using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Esiur.Misc;
using System.Reflection;

namespace Esiur.Data
{
    /// <summary>
    /// BinaryList holds a list of items to be converted to binary for storage and transmission
    /// </summary>
    public class BinaryList
    {
        private List<byte> held = new List<byte>();

        /// <summary>
        /// Create an instance of BinaryList
        /// </summary>
        public BinaryList()
        {

        }

        /// <summary>
        /// Converts parameters to binary in same order
        /// </summary>
        /// <param name="values">Variables to convert</param>
        public static byte[] ToBytes(params object[] values)
        {
            var held = new List<byte>();

            foreach (var i in values)
            {
                if (i is byte)
                    held.Add((byte)i);
                else
                {
#if NETSTANDARD1_5
                    MethodInfo mi = typeof(DC).GetTypeInfo().GetMethod("ToBytes", new Type[] { i.GetType() });
#else
                    MethodInfo mi = typeof(DC).GetMethod("ToBytes", new Type[] { i.GetType() });
#endif
                    if (mi != null)
                    {
                        var b = (byte[])mi.Invoke(null, new object[] { i });
                        held.AddRange(b);
                    }
                }
            }

            return held.ToArray();
        }

        /// <summary>
        /// Create a new instance of BinaryList
        /// </summary>
        /// <param name="values">Populate the list items</param>
        public BinaryList(params object[] values)
        {
            AddRange(values);
        }

        /// <summary>
        /// Add an array of items at the end of the list
        /// </summary>
        /// <param name="values">Array of items</param>
        public void AddRange(object[] values)
        {
            foreach (var i in values)
            {
                if (i is byte)
                    held.Add((byte)i);
                else
                {
#if NETSTANDARD1_5
                    MethodInfo mi = typeof(DC).GetTypeInfo().GetMethod("ToBytes", new Type[] { i.GetType() });
#else
                    MethodInfo mi = typeof(DC).GetMethod("ToBytes", new Type[] { i.GetType() });
#endif
                    if (mi != null)
                    {
                        var b = (byte[])mi.Invoke(null, new object[] {i});
                        held.AddRange(b);
                    }
                }
            }
        }

        /// <summary>
        /// Add multiple items at the end of the list
        /// </summary>
        /// <param name="values">Parameters of items</param>
        public void Append(params object[] values)
        {
          AddRange(values);
        }

        /// <summary>
        /// Insert new items to the list at a specified index
        /// </summary>
        /// <param name="offset">Position in the list</param>
        /// <param name="values">Items to insert</param>
        public void Insert(int offset, params object[] values)
        {
            foreach (var i in values)
            {
                if (i is byte)
                {
                    held.Insert(offset++, (byte)i);
                }
                else
                {
#if NETSTANDARD1_5
                    MethodInfo mi = typeof(DC).GetTypeInfo().GetMethod("ToBytes", new Type[] { i.GetType() });
#else
                    MethodInfo mi = typeof(DC).GetMethod("ToBytes", new Type[] { i.GetType() });
#endif
                    if (mi != null)
                    {
                        var b = (byte[])mi.Invoke(null, new object[] { i });
                        held.InsertRange(offset, b);
                        offset += b.Length;
                    }
                }
            }
        }

        /// <summary>
        /// Number of the items in the list
        /// </summary>
        public int Length
        {
            get
            {
                return held.Count;
            }
        }

        /*
        public void Append(byte data)
        {
            held.Add(data);
        }

        public void Append(byte[] data)
        {
            held.AddRange(data);
        }

        public void Append(int data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(uint data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(float data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(short data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(ushort data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(double data)
        {
            held.AddRange(DC.ToBytes(data));
        }

        public void Append(sbyte data)
        {
            held.Add((byte)data);
        }
         */

        /// <summary>
        /// Convert the list to an array of bytes
        /// </summary>
        /// <returns>Bytes array</returns>
        public byte[] ToArray()
        {
            return held.ToArray();
        }
    }
}