const Database = require('better-sqlite3');
const path = require('path');

const dbPath = path.resolve(__dirname, 'server/data/sensors.db');
console.log(`Connecting to database at ${dbPath}`);
const db = new Database(dbPath);

// 1. Verify Table Creation
console.log('Creating changelog table...');
try {
    db.exec(`
        CREATE TABLE IF NOT EXISTS changelog (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            date TEXT NOT NULL,
            user TEXT,
            text TEXT NOT NULL
        )
    `);
    console.log('PASS: Table creation successful (or already exists)');
} catch (err) {
    console.error('FAIL: Table creation failed:', err.message);
    process.exit(1);
}

// 2. Verify Insert
console.log('Inserting test entry...');
try {
    const stmt = db.prepare('INSERT INTO changelog (date, user, text) VALUES (?, ?, ?)');
    const info = stmt.run(new Date().toISOString(), 'test_user', 'Test changelog entry');
    console.log(`PASS: Insert successful, ID: ${info.lastInsertRowid}`);
} catch (err) {
    console.error('FAIL: Insert failed:', err.message);
    process.exit(1);
}

// 3. Verify Read
console.log('Reading entries...');
try {
    const rows = db.prepare('SELECT * FROM changelog ORDER BY id DESC LIMIT 5').all();
    console.table(rows);
    if (rows.length > 0 && rows[0].user === 'test_user') {
        console.log('PASS: Read verification successful');
    } else {
        console.error('FAIL: Read verification failed or data mismatch');
    }
} catch (err) {
    console.error('FAIL: Read failed:', err.message);
}