#!/bin/bash
set -ex


function get_ebuild() {
    ls -- *-r*.ebuild
}

function get_revision() {
    local ebuild; ebuild="$(ls -- *-r*.ebuild)"
    local ebuild="${ebuild%.ebuild}"
    local revision="${ebuild#*-r}"
    echo "${revision}"
}

DIR="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
COS_KERNEL="$(realpath ${DIR}/../../../project-lakitu/sys-kernel/lakitu-kernel-5_15/)"
COS_EBUILD="$(ls -- "${COS_KERNEL}"/lakitu-kernel-5_15*r*.ebuild)"
COS_EBUILD_VERSION="$(echo "${COS_EBUILD}" | sed 's/.*lakitu-kernel-5_15-\([0-9\.]*\)-.*/\1/')"
VERSIONS=$(cat "${COS_EBUILD}" | grep CROS_WORKON_)
EBUILD="$(get_ebuild)"
BASE_EBUILD="$(realpath "${EBUILD}")"
REV="$(get_revision)"
NEXT_REV=$((REV+1))
for line in ${VERSIONS}; do
    sed -i "s,${line%=*}=.*,${line}," "${BASE_EBUILD}"
done
NEW_BASE_NAME="lakitu-kernel-5_15-${COS_EBUILD_VERSION}"
mv "${BASE_EBUILD}" "${NEW_BASE_NAME}.ebuild"
rm "${EBUILD}"
ln -s "${NEW_BASE_NAME}.ebuild" "${NEW_BASE_NAME}-r${NEXT_REV}.ebuild"