import json
import datetime
class ConfigParser(object):
    def __init__(self, filename):
        with open(filename, "r") as f:
            self.jsonContent = json.load(f)
        self.events = dict()
        self.settings = dict()

        self.__parseSettings()
        self.__parseEvents()
        self.__parseModuleSettings()
    
    def __parseModuleSettings(self):
        self.modules = self.jsonContent["modules"]

    def __parseSettings(self):
        self.settings = self.jsonContent["settings"]

    def __parseDateRange(self, val ):
        _from = self.__fromisoformat(val["from"])
        _to = self.__fromisoformat(val["to"])
        
        val["from"] = _from
        val["to"] = _to

    def __fromisoformat(self, val):
        d = val.split("-")
        if len(d) == 3:
            return datetime.date(year=int(d[0]), month=int(d[1]), day=int(d[2]))
        elif len(d) == 2:
            return datetime.date(year=self.settings["year"], month=int(d[0]), day=int(d[1]))


    def __parseEvents(self):
        self.events = self.jsonContent["events"]
        for key, val in self.events.items():
            dates = val["dates"]
            for ev in dates:
                self.__parseDateRange(ev)

    def printEvents(self):
        for key, val in self.events.items():
            dates = val["dates"]
            print("%s\n================" % (val["name"]) )
            for ev in dates:
                print("from: %s until: %s ---> %s" % (ev["from"], ev["to"], ev["name"]) )


    def getEvent(self, date, eventName=None):
        for key,val in self.events.items():
            if eventName:
                if key == eventName:
                    for d in val["dates"]:
                        _from  = d["from"]
                        _to = d["to"]
                        if date >= _from and date <= _to:
                            return (key, d)
            else:
                for d in val["dates"]:
                        _from  = d["from"]
                        _to = d["to"]
                        if date >= _from and date <= _to:
                            return (key, d)
            
        return None


if __name__ == "__main__":
    c = ConfigParser("test.json")
    startDate = datetime.date(2020,1,1)
    for i in range(0,366):
        d = startDate + datetime.timedelta(days=i)
        ev = c.getEvent(d)
        if ev: print(d, ev[0], ev[1]["name"])