class TransdimensionalTachyonContainmentField(QCAlgorithm):

    def Initialize(self):
        self.SetStartDate(2020, 3, 14)  # Set Start Date
        self.SetCash(100000)  # Set Strategy Cash
        
        custom_tickers = ['????????/IGLN.csv', '????????/SILVERPRICE.csv']
        
        for ticker in custom_tickers:
            self.AddData(CustomDropboxOHLC, ticker, Resolution.Daily)

    def OnData(self, data):
        '''OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here.
            Arguments:
                data: Slice object keyed by symbol containing the stock data
        '''

        # if not self.Portfolio.Invested:
        #    self.SetHoldings("SPY", 1)
        
class CustomDropboxOHLC(PythonData):
    '''IGLN.L Custom Data Class'''
    def GetSource(self, config, date, isLiveMode):
        source = f"https://www.dropbox.com/s/{config.Symbol.Value}?dl=1"
        return SubscriptionDataSource(source, SubscriptionTransportMedium.RemoteFile)


    def Reader(self, config, line, date, isLiveMode):
        if not (line.strip() and line[0].isdigit()): return None

        # New GoldPhys object
        ohlc = CustomDropboxOHLC()
        ohlc.Symbol = config.Symbol

        try:
            # Example File Format:
            # Date,       Open       High        Low       Close     Volume      
            # 2011-09-13  7792.9    7799.9     7722.65    7748.7    116534670    
            data = line.split(',')
            ohlc.Time = datetime.strptime(data[0], "%Y-%m-%d")
            ohlc.Value = data[4]
            ohlc["open"] = float(data[1])
            ohlc["high"] = float(data[2])
            ohlc["low"] = float(data[3])
            ohlc["close"] = float(data[4])
        

        except ValueError:
                # Do nothing
                return None

        return ohlc