ICTS_Denmark/Assets/Core/DebugUtils/Logger.cs

using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;

/// <summary>
/// This is a simple logger override, that will catch any AVDebug.LogXXX calls. It also exposes some simple wrappers
/// for logging events in Flurry.
/// To use it simply drag the Logger prefa into your first scene, and will continue to exist across scenes.
///
/// It keeps track of the logs in a StringBuilder, which can then be viewed through Show Log button in
/// the Debug Menu, through DebugViewManager and build must have DEBUG set in Scripting Define Symbols.
/// The player can also Copy Log (in Web Build only, since we don't have access to clipboard in iOS or Android)
///
/// It also keeps track of the last exception, which can be emailed through Email Last Exception button in
/// the Debug Menu, through DebugViewManager and build must have DEBUG set in Scripting Define Symbols
///
/// You can also halt the application on the first exception that occurs and show the Crash scene where they
/// have access to the Debug Menu. DEBUG;HALT_ON_EXCEPTION must be set in Scripting Define Symbols.
/// On iOS, Script Call Optimization must be set to Slow and Safe (otherwise it will crash the application)
/// We only should use this when we have an issue with some client and want to get the stack trace of their
/// crash
///
/// ALWAYS MAKE SURE THAT ON RELEASE, TO HAVE Scripting Define Symbols EMPTY AND ON iOS TO HAVE Script Call Optimization
/// SET TO FAST & FURIOUS.
/// </summary>
public class Logger : MonoBehaviour
{
	#region Unity Singleton
	private static Logger _instance;

	public static Logger Instance
	{
		get
		{
			if (_instance == null)
			{
				_instance = FindObjectOfType(typeof(Logger)) as Logger;
				if (_instance == null)
				{
					AVDebug.LogError(string.Format("No gameObject with {0} component exists. Make sure to create a gameObject with {0} component", new System.Diagnostics.StackFrame().GetMethod().DeclaringType));
				}
			}

			return _instance;
		}
	}

	void Awake()
	{
		if (_instance != null && _instance != this)
		{
			AVDebug.LogWarning(string.Format("{0} Instance already exists on another gameObject. Destroying this gameObject {1}", this.GetType().Name, gameObject.name));
			Destroy(gameObject);
			return;
		}

		_instance = this;
		DontDestroyOnLoad(gameObject);
	}
	#endregion

	static StringBuilder log = new StringBuilder();
	Vector2 _logScrollPosition;
	bool _isShowingLog;
	public GUIStyle logBackgroundStyle;
	string _lastException;
	const int MAX_URL_SIZE = 2083; //According to http://stackoverflow.com/questions/4067391/getting-around-mailto-href-url-character-limit

    #region Unity Callbacks
	void OnEnable()
	{
		Application.logMessageReceived+=(LogCallbackHandler);
		DebugViewManager.OnDebugView += OnDebugView;
	}

	void OnDisable()
	{
		Application.logMessageReceived += (null);
		DebugViewManager.OnDebugView -= OnDebugView;
	}
    #endregion

	void LogCallbackHandler(string logString, string stackTrace, LogType type)
	{
		StackTrace s = new StackTrace(true);
		string logMessage = type + ": " + logString + "\n" + s.ToString();
		Log(logMessage);
		//Crash reporting based on this http://entitycrisis.blogspot.com/2011/01/error-reporting-from-your-unity3d-game.html
		if (type == LogType.Exception &&
			!logString.Contains("SocketException")) // Don't make it stop cause of a socket exception (as this would not allow to play offline)
		{
			_lastException = logMessage;
			#if HALT_ON_EXCEPTION
				Application.LoadLevel("Crash");
			#endif
		}
	}

