from fireworks.utilities.fw_serializers import FWSerializable, recursive_deserialize, recursive_serialize, serialize_fw

__author__ = "Anubhav Jain"
__copyright__ = "Copyright 2014, The Materials Project"
__maintainer__ = "Anubhav Jain"
__email__ = "ajain@lbl.gov"
__date__ = "Feb 10, 2014"


class BackgroundTask(FWSerializable):
    _fw_name = "BackgroundTask"

    def __init__(self, tasks, num_launches=0, sleep_time=60, run_on_finish=False):
        """
        Args:
            tasks [Firetask]: a list of Firetasks to perform
            num_launches (int): the total number of times to run the process (0=infinite)
            sleep_time (int): sleep time in seconds between background runs
            run_on_finish (bool): always run this task upon completion of Firework.
        """
        self.tasks = tasks if isinstance(tasks, (list, tuple)) else [tasks]
        self.num_launches = num_launches
        self.sleep_time = sleep_time
        self.run_on_finish = run_on_finish

    @recursive_serialize
    @serialize_fw
    def to_dict(self):
        return {
            "tasks": self.tasks,
            "num_launches": self.num_launches,
            "sleep_time": self.sleep_time,
            "run_on_finish": self.run_on_finish,
        }

    @classmethod
    @recursive_deserialize
    def from_dict(cls, m_dict):
        return BackgroundTask(m_dict["tasks"], m_dict["num_launches"], m_dict["sleep_time"], m_dict["run_on_finish"])
