DROP TABLE IF EXISTS user;
DROP TABLE IF EXISTS post;
DROP TABLE IF EXISTS user_settings;

CREATE TABLE user (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  username TEXT UNIQUE NOT NULL,
  password TEXT NOT NULL
);

CREATE TABLE post (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  author_id INTEGER NOT NULL,
  created TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  title TEXT NOT NULL,
  body TEXT NOT NULL,
  FOREIGN KEY (author_id) REFERENCES user (id)
);

CREATE TABLE user_settings (
  user_id INTEGER PRIMARY KEY AUTOINCREMENT REFERENCES user (id),
  lang VARCHAR(3) NOT NULL,  -- e.g. en/jp; may add support for other (possibly 3-long) codes later
  theme VARCHAR(5) NOT NULL -- "light" or "dark"
);