From d0e04152247a690e416d9ebfd1a52c194fdb7d06 Mon Sep 17 00:00:00 2001
From: RaquelSuarezSanchez <uo295000@uniovi.es>
Date: Wed, 5 Mar 2025 21:43:02 +0100
Subject: [PATCH] Added method to get incorrect answers for each question, as
 well as a method to get one question (that hasn't already been shown) that
 will be called from front-end.

---
 questionservice/question-model.js   |  3 ++-
 questionservice/question-service.js | 27 ++++++++++++++++++++++++++-
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/questionservice/question-model.js b/questionservice/question-model.js
index eac62de8..0400d77d 100644
--- a/questionservice/question-model.js
+++ b/questionservice/question-model.js
@@ -5,7 +5,8 @@ const questionSchema = new mongoose.Schema({
     imageUrl: { type: String, required: true }, 
     options: { type: [String], required: true }, // Opciones de respuesta
     correctAnswer: { type: String, required: true }, 
-    createdAt: { type: Date, default: Date.now } 
+    createdAt: { type: Date, default: Date.now },
+    alreadyShown: { type: Boolean, default:false } 
 });
 
 const Question = mongoose.model('Question', questionSchema);
diff --git a/questionservice/question-service.js b/questionservice/question-service.js
index b890f861..578e2312 100644
--- a/questionservice/question-service.js
+++ b/questionservice/question-service.js
@@ -1,6 +1,7 @@
 const axios = require('axios');
 const mongoose = require('mongoose');
 const Question = require('./question-model'); 
+const LLMService = require('../llmservice/llm-service');
 
 // Define the connection URL
 const mongoURI = 'mongodb://localhost:27017/mongo-db-wichat_en2a';
@@ -34,10 +35,11 @@ async function fetchFlagData(){
             }
         });
 
+
         const results = response.data.results.bindings.map(entry => ({
             type: "flag", 
             imageUrl: entry.flag.value,  
-            options: [entry.countryLabel.value],
+            options: getIncorrectAnswers(entry.countryLabel.value), // Insert incorrect answers using LLM.
             correctAnswer: entry.countryLabel.value 
         }));
 
@@ -52,6 +54,11 @@ async function fetchFlagData(){
     }   
 }
 
+/// Returns array including correct and incorrect answers.
+function getIncorrectAnswers(correctAnswer) {
+    return [correctAnswer, ...LLMService.getIncorrectAnswers(correctAnswer)];
+}
+
 async function saveQuestionsToDB(questions){
     try{
         await Question.insertMany(questions) //insert questions to db
@@ -62,6 +69,24 @@ async function saveQuestionsToDB(questions){
     }
 }
 
+// Should be called from front-end
+async function getAndUpdateQuestion() {
+    try {
+        // Find one question where alreadyShown is false
+        const question = await Question.findOneAndUpdate(
+            { alreadyShown: false }, // Find condition
+            { alreadyShown: true },  // Update to true
+            { new: true }            // Return the updated document
+        );
+
+        return question; // Return the extracted question
+    } catch (error) {
+        console.error("Error fetching question:", error);
+        return null;
+    }
+}
+
+
 //Just for testing purposes
 fetchFlagData();