The correct definition of data - angularjs

Question

i have this code, when i run it i get an error of "ReferenceError: data is not defined" i have defined data in several ways but nothing seem to be correct. the thing is that when i think about it data is declared in api (no?).. would appreciate some help..
app.service('StatisticsService',
['apiClient', '$q', '$rootScope', '$timeout',
function (apiClient, $q, $rootScope, $timeout) {
var self = this;
self.getStatisticsFromServer = function (data) {
var deferred = $q.defer(); //1
apiClient.getStatsTopMeeters(data)
.then(function (response) { //2
console.log('externalApiConnect', response);
if (response.data.length === 0 || response.result !== "success") {
// TODO: show error
deferred.reject(response);
}
var stats = response.data;
stats = self.getUserProfiles(stats);
deferred.resolve(stats);//3
}
, function (error) {
deferred.reject(error);
console.error(error);
});
return deferred.promise; //4
};
self.getUserProfiles = function (stats) {
var deferred = $q.defer();
var emails = [];
for (var i = 0; i < stats.length; i++) {
emails.push(stats[i].email);
}
console.log(emails);
var data2 = {
token: data.token,
profile_emails: emails
};
apiClient.getUserProfiles(data2).then(function (response2) {
console.log('getUserProfiles', (response2));
if (response2.data.length === 0 || response2.result !== "success") {
// TODO: show error
deferred.reject(response2);
}
var stats = response2.data;
deferred.resolve(stats);//3
}
);
};
}]);
this is some of the apiClient page
app.service('apiClient', ['$http', '$q','$rootScope', function ($http, $q, $rootScope) {
var canceler = $q.defer();
var request = function (apiMethod, apiResponse) {
switch (apiMethod) {
case 'set_meeting_note':
case 'get_meeting_details':
case 'get_account_details':
case 'get_availability':
case 'get_best_time':
case 'get_participants_statuses':
case 'check_user_verified_send_email':
case 'get_participants_statuses':
case 'get_user_profiles':
case 'set_calendar_settings':
case 'sync_external_apis':
$rootScope.showLoader = false;
break;
default:
$rootScope.showLoader = true;
break;
}
var config = {
method: 'POST',
url: apiPath + apiMethod,
data: apiResponse,
headers: {'Content-Type': 'application/x-www-form-urlencoded'},
withCredentials: true,
timeout: canceler.promise
};
$http(config).success(function (data) {
$rootScope.showLoader = false;
if (data.message === undefined) {
deferred.resolve(data);
} else {
deferred.reject(data);
}
}).error(function (data, status, headers, config) {
$rootScope.showLoader = false;
deferred.reject(data);
});
return deferred.promise;
};
return {
getStatsTopMeeters: function (data) {
return request('get_stats_top_meeters',data );
},
getUserProfiles: function(data){
return request('get_user_profiles',data);
},
}