import sys
import os
import traceback
import requests
import logging
import clientinfo
import hashlib
import xbmc
import platform
import xbmcgui
import time
from utils import window, settings, language as lang

log = logging.getLogger("EMBY."+__name__)

# for info on the metrics that can be sent to Google Analytics
# https://developers.google.com/analytics/devguides/collection/protocol/v1/parameters#events

logEventHistory = {}

# wrap a function to catch, log and then re throw an exception
def log_error(errors=(Exception, )):
    def decorator(func):
        def wrapper(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except errors as error:
                ga = GoogleAnalytics()
                errStrings = ga.formatException()
                ga.sendEventData("Exception", errStrings[0], errStrings[1], True)
                log.exception(error)
                log.error("log_error: %s \n args: %s \n kwargs: %s",
                          func.__name__, args, kwargs)
                raise
        return wrapper
    return decorator

# main GA class
class GoogleAnalytics():

    testing = False
    
    def __init__(self):
    
        client_info = clientinfo.ClientInfo()
        self.version = client_info.get_version()
        self.device_id = client_info.get_device_id()
        
        # user agent string, used for OS and Kodi version identification
        kodi_ver = xbmc.getInfoLabel("System.BuildVersion")
        if(not kodi_ver):
            kodi_ver = "na"
        kodi_ver = kodi_ver.strip()
        if(kodi_ver.find(" ") > 0):
            kodi_ver = kodi_ver[0:kodi_ver.find(" ")]
        self.userAgent = "Kodi/" + kodi_ver + " (" + self.getUserAgentOS() + ")"
        
        # Use set user name
        self.user_name = settings('username') or settings('connectUsername') or 'None'
        
        # use md5 for client and user for analytics
        self.device_id = hashlib.md5(self.device_id).hexdigest()
        self.user_name = hashlib.md5(self.user_name).hexdigest()
        
        # resolution
        self.screen_mode = xbmc.getInfoLabel("System.ScreenMode")
        self.screen_height = xbmc.getInfoLabel("System.ScreenHeight")
        self.screen_width = xbmc.getInfoLabel("System.ScreenWidth")

        self.lang = xbmc.getInfoLabel("System.Language")
    
    def getUserAgentOS(self):
    
        if xbmc.getCondVisibility('system.platform.osx'):
            return "Mac OS X"
        elif xbmc.getCondVisibility('system.platform.ios'):
            return "iOS"
        elif xbmc.getCondVisibility('system.platform.windows'):
            return "Windows NT"
        elif xbmc.getCondVisibility('system.platform.android'):
            return "Android"
        elif xbmc.getCondVisibility('system.platform.linux.raspberrypi'):
            return "Linux Rpi"
        elif xbmc.getCondVisibility('system.platform.linux'):
            return "Linux"
        else:
            return "Other"
        
    def formatException(self):
        exc_type, exc_obj, exc_tb = sys.exc_info()
		
        latestStackFrame = None
        allStackFrames = traceback.extract_tb(exc_tb)
        if(len(allStackFrames) > 0):
            latestStackFrame = allStackFrames[-1]
        log.error(str(latestStackFrame))
		
        errorType = "NA"
        errorFile = "NA"
		
        if(latestStackFrame != None):
            fileName = os.path.split(latestStackFrame[0])[1]
            
            codeLine = "NA"
            if(len(latestStackFrame) > 3 and latestStackFrame[3] != None):
                codeLine = latestStackFrame[3].strip()

            errorFile = "%s:%s(%s)(%s)" % (fileName, latestStackFrame[1], exc_obj.message, codeLine)
            errorFile = errorFile[0:499]
            errorType = "%s" % (exc_type.__name__)
            log.error(errorType + " - " + errorFile)
			
        del(exc_type, exc_obj, exc_tb)
        
        return errorType, errorFile
	
    def getBaseData(self):
    
        # all the data we can send to Google Analytics
        data = {}
        data['v'] = '1'
        data['tid'] = 'UA-85356267-1' # tracking id, this is the account ID
        
        data['ds'] = 'plugin' # data source
        
        data['an'] = 'Kodi4Emby' # App Name
        data['aid'] = '1' # App ID
        data['av'] = self.version # App Version
        #data['aiid'] = '1.1' # App installer ID

        data['cid'] = self.device_id # Client ID
        #data['uid'] = self.user_name # User ID

        data['ua'] = self.userAgent # user agent string
        
        # add width and height, only add if full screen
        if(self.screen_mode.lower().find("window") == -1):
            data['sr'] = str(self.screen_width) + "x" + str(self.screen_height)
        
        data["ul"] = self.lang
        
        return data
    
    def sendScreenView(self, name):
    
        data = self.getBaseData()
        data['t'] = 'screenview' # action type
        data['cd'] = name
    
        self.sendData(data)
    
    def sendEventData(self, eventCategory, eventAction, eventLabel=None, throttle=False):
        
        # if throttling is enabled then only log the same event every 5 min
        if(throttle):
            throttleKey = eventCategory + "-" + eventAction + "-" + str(eventLabel)
            lastLogged = logEventHistory.get(throttleKey)
            if(lastLogged != None):
                timeSinceLastLog = time.time() - lastLogged
                if(timeSinceLastLog < 300):
                    log.info("SKIPPING_LOG_EVENT : " + str(timeSinceLastLog) + " " + throttleKey)
                    return
            logEventHistory[throttleKey] = time.time()
        
        data = self.getBaseData()
        data['t'] = 'event' # action type
        data['ec'] = eventCategory # Event Category
        data['ea'] = eventAction # Event Action
        
        if(eventLabel != None):
            data['el'] = eventLabel # Event Label
        
        self.sendData(data)
            
    def sendData(self, data):
    
        log.info("GA: " + str(data))

        if(settings('metricLogging') == "false"):
            return
        
        if(self.testing):
            url = "https://www.google-analytics.com/debug/collect" # test URL
        else:
            url = "https://www.google-analytics.com/collect" # prod URL
        
        try:
            r = requests.post(url, data)
        except Exception as error:
            log.error(error)
        
        if(self.testing):
            log.info("GA: " + r.text.encode('utf-8'))