bootstrap for dotfiles ansible repo

dotfiles_bootstrap.sh

#!/usr/bin/env bash
set -euo pipefail

GITHUB_USER="jorgeav527"
REPO_NAME="dotfiles"
PROJECTS_DIR="$HOME/Projects"
DOTFILES_DIR="$PROJECTS_DIR/$REPO_NAME"
KEY_PATH="$HOME/.ssh/id_ed25519_github"

# Force read from /dev/tty so curl | bash handles interactive input
read -re -p "Enter machine identifier [default: desktop]: " MACHINE < /dev/tty
MACHINE="${MACHINE:-desktop}"
echo "==> Machine set to: $MACHINE"

# -----------------------------------------------------------------------------
# 1. Detect OS & Install Base Packages
# -----------------------------------------------------------------------------
if [ -f /etc/os-release ]; then
  . /etc/os-release
  OS_ID="$ID"
else
  echo "Error: /etc/os-release not found. Cannot determine OS." >&2
  exit 1
fi

echo "==> Installing base system packages ($NAME)..."

if [[ "$OS_ID" == "arch" || "$OS_ID" == "omarchy" || "${OS_ID_LIKE:-}" == *"arch"* ]]; then
  echo "--> Detected Arch-based distribution. Updating pacman databases..."
  sudo pacman -Sy --needed --noconfirm git ansible openssh
elif [[ "$OS_ID" == "debian" || "$OS_ID" == "ubuntu" || "${OS_ID_LIKE:-}" == *"debian"* ]]; then
  echo "--> Detected Debian-based distribution. Updating apt-get..."
  sudo apt-get update
  sudo apt-get install -y git ansible openssh-client
else
  echo "Error: Unsupported distribution: $OS_ID" >&2
  exit 1
fi

# -----------------------------------------------------------------------------
# 2. Check & Generate GitHub SSH Key
# -----------------------------------------------------------------------------
echo "==> Checking GitHub SSH key..."
if [ ! -f "$KEY_PATH" ]; then
  echo "Creating new GitHub SSH key at $KEY_PATH..."
  mkdir -p "$HOME/.ssh"
  chmod 700 "$HOME/.ssh"
  ssh-keygen -t ed25519 -C "${GITHUB_USER}@${MACHINE}" -f "$KEY_PATH" -N ""

  if ! grep -q "Host github.com" "$HOME/.ssh/config" 2>/dev/null; then
    cat <<EOF >> "$HOME/.ssh/config"
Host github.com
    HostName github.com
    User git
    IdentityFile $KEY_PATH
    IdentitiesOnly yes
EOF
  fi
  chmod 600 "$HOME/.ssh/config"

  echo ""
  echo "=========================================================================="
  echo " Add this public key to GitHub: https://github.com/settings/keys"
  echo "=========================================================================="
  cat "${KEY_PATH}.pub"
  echo "=========================================================================="
  echo ""
  read -rp "Press [Enter] once added to GitHub..." _ < /dev/tty
else
  echo "GitHub SSH key already exists at $KEY_PATH. Skipping."
fi

# Fetch GitHub host keys safely
ssh-keyscan github.com >> "$HOME/.ssh/known_hosts" 2>/dev/null || true

# -----------------------------------------------------------------------------
# 3. Sync Dotfiles Repository
# -----------------------------------------------------------------------------
echo "==> Syncing repository..."
mkdir -p "$PROJECTS_DIR"

if [ ! -d "$DOTFILES_DIR" ]; then
  # Clone public repo into ~/Projects/dotfiles via HTTPS
  git clone "https://github.com/${GITHUB_USER}/${REPO_NAME}.git" "$DOTFILES_DIR"
  
  # Switch remote URL to SSH for future pushes
  git -C "$DOTFILES_DIR" remote set-url origin "git@github.com:${GITHUB_USER}/${REPO_NAME}.git"
else
  echo "Repository already exists at $DOTFILES_DIR. Updating..."
  git -C "$DOTFILES_DIR" pull origin main
fi

# Last gist update
# curl -fsSL https://gist.githubusercontent.com/jorgeav527/b791460eadeb1ceb31869c4959073c41/raw/dotfiles_bootstrap.sh | bash