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<?php
/**
 * Base WordPress Image Editor
 *
 * @package WordPress
 * @subpackage Image_Editor
 */

/**
 * Base image editor class from which implementations extend
 *
 * @since 3.5.0
 */
#[AllowDynamicProperties]
abstract class WP_Image_Editor {
	protected $file              = null;
	protected $size              = null;
	protected $mime_type         = null;
	protected $output_mime_type  = null;
	protected $default_mime_type = 'image/jpeg';
	protected $quality           = false;

// Deprecated since 5.8.1. See get_default_quality() below.
	protected $default_quality = 82;

/**
	 * Each instance handles a single file.
	 *
	 * @param string $file Path to the file to load.
	 */
	public function __construct( $file ) {
		$this->file = $file;
	}

/**
	 * Checks to see if current environment supports the editor chosen.
	 * Must be overridden in a subclass.
	 *
	 * @since 3.5.0
	 *
	 * @abstract
	 *
	 * @param array $args
	 * @return bool
	 */
	public static function test( $args = array() ) {
		return false;
	}

/**
	 * Checks to see if editor supports the mime-type specified.
	 * Must be overridden in a subclass.
	 *
	 * @since 3.5.0
	 *
	 * @abstract
	 *
	 * @param string $mime_type
	 * @return bool
	 */
	public static function supports_mime_type( $mime_type ) {
		return false;
	}

/**
	 * Loads image from $this->file into editor.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @return true|WP_Error True if loaded; WP_Error on failure.
	 */
	abstract public function load();

/**
	 * Saves current image to file.
	 *
	 * @since 3.5.0
	 * @since 6.0.0 The `$filesize` value was added to the returned array.
	 * @abstract
	 *
	 * @param string $destfilename Optional. Destination filename. Default null.
	 * @param string $mime_type    Optional. The mime-type. Default null.
	 * @return array|WP_Error {
	 *     Array on success or WP_Error if the file failed to save.
	 *
	 *     @type string $path      Path to the image file.
	 *     @type string $file      Name of the image file.
	 *     @type int    $width     Image width.
	 *     @type int    $height    Image height.
	 *     @type string $mime-type The mime type of the image.
	 *     @type int    $filesize  File size of the image.
	 * }
	 */
	abstract public function save( $destfilename = null, $mime_type = null );

/**
	 * Resizes current image.
	 *
	 * At minimum, either a height or width must be provided.
	 * If one of the two is set to null, the resize will
	 * maintain aspect ratio according to the provided dimension.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param int|null   $max_w Image width.
	 * @param int|null   $max_h Image height.
	 * @param bool|array $crop  {
	 *     Optional. Image cropping behavior. If false, the image will be scaled (default).
	 *     If true, image will be cropped to the specified dimensions using center positions.
	 *     If an array, the image will be cropped using the array to specify the crop location:
	 *
	 *     @type string $0 The x crop position. Accepts 'left' 'center', or 'right'.
	 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
	 * }
	 * @return true|WP_Error
	 */
	abstract public function resize( $max_w, $max_h, $crop = false );

/**
	 * Resize multiple images from a single source.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param array $sizes {
	 *     An array of image size arrays. Default sizes are 'small', 'medium', 'large'.
	 *
	 *     @type array ...$0 {
	 *         @type int        $width  Image width.
	 *         @type int        $height Image height.
	 *         @type bool|array $crop   Optional. Whether to crop the image. Default false.
	 *     }
	 * }
	 * @return array An array of resized images metadata by size.
	 */
	abstract public function multi_resize( $sizes );

/**
	 * Crops Image.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param int  $src_x   The start x position to crop from.
	 * @param int  $src_y   The start y position to crop from.
	 * @param int  $src_w   The width to crop.
	 * @param int  $src_h   The height to crop.
	 * @param int  $dst_w   Optional. The destination width.
	 * @param int  $dst_h   Optional. The destination height.
	 * @param bool $src_abs Optional. If the source crop points are absolute.
	 * @return true|WP_Error
	 */
	abstract public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false );

