import json

def loadSession(file, playlist, abController):
    jsonStr = file.read()
    session = json.loads(jsonStr)

    playlist.clear()
    abController.clear()

    for entry in session:
        songPath = entry["path"]
        abLimits = entry["ab_limits"]
        playlist.addSong(songPath)

        if abLimits is not None:
            for l in abLimits:
                abController.storeLimits(l[0], l[1], songPath)
        
def saveSession(file, playlist, abController):
    songs = playlist.getSongs()
    session = list()

    for s in songs:
        entry = {
            "path": s,
            "ab_limits" : abController.getStoredLimits(s)
        }
        session.append(entry)

    file.write(json.dumps(session))