BEGIN;

CREATE TABLE users (
    id  IDENTITY PRIMARY KEY NOT NULL,
    gid UUID                 NOT NULL UNIQUE
);

CREATE TABLE collections (
    id      IDENTITY PRIMARY KEY NOT NULL,
    gid     UUID                 NOT NULL UNIQUE,
    user_id INT                  NOT NULL REFERENCES users(id),
    name    VARCHAR(256)         NOT NULL
);

CREATE TABLE artifacts (
    id    IDENTITY PRIMARY KEY NOT NULL,
    gid   UUID                 NOT NULL UNIQUE,
    state VARCHAR(256)         NOT NULL
);

CREATE TABLE collection_items (
    id            IDENTITY PRIMARY KEY NOT NULL,
    collection_id INT                  NOT NULL REFERENCES collections(id),
    artifact_id   INT                  NOT NULL REFERENCES artifacts(id)
);

CREATE TABLE artifact_data (
    id          IDENTITY PRIMARY KEY NOT NULL,
    artifact_id INT                  NOT NULL REFERENCES artifacts(id),
    k           VARCHAR(256)         NOT NULL,
    v           VARCHAR(256),         -- Maybe too short
    UNIQUE (artifact_id, k)
);

CREATE TABLE facets (
    id          IDENTITY PRIMARY KEY NOT NULL,
    artifact_id INT                  NOT NULL REFERENCES artifacts(id),
    name        VARCHAR(256)         NOT NULL,
    num         INT                  NOT NULL,
    output      VARCHAR(256)         NOT NULL,
    description VARCHAR(256),
    UNIQUE (artifact_id, output, num, name)
);

COMMIT;