#!/bin/sh

# Copyright (C) 2017-2020 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 [ "$VERSION" != "5.0" ]; then
    printf 'This script upgrades 5.0 to 5.1. '
    printf 'Reported version is %s. Skipping upgrade.\n' "${VERSION}"
    exit 0
fi

mysql "$@" <<EOF

# Add missing 'client-id' and new 'flex-id' host identifier types.
INSERT INTO host_identifier_type VALUES (3, 'client-id');
INSERT INTO host_identifier_type VALUES (4, 'flex-id');

# Recreate the trigger removing dependent host entries.
DROP TRIGGER host_BDEL;

DELIMITER $$
CREATE TRIGGER host_BDEL BEFORE DELETE ON hosts FOR EACH ROW
-- Edit trigger body code below this line. Do not edit lines above this one
BEGIN
DELETE FROM ipv6_reservations WHERE ipv6_reservations.host_id = OLD.host_id;
DELETE FROM dhcp4_options WHERE dhcp4_options.host_id = OLD.host_id;
DELETE FROM dhcp6_options WHERE dhcp6_options.host_id = OLD.host_id;
END
$$
DELIMITER ;

# Update the schema version number
UPDATE schema_version
SET version = '5', minor = '1';
# This line concludes database upgrade to version 5.1.

EOF
