Dotfiles Install Script

dotfiles-install.sh

#!/usr/bin/env bash
set -o errexit -o pipefail -o noclobber -o nounset



function config {
  git --git-dir="$HOME"/.dotfiles.git/ --work-tree="$HOME" "$@"
}

export -f config

read -r -p " Delete existing Git DIR? [y/N] " response </dev/tty

if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]; then
/bin/rm -rf "$HOME"/.dotfiles.git
fi

KEYNAME="$HOME/.ssh/id_rsa"
BRANCH_NAME=$USER@$(hostname)

printf "checking/creating this machines id_rsa.pub\n"
if [ -f "${KEYNAME}" ]; then
  if [ -s "${KEYNAME}" ]; then
    printf "existing Key:\n"
    cat ~/.ssh/id_rsa.pub
  else
    printf "File Exists but empty, New Key:\n"
    rm ~/.ssh/id_rsa && rm ~/.ssh/id_rsa.pub
    ssh-keygen -t rsa -C "$BRANCH_NAME" -f "$HOME/.ssh/id_rsa" -P "" && cat ~/.ssh/id_rsa.pub
  fi
else
  printf "New Key:\n"
  mkdir -p ~/.ssh
  ssh-keygen -t rsa -C "$BRANCH_NAME" -f "$HOME/.ssh/id_rsa" -P "" && cat ~/.ssh/id_rsa.pub
fi

echo "now go to https://github.com/ameeno/dotfiles/settings/keys and add the public key as a deploy key with write support."

printf "\n#####################\n"

read -r -p " Do you wish to continue? [y/N] " response </dev/tty

if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]; then
  git clone --bare git@github.com:ameeno/dotfiles.git "$HOME"/.dotfiles.git

set +o errexit

config checkout

if [ $? = 0 ]; then
  echo "Checked out config."
else
  echo "Backing up pre-existing dot files."
  [ -d "$HOME/.dotfiles.backup" ] && tar -czvf "$HOME"/.dotfiles.backup-"$(date +"%Y%m%d-%H%M%S")".tar.gz "$HOME"/.dotfiles.backup \
  && /bin/rm -rf "$HOME"/.dotfiles.backup && mkdir -p "$HOME"/.dotfiles.backup && echo "backed up previous backup as $HOME/.dotfiles.backup-$(date +"%Y%m%d-%H%M%S").tar.gz"
  for f in $(config checkout 2>&1 | egrep "\s+\." | awk {'print $1'}); do
    dir_name=$(dirname "$f")
    rem_home=${dir_name#"$HOME"/}
    mkdir -p "$HOME"/.dotfiles-backup/"$rem_home"
    cp -r "$f" "$HOME"/.dotfiles-backup/"$rem_home"/ && /bin/rm -rf "$f" && echo "backed up $f"
  done
  config checkout -f
  echo "Checked out config."
fi

  # config reset --hard origin/master
  # config pull origin master

  echo "pulling alternative git config"
  /bin/rm "$HOME"/.dotfiles.git/config && curl -Lks https://gist.githubusercontent.com/ameeno/d6aaa011a86e4741403fb97f028f8974/raw/dotfiles-gitconfig > "$HOME"/.dotfiles.git/config && printf "new git config file is \n"
  cat "$HOME"/.dotfiles.git/config
  printf "\n#####################\n"
  echo "Switching to new Branch: $BRANCH_NAME "
  config config --local user.name "$BRANCH_NAME"
  config config --local user.email "$BRANCH_NAME"
  config checkout -b "$BRANCH_NAME" || config checkout "$BRANCH_NAME"
  # config commit -m "new branch generated"
  echo "setting new branch and pushing upstream"
  mv -f "$HOME"/.dotfiles.git/config "$HOME"/.dotfiles.gitconfig && echo -e "[include]\n\tpath = ~/.dotfiles.gitconfig" > "$HOME"/.dotfiles.git/config
  config commit -m "new branch generated"
  config push -u origin "$BRANCH_NAME" --force
  config checkout -f
  config fetch origin
  echo "All Done, Enjoy"

else
  echo "Cancelled Dotfiles Import. Exiting now ..."
  exit
fi

export -f config