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

const db = new Database(path.join(__dirname, '../data/monitor.db'));

// Create tables
db.exec(`
  CREATE TABLE IF NOT EXISTS resources (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL,
    url TEXT NOT NULL,
    type TEXT NOT NULL DEFAULT 'http',
    check_interval INTEGER DEFAULT 60000,
    timeout INTEGER DEFAULT 5000,
    enabled INTEGER DEFAULT 1,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
  );

  CREATE TABLE IF NOT EXISTS checks (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    resource_id INTEGER NOT NULL,
    status TEXT NOT NULL,
    response_time INTEGER,
    status_code INTEGER,
    error_message TEXT,
    checked_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (resource_id) REFERENCES resources(id) ON DELETE CASCADE
  );

  CREATE TABLE IF NOT EXISTS incidents (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    resource_id INTEGER NOT NULL,
    started_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    resolved_at DATETIME,
    notified INTEGER DEFAULT 0,
    FOREIGN KEY (resource_id) REFERENCES resources(id) ON DELETE CASCADE
  );

  CREATE INDEX IF NOT EXISTS idx_checks_resource_id ON checks(resource_id);
  CREATE INDEX IF NOT EXISTS idx_checks_checked_at ON checks(checked_at);
  CREATE INDEX IF NOT EXISTS idx_incidents_resource_id ON incidents(resource_id);
`);

module.exports = db;