Using factory in another factory is undefined - AngularJS - angularjs

Question

I have a factories called ReportService and IndexService. I want to use IndexService inside of ReportService.
But in ReportService, it says that the IndexService is undefined. I'm not quite sure why.
Here's my code so far:
indexService.js
angular.module('IndexService', []).factory('IndexService', ['$http', function ($http) {
return {
// Sending npm config from server (node) to front-end as JSON so we can use it in front-end.
// See localhost.json.
getConfig: function() {
return $http.get("/api/get-config");
}
}
}]);
reportService.js
angular.module('ReportService', []).factory('ReportService', ['$http', 'IndexService', function ($scope, $http, IndexService) {
// Sending npm config from server (node) to front-end as JSON so we can use it in front-end.
// See localhost.json.
IndexService.getConfig()
.then(function(response) {
var configs = response.data
});
return {
generateExcelReport: function(searchCriteriaList) {
var requestConfig = {
responseType: "arraybuffer",
headers: { "Content-Disposition": "attachment" }
};
// I want to call IndexService.getConfig()
// so I can change my base URL and port based on environment. My configs are in node.js back-end
var url = configs.url;
var port = configs.port;
return $http.post(url + ":" port + "/my-api-link", searchCriteriaList, requestConfig);
},
}
}]);
app.js
angular.module('myApp', ['ngStorage', 'ngRoute', 'appRoutes', 'IndexController', 'IndexService', 'ReportController', 'ReportService', 'PackageController', 'PackageService', 'FarmService', 'DesignService', 'UserService', 'oitozero.ngSweetAlert', 'ui.select', 'ui.materialize', 'ngSanitize', 'ngFileSaver'])
my index.html script imports
<!-- Our Angular Controllers and Services JS -->
<script src="./js/controllers/indexController.js"></script>
<script src="./js/controllers/reportController.js"></script>
<script src="./js/controllers/nerdController.js"></script>
<script src="./js/controllers/packageController.js"></script>
<script src="./js/services/indexService.js"></script>
<script src="./js/services/reportService.js"></script>
<script src="./js/services/farmService.js"></script>
<script src="./js/services/packageService.js"></script>
<script src="./js/services/designService.js"></script>
<script src="./js/services/userService.js"></script>
<script src="./js/appRoutes.js"></script>
<script src="./js/app.js"></script>
Kindly help. I've been over 2 hours on this and I can't still find the problem.. Thanks in advance :)

Answer 1

You need to inject it first, like:
angular
.module('ReportService')
.factory('ReportService', ReportService);
ReportService.$inject = ['IndexService'];
function ReportService(IndexService) {
// You code blah blah here
}
At least this is a way, how i am doing.