get genshin gacha log url from cache

genshin-wish-history.php

<?php
/**
 * genshin-wish-history.php
 *
 * @see https://gist.github.com/MadeBaruna/1d75c1d37d19eca71591ec8a31178235
 * @see https://github.com/chillerlan/php-httpinterface
 *
 * @created      05.07.2023
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2023 smiley
 * @license      MIT
 */

use chillerlan\HTTP\Psr18\CurlClient;
use chillerlan\HTTP\Psr7\{Request, Uri};
use chillerlan\HTTP\Utils\QueryUtil;

require_once __DIR__.'/../vendor/autoload.php';

$args    = getopt('', ['china::']);
$dirName = 'Genshin Impact';
$apiHost = 'hk4e-api-os.hoyoverse.com';

if(isset($args['china'])){
	$dirName = '原神';
	$apiHost = 'hk4e-api.mihoyo.com';
}

// attempt to find log file
$logLocation = realpath(sprintf('%s/AppData/LocalLow/miHoYo/%s/output_log.txt', getenv('userprofile'), $dirName));

if(!$logLocation){
	throw new RuntimeException('cannot find log file');
}

// get game dir from log
$logData = file_get_contents($logLocation);

preg_match('#.:/.+/GenshinImpact_Data|YuanShen_Data#', $logData, $matches);

if(empty($matches)){
	throw new RuntimeException('cannot find cache directory');
}

// get cache file
#$cacheFile = sprintf('%s/webCaches/Cache/Cache_Data/data_2', $matches[0]); // <= Genshin 3.7
$cacheFile = sprintf('%s/webCaches/2.13.0.1/Cache/Cache_Data/data_2', $matches[0]); // Genshin 3.8

$cacheFile = realpath($cacheFile);

if(!$cacheFile){
	throw new RuntimeException('cannot find cache data file');
}

// get URLs from cache
$cacheData = file_get_contents($cacheFile);

preg_match_all('/https[^\x00\x01\s]+/', $cacheData, $matches);

if(empty($matches) || empty($matches[0])){
	throw new RuntimeException('cannot find URLs in cache');
}

$http = new CurlClient;

// check the gacha info URLs
foreach($matches[0] as $url){

	if(!str_contains($url, 'e20190909gacha-v2')){
		continue;
	}

	// test if the token is valid
	$test = (new Uri(QueryUtil::merge($url, ['lang' => 'en-us', 'gacha_type' => '301', 'size' => '5'])))
		->withHost($apiHost)
		->withPath('event/gacha_info/api/getGachaLog')
	;

	$request = (new Request('GET', $test))
		->withHeader('Accept', 'application/json')
	;

	$response = $http->sendRequest($request);

	if($response->getStatusCode() !== 200){
		sleep(1);

		continue;
	}

	echo $url;

	exit;
}

// search for gacha log URL
foreach($matches[0] as $url){

	if(!str_contains($url, 'event/gacha_info/api/getGachaLog')){
		continue;
	}

	$request = (new Request('GET', new Uri($url)))
		->withHeader('Accept', 'application/json')
	;

	$response = $http->sendRequest($request);

	if($response->getStatusCode() !== 200){
		sleep(1);

		continue;
	}

	echo $url;

	exit;
}