Keeping dot files consistent across multiple systems

dotmgmt.sh

#!/usr/bin/env bash

# This will keep all the dot files consistent across systems.
#
# Leonardo Mora Castro
# December, 2023

help() {
  cat <<EOF
USAGE:

  dotfiles.sh OPTION

OPTIONS:
  
    -h show this help message and exit
    -i initialize the dotfiles repository
    -s synchronize the dotfiles repository
EOF
}

# Parse arguments
while getopts "his" opt; do
  case "$opt" in
  h)
    help
    exit 0
    ;;
  i)
    action="init"
    ;;
  s)
    action="sync"
    ;;
  *)
    help
    exit 1
    ;;
  esac
done

alias="alias config='/usr/bin/git --git-dir=\$HOME/.cfg/ --work-tree=\$HOME'"
repoURL='[email protected]:LeonardoMor/configs.git'
NvChadConfigsURL='[email protected]:LeonardoMor/NVChadConfigs.git'
nvimCustom="$HOME/.config/nvim/lua/custom"

set_alias() {
  if ! grep -q "$alias" "$HOME/.bash_aliases"; then
    echo "$alias" >>"$HOME/.bash_aliases"
  fi
  if ! grep -q '\.bash_aliases' "$HOME/.bashrc"; then
    echo ". $HOME/.bash_aliases" >>"$HOME/.bashrc"
  fi
  source "${HOME}/.bashrc"
}

config() {
  /usr/bin/git --git-dir="$HOME/.cfg/" --work-tree="$HOME" "$@"
}

trackNVChad() {
  cd "$nvimCustom" || {
    echo "Could not change directory to $HOME/.config/nvim/lua/custom" >&2
    exit 1
  }
  git init
  git remote add origin "$NvChadConfigsURL"
  git add .
  git commit -m "Add NvChad custom configs"
  git push --force --set-upstream origin master
}

initialize() {
  local -a dotfiles
  git init --bare "$HOME/.cfg"
  config config --local status.showUntrackedFiles no
  # Add here the files to track
  dotfiles=(
    "$HOME/.bash_aliases"
    "$HOME/.bashrc"
    "$HOME/.tmux.conf"
  )
  config status
  for dotfile in "${dotfiles[@]}"; do
    if ! [[ -d $dotfile ]]; then
      config add "$dotfile"
    fi
    while read -r f; do
      config add "$f"
    done < <(find "$dotfile" -type f)
    config commit -m "Add $(basename "$dotfile")"
  done
  config remote add origin "$repoURL"
  config push --force --set-upstream origin master
  # Initialize custom NvChad configs
  if trackNVChad; then
    echo "NvChad custom configs now tracked"
  fi
}

synchronize() {
  if ! [[ -d ${HOME}/.cfg ]]; then
    echo ".cfg" >>.gitignore
    git clone --bare --no-recurse-submodules "$repoURL" "${HOME}/.cfg"
  fi
  local -a existing_dotfiles
  readarray -t existing_dotfiles < <(
    config checkout 2>&1 | grep -E '[[:space:]]+\.[^[:space:]]+' | awk '{ print $1 }'
  )
  if [[ ${#existing_dotfiles[@]} -gt 0 ]]; then
    mkdir -p "${HOME}/.config-backup"
    for dotfile in "${existing_dotfiles[@]}"; do
      mv "$HOME/$dotfile" "${HOME}/.config-backup"
      echo "Moved existing $dotfile to ${HOME}/.config-backup" >&2
    done
    config checkout
  fi
  config config --local status.showUntrackedFiles no
  rm -rf "$(basename "$nvimCustom")" "$nvimCustom"
  git clone "$NvChadConfigsURL" "$nvimCustom"
}

main() {
  cd "$HOME" || {
    echo "Could not change directory to $HOME" >&2
    exit 1
  }
  set_alias
  case "$action" in
  init)
    initialize
    ;;
  sync)
    synchronize
    ;;
  *)
    help
    exit 1
    ;;
  esac
}

main