A small script to extract fgo master data from kazemai

kazemai.py

import lzstring
import requests

KAZEMAI_DATA = "https://kazemai.github.io/fgo-vz/common/js/master.js"

print("Downloading master.js")
r = requests.get(KAZEMAI_DATA)
master_data = r.text.splitlines()[0][65:-4]
with open("master.txt", "w", encoding="utf-8") as fp:
    fp.write(master_data)

master_bytes = bytes.fromhex(master_data)
master_string = ""
for i in range(len(master_bytes) // 2):
    master_string += chr(master_bytes[i * 2] | master_bytes[i * 2 + 1] << 8)

print("LZString decompress")
lz_string = lzstring.LZString()
mstTxt = lz_string.decompress(master_string)

with open("kazemai.json", "w", encoding="utf-8") as fp:
    fp.write(mstTxt)

Browse the data here https://fgo.square.ovh/kazemai/