-- Updates from version 0.3-stable

TRUNCATE messages;
DROP INDEX IF EXISTS messages_index_idx;
CREATE INDEX messages_index_idx ON messages (user_id, cache_key, idx);
DROP INDEX contacts_user_id_idx;
CREATE INDEX contacts_user_id_idx ON contacts (user_id, email);

-- Updates from version 0.3.1

DROP INDEX identities_user_id_idx;
CREATE INDEX identities_user_id_idx ON identities (user_id, del);

ALTER TABLE identities ADD changed timestamp with time zone DEFAULT now() NOT NULL;

CREATE SEQUENCE contactgroups_ids
    INCREMENT BY 1
    NO MAXVALUE
    NO MINVALUE
    CACHE 1;

CREATE TABLE contactgroups (
    contactgroup_id integer DEFAULT nextval('contactgroups_ids'::text) PRIMARY KEY,
    user_id 	integer		NOT NULL
        REFERENCES users(user_id) ON DELETE CASCADE ON UPDATE CASCADE,
    changed 	timestamp with time zone DEFAULT now() NOT NULL,
    del 	smallint 	NOT NULL DEFAULT 0,
    name 	varchar(128) 	NOT NULL DEFAULT ''
);

CREATE INDEX contactgroups_user_id_idx ON contactgroups (user_id, del);

CREATE TABLE contactgroupmembers (
    contactgroup_id 	integer NOT NULL
	REFERENCES contactgroups(contactgroup_id) ON DELETE CASCADE ON UPDATE CASCADE,
    contact_id 		integer NOT NULL
	REFERENCES contacts(contact_id) ON DELETE CASCADE ON UPDATE CASCADE,
    created timestamp with time zone DEFAULT now() NOT NULL,
    PRIMARY KEY (contactgroup_id, contact_id)
);

-- Updates from version 0.4-beta

ALTER TABLE users ALTER last_login DROP NOT NULL;
ALTER TABLE users ALTER last_login SET DEFAULT NULL;

-- Updates from version 0.4.2

DROP INDEX users_username_id_idx;
ALTER TABLE users ADD UNIQUE (username, mail_host);
ALTER TABLE contacts ALTER email TYPE varchar(255);