GI - extract wish history (node 14)

extract-wishes.js

const https = require('https')
const fs = require('fs');

const FEEDBACK_URL = "PLACE YOUR FEEDBACK URL HERE"
const PAGE_SIZE = 20;
const DELAY = 1000;
const GACHA_MAP = {
    "STANDARD": 200,
    "NOVICE": 100,
    "WEAPON": 302,
    "CHARACTER": 301
}
const GACHA_TYPE_NAME = process.argv[2];
const GACHA_TYPE = GACHA_MAP[process.argv[2]];
if (!GACHA_TYPE) {
    console.log("Invalid gacha type. Available types are:\n" + Object.keys(GACHA_MAP).map(e => "\t- " + e).join("\n"))
    process.exit(0);
}
const feedbackParams = new URLSearchParams(FEEDBACK_URL)
const queryParams = new URLSearchParams({
    "authkey_ver": "1",
    "sign_type": "2",
    "auth_appid": "webview_gacha",
    "init_type": "301",
    "gacha_id": "b8fd0d8a6c940c7a16a486367de5f6d2232f53",
    "lang": "en",
    "device_type": "pc",
    "game_version": feedbackParams.get("game_version"),
    "region": "os_euro",
    "authkey": feedbackParams.get("authkey"),
    "game_biz": "hk4e_global",
    "gacha_type": GACHA_TYPE,
    "page": 1,
    "size": PAGE_SIZE,
    "end_id": 0
});

const pages = {};
let page = 1;
let lastId = 0;

function getGachaLog() {
    const options = {
        hostname: 'hk4e-api-os.mihoyo.com',
        port: 443,
        path: `/event/gacha_info/api/getGachaLog?${queryParams.toString()}`,
        method: 'GET',
    }

    const req = https.request(options, res => {
        console.log(`statusCode: ${res.statusCode}`)
        let data = [];
        res.on('data', (chunk) => {
            data.push(chunk);
        })

        res.on('end', () => {
            const tmp = JSON.parse(Buffer.concat(data).toString());
            if (tmp.retcode !== 0 || tmp.message !== "OK" || typeof tmp.data !== "object") {
                throw ('you broke it');
            }
            
            pages[tmp.data.page] = tmp.data.list;
            page += 1;
            const n = tmp.data.list.length;
            lastId = n > 0 && n <= PAGE_SIZE ? tmp.data.list[n - 1].id : 0;
            queryParams.set('page', page);
            queryParams.set('end_id', lastId);

            if (page > 1 && lastId === 0) {
                console.log("Finished, saving to " + GACHA_TYPE_NAME + ".json");
                const combined = []
                for (p in pages) { Array.prototype.push.apply(combined, pages[p]); }
                fs.writeFile(`${GACHA_TYPE_NAME}.json`, JSON.stringify(combined, null, 2), (err) => {
                    console.log(err);
                });
            }
            else {
                console.log(`Receiving page ${page}... lastId ${lastId}`);
                setTimeout(getGachaLog, DELAY);
            }
        })
    })

    req.on('error', error => {
        console.error(error)
    })
    
    req.end();
}
getGachaLog();

Usage:

node extract-wishes.js [STANDARD/NOVICE/WEAPON/CHARACTER]

will create a json file for selected category

First you need to prepare feedback url from Paimon Menu -> Feedback -> copy url in opened browser and replace PLACE YOUR FEEDBACK URL HERE with your url