first commit

server.js

@@ -0,0 +1,129 @@
+import express from 'express';
+import cors from 'cors';
+import initSqlJs from 'sql.js';
+import { readFileSync, writeFileSync, existsSync } from 'fs';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const dbPath = join(__dirname, 'habits.db');
+
+let db;
+let SQL;
+
+async function initializeDatabase() {
+  SQL = await initSqlJs();
+
+  if (existsSync(dbPath)) {
+    const data = readFileSync(dbPath);
+    db = new SQL.Database(data);
+  } else {
+    db = new SQL.Database();
+    // Initialize tables
+    db.run(`
+      CREATE TABLE habits (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        name TEXT NOT NULL
+      );
+
+      CREATE TABLE habit_completions (
+        habit_id INTEGER,
+        completion_date TEXT,
+        PRIMARY KEY (habit_id, completion_date),
+        FOREIGN KEY (habit_id) REFERENCES habits(id) ON DELETE CASCADE
+      );
+    `);
+    saveDatabase();
+  }
+}
+
+function saveDatabase() {
+  const data = db.export();
+  writeFileSync(dbPath, Buffer.from(data));
+}
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+app.use(express.static(join(__dirname, 'public'))); // Serve static files from the 'public' directory
+
+// Initialize database before starting server
+await initializeDatabase();
+
+// Get all habits with their completion dates
+app.get('/api/habits', (req, res) => {
+  const habits = db.exec(`
+    SELECT 
+      h.id,
+      h.name,
+      GROUP_CONCAT(hc.completion_date) as completedDates
+    FROM habits h
+    LEFT JOIN habit_completions hc ON h.id = hc.habit_id
+    GROUP BY h.id
+  `)[0];
+
+  const formattedHabits = habits ? habits.values.map(([id, name, completedDates]) => ({
+    id,
+    name,
+    completedDates: completedDates ? completedDates.split(',') : []
+  })) : [];
+
+  res.json(formattedHabits);
+});
+
+// Add new habit
+app.post('/api/habits', (req, res) => {
+  const { name } = req.body;
+  db.run('INSERT INTO habits (name) VALUES (?)', [name]);
+  const id = db.exec('SELECT last_insert_rowid()')[0].values[0][0];
+  saveDatabase();
+  res.json({ id, name, completedDates: [] });
+});
+
+// Toggle habit completion
+app.post('/api/habits/:id/toggle', (req, res) => {
+  const { id } = req.params;
+  const { date } = req.body;
+
+  const existing = db.exec(
+    'SELECT * FROM habit_completions WHERE habit_id = ? AND completion_date = ?',
+    [id, date]
+  )[0];
+
+  if (existing) {
+    db.run(
+      'DELETE FROM habit_completions WHERE habit_id = ? AND completion_date = ?',
+      [id, date]
+    );
+  } else {
+    db.run(
+      'INSERT INTO habit_completions (habit_id, completion_date) VALUES (?, ?)',
+      [id, date]
+    );
+  }
+
+  saveDatabase();
+  res.json({ success: true });
+});
+
+// Update habit
+app.put('/api/habits/:id', (req, res) => {
+  const { id } = req.params;
+  const { name } = req.body;
+  db.run('UPDATE habits SET name = ? WHERE id = ?', [name, id]);
+  saveDatabase();
+  res.json({ success: true });
+});
+
+// Delete habit
+app.delete('/api/habits/:id', (req, res) => {
+  const { id } = req.params;
+  db.run('DELETE FROM habits WHERE id = ?', [id]);
+  saveDatabase();
+  res.json({ success: true });
+});
+
+const PORT = 5000;
+app.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});