#!/bin/bash
#
# interactive git status menu
# allow staging ustaging actions
#
# @params
# Globals
#   ${mydir}: current directory of where the script is running
#   ${selected_files}: selected file to stage or unstage
#   ${stage_file}: determine if current operation should be staging file or unstage
# Arguments
#   -h: show help message and exit

set -e
set -f

mydir="${0%/*}"
source "${mydir}"/../helper/set_variable.sh
source "${mydir}"/../helper/git_query.sh

function usage() {
  echo -e "Usage: dotbare fstat [-h] ...\n"
  echo -e "Display interactive git status menu"
  echo -e "Stage, unstage, interactively\n"
  echo -e "optional arguments:"
  echo -e "  -h\t\tshow this help message and exit"
}

while getopts ":h" opt; do
  case "$opt" in
    h)
      usage
      exit 0
      ;;
    *)
      echo "Invalid option: ${OPTARG}" >&2
      usage
      exit 1
      ;;
  esac
done

while true; do
  selected_files=$(get_modified_file "select a file" "all" "raw")
  [[ -z "${selected_files}" ]] && break
  # check if current operation should stage file or unstage file
  stage_file=$(echo "${selected_files}" | awk '{
    if ($0 ~ /^[A-Za-z][A-Za-z].*$/) {
      print "stage"
    } else if ($0 ~ /^[ \t].*$/) {
      print "stage"
    }
  }')
  selected_files=$(echo "${selected_files}" | awk -v home="${DOTBARE_TREE}" '{
    print home "/" $2
  }')
  if [[ -z "${stage_file}" ]]; then
    # shellcheck disable=SC2086
    /usr/bin/git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" reset --quiet HEAD ${selected_files}
  else
    # shellcheck disable=SC2086
    /usr/bin/git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" add ${selected_files}
  fi
done