auth_steps.html

<html>

<head>
    <title>Spotify Backup Script - First Time Authentication</title>
</head>

<body>
    <h1>Spotify Backup Script - First Time Authentication</h1>
    <ol>
        <li>
            <p>
                Navigate to your Spotify Backup Script app via the
                <a href="https://developer.spotify.com/dashboard/applications">
                    Spotify App Dashboard.
                </a>
            </p>
        </li>
        <li>
            <p>
                Add the following URI to the 'Redirect URIs' field,
                found under "Edit Settings":
                <br />
                <code> <?= ScriptApp.getService().getUrl() ?> </code>
            </p>
            <p>
                For more information, see
                <a href="https://developer.spotify.com/documentation/general/guides/app-settings/">
                    Spotify's Development Guide.
                </a>
            </p>
        </li>
        <li>
            <p>
                Go to the following URL, log into the desired user's Spotify
                account, and approve access:
                <br />
                <a href="<?= generateAuthUrl() ?>" target="_blank">
                    <?= generateAuthUrl() ?>
                </a>
            </p>
        </li>
        <li>
            You should be redirected back to a success page on Google App Script.
        </li>
    </ol>
</body>

</html>