(function () {
    function getAuthToken() {
        try {
            var creds = JSON.parse(localStorage.getItem('jellyfin_credentials'));
            var server = creds && creds.Servers && creds.Servers[0];
            return (server && server.AccessToken) || null;
        } catch (e) {
            return null;
        }
    }

    function addButton() {
        if (document.getElementById('jellylms-remote-btn')) {
            return;
        }

        var btn = document.createElement('a');
        btn.id = 'jellylms-remote-btn';
        btn.href = '/JellyLms/RemoteControl';
        btn.title = 'Multi-room Remote';
        btn.textContent = '🔊';
        btn.style.cssText = 'position:fixed;bottom:20px;right:20px;width:48px;height:48px;' +
            'border-radius:50%;background:#00a4dc;color:#fff;display:flex;' +
            'align-items:center;justify-content:center;font-size:22px;' +
            'text-decoration:none;z-index:99999;box-shadow:0 2px 8px rgba(0,0,0,0.5);';
        document.body.appendChild(btn);
    }

    function init() {
        var token = getAuthToken();
        if (!token) {
            return;
        }

        fetch('/JellyLms/RemoteControl/Access', { headers: { 'X-Emby-Token': token } })
            .then(function (resp) {
                if (resp.ok) {
                    addButton();
                }
            })
            .catch(function () {});
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }
})();