get-wish.py

import os
import subprocess
import json
import urllib
import urllib.request
import urllib.parse

API_HOST = "hk4e-api-os.hoyoverse.com" 

def get_wish_urls():
    result = []
    cmd = "find ~/Library/Containers/com.miHoYo.GenshinImpact/Data/Library/Caches/WebKit -type f -exec strings {} \; | grep e20190909gacha-v3 | egrep '(https.+?game_biz=)' | uniq | more"
    output = subprocess.check_output(cmd, shell=True)
    for line in output.splitlines():
        result.append(line)
    return result

def check_url(url) -> bool:
    uri = urllib.parse.urlparse(url)
    path = "event/gacha_info/api/getGachaLog"
    host = API_HOST
    fragment = ""
    query = urllib.parse.parse_qs(uri.query)
    query["lang"] = "en"
    query["gacha_type"] = "301"
    query["size"] = "5"
    query["lang"] = "en-us"
    query = urllib.parse.urlencode(query, doseq=True)
    url = uri.scheme.decode("utf-8") + "://" + API_HOST + "/" + path + "?" + query + "#" + fragment
    # print(url)
    try:
        response = urllib.request.urlopen(url, timeout=10)
        # parse json
        data = json.loads(response.read())
        # check error code
        if data["retcode"] == 0:
            return True
        return False
    except Exception as e:
        # print(e)
        return False

def main():
    urls = get_wish_urls()
    found = False
    for url in urls:
        if check_url(url):
            print("Found valid url: " + url.decode('utf-8'))
            # copy to clipboard, properly escaping the url
            cmd = f'echo "{url.decode("utf-8")}" | pbcopy'
            os.system(cmd)
            print("Copied to clipboard.")
            found = True
            break
    
    print("No valid url found.") if not found else None
    print("Done.")

if __name__ == "__main__":
    main()