///
/// Copyright (c) 2018 Sensus Slovensko a.s.
///
using System;
using System.IO;
using System.Collections.Generic;
using log4net;

namespace TBF.BenchControl.Sequences
{
	public class Plotter : BenchControl.GenericDevices.IPlotter
	{
        static readonly ILog log = LogManager.GetLogger(typeof(Plotter));

		static readonly Dictionary<int, BinaryWriter> writers = new Dictionary<int, BinaryWriter>();
		static int nextGraphId = 1;



        readonly string caption;
        /// 
        public Plotter(string caption)
        {
            this.caption = caption;
        }



		public int StartGraph(int batchNr, string testName, int repetition)
		{
            try
            {
                int graphId = nextGraphId++;
                string directory = Path.Combine(TBF.Program.GraphsDir, batchNr.ToString(), testName, repetition.ToString());
                Directory.CreateDirectory(directory);
                BinaryWriter writer = new BinaryWriter(File.Open(Path.Combine(directory, caption), FileMode.Create));
                writers.Add(graphId, writer);
                log.InfoFormat("Graph file #{0} successfully created (batch={1} test={2} repet={3} caption={4})",
                                graphId, batchNr, testName, repetition, caption);
                return graphId;
            }
            catch (Exception exc)
            {
                log.ErrorFormat("Failed to create a graph file (batch={0} test={1} repet={2} caption={3}): {4}",
                                batchNr, testName, repetition, caption, exc.Message);
                return 0;
            }
		}

        public void UpdateGraph(int graphId, float x, float y)
		{
            try
            {
                BinaryWriter writer = writers[graphId];
                writer.Write(x);
                writer.Write(y);
            }
            catch (Exception exc)
            {
                log.ErrorFormat("Failed to update graph file #{0}: {1}", graphId, exc.Message);
            }
        }

        public void StopGraph(int graphId, float ymin, float ymax)
		{
            try
            {
                BinaryWriter writer = writers[graphId];
				writer.Write(ymin);
				writer.Write(ymax);
				writer.Close();
                writers.Remove(graphId);
            }
            catch (Exception exc)
            {
                log.ErrorFormat("Failed to close graph file #{0}: {1}", graphId, exc.Message);
            }
        }
	}
}