(function () {

    const STORAGE_KEY = "codex-script-override";
    const DEFAULT_SCRIPT_SRC = "https://codexfit-api-assets.s3.amazonaws.com/release/latest/main.js";

    const storedOverride = localStorage.getItem(STORAGE_KEY);
    const overrideSrc = window?.CODEX_SCRIPT_OVERRIDE || storedOverride;
    const scriptSrc = overrideSrc || DEFAULT_SCRIPT_SRC;

    if(window) {
        window.codexBootstrap = {};
        window.codexBootstrap.loaded = false;
        window.codexBootstrap.hasOverride = !!storedOverride;
        window.codexBootstrap.setOverride = function(override) {
            localStorage.setItem(STORAGE_KEY, override);
            window.codexBootstrap.hasOverride = true;
        }
        window.codexBootstrap.clearOverride = function() {
            localStorage.removeItem(STORAGE_KEY);
            window.codexBootstrap.hasOverride = false;
        }
    }

    // ---- LOGGING ----
    console.log(
        `[CodexFit Bootstrap] Using ${overrideSrc ? "override" : "default"} script:`,
        scriptSrc
    );

    // ---- PREVENT DUPLICATE LOADS ----
    if (document.querySelector('script[data-codex-bootstrap="true"]')) {
        console.warn("[CodexFit Bootstrap] Script already loaded, skipping...");
        return;
    }


    const startTime = performance.now();
    // ---- ATTACH SCRIPT ----
    const script = document.createElement("script");
    script.src = scriptSrc;
    script.async = true;
    script.dataset.codexBootstrap = "true";

    script.onload = () => console.log("[CodexFit Bootstrap] Script loaded successfully in", Math.round(performance.now() - startTime, 0), "ms");
    script.onerror = (err) => console.error("[CodexFit Bootstrap] Failed to load script in", Math.round(performance.now() - startTime, 0), "ms:", err);

    document.head.appendChild(script);
})();