Unable to get value from AngularJS Scope - angularjs

Question

I have an existing project in AngularJS. There is an HTML page with client address. Its markup is:
<div class="text-left m-t-lg">
<h5>
Address
</h5>
<address>
<div ng-show="customerInfo.companyName != ''"><small>{{customerInfo.companyName}}</small><br /></div>
<div ng-show="customerInfo.customerName != ''"><small>{{customerInfo.customerName}}</small><br /></div>
<div ng-show="customerInfo.address != ''"><small>{{customerInfo.address}}</small><br /></div>
<div ng-show="customerInfo.email != ''"><small>{{customerInfo.email}}</small></div>
</address>
</div>
The directive:
app.directive('addressHeader', function () {
return {
scope: {
addressHeaderInfo: '=info'
},
templateUrl: 'address/addressHeader.html',
controller: 'addressHeaderController',
controllerAs: 'ahc'
};
});
My issue is In addressHeaderController.js I don't see addressHeaderInfo or info or customerInfo object. I need to update this object. Where is this object initialized from? I don't know much about AngularJS.
Controller:
app.controller('addressHeaderController', ['$http', 'APIService', '$scope', '$stateParams', '$sessionStorage', '$translate', '$state', '$rootScope', '$timeout', '$locale', 'tmhDynamicLocale',
function ($http, APIService, $scope, $stateParams, $sessionStorage, $translate, $state, $rootScope, $timeout, $locale, tmhDynamicLocale) {
var ctl = this;
$scope.followingAddress = false;
$scope.followData = {};
$scope.issueDisplay = '';
$scope.showResend = true;
$scope.showLoyaltyColumn = $sessionStorage.userObject.clientInfo.showLoyaltyColumnOnSurveyDetail;
ctl.isOpen = false;
ctl.dateOptions = { showWeeks: false };
$scope.businessUnits = null;
$scope.targetDealership = null;
$scope.realignComment = null;
$scope.$watch('addressHeaderInfo', function () {
debugger;
//Where is $scope.addressHeaderInfo coming from?
if (typeof ($scope.addressHeaderInfo) != 'undefined') {
//Some operations here. Not related to assigning anything to $scope.
}
});
function getDepartmentData() {
//No assignment here as well.
}
$scope.resendData = function () {
if ($sessionStorage.clientObject.requiresResendJustification) {
$('#resendJustificationModal').modal('show');
}
else {
var resendData = {};
resendData.recordId = $scope.addressHeaderInfo.addressID;
resendData.statusId = 24;
APIService.postData(resendData, 'Address/UpdateResendStatus')
.then(function (data) {
if (data.status == 200) {
$rootScope.$broadcast('resendRequest');
}
else {
toastr["error"]('Error');
}
});
}
}
$scope.nextAddress = function () {
$rootScope.$broadcast('addressNavigation', $scope.AddressList[$scope.recordNumber]);
$scope.recordNumber = $scope.recordNumber + 1;
}
$scope.previousAddress = function () {
$rootScope.$broadcast('addressNavigation', $scope.AddressList[$scope.recordNumber-2]);
$scope.recordNumber = $scope.recordNumber - 1;
}
$scope.followAddress = function () {
APIService.postData($scope.addressHeaderInfo, 'Address/follow')
.then(function (data) {
if (data.status == 200) {
toastr["success"]($translate.instant('AddressFollowedSaved'));
$scope.followData = data.data;
$scope.followingAddress = true;
}
else {
toastr["error"]($translate.instant('AddressFollowedErrored'));
}
})
}
$scope.unfollowAddress = function () {
APIService.deleteData('Address/follow/' + $scope.followData.AddressFavoriteId)
.then(function (data) {
if (data.status == 200) {
toastr["success"]($translate.instant('AddressUnfollowedSaved'));
$scope.followingAddress = false;
}
else if (data.status == 500) {
toastr["error"]($translate.instant('AddressUnfollowedErrored'));
}
});
}
$scope.AddressReminder = function () {
$('#setReminderPopup').modal('show');
}
$scope.saveReminder = function () {
$scope.followData.notificationDate = $scope.followData.displayDate;
APIService.postData($scope.followData, 'Address/follow/reminder')
.then(function (data) {
if (data.status == 200) {
toastr["success"]($translate.instant('AddressReminderSaved'));
$('#setReminderPopup').modal('hide');
}
else {
toastr["error"]($translate.instant('AddressReminderErrored'));
}
})
}
$scope.realignAddress = function () {
if ($scope.addressHeaderInfo) {
if (!$scope.businessUnits) {
getBusinessUnits();
}
var bu = $scope.addressHeaderInfo.businessUnit;
if (bu) {
bu.realignDisplayName = bu.name + ', ' + bu.shippingCity + ', ' + bu.suppliedBusinessUnitNumber;
}
$scope.realignComment = null;
$('#realignPopup').modal('show');
}
}
$scope.saveRealignRequest = function () {
var realignedAddress = $scope.addressHeaderInfo;
var realignData = {
AddressId: $scope.addressHeaderInfo.AddressID,
businessUnitId: $scope.targetDealership.businessUnitID,
notes: $scope.realignComment
};
APIService.postData(realignData, 'Address/requestRealignment')
.then(function (data) {
if (data.status == 200) {
toastr["success"]($translate.instant('AddressRealignRequestSaved'));
$('#realignPopup').modal('hide');
realignedAddress.realignmentStatus = 'Pending'; // cause Realign button to disappear and "Realignment is pending" message to show
} else {
toastr["error"]($translate.instant('AddressRealignRequestErrored'));
}
});
}
$scope.$on('advanceToNextIssue', function (event, data) {
if ($scope.AddressList && ($scope.recordNumber < $scope.AddressList.length)) {
$scope.nextAddress();
}
});
}]);