import sqlite3 from 'sqlite3';
import { open, Database } from 'sqlite';

let db: Database | null = null;

export async function getDb() {
    if (db) return db;

    // Enable verbose mode for debugging
    sqlite3.verbose();

    db = await open({
        filename: './dashboard.db',
        driver: sqlite3.Database
    });

    await db.exec(`
    CREATE TABLE IF NOT EXISTS uptime_logs (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      service_name TEXT NOT NULL,
      url TEXT NOT NULL,
      status TEXT NOT NULL,
      latency INTEGER,
      timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
    );

    CREATE TABLE IF NOT EXISTS visitors (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      ip_hash TEXT,
      city TEXT,
      country TEXT,
      lat REAL,
      lon REAL,
      timestamp DATETIME DEFAULT CURRENT_TIMESTAMP
    );
  `);

    return db;
}