CREATE TABLE IF NOT EXISTS users (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  username TEXT UNIQUE NOT NULL,
  password TEXT NOT NULL,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS records (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  type TEXT NOT NULL CHECK(type IN ('income', 'expense')),
  amount REAL NOT NULL,
  category TEXT NOT NULL,
  date DATETIME NOT NULL,
  note TEXT,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS recurring_bills (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  type TEXT NOT NULL CHECK(type IN ('income', 'expense')),
  amount REAL NOT NULL,
  category TEXT NOT NULL,
  day INTEGER NOT NULL,
  note TEXT,
  is_active INTEGER DEFAULT 1,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS categories (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  type TEXT NOT NULL CHECK(type IN ('income', 'expense')),
  name TEXT NOT NULL,
  icon TEXT NOT NULL,
  is_default INTEGER DEFAULT 0,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS migrations (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  name TEXT NOT NULL,
  executed_at DATETIME DEFAULT CURRENT_TIMESTAMP
);