created basic project structure

2025-10-05 10:52:44 +02:00
commit a1cede4157
14 changed files with 1585 additions and 0 deletions
--- a/backend/server.js
+++ b/backend/server.js
@@ -0,0 +1,140 @@
+const express = require('express');
+const cors = require('cors');
+const { v4: uuidv4 } = require('uuid');
+const db = require('./database');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// Middleware
+app.use(cors());
+app.use(express.json());
+
+// Validation helpers
+function isValidDate(dateString) {
+  const regex = /^\d{4}-\d{2}-\d{2}$/;
+  if (!regex.test(dateString)) return false;
+  const date = new Date(dateString);
+  return date instanceof Date && !isNaN(date);
+}
+
+function isValidMuscleGroups(muscleGroups) {
+  if (!Array.isArray(muscleGroups) || muscleGroups.length === 0) {
+    return false;
+  }
+  const validGroups = ['Chest', 'Legs', 'Delts', 'Lats', 'Triceps', 'Biceps'];
+  return muscleGroups.every(group => validGroups.includes(group));
+}
+
+// API Routes
+
+// GET /api/sessions - Fetch all sessions
+app.get('/api/sessions', (req, res) => {
+  db.getAllSessions((err, sessions) => {
+    if (err) {
+      console.error('Error fetching sessions:', err);
+      return res.status(500).json({ error: 'Failed to fetch sessions' });
+    }
+    res.json(sessions);
+  });
+});
+
+// POST /api/sessions - Create new session
+app.post('/api/sessions', (req, res) => {
+  const { date, muscle_groups } = req.body;
+
+  // Validation
+  if (!date) {
+    return res.status(400).json({ error: 'Date is required' });
+  }
+  if (!isValidDate(date)) {
+    return res.status(400).json({ error: 'Invalid date format. Use YYYY-MM-DD' });
+  }
+  if (!muscle_groups) {
+    return res.status(400).json({ error: 'Muscle groups are required' });
+  }
+  if (!isValidMuscleGroups(muscle_groups)) {
+    return res.status(400).json({
+      error: 'Invalid muscle groups. Must be a non-empty array containing: Chest, Legs, Delts, Lats, Triceps, Biceps'
+    });
+  }
+
+  // Generate unique ID
+  const id = uuidv4();
+
+  // Create session
+  db.createSession(id, date, muscle_groups, (err, session) => {
+    if (err) {
+      console.error('Error creating session:', err);
+      return res.status(500).json({ error: 'Failed to create session' });
+    }
+    res.status(201).json(session);
+  });
+});
+
+// PUT /api/sessions/:id - Update session
+app.put('/api/sessions/:id', (req, res) => {
+  const { id } = req.params;
+  const { date, muscle_groups } = req.body;
+
+  // Validation
+  if (!date) {
+    return res.status(400).json({ error: 'Date is required' });
+  }
+  if (!isValidDate(date)) {
+    return res.status(400).json({ error: 'Invalid date format. Use YYYY-MM-DD' });
+  }
+  if (!muscle_groups) {
+    return res.status(400).json({ error: 'Muscle groups are required' });
+  }
+  if (!isValidMuscleGroups(muscle_groups)) {
+    return res.status(400).json({
+      error: 'Invalid muscle groups. Must be a non-empty array containing: Chest, Legs, Delts, Lats, Triceps, Biceps'
+    });
+  }
+
+  // Update session
+  db.updateSession(id, date, muscle_groups, (err, session) => {
+    if (err) {
+      if (err.message === 'Session not found') {
+        return res.status(404).json({ error: 'Session not found' });
+      }
+      console.error('Error updating session:', err);
+      return res.status(500).json({ error: 'Failed to update session' });
+    }
+    res.json(session);
+  });
+});
+
+// DELETE /api/sessions/:id - Delete session
+app.delete('/api/sessions/:id', (req, res) => {
+  const { id } = req.params;
+
+  db.deleteSession(id, (err) => {
+    if (err) {
+      if (err.message === 'Session not found') {
+        return res.status(404).json({ error: 'Session not found' });
+      }
+      console.error('Error deleting session:', err);
+      return res.status(500).json({ error: 'Failed to delete session' });
+    }
+    res.status(204).send();
+  });
+});
+
+// Health check endpoint
+app.get('/health', (req, res) => {
+  res.json({ status: 'ok' });
+});
+
+// Start server
+app.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});
+
+// Graceful shutdown
+process.on('SIGINT', () => {
+  console.log('\nShutting down gracefully...');
+  db.closeDatabase();
+  process.exit(0);
+});