Update controllers

drill-and-practice/routes/controllers/mainController.js

@@ -1,5 +1,18 @@
+import { countTopics } from "../../services/topicService.js";
+import { countQuestions } from "../../services/questionService.js";
+import { countAnswers } from "../../services/answerService.js";
+
 const showMain = ({ render }) => {
-  render("main.eta");
+  const statistics = {
+    totalTopics: 0,
+    totalQuestions: 0,
+    totalAnswers: 0,
+  };
+  statistics.totalTopics = countTopics();
+  statistics.totalQuestions = countQuestions();
+  statistics.totalAnswers = countAnswers();
+
+  render("main.eta", statistics);
 };
 
 export { showMain };