#!/bin/sh

get_version()
{
    (	
        cd $1
	git describe --tags | sed 's/^[^0-9]*//'
    )
}

get_timestamp_commit()
{
    (
        cd $1
	TIMESTAMP=$(git log -1 --date=short --format=%cd | sed 's/-/./g')
	COMMIT=$(git rev-parse --short HEAD)
	echo ${TIMESTAMP}.${COMMIT}
    )
}

do_subst() {
    sed -i "0,/^mpv (.*)/s/(.*)/(1:$1)/" debian/changelog	
    sed -i "s/^  \* local build.*/  \* local build with ffmpeg $2, libass $3/" debian/changelog
    sed -i "s/\(^ -- Local User <localuser@localhost>\).*/\1  $(date -R)/" debian/changelog
}

do_version_all() {
    do_subst $(get_version mpv) $(get_version ffmpeg) $(get_version libass)
}

do_timestamp_commit_all() {
   do_subst $(get_timestamp_commit mpv) $(get_timestamp_commit ffmpeg) $(get_timestamp_commit libass)
}

case "$1" in
    --master)
        do_timestamp_commit_all
        ;;
    --release|'')
        do_version_all
        ;;
    *)
        echo >&2 "$0 --master"
        echo >&2 "$0 --release"
        exit 0
        ;;
esac