#!/usr/bin/env bash
# reset environment variables that could interfere with normal usage
unset GREP_OPTIONS
# put all utility functions here

# make a temporary file
git_extra_mktemp() {
    mktemp -t "$(basename "$0")".XXX
}

#
# check whether current directory is inside a git repository
#

is_git_repo() {
  git rev-parse --show-toplevel > /dev/null 2>&1
  result=$?
  if test $result != 0; then
    >&2 echo 'Not a git repo!'
    exit $result
  fi
}

is_git_repo

if test "$1" = "finish"; then
  test -z $2 && echo "bug <name> required." 1>&2 && exit 1
  branch=bug/$2
  git merge --no-ff $branch && git delete-branch $branch
else
  test -z $1 && echo "bug <name> required." 1>&2 && exit 1
  if test -n "$2"; then
    echo "too many arguments; if not finishing a bug, only <name> of new bug is expected" && exit 1
  fi
  branch=bug/$1
  git checkout -b $branch
fi
