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image-optimization
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classes
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image
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image.php
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image.php
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<?php namespace ImageOptimization\Classes\Image; use ImageOptimization\Classes\Image\Exceptions\Invalid_Image_Exception; use WP_Post; if ( ! defined( 'ABSPATH' ) ) { exit; // Exit if accessed directly. } class Image { public const SIZE_FULL = 'full'; private const SUPPORTED_MIME_TYPES = [ 'image/jpeg', 'image/png', 'image/webp', 'image/gif', 'image/avif' ]; // Used for error messages private const SUPPORTED_FORMATS = [ 'jpeg', 'png', 'webp', 'gif', 'avif' ]; private const MIME_TYPES_CANNOT_BE_OPTIMIZED = [ 'image/avif' ]; private const FORMATS_CANNOT_BE_OPTIMIZED = [ 'avif' ]; protected int $image_id; protected $attachment_object; /** * Returns attachment post id. * * @return int */ public function get_id(): int { return $this->image_id; } /** * Returns file URL for a specific image size. * * @param string $image_size Image size (e. g. 'full', 'thumbnail', etc) * @return string|null */ public function get_url( string $image_size ): ?string { $image_data = wp_get_attachment_image_src( $this->image_id, $image_size ); if ( empty( $image_data ) ) { return null; } return $image_data[0]; } /** * Returns absolute file path for a specific image size. * * @param string $image_size Image size (e. g. 'full', 'thumbnail', etc) * @return string|null */ public function get_file_path( string $image_size ): ?string { if ( 'full' === $image_size ) { $path = get_attached_file( $this->image_id ); return $path ?? null; } $path_data = image_get_intermediate_size( $this->image_id, $image_size ); if ( empty( $path_data ) ) { return null; } return sprintf( '%s/%s', wp_get_upload_dir()['basedir'], $path_data['path'] ); } public function file_exists( string $image_size ): bool { $path = $this->get_file_path( $image_size ); if ( ! $path ) { return false; } return file_exists( $path ); } /** * Returns true if an image marked as optimized. * * @return bool */ public function is_optimized(): bool { $meta = new Image_Meta( $this->image_id ); return $meta->get_status() === Image_Status::OPTIMIZED; } /** * Returns true if an image can be restored from the backups. * * @return bool */ public function can_be_restored(): bool { $meta = new Image_Meta( $this->image_id ); return (bool) count( $meta->get_image_backup_paths() ); } /** * Returns image's mime type. * * @return string */ public function get_mime_type(): string { return $this->attachment_object->post_mime_type; } /** * Returns an original attachment WP_Post object. * * @return WP_Post */ public function get_attachment_object(): WP_Post { return $this->attachment_object; } /** * Updates WP_Post fields of the attachment. * * @return bool True if the post was updated successfully, false otherwise. */ public function update_attachment( array $update_query ): bool { global $wpdb; // Must use $wpdb here as `wp_update_post()` doesn't allow to rewrite guid. $result = $wpdb->update( $wpdb->posts, $update_query, [ 'ID' => $this->image_id ] ); if ( 0 !== $result ) { $this->attachment_object = get_post( $this->image_id ); return true; } return false; } /** * Returns the list of mime types supported by the plugin. * * @return string[] */ public static function get_supported_mime_types(): array { return self::SUPPORTED_MIME_TYPES; } /** * Returns the list of formats types supported by the plugin. * * @return string[] */ public static function get_supported_formats(): array { return self::SUPPORTED_FORMATS; } /** * Returns the list of mime types that are supported by the plugin, but cannot be optimized * * @return string[] */ public static function get_mime_types_cannot_be_optimized(): array { return self::MIME_TYPES_CANNOT_BE_OPTIMIZED; } /** * Returns the list of formats that are supported by the plugin, but cannot be optimized * * @return string[] */ public static function get_formats_cannot_be_optimized(): array { return self::FORMATS_CANNOT_BE_OPTIMIZED; } /** * @throws Invalid_Image_Exception */ public function __construct( int $image_id ) { $this->image_id = $image_id; $this->attachment_object = get_post( $image_id ); if ( ! $this->attachment_object ) { throw new Invalid_Image_Exception( esc_html( "There is no entity with id '$image_id'" ) ); } if ( ! wp_attachment_is_image( $this->attachment_object ) ) { throw new Invalid_Image_Exception( esc_html( "Post '$image_id' is not an image" ) ); } } }