File upload-subdir.php

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<?php

namespace SIW;

/**
 * Class om upload subdirectory te zetten op basis van content en bestandstype
 * 
 * @copyright   2019 SIW Internationale Vrijwilligersprojecten
 * @since       3.0.0
 * 
 * @todo subdir ipv dir
 */
class Upload_Subdir {

    /**
     * Init
     */
    public static function init() {
        $self = new self();
        add_filter( 'wp_handle_sideload_prefilter', [ $self, 'add_upload_subdir_filter'] );
        add_filter( 'wp_handle_upload_prefilter', [ $self, 'add_upload_subdir_filter'] );
        add_filter( 'wp_handle_upload', [ $self, 'remove_upload_subdir_filter'] );
    }

    /**
     * Voegt filter toe
     *
     * @param array $file
     * @return array
     */
    public function add_upload_subdir_filter( array $file ) {
        add_filter( 'upload_dir', [ $this, 'set_upload_subdir'] );
        return $file;
    }

    /**
     * Verwijdert filter weer
     *
     * @param array $fileinfo
     * @return array
     */
    public function remove_upload_subdir_filter( array $fileinfo ) {
        remove_filter( 'upload_dir', [ $this, 'set_upload_subdir'] );
        return $fileinfo;
    }

    /**
     * Bepaal upload dir
     *
     * @param array $path
     * @return array
     */
    public function set_upload_subdir( array $path ) {

        /* Afbreken bij een fout */
        if ( ! empty( $path['error'] ) ) {
            return $path;
        }

        /**
         * Zet upload dir op basis van:
         * 
         * - Extensie
         * - Post type
         */
        $subdir =
            $this->get_extension_subdir() ??
            $this->get_post_type_subdir() ??
            null;

        /**
         * Custom upload directory
         *
         * @param string $custom_dir
         */
        $subdir = apply_filters( 'siw_upload_subdir', $subdir );

        // Als er een 
        if ( null !== $subdir ) {
            $subdir = '/'. $subdir;

            $path['path']    = str_replace( $path['subdir'], '', $path['path'] ); //TODO: wp_normalize_path
            $path['url']     = str_replace( $path['subdir'], '', $path['url'] );
            $path['subdir']  = $subdir;
            $path['path']   .= $subdir;
            $path['url']    .= $subdir;
        }
        
        return $path;
    }

    /**
     * Bepaal subdirectory op basis van post type
     *
     * @return string
     */
    protected function get_post_type_subdir() {
        $post_id = isset( $_POST['post_id'] ) ? intval( $_POST['post_id'] ): null;
        if ( null === $post_id ) {
            return null;
        }
        $post_type = get_post_type( $post_id );

        //TODO: filter uit content type
        $cpt_upload_subdirs = [
            'siw_tm_country' => 'op-maat',
            'siw_tm_story'   => 'ervaringen',
        ];

        /**
         * Upload subdir
         * @param array $cpt_upload_dirs
         */
        $cpt_upload_subdirs = apply_filters( 'siw_cpt_upload_subdirs', $cpt_upload_subdirs );

        return $cpt_upload_subdirs[ $post_type ] ?? null;
    }

    /**
     * Bepaal subdirectory op basis van extensie
     *
     * @return string
     */
    protected function get_extension_subdir() {
        $name = isset( $_POST['name'] ) ? sanitize_title( $_POST['name'] ): null;
        if ( null === $name ) {
            return null;
        }
        $extension = pathinfo( $name, PATHINFO_EXTENSION );

        $extension_subdirs = [
            'pdf' => 'documenten',
        ];
        return $extension_subdirs[ $extension ] ?? null;
    }
}

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