CREATE TABLE users (
    id         INTEGER PRIMARY KEY AUTOINCREMENT,
    username   TEXT    NOT NULL UNIQUE,
    email      TEXT    NOT NULL UNIQUE,
    created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))
);

CREATE TABLE api_keys (
    id           INTEGER PRIMARY KEY AUTOINCREMENT,
    user_id      INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    key_hash     TEXT    NOT NULL UNIQUE,
    name         TEXT    NOT NULL,
    created_at   INTEGER NOT NULL DEFAULT (strftime('%s', 'now')),
    last_used_at INTEGER
);