using System;
using System.Collections.Generic;
using System.IO;
using System.Data;
using Mesnac.Equips;
using Mesnac.Equips.BaseInfo;
using System.Runtime.InteropServices;

namespace Mesnac.Equip.Display.Text.Default
{
    public class Equip : BaseEquip
    {
        public override bool Open()
        {
            lock (this)
            {
                blockReadCount = new Dictionary<string, int>();
                return true;
            }
        }
        private object[] getInfo(string str)
        {
            string info = str;
            if (info.IndexOf("@") > 0)
                info = info.Substring(info.IndexOf("@") + 1);
            if (info.IndexOf("/") > 0)
                info = info.Substring(0, info.IndexOf("/"));
            string[] ss = info.Split(':');
            object[] Result = new object[ss.Length - 1];
            for (int i = 1; i < ss.Length; i++)
            {
                Result[i - 1] = double.Parse(ss[i]);
            }
            return Result;
        }
        private Dictionary<string, int> blockReadCount = new Dictionary<string, int>();
        public override bool Read(string block, int start, int len, out object[] buff)
        {
            lock (this)
            {
                bool Result = false;
                buff = new object[len];

                int iReadCount = 0;
                if (blockReadCount.TryGetValue(block, out iReadCount))
                {
                    blockReadCount.Remove(block);
                }
                string buffstr = string.Empty;
                for (int i = 0; i < 2; i++)
                {
                    iReadCount++;
                    StreamReader sr = new StreamReader(AppDomain.CurrentDomain.BaseDirectory + @"ReceiveText.txt");
                    string nextLine = string.Empty;
                    int index = 0;
                    while (!string.IsNullOrWhiteSpace(nextLine = sr.ReadLine()))
                    {
                        string info = nextLine.Substring(nextLine.IndexOf("@") + 1);
                        string _block = info.Substring(0, info.IndexOf(":"));
                        if (_block == block)
                        {
                            index++;
                        }
                        if (iReadCount == index)
                        {
                            buffstr = nextLine;
                            Result = true;
                            break;
                        }
                    }
                    sr.Close();
                    if (Result)
                    {
                        break;
                    }
                    iReadCount = 0;
                }
                blockReadCount.Add(block, iReadCount);
                if (Result)
                {
                    object[] array = new object[len];
                    array = getInfo(buffstr);
                    if (array.Length >= len + start)
                    {
                        for (int i = 0; i < len; i++)
                        {
                            buff[i] = array[i];
                        }
                    }
                }
                return Result;
            }
        }
        public override bool Write(int block, int start, object[] buff)
        {
            lock (this)
            {
                if (!this.Open())
                {
                    return false;
                }
                return true;
            }
        }
        public override void Close()
        {
            lock (this)
            {
            }
        }
    }
}