#!/bin/bash
set -e
[ -n "$DEBUG" ] && set -x

if [ "$1" = "-h" ]; then
	echo "usage: $(basename "${0}") DEPENDENCY [from] TO"
	echo
	exit 0
fi

dependency=$1
from=$2
to=$3

if [ -z "${dependency}" ]; then
	echo "error: missing dependency to bump, see -h" >&2
	exit 1
fi

if [ -z "${to}" ]; then
	to=$from
	from=$(git log --format=%b | awk "{ if(match(\$0,/[Uu]pdate ${dependency} from (.+) to (.+)$/,m)) print(m[2]); exit(0) }")
	if [ -z "${from}" ]; then
		# still no $from, let's give the user a choice using fzf
		from=$(git log --format=%b | awk "{ if(match(\$0,/[Uu]pdate (.+) from (.+) to (.+)$/,m)) print m[0] }" | fzf | sed 's#.*to \(.*\)$#\1#')
	fi
fi

if [ -z "${to}" ]; then
	echo "error: missing version to bump to, see -h" >&2
	exit 1
fi

git commit --edit --file <(
	cat <<-EOF
		Update ${dependency} to ${to}

		Update ${dependency} from ${from} to ${to}

		Change-type: patch
		Signed-off-by: $(git config user.name) $(git config user.signemail || git config user.email)
	EOF
)