CREATE TABLE boards (
    board_id VARCHAR(5) PRIMARY KEY,
    board_name VARCHAR(32) NOT NULL,
    options JSON
);

CREATE TABLE threads (
    board_id VARCHAR(5) NOT NULL,
    thread_id BIGINT NOT NULL,
    thread_name VARCHAR(32),
    posts_ids BIGINT[],
    is_locked boolean NOT NULL,
    is_pinned boolean NOT NULL,
    options VARCHAR(255),
    PRIMARY KEY(board_id, thread_id)
);

CREATE TABLE media (
    media_id VARCHAR(32) PRIMARY KEY -- format: ${thread_id}-${media_number}.${ext}
);

CREATE TABLE posts (
    board_id VARCHAR(5) NOT NULL,
    thread_id BIGINT NOT NULL,
    post_id BIGINT NOT NULL,
    options VARCHAR(255),
    content TEXT NOT NULL,
    media_ids VARCHAR(22)[],
    is_root BOOL NOT NULL,
    timestamp TIMESTAMP NOT NULL,
    user_ip CIDR NOT NULL,
    PRIMARY KEY(board_id, thread_id, post_id)
);

CREATE TABLE admins (
    login VARCHAR(16) PRIMARY KEY,
    password_hash CHAR(60) NOT NULL,
    privilege_name VARCHAR(16) NOT NULL
);

CREATE TABLE privileges (
    privilege_name VARCHAR(16) PRIMARY KEY,
    access_level INT2 NOT NULL
);

CREATE TABLE bans (
    ban_id SERIAL8 PRIMARY KEY,
    user_ip CIDR NOT NULL,
    duration INT8, -- duration in seconds
    reason VARCHAR(255),
    date DATE NOT NULL,
    admin_issued VARCHAR(16) NOT NULL
);