Get ladder data for a player in Fxp GunZ

fxp.mjs

#!/usr/bin/env -S node --experimental-fetch --no-warnings --tls-max-v1.3

import path from 'node:path';
import process from 'node:process';
import url from 'node:url';

const __filename = path.resolve(url.fileURLToPath(import.meta.url));

/**
 * @typedef {Object} RankingQuery
 * @property {string} ctg
 * @property {number} page
 * @property {string} keyword
 * @property {number?} amount
 *
 * @typedef {Object} PlayerLadderInfo
 * @property {number} rank
 * @property {string} name
 * @property {number} score
 * @property {number} wins
 * @property {number} losses
 * @property {string} tierUrl
 */

/**
 * @param {string!} name
 * @returns {Promise<number>}
 */
async function showPlayerLadderInfo(name) {
    /** @type {RankingQuery} */
    const body = {
        ctg: 'ladder',
        keyword: name,
        page: 0, // required - '0' fetches results from every page
    };

    try {
        const response = await fetch(
            'https://www.fxpgunz.com/api/app/rankings',
            {
                method: 'POST',
                mode: 'cors',
                redirect: 'follow',
                referrerPolicy: 'strict-origin-when-cross-origin',
                headers: {
                    'Accept': 'application/json',
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify(body),
            }
        )

        /** @type {PlayerLadderInfo[]} */
        const data = await response.json();

        const player =
            data.find(
                entry => entry?.name.toLowerCase() === name.toLowerCase(),
            ) ?? 'Not found.';

        console.dir(player);
    } catch (error) {
        console.error(error);
        return 1;
    }

    return 0;
}

/**
 * @returns {never}
 */
function usage() {
    console.log(`Usage: ${process.argv.slice(-2).join(" ")} <character name>`);
    process.exit(2);
}

/**
 * @param {readonly string[]} args
 * @returns {Promise<number>}
 */
async function main(args) {
    if (args.length != 1) usage();

    const name = args[0];
    return await showPlayerLadderInfo(name);
}

if (process.argv[1] === __filename) {
    // Temporary workaround - we cannot pass a custom agent to fetch() yet
    process.env.NODE_TLS_REJECT_UNAUTHORIZED = 0;

    process.exitCode = await main(process.argv.slice(2));
}