75 lines
1.8 KiB
JavaScript
75 lines
1.8 KiB
JavaScript
const express = require('express');
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const cors = require('cors');
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const fs = require('fs');
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const path = require('path');
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const app = express();
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const PORT = process.env.PORT || 3000;
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const TASKS_FILE = path.join(__dirname, 'tasks.json');
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// Middleware
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app.use(cors());
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app.use(express.json());
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app.use(express.static('public'));
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// Lade Aufgaben
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function loadTasks() {
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try {
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const data = fs.readFileSync(TASKS_FILE, 'utf8');
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return JSON.parse(data);
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} catch (error) {
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console.error('Fehler beim Laden der Aufgaben:', error);
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return [];
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}
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}
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// Speichere Aufgaben
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function saveTasks(tasks) {
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fs.writeFileSync(TASKS_FILE, JSON.stringify(tasks, null, 2));
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}
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// API: Hole alle Aufgaben
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app.get('/api/tasks', (req, res) => {
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const tasks = loadTasks();
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res.json({ tasks });
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});
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// API: Prüfe Antwort
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app.post('/api/check-answer', (req, res) => {
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const { taskId, answer } = req.body;
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if (!taskId || answer === undefined) {
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return res.status(400).json({ error: 'taskId und answer sind erforderlich' });
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}
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const tasks = loadTasks();
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const taskIndex = tasks.findIndex(t => t.id === taskId);
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if (taskIndex === -1) {
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return res.status(404).json({ error: 'Aufgabe nicht gefunden' });
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}
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const task = tasks[taskIndex];
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const userAnswer = parseInt(answer);
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const correctAnswer = parseInt(task.answer);
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const isCorrect = userAnswer === correctAnswer;
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// Speichere Antwort und isCorrect in der Task
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tasks[taskIndex].userAnswer = userAnswer;
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tasks[taskIndex].isCorrect = isCorrect;
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saveTasks(tasks);
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res.json({
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correct: isCorrect,
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correctAnswer: correctAnswer,
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points: isCorrect ? task.points : 0
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});
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});
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// Starte Server
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app.listen(PORT, () => {
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console.log(`MathQuest Server läuft auf http://localhost:${PORT}`);
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});
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