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

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

git_extra_default_branch() {
    local extras_default_branch init_default_branch
    extras_default_branch=$(git config --get git-extras.default-branch)
    init_default_branch=$(git config --get init.defaultBranch)
    if [ -n "$extras_default_branch" ]; then
        echo "$extras_default_branch"
    elif [ -n "$init_default_branch" ]; then
        echo "$init_default_branch"
    else
        echo "main"
    fi
}
#
# 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
#
# check whether current directory contains any git commit
#

has_git_commit() {
  git rev-parse --short HEAD > /dev/null 2>&1
  result=$?
  if test $result != 0; then
    >&2 echo 'Not git commit found!'
    exit $result
  fi
}

has_git_commit

if test "$1" = "--all"; then
  git shortlog -n -s | awk '{print substr($0,index($0,$2)) " (" $1 ")"}'
  echo
fi

echo total "$(git rev-list --count HEAD)"
