File woocommerce/import/product-image.php

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<?php

namespace SIW\WooCommerce\Import;

use SIW\Attachment;
use SIW\Data\Country;
use SIW\Data\Work_Type;
use SIW\Plato\Download_File as Plato_Download_File;

/**
 * Selecteren van afbeelding voor een Groepsproject
 *
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Product_Image {

    /**
     * Minimale breedte voor afbeeldingen
     *
     * @var int
     */
    const MIN_IMAGE_WIDTH = 600;

    /**
     * Minimale hoogte voor afbeeldingen
     *
     * @var int
     */
    const MIN_IMAGE_HEIGHT = 600;

    /**
     * Subdirectory voor projectfoto's
     *
     * @var string
     */
    protected $subdir = 'groepsprojecten/projectfotos';

    /**
     * Haal projectafbeelding (uit Plato) op
     *
     * @param array $identifier
     * @param string $filename_base
     * @param string $project_id
     * 
     * @return int|null
     */
    public function get_project_image( array $identifiers, string $filename_base, string $project_id ) {

        // Kijk of er al een attachment voor 1 van de identifiers is
        $project_images = get_posts([
            'post_type'   => 'attachment',
            'post_status' => 'inherit',
            'fields'      => 'ids',
            'meta_query'  => [
                [
                    'key'     => 'plato_document_identifier',
                    'value'   => $identifiers,
                    'compare' => 'IN'
                ],
            ],
        ]);

        if ( sizeof( $project_images ) > 0 ) {
            return $project_images[ array_rand( $project_images, 1 ) ];
        }

        //Als er nog geen attachment is probeer er dan 1 te downloaden
        $document_import = new Plato_Download_File;
        $attachment = new Attachment( 'image', $this->subdir );
        $attachment->set_minimum_resolution( self::MIN_IMAGE_WIDTH, self::MIN_IMAGE_HEIGHT );

        foreach ( $identifiers as $identifier ) {
            $temp_file = $document_import->download( $identifier, 'jpg' );

            if ( null !== $temp_file ) {
                $attachment_id = $attachment->add( $temp_file, $filename_base, 'Projectfoto' );
                if ( false !== $attachment_id ) {
                    update_post_meta( $attachment_id, 'plato_document_identifier', $identifier );
                    update_post_meta( $attachment_id, 'plato_project_id', $project_id );
                    //wp_update_post() post parent zetten?
                    return $attachment_id;
                }
            }
        }
        return null;
    }

    /**
     * Zoekt stockfoto op basis van land en soort werk
     *
     * @param Country $country
     * @param Work_Type[] $work_types
     * @return int|null
     */
    public function get_stock_image( Country $country, array $work_types ) {

        $continent_slug = $country->get_continent()->get_slug();
        $country_slug = $country->get_slug();
        foreach ( $work_types as $work_type ) {
            $work_type_slugs[] = $work_type->get_slug();
        }

        //Haal taxonomy queries op
        $tax_queries = $this->get_tax_queries( $continent_slug, $country_slug, $work_type_slugs );

        // Selecteer stock image
        foreach ( $tax_queries as $tax_query ) {

            $posts = get_posts( [
                'post_type'   => 'attachment',
                'post_status' => 'inherit',
                'fields'      => 'ids',
                'tax_query'   => $tax_query,
            ]);

            //Random afbeelding kiezen als er resultaten zijn
            if ( sizeof( $posts ) > 0 ) {
                return $posts[ array_rand( $posts, 1 ) ];
            }
        }
        return null;
    }

    /**
     * Maakt taxonomy queries aan
     *
     * @param string $continent
     * @param string $country
     * @param array $work_types
     *
     * @return array
     */
    protected function get_tax_queries( string $continent, string $country, array $work_types ) {

        //Maak subqueries aan
        $country_query = [
            'taxonomy' => 'siw_attachment_country',
            'field'    => 'slug',
            'terms'    => $country,
        ];
        $continent_query = [
            'taxonomy' => 'siw_attachment_continent',
            'field'    => 'slug',
            'terms'    => $continent,
        ];
        $work_type_query = [
            'taxonomy' => 'siw_attachment_work_type',
            'field'    => 'slug',
            'terms'    => $work_types,
        ];

        /*
        * Maak queries aan door subqueries te combineren
        */

        //Land en soort werk
        $tax_queries[] = [
            'relation' => 'AND',
            $country_query,
            $work_type_query,
        ];

        //Land
        $tax_queries[] = [
            'relation' => 'AND',
            $country_query,
        ];

        //Continent en soort werk
        $tax_queries[] = [
            'relation' => 'AND',
            $continent_query,
            $work_type_query,
        ];

        //Continent
        $tax_queries[] = [
            'relation' => 'AND',
            $continent_query,
        ];

        return $tax_queries;
    }
}

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