	[System.Diagnostics.Conditional("DEBUG")]
	private static void Log(string message)
	{
		log.AppendLine(message);
		log.AppendLine();
		#if UNITY_WEBPLAYER
		    Application.ExternalCall("LogMessage",message);
		#endif
	}

	public static void LogFlurryEvent(string eventName, params string[] keyValues)
	{
#if UNITY_IPHONE || UNITY_ANDROID
        AVDebug.Assert(keyValues.Length % 2 == 0, "Make sure to pass key value pairs");
        var parameters = new Dictionary<string, string>();
        for (int i = 0; i < keyValues.Length; i += 2)
        {
            parameters[keyValues[i]] = keyValues[i + 1];
        }
#if UNITY_IPHONE
        FlurryLogger.Instance.LogFlurryEvent(eventName, keyValues);
#elif UNITY_ANDROID && !UNITY_EDITOR
        FlurryLogger.Instance.LogFlurryEvent(eventName, keyValues);
        //FlurryAndroid.logEvent(eventName, parameters, false);
#endif
#elif UNITY_WEBPLAYER
	        Application.ExternalCall("LogFlurryEventWithParameters", eventName, keyValues);
#endif
//#if UNITY_IPHONE
//		FlurryBinding.logEvent(eventName, false);
//#elif UNITY_ANDROID
//        FlurryLogger.Instance.LogFlurryEvent(eventName);
//		#elif UNITY_WEBPLAYER
//        	Application.ExternalCall("LogFlurryEvent", eventName);
//		#endif
	}

	/*public static void LogFlurryEvent(string eventName, params string[] keyValues)
	{
		#if UNITY_IPHONE || UNITY_ANDROID
	        AVDebug.Assert(keyValues.Length % 2 == 0, "Make sure to pass key value pairs");
	        var parameters = new Dictionary<string, string>();
	        for (int i = 0; i < keyValues.Length; i += 2)
	        {
	                parameters[keyValues[i]] = keyValues[i+1];
	        }
	        #if UNITY_IPHONE
	        	FlurryBinding.logEventWithParameters(eventName, parameters, false);
	        #elif UNITY_ANDROID
	        	FlurryAndroid.logEvent(eventName, parameters, false);
	        #endif
		#elif  UNITY_WEBPLAYER
	        Application.ExternalCall("LogFlurryEventWithParameters", eventName, keyValues);
		#endif
	}*/

	void OnDebugView()
	{
		if (_isShowingLog)
		{
			if (GUILayout.Button("Hide Log"))
			{
				_isShowingLog = false;
			}
			_logScrollPosition = GUILayout.BeginScrollView(_logScrollPosition, logBackgroundStyle, GUILayout.Width(Screen.width), GUILayout.Height(400));
			GUILayout.Label(log.ToString(), GUILayout.Width(2048));
			GUILayout.EndScrollView();
		}
		else
		{
			if (GUILayout.Button("Show Log"))
			{
				_isShowingLog = true;
			}
		}
		GUILayout.BeginHorizontal();
		if (GUILayout.Button("Clear Log"))
		{
			log = new StringBuilder();
		}
		#if UNITY_WEBPLAYER
			if (GUILayout.Button("Copy Log"))
			{
				//from http://forum.unity3d.com/threads/24101-Copy-TextField-or-TextArea-text-to-Clipboard
				TextEditor te = new TextEditor();
				te.content = new GUIContent(log.ToString());
				te.SelectAll();
				te.Copy();
			}
		#endif
		if (_lastException != null &&
			GUILayout.Button("Email Last Exception"))
		{
			string emailURL = "mailto:"+GameConstants.SUPPORT_EMAIL_FOR_IOS_CRASH_LOG+"?subject="+WWW.EscapeURL(GameConstants.GAME_NAME)+"%20log&body="+WWW.EscapeURL(_lastException);
			if (emailURL.Length > MAX_URL_SIZE) //which seems to be the limit of IE
			{
				emailURL.Substring(0, MAX_URL_SIZE);
			}

			Application.OpenURL(emailURL);
		}

		GUILayout.EndHorizontal();
	}
}