<?php

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namespace ImageOptimization\Modules\Backups\Classes;

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use ImageOptimization\Classes\Async_Operation\{

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Async_Operation,

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Async_Operation_Hook,

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Async_Operation_Queue,

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};

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use ImageOptimization\Classes\Image\{

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Image_Meta,

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Image_Query_Builder,

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Image_Status

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};

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use Throwable;

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if ( ! defined( 'ABSPATH' ) ) {

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exit; // Exit if accessed directly.

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}

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class Restore_Images {

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private const CHUNK_SIZE = 100;

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/**

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* Schedules a single restoring operation.

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*

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* @param int $image_id

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* @return void

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* @throws Throwable

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* @throws \ImageOptimization\Classes\Async_Operation\Exceptions\Async_Operation_Exception

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*/

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public static function schedule_single_restoring( int $image_id ): void {

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$meta = new Image_Meta( $image_id );

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try {

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$meta

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->set_status( Image_Status::RESTORING_IN_PROGRESS )

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->save();

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Async_Operation::create(

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Async_Operation_Hook::RESTORE_SINGLE_IMAGE,

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[ 'attachment_id' => $image_id ],

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Async_Operation_Queue::RESTORE

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);

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} catch ( Throwable $t ) {

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$meta

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->set_status( Image_Status::RESTORING_FAILED )

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->save();

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throw $t;

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}

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}

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/**

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* Schedules restoring operations for all valid images with backups created.

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*

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* @param array $image_ids

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*

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* @return void

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*/

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public static function find_and_schedule_restoring( array $image_ids = [] ): void {

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$query = ( new Image_Query_Builder() )

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->return_images_only_with_backups();

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if ( ! empty( $image_ids ) ) {

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$query->set_image_ids( $image_ids );

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}

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$query = $query->execute();

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$attachment_ids = $query->posts;

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$chunks = array_chunk( $attachment_ids, self::CHUNK_SIZE );

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foreach ( $chunks as $chunk ) {

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try {

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Async_Operation::create(

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Async_Operation_Hook::RESTORE_MANY_IMAGES,

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[ 'attachment_ids' => $chunk ],

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Async_Operation_Queue::RESTORE

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);

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self::mark_chunk_as_in_progress( $chunk );

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} catch ( Throwable $t ) {

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self::fail_restoring_for_chunk( $chunk );

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}

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}

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}

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/**

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* Updates chunk images optimization status to in-progress.

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*

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* @param int[] $chunk

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* @return void

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*/

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private static function mark_chunk_as_in_progress( array $chunk ) {

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foreach ( $chunk as $image_id ) {

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( new Image_Meta( $image_id ) )

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->set_status( Image_Status::RESTORING_IN_PROGRESS )

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->save();

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}

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}

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/**

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* Updates chunk images optimization status to failed.

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*

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* @param int[] $chunk

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* @return void

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*/

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private static function fail_restoring_for_chunk( array $chunk ) {

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foreach ( $chunk as $image_id ) {

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( new Image_Meta( $image_id ) )

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->set_status( Image_Status::RESTORING_FAILED )

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->save();

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}

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}

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}

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