import json


def tileset_info(filename):
    """
    Return a tileset info for this time interval
    """
    with open(filename, "r") as f:
        data = json.load(f)

        return {
            "min_pos": [0],
            "max_pos": [data["len"]],
            "max_width": data["len"],
            "start_value": data["start"],
            "end_value": data["end"],
        }