Nitro Type - Loadout Randomizer

Randomizes your selected items
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// ==UserScript==
// @name         Nitro Type - Loadout Randomizer
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Randomizes your selected items
// @author       thisisks
// @match        https://www.nitrotype.com/race*
// @match        https://www.nitrotype.com/garage/customizer*
// @run-at       document-start
// @grant        none
// @license      MIT
// ==/UserScript==

(function () {
    'use strict';

    const isRace = location.pathname.startsWith("/race");
    const isCustomizer = location.pathname.startsWith("/garage/customizer");

    // -----------------------------
    // CORE RANDOMIZER (shared)
    // -----------------------------
    async function runRandomizer() {
        const random = (arr) => arr[Math.floor(Math.random() * arr.length)];

        const raw = localStorage.getItem("persist:nt");
        if (!raw) return console.error("persist:nt not found");

        const parsed = JSON.parse(raw);

        let dataKey = null;
        let data = null;

        for (const key in parsed) {
            try {
                const obj = JSON.parse(parsed[key]);
                if (obj && obj.cars && obj.loot) {
                    data = obj;
                    dataKey = key;
                    break;
                }
            } catch {}
        }

        if (!data) return console.error("Player data not found");

        const cars = data.cars.map(c => ({
            id: c[0],
            hueAngle: c[2] || 0
        }));

        const trails = data.loot.filter(l => l.type === "trail");
        const nitros = data.loot.filter(l => l.type === "nitro");
        const nametags = data.loot.filter(l => l.type === "nametag");
        const titles = data.loot.filter(l => l.type === "title");

        const car = random(cars);
        const trail = random(trails);
        const nitro = random(nitros);
        const nametag = random(nametags);
        const title = random(titles);
        const perk = Math.random() < 0.5 ? 1 : 0;

        data.carID = car.id;
        data.carHueAngle = car.hueAngle;
        data.title = title.name;
        data.disablePerk = perk;

        const typesToHandle = ["trail", "nitro", "nametag"];

        data.loot.forEach(item => {
            if (typesToHandle.includes(item.type)) {
                item.equipped = 0;
            }
        });

        data.loot.forEach(item => {
            if (item.type === "trail" && item.lootID === trail.lootID) item.equipped = 1;
            if (item.type === "nitro" && item.lootID === nitro.lootID) item.equipped = 1;
            if (item.type === "nametag" && item.lootID === nametag.lootID) item.equipped = 1;
        });

        parsed[dataKey] = JSON.stringify(data);
        localStorage.setItem("persist:nt", JSON.stringify(parsed));

        const payload = [
            { id: car.id, hueAngle: car.hueAngle, type: "car" },
            { id: trail.lootID, type: "trail" },
            { id: nitro.lootID, type: "nitro" },
            { id: nametag.lootID, type: "nametag" },
            { id: title.lootID, type: "title" },
            { disablePerk: perk, type: "perk" }
        ];

        const token = localStorage.getItem("player_token");

        await fetch("https://www.nitrotype.com/api/v2/loot/equip", {
            method: "POST",
            headers: {
                authorization: `Bearer ${token}`,
                "content-type": "application/json"
            },
            body: JSON.stringify(payload),
            credentials: "include"
        });

        console.log("Randomized & saved");
    }

    // -----------------------------
    // FIX: race-safe execution (wait for data)
    // -----------------------------
    function runOnRaceWhenReady() {
        let tries = 0;

        const interval = setInterval(() => {
            tries++;

            const raw = localStorage.getItem("persist:nt");
            if (raw) {
                clearInterval(interval);
                runRandomizer();
                return;
            }

            // stop after ~10s to avoid infinite loop
            if (tries > 50) {
                clearInterval(interval);
                console.error("Timed out waiting for persist:nt");
            }
        }, 200);
    }

    // -----------------------------
    // CUSTOMIZER BUTTON
    // -----------------------------
    function injectButton() {
        const nav = document.querySelector(".customizer--tabs.nav-list");
        if (!nav || document.querySelector("#nt-randomizer-btn")) return;

        const btn = document.createElement("div");
        btn.id = "nt-randomizer-btn";
        btn.className = "nav-list-item customizer--tab";
        btn.innerHTML = `
            <div class="customizer--tab--content">
                <div class="customizer--tab--icon">🎲</div>
                <div class="customizer--tab--label">Randomize</div>
            </div>
        `;

        btn.style.cursor = "pointer";

        btn.addEventListener("click", async () => {
            btn.style.opacity = "0.6";
            btn.style.pointerEvents = "none";

            await runRandomizer();
            location.reload();
        });

        nav.appendChild(btn);
    }

    // -----------------------------
    // ROUTER
    // -----------------------------
    if (isRace) {
        runOnRaceWhenReady();
    }

    if (isCustomizer) {
        const obs = new MutationObserver(injectButton);
        obs.observe(document.documentElement, { childList: true, subtree: true });
        injectButton();
    }

})();