USE billing;

CREATE TABLE reseller_phonebook
(
    id INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
    reseller_id INT(11) UNSIGNED NOT NULL,
    name VARCHAR(255) NOT NULL,
    number VARCHAR(255) NOT NULL,
    PRIMARY KEY (id),
    UNIQUE KEY rel_u_idx (reseller_id, number),
    KEY name_idx(name),
    KEY number_idx(number),
    CONSTRAINT pb_reseller_id_ref FOREIGN KEY (reseller_id) REFERENCES resellers (id) ON DELETE CASCADE ON UPDATE CASCADE
);

CREATE TABLE contract_phonebook
(
    id INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
    contract_id INT(11) UNSIGNED NOT NULL,
    name VARCHAR(255) NOT NULL,
    number VARCHAR(255) NOT NULL,
    PRIMARY KEY (id),
    UNIQUE KEY rel_u_idx (contract_id, number),
    KEY name_idx(name),
    KEY number_idx(number),
    CONSTRAINT pb_contract_id_ref FOREIGN KEY (contract_id) REFERENCES contracts (id) ON DELETE CASCADE ON UPDATE CASCADE
);

CREATE TABLE subscriber_phonebook
(
    id INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
    subscriber_id INT(11) UNSIGNED NOT NULL,
    name VARCHAR(255) NOT NULL,
    number VARCHAR(255) NOT NULL,
    shared TINYINT(1) NOT NULL DEFAULT '0',
    PRIMARY KEY (id),
    UNIQUE KEY rel_u_idx (subscriber_id, number),
    KEY name_idx(name),
    KEY number_idx(number),
    CONSTRAINT pb_subscriber_id_ref FOREIGN KEY (subscriber_id) REFERENCES voip_subscribers (id) ON DELETE CASCADE ON UPDATE CASCADE
);

DELIMITER //
CREATE TRIGGER phonebook_on_reseller_update AFTER UPDATE ON resellers
FOR EACH ROW
BEGIN
    IF new.status = 'terminated' THEN
        DELETE FROM reseller_phonebook WHERE reseller_id = old.id;
    END IF;
END; //
DELIMITER ;

DELIMITER //
CREATE TRIGGER phonebook_on_contract_update AFTER UPDATE ON contracts
FOR EACH ROW
BEGIN
    IF new.status = 'terminated' THEN
        DELETE FROM contract_phonebook WHERE contract_id = old.id;
    END IF;
END; //
DELIMITER ;

DELIMITER //
CREATE TRIGGER phonebook_on_subscriber_update AFTER UPDATE ON voip_subscribers
FOR EACH ROW
BEGIN
    IF new.status = 'terminated' THEN
        DELETE FROM subscriber_phonebook WHERE subscriber_id = old.id;
    END IF;
END; //
DELIMITER ;