#!/usr/bin/env bash
#
# Stage the selected file to git bare repo
#
# @params
# Globals
#   ${mydir}: string, current directory of the executing script
#   ${stage_type}: modified, new file, or directory to stage
#   ${selected_files}: bash array of user selected files to stage
# Arguments
#   -h|--help: show help message
#   -f|--file: select a file in PWD to stage
#   -d|--dir: 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 "Select files/directories or modified files through fzf."
  echo -e "Stage the selected file to the dotfile gitbare repo.\n"
  echo -e "Default: list all modified files and stage the selected files.\n"
  echo -e "optional arguments:"
  echo -e "  -h, --help\t\tshow this help message and exit."
  echo -e "  -f, --file\t\tselect files in current directory and stage the selected files."
  echo -e "  -d, --dir\t\tselect folders in current directory and stage the selected folders."
}

#######################################
# stage file
# Arguments:
#   $1: array of files to stage
#######################################
function stage_file() {
  local files=("$@")
  [[ "${#files[@]}" -eq 0 ]] && exit 1
  git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" add "${files[@]}"
}

stage_type="modified"
selected_files=()

while [[ "$#" -gt 0 ]]; do
  case "$1" in
    -f|--file)
      stage_type="file"
      shift
      ;;
    -d|--dir)
      stage_type="dir"
      shift
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "Invalid option: $1" >&2
      usage
      exit 1
      ;;
  esac
done

while IFS= read -r line; do
  selected_files+=("${line}")
done < <(
  if [[ "${stage_type}" == "file" ]]; then
    search_file 'f'
  elif [[ "${stage_type}" == "dir" ]]; then
    search_file 'd'
  else
    get_modified_file "select files to stage" "unstaged"
  fi
)

stage_file "${selected_files[@]}"