using System;
using System.Collections.Generic;
using System.Dynamic;
using System.IO;
using System.Net;
using Json.Net;
using Newtonsoft.Json;

namespace FileCreator
{
    internal class Program
    {
        private String outOffsetFileName = "graphOffset.wg";
        private String outFileTitlesName = "graphTitles.wg";
        private String outGraphFileName = "graphStruct.wg";

        private int bytesRequiredForID = 3;
        private int amountOfObjects = -1;

        private List<GraphObject> jsonGraphReader(String fileName)
        {
            List<GraphObject> graphObjects = new List<GraphObject>();

            using (StreamReader r = File.OpenText(fileName))
            {
                string json = r.ReadToEnd();
                List<GraphObject> items = JsonConvert.DeserializeObject<List<GraphObject>>(json);
            }
            return graphObjects;
        }

        private BinaryWriter createNewBinaryFile(String outFileName)
        {
            return new BinaryWriter(new FileStream(outFileName, FileMode.Create));
        }

        private void saveGraphObjectInitialParameters(GraphObject g, BinaryWriter bw)
        {
            int offsetBytes = 4;
            int requiredBytes = this.bytesRequiredForID + offsetBytes; // ID, OFFSET
            byte[] nodeData = new byte[requiredBytes];

            int offsetStart = this.amountOfObjects * requiredBytes;
            //Array.Copy(BitConverter.GetBytes((g.id)),0, nodeData, 0, 3);

            bw.Write(nodeData);
        }

        private void saveGraphObjectNeightbours(GraphObject g, BinaryWriter bw)
        {
            int bytesForIDs = g.amountOfNeightbours() * this.bytesRequiredForID; // on given offset all neightbours ids
            byte[] nodeData = new byte[bytesForIDs];

            bw.Write(nodeData);
        }

        private void createGraphFile(String jsonInputFileName)
        {

            List<GraphObject> graphObjects = jsonGraphReader(jsonInputFileName);
            this.amountOfObjects = graphObjects.Count;
            BinaryWriter bwStreamOffset = createNewBinaryFile(this.outOffsetFileName);

            foreach (var go in graphObjects)
            {
                saveGraphObjectInitialParameters(go, bwStreamOffset);
            }

            ////// GRAPH STRUCTURE FILE
            BinaryWriter bwStreamGraph = createNewBinaryFile(this.outGraphFileName);
            foreach (var go in graphObjects)
            {
                saveGraphObjectNeightbours(go, bwStreamGraph);
            }

            bwStreamOffset.Close();
            bwStreamGraph.Close();
        }

        public static void Main(string[] args)
        {
            Console.WriteLine("Test");
            Console.ReadKey();
        }
    }
}