#!/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

set -euo pipefail

old=$1
new=$2

test -z "$old" && echo "old remote name required." 1>&2 && exit 1
test -z "$new" && echo "new remote name required." 1>&2 && exit 1

if ! git config --get "remote.$old.fetch" > /dev/null; then
  echo "remote $old doesn't exist"
  exit 1
fi

if git config --get "remote.$new.fetch" > /dev/null; then
  git remote remove "$new"
fi
git remote rename "$old $new"
git remote -v