/**
	 * Rotates current image counter-clockwise by $angle.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param float $angle
	 * @return true|WP_Error
	 */
	abstract public function rotate( $angle );

/**
	 * Flips current image.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param bool $horz Flip along Horizontal Axis
	 * @param bool $vert Flip along Vertical Axis
	 * @return true|WP_Error
	 */
	abstract public function flip( $horz, $vert );

/**
	 * Streams current image to browser.
	 *
	 * @since 3.5.0
	 * @abstract
	 *
	 * @param string $mime_type The mime type of the image.
	 * @return true|WP_Error True on success, WP_Error object on failure.
	 */
	abstract public function stream( $mime_type = null );

/**
	 * Gets dimensions of image.
	 *
	 * @since 3.5.0
	 *
	 * @return int[] {
	 *     Dimensions of the image.
	 *
	 *     @type int $width  The image width.
	 *     @type int $height The image height.
	 * }
	 */
	public function get_size() {
		return $this->size;
	}

/**
	 * Sets current image size.
	 *
	 * @since 3.5.0
	 *
	 * @param int $width
	 * @param int $height
	 * @return true
	 */
	protected function update_size( $width = null, $height = null ) {
		$this->size = array(
			'width'  => (int) $width,
			'height' => (int) $height,
		);
		return true;
	}

/**
	 * Gets the Image Compression quality on a 1-100% scale.
	 *
	 * @since 4.0.0
	 *
	 * @return int Compression Quality. Range: [1,100]
	 */
	public function get_quality() {
		if ( ! $this->quality ) {
			$this->set_quality();
		}

return $this->quality;
	}

/**
	 * Sets Image Compression quality on a 1-100% scale.
	 *
	 * @since 3.5.0
	 *
	 * @param int $quality Compression Quality. Range: [1,100]
	 * @return true|WP_Error True if set successfully; WP_Error on failure.
	 */
	public function set_quality( $quality = null ) {
		// Use the output mime type if present. If not, fall back to the input/initial mime type.
		$mime_type = ! empty( $this->output_mime_type ) ? $this->output_mime_type : $this->mime_type;
		// Get the default quality setting for the mime type.
		$default_quality = $this->get_default_quality( $mime_type );

if ( null === $quality ) {
			/**
			 * Filters the default image compression quality setting.
			 *
			 * Applies only during initial editor instantiation, or when set_quality() is run
			 * manually without the `$quality` argument.
			 *
			 * The WP_Image_Editor::set_quality() method has priority over the filter.
			 *
			 * @since 3.5.0
			 *
			 * @param int    $quality   Quality level between 1 (low) and 100 (high).
			 * @param string $mime_type Image mime type.
			 */
			$quality = apply_filters( 'wp_editor_set_quality', $default_quality, $mime_type );

if ( 'image/jpeg' === $mime_type ) {
				/**
				 * Filters the JPEG compression quality for backward-compatibility.
				 *
				 * Applies only during initial editor instantiation, or when set_quality() is run
				 * manually without the `$quality` argument.
				 *
				 * The WP_Image_Editor::set_quality() method has priority over the filter.
				 *
				 * The filter is evaluated under two contexts: 'image_resize', and 'edit_image',
				 * (when a JPEG image is saved to file).
				 *
				 * @since 2.5.0
				 *
				 * @param int    $quality Quality level between 0 (low) and 100 (high) of the JPEG.
				 * @param string $context Context of the filter.
				 */
				$quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' );
			}

if ( $quality < 0 || $quality > 100 ) {
				$quality = $default_quality;
			}
		}

// Allow 0, but squash to 1 due to identical images in GD, and for backward compatibility.
		if ( 0 === $quality ) {
			$quality = 1;
		}

if ( ( $quality >= 1 ) && ( $quality <= 100 ) ) {
			$this->quality = $quality;
			return true;
		} else {
			return new WP_Error( 'inval