import ifcopenshell.util.date


class Data:
    is_loaded = False
    work_plans = {}
    work_schedules = {}
    tasks = {}

    @classmethod
    def purge(cls):
        cls.is_loaded = False
        cls.work_plans = {}
        cls.work_schedules = {}
        cls.work_calendars = {}
        cls.tasks = {}

    @classmethod
    def load(cls, file):
        cls._file = file
        if not cls._file:
            return
        cls.load_work_plans()
        cls.load_work_schedules()
        cls.load_work_calendars()
        cls.load_tasks()
        cls.is_loaded = True

    @classmethod
    def load_work_plans(cls):
        cls.work_plans = {}
        for work_plan in cls._file.by_type("IfcWorkPlan"):
            data = work_plan.get_info()
            del data["OwnerHistory"]
            if data["Creators"]:
                data["Creators"] = [p.id() for p in data["Creators"]]
            data["CreationDate"] = ifcopenshell.util.date.ifc2datetime(data["CreationDate"])
            data["StartTime"] = ifcopenshell.util.date.ifc2datetime(data["StartTime"])
            if data["FinishTime"]:
                data["FinishTime"] = ifcopenshell.util.date.ifc2datetime(data["FinishTime"])
            cls.work_plans[work_plan.id()] = data

    @classmethod
    def load_work_schedules(cls):
        cls.work_schedules = {}
        for work_schedule in cls._file.by_type("IfcWorkSchedule"):
            data = work_schedule.get_info()
            del data["OwnerHistory"]
            if data["Creators"]:
                data["Creators"] = [p.id() for p in data["Creators"]]
            data["CreationDate"] = ifcopenshell.util.date.ifc2datetime(data["CreationDate"])
            data["StartTime"] = ifcopenshell.util.date.ifc2datetime(data["StartTime"])
            if data["FinishTime"]:
                data["FinishTime"] = ifcopenshell.util.date.ifc2datetime(data["FinishTime"])
            data["RelatedObjects"] = []
            for rel in work_schedule.Controls:
                for obj in rel.RelatedObjects:
                    if obj.is_a("IfcTask"):
                        data["RelatedObjects"].append(obj.id())
            cls.work_schedules[work_schedule.id()] = data

    @classmethod
    def load_work_calendars(cls):
        for work_calendar in cls._file.by_type("IfcWorkCalendar"):
            data = work_calendar.get_info()
            del data["OwnerHistory"]
            del data["WorkingTimes"]
            del data["ExceptionTimes"]
            cls.work_calendars[work_calendar.id()] = data

    @classmethod
    def load_tasks(cls):
        cls.tasks = {}
        for task in cls._file.by_type("IfcTask"):
            cls.tasks[task.id()] = {"Name": task.Name, "Identification": task.Identification or ""}