#!/usr/bin/env bash
#
# interactive menu to select file/commit to edit
#
# @params
# Globals
#   ${mydir}: current directory of the script
#   ${edit_type}: which type to edit, all files, modified files, commit
#   ${selected_commit}: selected commit to edit
#   ${selected_files}: arrays of selected file to edit
# Arguments
#   -m|--modified: display modified file only
#   -c|--commit: edit commit using interactive rebase
#   -h|--help: show helpe message and exit

set -e
set -f

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

function usage() {
  echo -e "Usage: dotbare fedit [-h] [-m] [-c] ...

Select files/commits through fzf and edit selected files/commits in EDITOR.

Default: list all tracked dotfiles and edit the selected files.

Optional arguments:
  -h, --help\t\tshow this help message and exit.
  -m, --modified\tonly list and edit selected modified files.
  -c, --commit\t\tlist commit and edit the selected commit through interactive rebase."
}

edit_type="all"
selected_files=()
selected_commit=""

while [[ "$#" -gt 0 ]]; do
  case "$1" in
    -m|--modified)
      edit_type="modified"
      shift
      ;;
    -c|--commit)
      edit_type="commit"
      shift
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      echo "Invalid option: $1" >&2
      usage
      exit 1
      ;;
  esac
done

if [[ "${edit_type}" == "commit" ]]; then
  selected_commit=$(get_commit "select a commit to edit")
  [[ -z "${selected_commit}" ]] && exit 1
  git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" rebase -i "${selected_commit}"~
else
  while IFS= read -r line; do
    selected_files+=("${line}")
  done < <(
    if [[ "${edit_type}" == "modified" ]]; then
      get_modified_file "select files to edit"
    else
      get_git_file "select files to edit"
    fi
  )
  [[ "${#selected_files[@]}" -eq 0 ]] && exit 1
  exec "${EDITOR}" "${selected_files[@]}"
fi