def page_type(content):
    """
    Evaluate the request content and identify the type of the page.

    Args:
        content (str): page content to analyse.

    Returns:
        "album" if a track list was detected.
        "discography" if a set of albums and tracks was found.
        "track" if the above do not apply but a Bandcamp page was still identified.
        "none" if the supplied page is not a Bandcamp page.
    """
    if "bandcamp.com" in content:
        if "Digital Album" and "track_list" in content:
            return "album"

        elif 'id="discography"' not in content:
            return "discography"

        else:
            return "track"

    else:
        return "none"