01.init

#!/usr/bin/env bash

set -Ceuo pipefail
trap exit ERR

echo "=== Checking Package Installation ==="
if ! type vim zsh git tmux cmake >/dev/null 2>&1; then
 echo "Installing required packages..."
 if type apt-get >/dev/null 2>&1; then
  echo "Detected Debian/Ubuntu system"
  sudo apt-get update
  sudo apt-get -y install vim zsh git tmux cmake build-essential avahi-daemon
  sudo systemctl start avahi-daemon
  sudo systemctl enable avahi-daemon
 elif type dnf >/dev/null 2>&1; then
  echo "Detected Fedora system"
  sudo dnf -y groupinstall "Development Tools"
  sudo dnf -y install vim zsh git tmux cmake kernel-devel kernel-headers avahi
  sudo systemctl start avahi-daemon
  sudo systemctl enable avahi-daemon
 elif type yum >/dev/null 2>&1; then
  echo "Detected RHEL/CentOS system"
  sudo yum -y groupinstall "Development Tools"
  sudo yum -y install vim zsh git tmux cmake kernel-devel kernel-headers avahi
  sudo systemctl start avahi-daemon
  sudo systemctl enable avahi-daemon
 elif type pacman >/dev/null 2>&1; then
  echo "Detected Arch system"
  sudo pacman -S --needed vim zsh git tmux cmake base-devel avahi
 else
  echo "Error: No supported package manager found"
  echo "Please install the following packages manually:"
  echo "  - vim, zsh, git, tmux, cmake, build-essential"
  return 2>&- || exit
 fi
 echo "Package installation completed"
else
 echo "Required packages are already installed - Skipping installation"
fi

echo -e "\n=== Checking GitHub SSH Configuration ==="
if [ ! -d ~/.ssh ]; then
 echo "Creating ~/.ssh directory"
 mkdir -p ~/.ssh
 chmod 700 ~/.ssh
else
 echo "SSH directory already exists - Skipping creation"
fi

if ! grep -q "host github" ~/.ssh/config 2>/dev/null && ! ssh -o StrictHostKeyChecking=no -T git@github.com 2>/dev/null; then
 echo "Setting up GitHub SSH access..."
 if [ ! -f ~/.ssh/github ]; then
  echo "Generating new SSH key"
  ssh-keygen -t ed25519 -b 521 -C '' -N '' -f ~/.ssh/github
 else
  echo "SSH key already exists - Skipping generation"
 fi
 
 if ! grep -q "host github" ~/.ssh/config 2>/dev/null; then
  echo "Adding SSH configuration"
  cat << EOF > ~/.ssh/config
host github github.com
 Hostname github.com
 IdentityFile ~/.ssh/github
 User git
EOF
  chmod 600 ~/.ssh/config
 else
  echo "SSH config already exists - Skipping configuration"
 fi
 
 echo -e "\nGitHub public key:"
 echo "----------------------------------------"
 cat ~/.ssh/github.pub
 echo "----------------------------------------"
 echo -e "\n1. Visit: https://github.com/settings/ssh/new"
 echo "2. Register the above public key to GitHub"
 read -p "3. Press Enter when registration is complete"
 
 echo "Testing GitHub connection..."
 ssh -T git@github.com
else
 echo "GitHub SSH access is already configured - Skipping setup"
 exit 0
fi