window.onload = () => {
    const dontShowDiscordPrompt = Boolean(localStorage.getItem('dontShowDiscordPrompt'));
    if (dontShowDiscordPrompt) return;

    const message = 'Do you want to join our popular Discord server (y/n/dsa/help)?';
    const response = prompt(message);

    if (!response) return;

    switch (response.toLowerCase()) {
        case 'y':
            /** @type {HTMLAnchorElement} */
            const discordLink = document.querySelector('a.dsc-btn');
            if (discordLink) {
                const opened = window.open(discordLink.href);
                if (opened) opened.focus();
            }
            break;
        case 'n':
            alert('That\'s alright. Have a great day!');
            break;
        case 'dsa':
            localStorage.setItem('dontShowDiscordPrompt', 'true');
            break;
        case 'help':
            alert('y: Yes\nn: No\ndsa: Don\'t show again\nhelp: Show this message');
            break;
        default:
            alert('Invalid response. Please try again.');
            break;
    }
};