/*
 * 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;

namespace QuantConnect.Brokerages.InteractiveBrokers
{
    /// <summary>
    /// Provides the mapping between Lean symbols and InteractiveBrokers symbols.
    /// </summary>
    public class InteractiveBrokersSymbolMapper : ISymbolMapper
    {
        /// <summary>
        /// Converts a Lean symbol instance to an InteractiveBrokers symbol
        /// </summary>
        /// <param name="symbol">A Lean symbol instance</param>
        /// <returns>The InteractiveBrokers symbol</returns>
        public string GetBrokerageSymbol(Symbol symbol)
        {
            if (symbol == null || symbol == Symbol.Empty || string.IsNullOrWhiteSpace(symbol.Value))
                throw new ArgumentException("Invalid symbol: " + (symbol == null ? "null" : symbol.ToString()));

            if (symbol.ID.SecurityType != SecurityType.Forex && symbol.ID.SecurityType != SecurityType.Equity)
                throw new ArgumentException("Invalid security type: " + symbol.ID.SecurityType);

            if (symbol.ID.SecurityType == SecurityType.Forex && symbol.Value.Length != 6)
                throw new ArgumentException("Forex symbol length must be equal to 6: " + symbol.Value);

            return symbol.Value;
        }

        /// <summary>
        /// Converts an InteractiveBrokers symbol to a Lean symbol instance
        /// </summary>
        /// <param name="brokerageSymbol">The InteractiveBrokers symbol</param>
        /// <param name="securityType">The security type</param>
        /// <param name="market">The market</param>
        /// <returns>A new Lean Symbol instance</returns>
        public Symbol GetLeanSymbol(string brokerageSymbol, SecurityType securityType, string market)
        {
            if (string.IsNullOrWhiteSpace(brokerageSymbol))
                throw new ArgumentException("Invalid symbol: " + brokerageSymbol);

            if (securityType != SecurityType.Forex && securityType != SecurityType.Equity)
                throw new ArgumentException("Invalid security type: " + securityType);

            return Symbol.Create(brokerageSymbol, securityType, market);
        }
    }
}
