#!/usr/bin/env bash
#
# update dotbare to latest master

set -e
set -f

mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

function usage() {
  echo -e "Usage: dotbare fupgrade [-h] ...\n"
  echo -e "Update dotbare to the latest version\n"
  echo -e "optional arguments:"
  echo -e "  -h, --help\t\tshow this help message and exit"
}

while [[ "$#" -gt 0 ]]; do
  case "$1" in
    -h|--helo)
      usage
      exit 0
      ;;
    *)
      echo "Invalid option: ${OPTARG}" >&2
      usage
      exit 1
      ;;
  esac
done

# rip from omz
# auto stash on rebase
resetAutoStash=$(git config --bool rebase.autoStash 2>&1)
git config rebase.autoStash true

# change directory to dotbare folder
cd "${mydir}/.."

echo "Updating dotbare ..."
if git pull --rebase --stat origin master; then
  echo "dotbare updated successfully"
  printf "Current dotbare version: %s\n" $(git describe --tags $(git rev-list --tags --max-count=1))
else
  echo "Something went wrong, please try again or fire up a issue at https://github.com/kazhala/dotbare"
fi

# reset autostack to original value
case "$resetAutoStash" in
  "")
    git config --unset rebase.autoStash
    ;;
  *)
    git config rebase.autoStash "${resetAutoStash}"
    ;;
esac