# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
# Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from AlgorithmImports import *
from HistoryAlgorithm import *

### <summary>
### The algorithm creates new indicator value with the existing indicator method by Indicator Extensions
### Demonstration of using the external custom data to request the IBM and SPY daily data
### </summary>
### <meta name="tag" content="using data" />
### <meta name="tag" content="using quantconnect" />
### <meta name="tag" content="custom data" />
### <meta name="tag" content="indicators" />
### <meta name="tag" content="indicator classes" />
### <meta name="tag" content="plotting indicators" />
### <meta name="tag" content="charting" />
class CustomDataIndicatorExtensionsAlgorithm(QCAlgorithm):

 # Initialize the data and resolution you require for your strategy
 def initialize(self):

 self.set_start_date(2014,1,1)
 self.set_end_date(2018,1,1)
 self.set_cash(25000)

 self.ibm = 'IBM'
 self.spy = 'SPY'

 # Define the symbol and "type" of our generic data
 self.add_data(CustomDataEquity, self.ibm, Resolution.DAILY)
 self.add_data(CustomDataEquity, self.spy, Resolution.DAILY)

 # Set up default Indicators, these are just 'identities' of the closing price
 self.ibm_sma = self.sma(self.ibm, 1, Resolution.DAILY)
 self.spy_sma = self.sma(self.spy, 1, Resolution.DAILY)

 # This will create a new indicator whose value is sma_s_p_y / sma_i_b_m
 self.ratio = IndicatorExtensions.over(self.spy_sma, self.ibm_sma)

 # Plot indicators each time they update using the PlotIndicator function
 self.plot_indicator("Ratio", self.ratio)
 self.plot_indicator("Data", self.ibm_sma, self.spy_sma)

 # OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here.
 def on_data(self, data):

 # Wait for all indicators to fully initialize
 if not (self.ibm_sma.is_ready and self.spy_sma.is_ready and self.ratio.is_ready): return
 if not self.portfolio.invested and self.ratio.current.value > 1:
 self.market_order(self.ibm, 100)
 elif self.ratio.current.value < 1:
 self.liquidate()