pi-hole/advanced/Scripts/database_migration/gravity/2_to_3.sql

PRAGMA FOREIGN_KEYS=OFF;

ALTER TABLE regex RENAME TO regex_blacklist;

CREATE TABLE regex_blacklist_by_group
(
	regex_blacklist_id INTEGER NOT NULL REFERENCES regex_blacklist (id),
	group_id INTEGER NOT NULL REFERENCES "group" (id),
	PRIMARY KEY (regex_blacklist_id, group_id)
);

INSERT INTO regex_blacklist_by_group SELECT * FROM regex_by_group;
DROP TABLE regex_by_group;
DROP VIEW vw_regex;
DROP TRIGGER tr_regex_update;

CREATE VIEW vw_regex_blacklist AS SELECT DISTINCT domain
    FROM regex
    LEFT JOIN regex_blacklist_by_group ON regex_blacklist_by_group.regex_blacklist_id = regex_blacklist.id
    LEFT JOIN "group" ON "group".id = regex_blacklist_by_group.group_id
    WHERE regex_blacklist.enabled = 1 AND (regex_blacklist_by_group.group_id IS NULL OR "group".enabled = 1)
    ORDER BY regex_blacklist.id;

CREATE TRIGGER tr_regex_blacklist_update AFTER UPDATE ON regex_blacklist
    BEGIN
      UPDATE regex_blacklist SET date_modified = (cast(strftime('%s', 'now') as int)) WHERE domain = NEW.domain;
    END;


UPDATE info SET value = 3 WHERE property = 'version';