/* Copyright (C) 2019 Interactive Brokers LLC. All rights reserved. This code is subject to the terms
 * and conditions of the IB API Non-Commercial License or the IB API Commercial License, as applicable. */

using System.Collections.Generic;
using System.Text;
using System.Globalization;
using System.IO;

namespace IBApi
{
    public static class IBParamsList
    {
        public static void AddParameter(this BinaryWriter source, decimal value)
        {
            AddParameter(source, Util.DecimalMaxString(value));
        }

        public static void AddParameter(this BinaryWriter source, OutgoingMessages msgId)
        {
            AddParameter(source, (int)msgId);
        }

        public static void AddParameter(this BinaryWriter source, int value)
        {
            AddParameter(source, value.ToString(CultureInfo.InvariantCulture));
        }

        public static void AddParameter(this BinaryWriter source, double value)
        {
            AddParameter(source, value.ToString(CultureInfo.InvariantCulture));
        }

        public static void AddParameter(this BinaryWriter source, bool? value)
        {
            if (value.HasValue)
            {
                AddParameter(source, value.Value ? "1" : "0");
            }
            else
            {
                source.Write(Constants.EOL);
            }

        }

        public static void AddParameter(this BinaryWriter source, string value)
        {
            if (value != null && !isAsciiPrintable(value))
                throw new EClientException(EClientErrors.INVALID_SYMBOL, value);

            if (value != null)
                source.Write(Encoding.UTF8.GetBytes(value));
            source.Write(Constants.EOL);
        }

        public static void AddParameter(this BinaryWriter source, Contract value)
        {
            source.AddParameter(value.ConId);
            source.AddParameter(value.Symbol);
            source.AddParameter(value.SecType);
            source.AddParameter(value.LastTradeDateOrContractMonth);
            source.AddParameter(value.Strike);
            source.AddParameter(value.Right);
            source.AddParameter(value.Multiplier);
            source.AddParameter(value.Exchange);
            source.AddParameter(value.PrimaryExch);
            source.AddParameter(value.Currency);
            source.AddParameter(value.LocalSymbol);
            source.AddParameter(value.TradingClass);
            source.AddParameter(value.IncludeExpired);
        }

        public static void AddParameter(this BinaryWriter source, List<TagValue> options)
        {
            source.AddParameter(Util.TagValueListToString(options));
        }

        public static void AddParameterMax(this BinaryWriter source, double value)
        {
            if (value == double.MaxValue)
                source.Write(Constants.EOL);
            else if (value == double.PositiveInfinity)
                source.AddParameter(Constants.INFINITY_STR);
            else
                source.AddParameter(value);

        }

        public static void AddParameterMax(this BinaryWriter source, int value)
        {
            if (value == int.MaxValue)
                source.Write(Constants.EOL);
            else
                source.AddParameter(value);
        }

        private static bool isAsciiPrintable(string str)
        {
            if (str == null)
            {
                return false;
            }
            for (int i = 0; i < str.Length; i++)
            {
                if (isAsciiPrintable(str[i]) == false)
                {
                    return false;
                }
            }
            return true;
        }

        private static bool isAsciiPrintable(char ch)
        {
            return ch >= 32 && ch < 127;
        }


    }
}