#!/bin/bash -e

# Build Debian and RPM packages for the current Git HEAD.
#
# Usage: make-packages.sh [deb] [rpm]

# Get the location of this script.  Other scripts that we use must be in the
# same location.
scriptdir=$(dirname "$(realpath "$0")")

# Get the location of the rpm builder script.
rpmDir=$(dirname "$scriptdir")/rpm

# Include function library.
. ${scriptdir}/lib.sh

# Get the version based on Git state, and the Git commit ID.
version=${FORCE_VERSION:-$(git_auto_version)}
version=$(strip_v ${version})
sha=$(git_commit_id)

DOCKER_RUN_RM="docker run --rm --user $(id -u):$(id -g) -v $rpmDir:/rpm -v $(dirname "$(pwd)"):/code -w /code/$(basename "$(pwd)")"

# Determine if this is a release (i.e. corresponds exactly to a Git tag) or a
# snapshot.
release=true
case ${version} in
    *.post* )
    release=false
    ;;
esac

if [ "${PKG_NAME}" = networking-calico ]; then
    sed -i "s/version=\"0.0.0\"/version=\"${version}\"/" setup.py
fi

# Build the requested package types.
for package_type in "$@"; do

    case ${package_type} in

    deb )
        if [ "${PKG_NAME}" = felix ]; then
            # Felix is built with RHEL/UBI and links against libpcap.so.1. We need this patchelf
            # until Debian changes the soname from .0.8 to .1.
            # FIXME remove the following patchelf command once Debian dependency is updated.
            patchelf --replace-needed libpcap.so.1 libpcap.so.0.8 bin/calico-felix
        fi

        # The Debian version that we are about to generate.
        debver=${FORCE_VERSION_DEB:-$(git_version_to_deb "${version}")}
        debver=$(strip_v "${debver}")

        for series in focal jammy noble; do
                if ${release}; then
                        changelog_message="${NAME} v${debver} (from Git commit ${sha})."
                else
                        changelog_message="Development snapshot (from Git commit ${sha})."
                fi
                rm -f debian/changelog debian/changelog.dch
                dch --controlmaint --create --package "${PKG_NAME}" -v "${DEB_EPOCH}${debver}-$series" "${changelog_message}"
                dch --controlmaint --release ""

            excludes="${DPKG_EXCL:--I}"

            ${DOCKER_RUN_RM} calico-build/${series} dpkg-buildpackage ${excludes} -S -d | ts "[build $series]"
        done

        cat <<-EOF

    +---------------------------------------------------------------------------+
    | Debs have been built.                                                     |
    +---------------------------------------------------------------------------+

EOF
        ;;

    rpm )
        rpm_spec=rpm/${PKG_NAME}.spec
        if [ -f ${rpm_spec}.in ]; then
        debver=${FORCE_VERSION_RPM:-$(git_version_to_rpm "${version}")}
        debver=$(strip_v "${debver}")
        cp -f "${rpm_spec}.in" "${rpm_spec}"

        # Generate RPM version and release.
        IFS=_ read ver qual <<< "${debver}"
        if test "${qual}"; then
            rpmver=${ver}
            rpmrel=0.1.${qual}
        else
            rpmver=${ver}
            rpmrel=1
        fi

        # Update the Version: and Release: lines.
        sed -i "s/^Version:.*$/Version:        ${rpmver#*:}/" "${rpm_spec}"
        sed -i "s/^Release:.*$/Release:        ${rpmrel}%{?dist}/" "${rpm_spec}"

        # Add a stanza to the %changelog section.
        timestamp=$(date "+%a %b %d %Y")
        {
            cat <<EOF
* ${timestamp} Daniel Fox<dan.fox@tigera.io> ${rpmver}-${rpmrel}
EOF
            if ${release}; then
            cat <<EOF
  - ${NAME} v${version} (from Git commit ${sha}).
EOF
            else
            cat <<EOF
  - Development snapshot (from Git commit ${sha}).
EOF
            fi
            echo

        } | sed -i '/^%changelog/ r /dev/stdin' "${rpm_spec}"
        fi

        elversions=7
        for elversion in ${elversions}; do
        # Skip the rpm build if we are missing the matching build image.
        imageid=$(docker images -q "calico-build/centos${elversion}:latest")
        [ -n "$imageid" ] && ${DOCKER_RUN_RM} -e "EL_VERSION=el${elversion}" \
            -e FORCE_VERSION="${FORCE_VERSION}" \
            -e RPM_TAR_ARGS="${RPM_TAR_ARGS}" \
            "$imageid" /rpm/build-rpms
        done

        cat <<-EOF
    +---------------------------------------------------------------------------+
    | RPMs have been built at dist/rpms.                                        |
    +---------------------------------------------------------------------------+

EOF
        ;;

    * )
        echo "ERROR: unknown package type \"${package_type}\""
        exit 255
        ;;

    esac

done
