RetroDECK/functions/configurator_functions.sh

#!/bin/bash


find_empty_rom_folders() {
  # This function will build an array of all the system subfolders in $roms_folder which are either empty or contain only systeminfo.txt for easy removal

  if [[ -f "$godot_empty_roms_folders" ]]; then
    rm -f "$godot_empty_roms_folders" # Godot data transfer temp files
  fi
  touch "$godot_empty_roms_folders"

  empty_rom_folders_list=()
  all_empty_folders=()

  # Extract helper file names using jq and populate the all_helper_files array
  all_helper_files=($(jq -r '.helper_files | to_entries | .[] | .value.filename' "$features"))

  for system in $(find "$roms_folder" -mindepth 1 -maxdepth 1 -type d -printf '%f\n')
  do
    local dir="$roms_folder/$system"
    local files=$(ls -A1 "$dir")
    local count=$(ls -A "$dir" | wc -l)

    if [[ $count -eq 0 ]]; then
        # Directory is empty
        empty_rom_folders_list=("${empty_rom_folders_list[@]}" "false" "$(realpath $dir)")
        all_empty_folders=("${all_empty_folders[@]}" "$(realpath $dir)")
        echo "$(realpath $dir)" >> "$godot_empty_roms_folders" # Godot data transfer temp file
    elif [[ $count -eq 1 ]] && [[ "$(basename "${files[0]}")" == "systeminfo.txt" ]]; then
        # Directory contains only systeminfo.txt
        empty_rom_folders_list=("${empty_rom_folders_list[@]}" "false" "$(realpath $dir)")
        all_empty_folders=("${all_empty_folders[@]}" "$(realpath $dir)")
        echo "$(realpath $dir)" >> "$godot_empty_roms_folders" # Godot data transfer temp file
    elif [[ $count -eq 2 ]] && [[ "$files" =~ "systeminfo.txt" ]]; then
      contains_helper_file="false"
      for helper_file in "${all_helper_files[@]}" # Compare helper file list to dir file list
      do
        if [[ "$files" =~ "$helper_file" ]]; then
          contains_helper_file="true" # Helper file was found
          break
        fi
      done
      if [[ "$contains_helper_file" == "true" ]]; then
        # Directory contains only systeminfo.txt and a helper file
        empty_rom_folders_list=("${empty_rom_folders_list[@]}" "false" "$(realpath $dir)")
        all_empty_folders=("${all_empty_folders[@]}" "$(realpath $dir)")
        echo "$(realpath $dir)" >> "$godot_empty_roms_folders" # Godot data transfer temp file
      fi
    fi
  done
}