CREATE TABLE alerts (
    id            INTEGER PRIMARY KEY AUTOINCREMENT,
    fingerprint   TEXT    NOT NULL UNIQUE,
    name          TEXT    NOT NULL,
    status        TEXT    NOT NULL CHECK(status IN ('firing', 'resolved')),
    labels        TEXT    NOT NULL DEFAULT '{}',
    annotations   TEXT    NOT NULL DEFAULT '{}',
    starts_at     INTEGER NOT NULL,
    ends_at       INTEGER,
    generator_url TEXT    NOT NULL DEFAULT '',
    received_at   INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))
);

CREATE INDEX alerts_status_idx     ON alerts(status);
CREATE INDEX alerts_name_idx       ON alerts(name);
CREATE INDEX alerts_received_at_idx ON alerts(received_at DESC);