<?php

namespace Yipresser\AdminOptimizer\Modules;

use Yipresser\AdminOptimizer\Base_Module;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Limit_Image_Size class
 */
class Limit_Image_Size extends Base_Module {
	const OPTION_NAME = 'adminoptim_limit_image_size';
	const MODULE_ID   = 'limit_image_size';
	const MODULE_SLUG = 'limit-image-size';

	const MENU_SLUG = 'adminoptimizer-limit-image-size';

	/**
	 * Start the engine running after the options are loaded.
	 */
	protected function init(): void {
		$this->settings = new Limit_Image_Size_Settings( $this->options );
		add_filter( 'wp_handle_upload_prefilter', [ $this, 'check_image_upload_size' ] );
	}

	/**
	 * Set default options for this module
	 *
	 * @return array<string,int>
	 */
	protected function get_default_options() {
		return [
			'file_limit' => 0,
			'max_width'  => 0,
			'max_height' => 0,
		];
	}

	/**
	 * Check image upload size
	 *
	 * @param array $file Uploaded file.
	 *
	 * @return array
	 */
	public function check_image_upload_size( $file ) {
		$file_limit = isset( $this->options['file_limit'] ) ? absint( $this->options['file_limit'] ) : 0;
		$max_width  = isset( $this->options['max_width'] ) ? absint( $this->options['max_width'] ) : 0;
		$max_height = isset( $this->options['max_height'] ) ? absint( $this->options['max_height'] ) : 0;

		if ( 0 === $file_limit && 0 === $max_width && 0 === $max_height ) {
			return $file;
		}

		$is_image = isset( $file['type'] ) && str_starts_with( $file['type'], 'image/' );
		if ( $is_image ) {
			$errors = [];

			if ( $file_limit > 0 && isset( $file['size'] ) && ( $file['size'] / 1024 ) > $file_limit ) {
				/* translators: %d: Maximum image upload size in kilobytes. */
				$errors[] = sprintf( __( 'Image files must be smaller than %dKB.', 'admin-optimizer' ), $file_limit );
			}

			if ( ( $max_width > 0 || $max_height > 0 ) && ! empty( $file['tmp_name'] ) ) {
				$dimensions = wp_getimagesize( $file['tmp_name'] );
				if ( false !== $dimensions ) {
					if ( $max_width > 0 && $dimensions[0] > $max_width ) {
						/* translators: %d: Maximum image width in pixels. */
						$errors[] = sprintf( __( 'Image width must not exceed %d pixels.', 'admin-optimizer' ), $max_width );
					}
					if ( $max_height > 0 && $dimensions[1] > $max_height ) {
						/* translators: %d: Maximum image height in pixels. */
						$errors[] = sprintf( __( 'Image height must not exceed %d pixels.', 'admin-optimizer' ), $max_height );
					}
				}
			}

			if ( ! empty( $errors ) ) {
				$file['error'] = implode( ' ', $errors );
			}
		}

		return $file;
	}
}