#!/usr/bin/env bash

# bump_version - increase the shared version and generate changelogs

set -o errexit
set -o pipefail

usage() {
    echo -e "bump_version - increase the shared version and generate changelogs"
    echo -e ""
    echo -e "Usage:"
    echo -e " $ bump_version <new_version>"
}

if [[ -z $1 ]]; then
    usage
    exit 1
fi

shared_version_file="./SharedVersion.cs"
build_file="./build.yaml"

new_version="$1"

# Parse the version from the AssemblyVersion
old_version="$(
    grep "AssemblyVersion" ${shared_version_file} \
        | sed -E 's/\[assembly: ?AssemblyVersion\("([0-9\.]+)"\)\]/\1/'
)"
echo $old_version

# Set the shared version to the specified new_version
old_version_sed="$( sed 's/\./\\./g' <<<"${old_version}" )" # Escape the '.' chars
new_version_sed="$( cut -f1 -d'-' <<<"${new_version}" )"
sed -i "s/${old_version_sed}/${new_version_sed}/g" ${shared_version_file}

old_version="$(
    grep "version:" ${build_file} \
        | sed -E 's/version: "([0-9\.]+[-a-z0-9]*)"/\1/'
)"
echo $old_version

# Set the build.yaml version to the specified new_version
old_version_sed="$( sed 's/\./\\./g' <<<"${old_version}" )" # Escape the '.' chars
sed -i "s/${old_version_sed}/${new_version}/g" ${build_file}

if [[ ${new_version} == *"-"* ]]; then
    new_version_deb="$( sed 's/-/~/g' <<<"${new_version}" )"
else
    new_version_deb="${new_version}-1"
fi

# Update the metapackage equivs file
debian_equivs_file="debian/metapackage/jellyfin"
sed -i "s/${old_version_sed}/${new_version}/g" ${debian_equivs_file}

# Write out a temporary Debian changelog with our new stuff appended and some templated formatting
debian_changelog_file="debian/changelog"
debian_changelog_temp="$( mktemp )"
# Create new temp file with our changelog
echo -e "jellyfin (${new_version_deb}) unstable; urgency=medium

  * New upstream version ${new_version}; release changelog at https://github.com/jellyfin/jellyfin/releases/tag/v${new_version}

 -- Jellyfin Packaging Team <packaging@jellyfin.org>  $( date --rfc-2822 )
" >> ${debian_changelog_temp}
cat ${debian_changelog_file} >> ${debian_changelog_temp}
# Move into place
mv ${debian_changelog_temp} ${debian_changelog_file}

# Write out a temporary Yum changelog with our new stuff prepended and some templated formatting
fedora_spec_file="fedora/jellyfin.spec"
fedora_changelog_temp="$( mktemp )"
fedora_spec_temp_dir="$( mktemp -d )"
fedora_spec_temp="${fedora_spec_temp_dir}/jellyfin.spec.tmp"
# Make a copy of our spec file for hacking
cp ${fedora_spec_file} ${fedora_spec_temp_dir}/
pushd ${fedora_spec_temp_dir}
# Split out the stuff before and after changelog
csplit jellyfin.spec  "/^%changelog/" # produces xx00 xx01
# Update the version in xx00
sed -i "s/${old_version_sed}/${new_version_sed}/g" xx00
# Remove the header from xx01
sed -i '/^%changelog/d' xx01
# Create new temp file with our changelog
echo -e "%changelog
* $( LANG=C date '+%a %b %d %Y' ) Jellyfin Packaging Team <packaging@jellyfin.org>
- New upstream version ${new_version}; release changelog at https://github.com/jellyfin/jellyfin/releases/tag/v${new_version}" >> ${fedora_changelog_temp}
cat xx01 >> ${fedora_changelog_temp}
# Reassembble
cat xx00 ${fedora_changelog_temp} > ${fedora_spec_temp}
popd
# Move into place
mv ${fedora_spec_temp} ${fedora_spec_file}
# Clean up
rm -rf ${fedora_spec_temp_dir}

# Stage the changed files for commit
git add ${shared_version_file} ${build_file} ${debian_equivs_file} ${debian_changelog_file} ${fedora_spec_file}
git status