CREATE TABLE IF NOT EXISTS account_message_restrictions (
	user_id bigint PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
	restricted boolean NOT NULL DEFAULT false,
	version bigint NOT NULL DEFAULT 0,
	restricted_since timestamptz,
	restricted_until timestamptz,
	reason text NOT NULL DEFAULT '',
	actor text NOT NULL DEFAULT '',
	command_id text NOT NULL DEFAULT '',
	updated_at timestamptz NOT NULL DEFAULT now(),
	CONSTRAINT account_message_restrictions_user_id_check CHECK (user_id > 0),
	CONSTRAINT account_message_restrictions_shape_check CHECK (
		(restricted AND restricted_since IS NOT NULL
			AND (restricted_until IS NULL OR restricted_until > restricted_since)
			AND (restricted_until IS NULL OR restricted_until <= to_timestamp(2147483647)))
		OR
		(NOT restricted AND restricted_since IS NULL AND restricted_until IS NULL)
	)
);

CREATE INDEX IF NOT EXISTS account_message_restrictions_restricted_idx
	ON account_message_restrictions (user_id)
	WHERE restricted;