/*
 * 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.
 *
*/

using System;
using System.Linq;
using QuantConnect.Data;
using QuantConnect.Data.UniverseSelection;
using QuantConnect.Securities.Option;

namespace QuantConnect.Algorithm.CSharp
{
    /// <summary>
    /// Example demonstrating how to access to options history for a given underlying equity security.
    /// </summary>
    /// <meta name="tag" content="using data" />
    /// <meta name="tag" content="options" />
    /// <meta name="tag" content="filter selection" />
    /// <meta name="tag" content="history" />
    public class BasicTemplateOptionsHistoryAlgorithm : QCAlgorithm
    {
        public override void Initialize()
        {
            // this test opens position in the first day of trading, lives through stock split (7 for 1), and closes adjusted position on the second day
            SetStartDate(2015, 12, 24);
            SetEndDate(2015, 12, 24);
            SetCash(1000000);

            var option = AddOption("GOOG");
            // add the initial contract filter 
            option.SetFilter(-2, +2, TimeSpan.Zero, TimeSpan.FromDays(180));

            // set the pricing model for Greeks and volatility
            // find more pricing models https://www.quantconnect.com/lean/documentation/topic27704.html
            option.PriceModel = OptionPriceModels.CrankNicolsonFD();
            // set the warm-up period for the pricing model
            SetWarmup(TimeSpan.FromDays(4));
            // set the benchmark to be the initial cash
            SetBenchmark(d => 1000000);
        }

        /// <summary>
        /// Event - v3.0 DATA EVENT HANDLER: (Pattern) Basic template for user to override for receiving all subscription data in a single event
        /// </summary>
        /// <param name="slice">The current slice of data keyed by symbol string</param>
        public override void OnData(Slice slice)
        {
            if (IsWarmingUp) return;
            if (!Portfolio.Invested)
            {
                foreach (var chain in slice.OptionChains)
                {
                    var underlying = Securities[chain.Key.Underlying];
                    foreach (var contract in chain.Value)
                    {
                        Log(String.Format(@"{0},Bid={1} Ask={2} Last={3} OI={4} σ={5:0.000} NPV={6:0.000} Δ={7:0.000} Γ={8:0.000} ν={9:0.000} ρ={10:0.00} Θ={11:0.00} IV={12:0.000}",
                             contract.Symbol.Value,
                             contract.BidPrice,
                             contract.AskPrice,
                             contract.LastPrice,
                             contract.OpenInterest,
                             underlying.VolatilityModel.Volatility,
                             contract.TheoreticalPrice,
                             contract.Greeks.Delta,
                             contract.Greeks.Gamma,
                             contract.Greeks.Vega,
                             contract.Greeks.Rho,
                             contract.Greeks.Theta / 365.0m,
                             contract.ImpliedVolatility));
                    }
                }
            }
        }

        public override void OnSecuritiesChanged(SecurityChanges changes)
        {
            foreach (var change in changes.AddedSecurities)
            {
                // Only print options price
                if (change.Symbol.Value == "GOOG") continue;
                var history = History(change.Symbol, 10, Resolution.Minute);

                foreach (var data in history.OrderByDescending(x => x.Time).Take(3))
                {
                    Log($"History: {data.Symbol.Value}: {data.Time} > {data.Close}");
                }
            }
        }
    }
}