// legacy-redirect.js

(function () {
    const legacyURL = "http://www.veltron.net/legacy.html";

    const ua = navigator.userAgent || "";

    // --- Target DSi / 3DS specifically ---
    const isDSiOr3DS =
    ua.includes("Nintendo DSi") ||
    ua.includes("Nintendo 3DS");

    // --- Optional broader legacy browser checks ---
    const isOldIE =
    ua.includes("MSIE") || ua.includes("Trident/");

    const isOperaMini =
    ua.includes("Opera Mini");

    // Very old / limited mobile browsers fallback (optional)
    const isVeryOldMobile =
    /Android 2|Android 3|Symbian|webOS|BlackBerry/i.test(ua);

    // Combine rules
    const isLegacyBrowser =
    isDSiOr3DS || isOldIE || isOperaMini || isVeryOldMobile;

    // Prevent redirect loop
    const alreadyOnLegacy =
    window.location.href.startsWith(legacyURL);

    // Optional override (useful for testing)
    const bypass =
    new URLSearchParams(window.location.search).has("noredirect");

    if (isLegacyBrowser && !alreadyOnLegacy && !bypass) {
        window.location.href = legacyURL;
    }
})();