#!/bin/bash
msg="$(head -1 "$1")"
# Let git handle an empty commit message
case "$msg" in (""|\#*) exit 0;; esac

scopes_file=".dev/scopes.txt"
# Join scopes to regex, skipping empty and commented lines
test -r "$scopes_file" &&
  scopes="($(grep -vE '^\s*(#|$)' "$scopes_file" | paste -sd '|' - ))"

echo "$msg" | grep -Eq "^(fix|feat|enhance|docs|style|refactor|test|build|rework|release|revert)(\(${scopes:-.*}(/.+)?\))?: [A-Za-z]"
result=$?
if test $result -ne 0
then printf "Invalid commit message: '$msg'
Please check the guidelines at https://karma-runner.github.io/6.4/dev/git-commit-msg.html$(test -n "$scopes" && echo " with the scope one of $scopes as defined in $scopes_file")" >&2
fi
exit $result