#!/bin/bash
case "$1" in
--help | -h)
  cat <<EOF

  Description:
  "git checkout" on steroids

  Usage:
  gc [--help|--new-branch] [branch]

  Options:
  -h, --help        Print this help.
  -b, --new-branch  Create a new Branch instead changing to an existing branch.

  Author:
  michael.grote@posteo.de - git.mgrote.net
EOF
  ;;
--new-branch | -b)
  (git checkout --quiet -b "$2" && git push --set-upstream "$(git remote | head -n 1)" "$2"  && echo '>>> Create new branch "'"$2"'"') || (git checkout --quiet "$2" > /dev/null 2>&1 && echo '>>> Branch     already exists, checking out... ')
  ;;
*)
  if [ -n "$1" ] ; then                                                                                                                                                                                             (echo ">>> Try local checkout" && git checkout --quiet "$1" > /dev/null 2>&1) || (echo ">>> Try remote checkout" && git checkout --quiet -b "$1" origin/"$1" > /dev/null 2>&1 || echo ">>> Unkown branch! ")
  else
    (git checkout --quiet master > /dev/null 2>&1 && echo '>>> Try checking out master') || (git checkout --quiet main > /dev/null 2>&1 && echo '>>> Try checking out main') || (git checkout --quiet release > /dev/null 2>&1 && echo '>>> Try checking out release')
  fi
esac