restore-nvim.zsh

# Restore your backed up nvim config. Use the backup-nvim.zsh script to create the backup.
restore-nvim() {
  local backup_array=(${(f)"$(command ls -1d ~/.config/nvim.* | sort -nr | sed -e 's/.*nvim/nvim/')"})

  if [ $#backup_array = 0 ]; then
    echo "No backup directory found"
    return 1
  fi
  for ((i = 1; i <= $#backup_array; i++)) print -r -- "[$i] $backup_array[i]"

  # select backup directory
  echo ""
  echo -n "Select index: "
  re='^[0-9]+$'
  read index
  if ! [[ $index =~ $re ]] ; then
    echo "Error: Not a number"
    return 1
  fi
  if [ $index -gt $#backup_array ]; then
    echo "index must be less than $#backup_array"
    return 1
  fi
  if [ $index -lt 1 ]; then
    echo "index must be greater than 1"
    return 1
  fi
  local selected=$backup_array[$index]
  echo "Selected: $selected"
  local backup_config="$HOME/.config/$selected"
  local backup_share="$HOME/.local/share/$selected"
  local backup_state="$HOME/.local/state/$selected"
  local backup_cache="$HOME/.cache/$selected"

  if [ ! -d $backup_config -o ! -d $backup_share -o ! -d $backup_state -o ! -d $backup_cache ]; then
    echo "backup directory not found"
    return 1
  fi

  echo ""
  echo "Restore following directories"
  echo ""
  echo "  $backup_config      => ~/.config/nvim"
  echo "  $backup_share => ~/.local/share/nvim"
  echo "  $backup_state => ~/.local/state/nvim"
  echo "  $backup_cache       => ~/.cache/nvim"
  echo ""
  echo "This operation will overwrite the above directories."
  echo -n "Proceed? [y/N] "

  read yesno
  # execute
  if [ $yesno = "y" -o $yesno = "Y" ]; then
    if [ -d ~/.config//nvim ]; then
      rm -rf ~/.config/nvim
    fi
    if [ -d ~/.local/share/nvim ]; then
      rm -rf ~/.local/share/nvim
    fi
    if [ -d ~/.local/state/nvim ]; then
      rm -rf ~/.local/state/nvim
    fi
    if [ -d ~/.cache//nvim ]; then
      rm -rf ~/.cache/nvim
    fi
    mv $backup_config ~/.config/nvim
    mv $backup_share  ~/.local/share/nvim
    mv $backup_state  ~/.local/state/nvim
    mv $backup_cache  ~/.cache/nvim
  fi
}