using UnityEngine;
using LitJson;
using System;
using System.Collections;
using System.Collections.Generic;

public class URLRequest : MonoBehaviour
{


	public enum Method
	{
		GET,
		POST,
	}

	public string url;
	public Method method;
	public WWWForm form;
	public URLRequestCallBackDelegate callBack;
	public URLRequestJsonCallBackDelegate jsonCallBack;

	// Use this for initialization
	IEnumerator Start() {
        WWW www = (form == null ? new WWW(url) : new WWW(url, form));
		yield return www;

		string data = null;
        
		Debuger.LogWarning("Url loaded : "+url);
		if(www.error != null)
		{
			data = www.error;
			Debuger.LogError("Url error : "+www.error);
		}
		else
		{
			data = www.text;
			Debuger.LogWarning("Url result : "+www.text);
		}

		if(callBack != null)
			callBack(data);
		if(jsonCallBack != null)
			jsonCallBack(ParseRecieveJsonData(data));

	    URLGOs.Remove(gameObject);

		Destroy(this.gameObject);
	}

	public delegate void URLRequestCallBackDelegate(string data);
	public delegate void URLRequestJsonCallBackDelegate(JsonData data);

	public static URLRequest CreateStrURLRequest(bool important, string url, URLRequestData data = null, URLRequestCallBackDelegate callBack = null, Method method = Method.GET, bool dataEye = false)
	{
	    if (URLGOs.Count > MaxNotImportantURLAmt && !important)
	    {
	        return null;
	    }
		URLRequest urlRequest = CreateBaseURLRequest(url, data, method, dataEye);
		urlRequest.callBack = callBack;
		return urlRequest;
	}

    private static int MaxNotImportantURLAmt = 10;
    private static List<GameObject> URLGOs = new List<GameObject>();
	public static URLRequest CreateURLRequest(bool important, string url, URLRequestData data = null, URLRequestJsonCallBackDelegate callBack = null, Method method = Method.GET)
	{
        if (URLGOs.Count > MaxNotImportantURLAmt && !important)
        {
            return null;
        }
        URLRequest urlRequest = CreateBaseURLRequest(url, data, method);
		urlRequest.jsonCallBack = callBack;
		return urlRequest;
	}

	private static URLRequest CreateBaseURLRequest(string url, URLRequestData requestData = null, Method method = Method.GET, bool dataEye = false)
	{
		GameObject gameObj = new GameObject("URLRequest");
        DontDestroyOnLoad(gameObj);
        URLGOs.Add(gameObj);
        URLRequest urlRequest = gameObj.AddComponent<URLRequest>();

		Debuger.Log("Url request : "+url);
        
		if(!dataEye && requestData.HasData())
		{
			if(method == Method.GET)
			{
				if(url.IndexOf("?") == -1)
					url += "?";
				
				if(url.Substring(url.Length-1) != "?")
					url += "&";
				url += requestData.GetDataString();
			}
			else if(method == Method.POST)
			{
				urlRequest.form = requestData.GetDataForm();
			}
		}

		urlRequest.url = url;
		return urlRequest;
	}


	public static JsonData ParseRecieveJsonData(string data)
	{
		int index = data.IndexOf("{");
		if(index >= 0)
		{
			data = data.Substring(index);
		}

		try
		{
			return JsonMapper.ToObject(data);
		}
		catch(JsonException e)
		{
			Debuger.LogException(e);
            //Debug.Log(e.ToString());
            //Debug.Log(data);
		}
		
		JsonData json = new JsonData();
	    json["error"] = 0;
		return json;
	}
}