def getPlaylists():
    username = "" #request.args.get("username","")
    if "user" in session:
        username = session["user"]
    res = []
    if username:
        res = db.getPlaylists(username)
    return json.dumps(res)
def playlists():
    if "user" not in session:
        return redirect(url_for("login"))
    username = session["user"]
    playlists = {}
    if username:
        playlists = db.getPlaylists(username)
    return render_template("playlist.html",playlists=playlists)
def favorites():
    if "user" not in session:
        return redirect(url_for("login"))
    if request.method == "GET":
        username = session["user"]
        favorites = []
        playlists = []
        if username:
            favorites = db.getFavorites(username)
            playlists = db.getPlaylists(username)
        return render_template("favorites.html",favorites=favorites)
    else:
        button = request.form["button"]
        username = ""
        if "user" in session:
            username = session["user"]
        res = 0
        if (button == "Clear Favorites") and username:
            res = db.clearFavorites(username)
        error = ""
        if res == 0:
            error = "user does not exist"
        favorites = db.getFavorites(username)
        return render_template("favorites.html",favorites=favorites,error=error)