using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WWTech_KanalSchnittstelle.Exporter.Kandis
{
    public static class ExporterHelper
    {
        public static Dictionary<string, int> Exporters = new Dictionary<string, int>()
        {
            { "KANSCH4.0",557 },
            { "KANSCH6.0",2041 },
            { "KANHAL4.0",530 },
            { "KANHAL6.0",2167 }
        };
    }
    public abstract class KANDIS_Exporter : IDisposable
    {
        private StreamWriter sw;
        char[] zeile;

        protected string Zeile => new string(zeile);

        public KANDIS_Exporter(string filename, int maxzeilen)
        {

            sw = new StreamWriter(filename, append: false, Encoding.GetEncoding("ISO-8859-1"));

            zeile = new char[1476];
            ClearLine();  
        }

        private void ClearLine()
        {
            for (int i = 0; i < zeile.Length; i++)
            {
                zeile[i] = ' ';
            }
        }

        protected void WriteLineInFile()
        {
            sw.WriteLine(Zeile);
            sw.Flush();
            ClearLine();
        }

        protected void WriteContent(Tuple<uint, uint> spalten, string content)
        {
            uint start = spalten.Item1 - 1;
            uint ende = spalten.Item2 - 1;

            uint length = ende - start;
            if(length > content.Length)
            {
                throw new Exception("Inhalt des Feldes ist zu lang");
            }

            int counter = 0;
            for (uint i = start; i < (content.Length + start); i++)
            {
                zeile[i] = content[counter];
                counter++;
            }
        }

        protected void CloseStream()
        {
            sw.Close();
        }
        public void Dispose()
        {
            sw.Close();
            sw.Dispose();
        }
    }
}