DROP DATABASE IF EXISTS locutus;
CREATE DATABASE locutus;

\c locutus

\set id_regex '''^[A-Za-z0-9_-]{43}$'''

CREATE TABLE domains
(
    domain_id   CHAR(43)     NOT NULL,
    domain_name VARCHAR(256) NOT NULL,

    CONSTRAINT pk_domains PRIMARY KEY (domain_id),
    CONSTRAINT sk_domains UNIQUE (domain_name),
    CONSTRAINT domains_domain_name CHECK (domain_name ~ '^([a-z0-9_-]+\.)+[a-z]{2,}$'),
    CONSTRAINT domains_domain_id CHECK (domain_id ~ :id_regex)
);

CREATE TABLE accounts
(
    account_id   CHAR(43)     NOT NULL,
    domain_id    CHAR(43)     NOT NULL,
    account_name VARCHAR(256) NOT NULL,

    CONSTRAINT pk_accounts PRIMARY KEY (account_id),
    CONSTRAINT sk_accounts UNIQUE (domain_id, account_name),
    CONSTRAINT fk_accounts_domains FOREIGN KEY (domain_id) REFERENCES domains (domain_id),
    CONSTRAINT accounts_account_id CHECK (account_id ~ :id_regex)
);

CREATE TABLE rooms
(
    room_id   CHAR(43) NOT NULL,
    room_name VARCHAR(256),

    CONSTRAINT pk_rooms PRIMARY KEY (room_id),
    CONSTRAINT rooms_room_id CHECK (room_id ~ :id_regex)
);

CREATE TABLE events
(
    event_id        CHAR(43)                    NOT NULL,
    room_id         CHAR(43)                    NOT NULL,
    from_member_id  CHAR(43)                    NOT NULL,
    from_session_id CHAR(43)                    NOT NULL,
    to_session_id   CHAR(43)                             DEFAULT NULL,

    client_ts       TIMESTAMP WITHOUT TIME ZONE          DEFAULT NULL,
    client_tz       INTEGER                              DEFAULT NULL,
    server_ts       TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT (now() at time zone 'utc'),
    server_tz       INTEGER                              DEFAULT NULL,
    domain_ts       TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT (now() at time zone 'utc'),
    domain_tz       INTEGER                              DEFAULT NULL,

    data            JSONB                       NOT NULL,

    CONSTRAINT pk_events PRIMARY KEY (event_id),
    CONSTRAINT sk_events UNIQUE (room_id, event_id),
    CONSTRAINT fk_events_rooms FOREIGN KEY (room_id) REFERENCES rooms (room_id),
    CONSTRAINT events_event_id CHECK (event_id ~ :id_regex),
    CONSTRAINT events_from_member_id CHECK (from_member_id ~ :id_regex),
    CONSTRAINT events_from_session_id CHECK (from_session_id ~ :id_regex),
    CONSTRAINT events_to_session_id CHECK (to_session_id ~ :id_regex)
);
CREATE INDEX idx_events_client_ts ON events (client_ts);
CREATE INDEX idx_events_server_ts ON events (server_ts);
CREATE INDEX idx_events_domain_ts ON events (domain_ts);

CREATE TABLE members
(
    member_id          CHAR(43) NOT NULL,
    domain_id          CHAR(43) NOT NULL,
    room_id            CHAR(43) NOT NULL,
    account_id         CHAR(43),
    last_event_domain  CHAR(43),
    last_event_session CHAR(43),
    last_event_read    CHAR(43),

    CONSTRAINT pk_members PRIMARY KEY (member_id),
    CONSTRAINT sk_members UNIQUE (member_id, room_id),
    CONSTRAINT fk_members_domains FOREIGN KEY (domain_id) REFERENCES domains (domain_id),
    CONSTRAINT fk_members_rooms FOREIGN KEY (room_id) REFERENCES rooms (room_id),
    CONSTRAINT fk_members_accounts FOREIGN KEY (account_id) REFERENCES accounts (account_id),
    CONSTRAINT fk_members_last_event_domain FOREIGN KEY (room_id, last_event_domain) REFERENCES events (room_id, event_id),
    CONSTRAINT fk_members_last_event_session FOREIGN KEY (room_id, last_event_session) REFERENCES events (room_id, event_id),
    CONSTRAINT fk_members_last_event_read FOREIGN KEY (room_id, last_event_read) REFERENCES events (room_id, event_id),
    CONSTRAINT members_member_id CHECK (member_id ~ :id_regex)
);

CREATE TABLE sessions
(
    session_id    CHAR(43)                    NOT NULL,
    account_id    CHAR(43)                    NOT NULL,
    session_nr    INTEGER                     NOT NULL DEFAULT 1,
    session_token VARCHAR(256)                NOT NULL,
    session_name  VARCHAR(256)                         DEFAULT NULL,
    active        BOOLEAN                     NOT NULL DEFAULT TRUE,

    first_used    TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT (now() at time zone 'utc'),
    first_used_tz INTEGER                              DEFAULT NULL,
    last_used     TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT (now() at time zone 'utc'),
    last_used_tz  INTEGER                              DEFAULT NULL,

    CONSTRAINT pk_sessions PRIMARY KEY (session_id),
    CONSTRAINT sk_sessions_1 UNIQUE (account_id, session_nr),
    CONSTRAINT sk_sessions_2 UNIQUE (session_token),
    CONSTRAINT fk_sessions_accounts FOREIGN KEY (account_id) REFERENCES accounts (account_id)
);

INSERT INTO domains (domain_id, domain_name)
VALUES ('wk2jFJku_7VvpM2hFIz2XBO0Yka9tLHwc6V0Yk8oYLA', 'necronda.net');

INSERT INTO accounts (account_id, domain_id, account_name)
VALUES ('g_Ip_bkfpfT73USemt16PCyGcLKBkPmclVjsrKv51Po', 'wk2jFJku_7VvpM2hFIz2XBO0Yka9tLHwc6V0Yk8oYLA', 'lorenz'),
       ('X1j7UKLCwMTB3DbTuZvJxOBGoVDnApCjI894yAE7RFc', 'wk2jFJku_7VvpM2hFIz2XBO0Yka9tLHwc6V0Yk8oYLA', 'tom');

INSERT INTO rooms (room_id, room_name)
VALUES ('60nc0XXDIYUh6QzX4p0rMpCdzDmxghZLZk8dLuQh628', NULL);

INSERT INTO members (member_id, domain_id, room_id, account_id)
VALUES ('AbyhKNXgv4FDsm5Iq2p0RSHZr0cJ1ueBDL0UDMnV__4', 'wk2jFJku_7VvpM2hFIz2XBO0Yka9tLHwc6V0Yk8oYLA',
        '60nc0XXDIYUh6QzX4p0rMpCdzDmxghZLZk8dLuQh628', 'g_Ip_bkfpfT73USemt16PCyGcLKBkPmclVjsrKv51Po'),
       ('vs2C345OEZVqxxWxTAX5EfCjTxyM8cpp0993sP0vZ7M', 'wk2jFJku_7VvpM2hFIz2XBO0Yka9tLHwc6V0Yk8oYLA',
        '60nc0XXDIYUh6QzX4p0rMpCdzDmxghZLZk8dLuQh628', 'X1j7UKLCwMTB3DbTuZvJxOBGoVDnApCjI894yAE7RFc');