateMetadata = $config->get('update_metadata');
        if (!isset($shouldUpdateMetadata)) {
            $shouldUpdateMetadata = TRUE;
        }
        $inserting = !isset($entity->original);
        if ($inserting || $shouldUpdateMetadata) {
            $exifContentHandler = new ExifContent();
            $exifContentHandler->checkTitle($entityType, $entity);
        }
    }
}