#!/bin/sh

# Copyright (C) 2016-2020 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# shellcheck disable=SC1091
# SC1091: Not following: ... was not specified as input (see shellcheck -x).

# Exit with error if commands exit with non-zero and if undefined variables are
# used.
set -eu

# shellcheck disable=SC2034
# SC2034: ... appears unused. Verify use (or export if used externally).
prefix="/usr"

# Include utilities. Use installed version if available and
# use build version if it isn't.
if [ -e ${prefix}/share/kea/scripts/admin-utils.sh ]; then
    . "${prefix}/share/kea/scripts/admin-utils.sh"
else
    . "/build/kea/src/kea-1.9.3/src/bin/admin/admin-utils.sh"
fi

VERSION=$(mysql_version "$@")

if [ "$VERSION" != "2.0" ]; then
    printf 'This script upgrades 2.0 to 3.0. '
    printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
    exit 0
fi

mysql "$@" <<EOF
CREATE TABLE IF NOT EXISTS hosts (
host_id INT UNSIGNED NOT NULL AUTO_INCREMENT ,
dhcp_identifier VARBINARY(128) NOT NULL ,
dhcp_identifier_type TINYINT NOT NULL ,
dhcp4_subnet_id INT UNSIGNED NULL ,
dhcp6_subnet_id INT UNSIGNED NULL ,
ipv4_address INT UNSIGNED NULL ,
hostname VARCHAR(255) NULL ,
dhcp4_client_classes VARCHAR(255) NULL ,
dhcp6_client_classes VARCHAR(255) NULL ,
PRIMARY KEY (host_id) ,
INDEX key_dhcp4_identifier_subnet_id (dhcp_identifier ASC, dhcp_identifier_type ASC) ,
INDEX key_dhcp6_identifier_subnet_id (dhcp_identifier ASC, dhcp_identifier_type ASC, dhcp6_subnet_id ASC)
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS ipv6_reservations (
reservation_id INT NOT NULL AUTO_INCREMENT ,
address VARCHAR(39) NOT NULL ,
prefix_len TINYINT(3) UNSIGNED NOT NULL DEFAULT 128 ,
type TINYINT(4) UNSIGNED NOT NULL DEFAULT 0 ,
dhcp6_iaid INT UNSIGNED NULL ,
host_id INT UNSIGNED NOT NULL ,
PRIMARY KEY (reservation_id) ,
INDEX fk_ipv6_reservations_host_idx (host_id ASC) ,
CONSTRAINT fk_ipv6_reservations_Host
FOREIGN KEY (host_id )
REFERENCES hosts (host_id )
ON DELETE NO ACTION
ON UPDATE NO ACTION
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS dhcp4_options (
option_id INT UNSIGNED NOT NULL AUTO_INCREMENT ,
code TINYINT UNSIGNED NOT NULL ,
value BLOB NULL ,
formatted_value TEXT NULL ,
space VARCHAR(128) NULL ,
persistent TINYINT(1) NOT NULL DEFAULT 0 ,
dhcp_client_class VARCHAR(128) NULL ,
dhcp4_subnet_id INT NULL ,
host_id INT UNSIGNED NULL ,
PRIMARY KEY (option_id) ,
UNIQUE INDEX option_id_UNIQUE (option_id ASC) ,
INDEX fk_options_host1_idx (host_id ASC) ,
CONSTRAINT fk_options_host1
FOREIGN KEY (host_id )
REFERENCES hosts (host_id )
ON DELETE NO ACTION
ON UPDATE NO ACTION
) ENGINE = INNODB;

CREATE TABLE IF NOT EXISTS dhcp6_options (
option_id INT UNSIGNED NOT NULL AUTO_INCREMENT ,
code INT UNSIGNED NOT NULL ,
value BLOB NULL ,
formatted_value TEXT NULL ,
space VARCHAR(128) NULL ,
persistent TINYINT(1) NOT NULL DEFAULT 0 ,
dhcp_client_class VARCHAR(128) NULL ,
dhcp6_subnet_id INT NULL ,
host_id INT UNSIGNED NULL ,
PRIMARY KEY (option_id) ,
UNIQUE INDEX option_id_UNIQUE (option_id ASC) ,
INDEX fk_options_host1_idx (host_id ASC) ,
CONSTRAINT fk_options_host10
FOREIGN KEY (host_id )
REFERENCES hosts (host_id )
ON DELETE NO ACTION
ON UPDATE NO ACTION
) ENGINE = INNODB;

DELIMITER $$
CREATE TRIGGER host_BDEL BEFORE DELETE ON hosts FOR EACH ROW
-- Edit trigger body code below this line. Do not edit lines above this one
BEGIN
DELETE FROM ipv6_reservations WHERE ipv6_reservations.host_id = OLD.host_id;
END
$$
DELIMITER ;

UPDATE schema_version SET version='3', minor='0';
EOF
