create table meta
(
    version_num int not null
);

create table controllers
(
    id          VARCHAR(33) not null
        primary key
        unique,
    name        VARCHAR(128),
    ip          VARCHAR(16),
    port        INTEGER,
    relay_count INTEGER,
    active      BOOLEAN     not null
);

create table relays
(
    id                 INTEGER     not null
        primary key
        unique,
    name               VARCHAR(128),
    number             INTEGER     not null,
    controller_id      VARCHAR(33) not null
        references controllers (id),
    active_schedule_id VARCHAR(33)
        references schedules
);

create table schedules
(
    id      VARCHAR(33) not null
        primary key
        unique,
    name    VARCHAR(128),
    periods BLOB
);