using UnityEngine;
using System;
using System.IO;

public class WriteInCSV : MonoBehaviour
{
    public int index = 0;

    private string path;

    private void Start()
    {
        string currentPath = Directory.GetCurrentDirectory();
        string reference = @"\Assets\CSV_files\";
        string directory = currentPath + @"\Assets\CSV_files";

        // create directory if not existing
        if (!Directory.Exists(directory))
        {
            Directory.CreateDirectory(directory);
        }
        // create file for path
        using (File.Create(currentPath + reference + "Walk" + index + ".csv")) 
        { 
            path = currentPath + reference + "Walk" + index + ".csv"; 
        }
        // write column name
        using (StreamWriter firstLine = new StreamWriter(path))
        {
            var line = string.Format("Position x;Position y;Position z;Rotation x;Rotation y;Rotation z;Rotation w"); 
            firstLine.WriteLine(line);
            firstLine.Flush();
        }
    }

    // Start is called before the first frame update
    private void Update()
    {
        // Save position of Human leaders in file
        Vector3 pos = this.gameObject.transform.position; // (x,y,z)
        Quaternion rot = this.gameObject.transform.rotation; // (x,y,z,w)

        if (File.Exists(path))
        {
            try
            {
                using (StreamWriter file = new StreamWriter(path, true))
                {
                    // 
                    var line = string.Format("{0};{1};{2};{3};{4};{5};{6}", 
                        pos.x.ToString("f6"), pos.y.ToString("f6"), pos.z.ToString("f6"), rot.x.ToString("f6"), rot.y.ToString("f6"), rot.z.ToString("f6"), rot.w.ToString("f6"));
                    file.WriteLine(line);
                    file.Flush();
                }
            }
            catch (Exception e)
            {
                throw new ApplicationException("Something went wrong by writing into a csv file : ", e);
            }
        }
    }
}