AnsPress_Uploader::image_submission()

	public static function image_submission() {
		$post_id = ap_sanitize_unslash( 'post_id', 'r' );

		if ( ! check_ajax_referer( 'media-upload', false, false ) || ! ap_user_can_upload( ) || empty( $_FILES['async-upload'] ) ) {
			ap_ajax_json( [
				'success' => false,
				'snackbar' => [
					'message' => __( 'You are not allowed to upload attachments.', 'anspress-question-answer' ),
				],
			] );
		}

		if ( ! empty( $post_id ) && ! ap_user_can_edit_post( $post_id ) ) {
			ap_ajax_json( [ 'success' => false ] );
		} else {
			$post_id = null;
		}

		$attachment_id = ap_upload_user_file( $_FILES['async-upload'], true, $post_id );

		if ( is_wp_error( $attachment_id ) ) {
			ap_ajax_json( [
				'success' => false,
				'snackbar' => [
					'message' => $attachment_id->get_error_message(),
				],
			] );
		}

		ap_ajax_json( array(
			'success'        => true,
			'attachment_url' => wp_get_attachment_url( $attachment_id ),
			'attachment_id'  => $attachment_id,
			'is_image'       => wp_attachment_is_image( $attachment_id ),
			'delete_nonce'   => wp_create_nonce( 'delete-attachment-' . $attachment_id ),
		) );
	}