using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using Facebook.Unity;
using DashGame;

public class FaceBookPlatform : ISocialPlatform 
{

	public SocialUser me;
	public SocialUser[] friends;

	private CallBackUtil.BoolCallBack initCallBack;
	public void Init(CallBackUtil.BoolCallBack callBack)
	{
		initCallBack = callBack;
		if (!FB.IsInitialized) {
			// Initialize the Facebook SDK
			FB.Init(InitCallback);
		} else {
			// Already initialized, signal an app activation App Event
			InitCallback();
		}
	}

	private void InitCallback ()
	{
		if (FB.IsInitialized) {
			// Signal an app activation App Event
			FB.ActivateApp();
		} else {
			Debug.Log("Failed to Initialize the Facebook SDK");
		}

		if(initCallBack != null)
		{
			initCallBack (FB.IsInitialized);
			initCallBack = null;
		}
	}

	public bool IsInitialized()
	{
		return FB.IsInitialized;
	}

	private CallBackUtil.BoolCallBack loginCallBack;
	public void Login(CallBackUtil.BoolCallBack callBack)
	{
		loginCallBack = callBack;
		var perms = new List<string>(){"public_profile", "email", "user_friends"};
		FB.LogInWithReadPermissions(perms, AuthCallback);
	}

	private void AuthCallback (ILoginResult result) {
		if (FB.IsLoggedIn) {
			// AccessToken class will have session details
			AccessToken aToken = Facebook.Unity.AccessToken.CurrentAccessToken;
			// Print current access token's User ID
			Debug.Log(aToken.UserId);
			// Print current access token's granted permissions
			foreach (string perm in aToken.Permissions) {
				Debug.Log(perm);
			}
		} else {
			Debug.Log("User cancelled login");
		}

		if (loginCallBack != null) {
			loginCallBack (FB.IsLoggedIn);
			loginCallBack = null;
		}
	}

	public bool IsLoggedIn()
	{
		return FB.IsLoggedIn;
	}


	private CallBackUtil.BoolCallBack friendsCallBack;
	public void RequestFriends(CallBackUtil.BoolCallBack callBack)
	{
		this.friendsCallBack = callBack;
		if (friends == null) {
			FB.API ("/me/friends", HttpMethod.POST, RequestFriendsCallBack);
		} else {
			dealFriendResult (true);
		}
	}

	private void RequestFriendsCallBack(IGraphResult result)
	{
	}

	private void dealFriendResult(bool successed)
	{
		if (friendsCallBack != null) {
			friendsCallBack (successed);
			friendsCallBack = null;
		}
	}

	public SocialUser[] GetFriends()
	{
		return friends;
	}

	public SocialUser GetMe()
	{
		return me;
	}

	public void Share (string contentURL, string contentTitle, string contentDescription, string photoURL, CallBackUtil.BoolCallBack callBack)
	{
		
	}

	public string IconPath()
	{
		return "Textures/SocialIcon/facebook";
	}

}