def UploadActivity(self, serviceRecord, activity):
        """
        POST a Multipart-Encoded File
        
        URL: https://app.velohero.com/upload/file
        Parameters:
        user = username
        pass = password
        view = json
        file = multipart-encodes file (fit, tcx, pwx, gpx, srm, hrm...)
        
        Maximum file size per file is 16 MB.
        """
        
        has_location = has_distance = has_speed = False

        for lap in activity.Laps:
            for wp in lap.Waypoints:
                if wp.Location and wp.Location.Latitude and wp.Location.Longitude:
                    has_location = True
                if wp.Distance:
                    has_distance = True
                if wp.Speed:
                    has_speed = True

        if has_location and has_distance and has_speed:
            format = "fit"
            data = FITIO.Dump(activity)
        elif has_location and has_distance:
            format = "tcx"
            data = TCXIO.Dump(activity)
        elif has_location:
            format = "gpx"
            data = GPXIO.Dump(activity)
        else:
            format = "fit"
            data = FITIO.Dump(activity)

        # Upload
        files = {"file": ("tap-sync-" + str(os.getpid()) + "-" + activity.UID + "." + format, data)}
        params = self._add_auth_params({"view":"json"}, record=serviceRecord)
        res = requests.post(self._urlRoot + "/upload/file",
                            headers=self._obligatory_headers,
                            files=files,
                            params=params)

        if res.status_code != 200:
            if res.status_code == 403:
                raise APIException("Invalid login", block=True, user_exception=UserException(UserExceptionType.Authorization, intervention_required=True))
            raise APIException("Unable to upload activity")

        res.raise_for_status()
        try:
            res = res.json()
        except ValueError:
            raise APIException("Could not decode activity list")
        
        if "error" in res:
            raise APIException(res["error"])

        # Set date, start time, comment and sport
        if "id" in res:
            workoutId = res["id"]
            params = self._add_auth_params({ 
                "workout_date" : activity.StartTime.strftime("%Y-%m-%d"), 
                "workout_start_time" : activity.StartTime.strftime("%H:%M:%S"),
                "workout_comment" : activity.Notes, 
                "sport_id" : self._activityMappings[activity.Type],
                "workout_hide": "yes" if activity.Private else "no"
            }, record=serviceRecord)
            res = requests.get(self._urlRoot + "/workouts/change/{}".format(workoutId),
                               headers=self._obligatory_headers,
                               params=params)
            if res.status_code != 200:
                if res.status_code == 403:
                    raise APIException("No authorization to change activity with workout ID: {}".format(workoutId), block=True, user_exception=UserException(UserExceptionType.Authorization, intervention_required=True))
                raise APIException("Unable to change activity with workout ID: {}".format(workoutId))

            return workoutId

        POST a Multipart-Encoded File
        
        URL: https://app.velohero.com/upload/file
        Parameters:
        user = username
        pass = password
        view = json
        file = multipart-encodes file (fit, tcx, pwx, gpx, srm, hrm...)
        
        Maximum file size per file is 16 MB.
        
tapiriik/services/VeloHero/velohero.py