usage() {
  echo "usage: git now rebase [--mine|-m] [<base-branch>]"
}


cmd_default() {
  parse_args "$@"

  WORKING_BRANCH=$(git_current_branch)
  INITIAL_COMMIT=$(git_now_initial_commit)

  if [ -n "$BASE_BRANCH" ]; then
    COMMON_ANCESTOR_COMMIT=`git merge-base ${BASE_BRANCH} ${WORKING_BRANCH}`
    if flag mine; then
      FIRST_NOW_COMMIT=$(git_now_my_first_commit $COMMON_ANCESTOR_COMMIT)
    else
      FIRST_NOW_COMMIT=$(git_now_first_commit $COMMON_ANCESTOR_COMMIT)
    fi

    if [ "$FIRST_NOW_COMMIT" != "$INITIAL_COMMIT" ]; then
      git rebase -i ${FIRST_NOW_COMMIT}^
    else
      git checkout ${FIRST_NOW_COMMIT}
      git commit --amend
      git rebase --onto HEAD ${FIRST_NOW_COMMIT} ${WORKING_BRANCH}
    fi
  else
    if flag mine; then
      FIRST_NOW_COMMIT=$(git_now_my_first_commit)
    else
      FIRST_NOW_COMMIT=$(git_now_first_commit)
    fi

    if [ "$FIRST_NOW_COMMIT" != "$INITIAL_COMMIT" ]; then
      git rebase -i ${FIRST_NOW_COMMIT}^
    else
      git checkout ${FIRST_NOW_COMMIT}
      git commit --amend
      git rebase --onto HEAD ${FIRST_NOW_COMMIT} ${WORKING_BRANCH}
    fi
  fi
}

cmd_help() {
  usage
  exit 0
}

parse_args() {
  # parse options
  DEFINE_boolean 'mine' false 'limit git-now commits by my name' 'm'
  FLAGS "$@" || exit $?
  eval set -- "${FLAGS_ARGV}"

  # read arguments into global variables
  BASE_BRANCH=$1
}

# vim: set ff=unix ft=sh :