#!/usr/bin/env bash
#
# Stage the selected file to git bare repo
#
# @params
# Globals
#   ${mydir}: string, current directory of the executing script
#   ${new_file}: new file path to stage
#   ${new_folder}: new folder to stage
#   ${selected_files}: modified file to stage
# Arguments
#   -h: show help message
#   -f: select a file in PWD to stage
#   -d: select a directory in PWD to stage

set -e
set -f

mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source "${mydir}"/../helper/search_file.sh
source "${mydir}"/../helper/set_variable.sh
source "${mydir}"/../helper/git_query.sh

function usage() {
  echo -e "Usage: dotbare fadd [-h] [-f] [-d] ...\n"
  echo -e "Stage the selected file to the dotfile gitbare repo"
  echo -e "Press escape to stop staging file\n"
  echo -e "optional arguments:"
  echo -e "  -h\tshow this help message and exit"
  echo -e "  -f\tselect a file in current directory and stage it"
  echo -e "  -d\tselect a entire folder to stage"
}

#######################################
# stage file
# Arguments:
#   $1: files to stage
#######################################
function stage_file() {
  local file=$1
  if [[ -z "${file}" ]]
  then
    exit 1
  else
    # shellcheck disable=SC2086
    /usr/bin/git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" add ${file}
  fi
}

new_file=''
new_folder=''

while getopts ":fhd" opt
do
  case "$opt" in
    f)
      new_file=$(search_file 'f' | tr '\n' ' ')
      [[ -z "${new_file}" ]] && exit 1
      break
      ;;
    h)
      usage
      exit 0
      ;;
    d)
      new_folder=$(search_file 'd' | tr '\n' ' ')
      [[ -z "${new_folder}" ]] && exit 1
      break
      ;;
    *) 
      echo "Invalid option: ${OPTARG}" >&2
      usage
      exit 1
      ;;
  esac
done

if [[ -n "${new_file}" ]]; then
  stage_file "${new_file}"
elif [[ -n "${new_folder}" ]]; then
  stage_file "${new_folder}"
else
  selected_files=$(get_modified_file 'select files to stage' "unstaged" | tr '\n' ' ')
  stage_file "${selected_files}"
fi