trivia: avoid adding duplicate questiosn to the db

commands/games/trivia.js

@@ -100,6 +100,12 @@ const fetchTriviaQuestion = async (categoryId, categoryName) => {
           `https://opentdb.com/api.php?amount=1&category=${categoryId}&token=${sessionToken}`
         );
         const retryApiQuestion = retryResponse.data.results[0];
+        triviaQuestion = await TriviaQuestion.findOne({
+          question: decode(retryApiQuestion.question),
+          category: categoryName,
+        });
+
+        if (!triviaQuestion) {
           await TriviaQuestion.create({
             question: decode(retryApiQuestion.question),
             correct_answer: decode(retryApiQuestion.correct_answer),
@@ -112,7 +118,14 @@ const fetchTriviaQuestion = async (categoryId, categoryName) => {
             question: decode(retryApiQuestion.question),
             category: categoryName,
           });
+        }
       } else {
+        triviaQuestion = await TriviaQuestion.findOne({
+          question: decode(apiQuestion.question),
+          category: categoryName,
+        });
+
+        if (!triviaQuestion) {
           await TriviaQuestion.create({
             question: decode(apiQuestion.question),
             correct_answer: decode(apiQuestion.correct_answer),
@@ -126,6 +139,7 @@ const fetchTriviaQuestion = async (categoryId, categoryName) => {
             category: categoryName,
           });
         }
+      }
 
       LAST_API_CALL.time = Date.now(); // Update the last API call time
     } else {