using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;

/*
 * USAGE
 * 
 * Just put this script into a button that needs
 * to execute the HTTP request, and in the text field
 * write the exact URL needed for the request.
 * 
 * */


public class GetData : MonoBehaviour
{
	Text objectText;

    void Start()
    {
		objectText = GetComponentInParent<Text> ();
    }

	public void DisplayStuff(string request)
	{
		StartCoroutine (MakeRequest (request));
	}

	IEnumerator MakeRequest(string request)
    {
        using (UnityWebRequest www = UnityWebRequest.Get(request))
        {
			yield return www.SendWebRequest();

            if (www.isNetworkError || www.isHttpError)
            {
                Debug.Log(www.error);
            }
            else
			{

				//this should be saved somewhere else...
				List<PlayerInfo> players;
				
                // Show results as text
				players = ParseJsonRaw(www.downloadHandler.text);
				objectText.text = DisplayInfo (players);

                // Or retrieve results as binary data
                byte[] results = www.downloadHandler.data;
            }
        }
    }

	public List<PlayerInfo> ParseJsonRaw(string json)
	{
		List<PlayerInfo> players = new List<PlayerInfo>();
		string tempjson = "";

		bool ignorequotes = false;
		bool specialchar = false;
		bool insideobject = false;

		foreach (char c in json)
		{
			if (insideobject)
			{
				tempjson += c;
			}
			
			if (c == '\"')
			{
				if (!specialchar)
				{
					ignorequotes = !ignorequotes;
				}
			}

			if(specialchar)
			{
				specialchar = false;
			}

			if(c == '\\')
			{
				specialchar = true;
			}

			if (!ignorequotes)
			{
				if (c == '{')
				{
					insideobject = true;
					tempjson += c;
				}
				else if (c == '}')
				{
					insideobject = false;
					players.Add(ParseJson(tempjson));
					tempjson = "";
				}
			}
		}

		return players;
	}

	public PlayerInfo ParseJson(string json)
	{
		return JsonUtility.FromJson<PlayerInfo>(json);
	}

	public string DisplayInfo(List<PlayerInfo> p)
	{
		string output = "";

		foreach (PlayerInfo pi in p)
		{
			output += "Player ID: " + pi.user_id + "\t\tUser: " + pi.username + "\n";
		}

		return output;
	}
}