backend-01

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CREATE TABLE IF NOT EXISTS users (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  username VARCHAR(255) NOT NULL,
  encrypted_password VARCHAR(255) NOT NULL,
  email VARCHAR(255) NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE IF NOT EXISTS tags (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  name VARCHAR(255) NOT NULL,
  user_id INTEGER NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS bills (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  title VARCHAR(255) NOT NULL,
  amount DECIMAL(10, 2) NOT NULL,
  due_date DATE NOT NULL,
  paid BOOLEAN DEFAULT FALSE,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id)
);

CREATE TABLE IF NOT EXISTS bill_tags (
  bill_id INTEGER NOT NULL,
  tag_id INTEGER NOT NULL,
  FOREIGN KEY (bill_id) REFERENCES bills(id),
  FOREIGN KEY (tag_id) REFERENCES tags(id)
);

CREATE TABLE IF NOT EXISTS incomes (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  title VARCHAR(255) NOT NULL,
  amount DECIMAL(10, 2) NOT NULL,
  income_type TEXT NOT NULL DEFAULT 'one_off',
  recurrence_period TEXT NOT NULL DEFAULT 'monthly',
  date DATE NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);