CREATE TABLE master_identity (
    id          int PRIMARY KEY CHECK (id = 1),
    private_key bytea NOT NULL,
    created_at  timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE agents (
    id            bigserial PRIMARY KEY,
    name          text NOT NULL UNIQUE,
    token_hash    text NOT NULL UNIQUE,
    hostname      text NOT NULL DEFAULT '',
    agent_version text NOT NULL DEFAULT '',
    swarm_manager boolean NOT NULL DEFAULT false,
    last_seen_at  timestamptz,
    revoked_at    timestamptz,
    created_at    timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE services (
    id               bigserial PRIMARY KEY,
    kind             text NOT NULL CHECK (kind IN ('compose', 'swarm', 'container')),
    location_key     text NOT NULL UNIQUE,
    agent_id         bigint REFERENCES agents (id),
    compose_project  text NOT NULL DEFAULT '',
    compose_service  text NOT NULL DEFAULT '',
    working_dir      text NOT NULL DEFAULT '',
    swarm_cluster_id text NOT NULL DEFAULT '',
    swarm_service    text NOT NULL DEFAULT '',
    container_name   text NOT NULL DEFAULT '',
    image_repo       text NOT NULL,
    actual_ref       text NOT NULL,
    actual_digest    text NOT NULL DEFAULT '',
    status           text NOT NULL,
    self             boolean NOT NULL DEFAULT false,
    update_mode      text NOT NULL DEFAULT 'manual' CHECK (update_mode IN ('manual', 'auto')),
    first_seen_at    timestamptz NOT NULL,
    updated_at       timestamptz NOT NULL,
    removed_at       timestamptz
);

CREATE TABLE sessions (
    id         text PRIMARY KEY,
    subject    text NOT NULL,
    name       text NOT NULL DEFAULT '',
    email      text NOT NULL DEFAULT '',
    csrf_token text NOT NULL,
    expires_at timestamptz NOT NULL
);