#!/usr/bin/env sh

set -eu

install() {
  BINARY_NAME="crib"
  VERSION="v0.0.1-alpha"
  RUBY_VERSION="3.4"
  HAVE_34=0
  HAVE_32=0

  if ldconfig -p | grep -q libruby.so.3.4; then
    HAVE_34=1
  fi
  if ldconfig -p | grep -q libruby-3.2.so; then
    HAVE_32=1
  fi

  if [ "$HAVE_34" = "1" ] && [ "$HAVE_32" = "1" ]; then
    echo "Multiple Ruby versions detected."
    echo "Select Ruby ABI:"
    echo "  1) Ruby 3.4"
    echo "  2) Ruby 3.2"
    read -r choice </dev/tty
    case "$choice" in
    1) RUBY_VERSION="3.4" ;;
    2) RUBY_VERSION="3.2" ;;
    *)
      echo "Invalid choice"
      exit 1
      ;;
    esac
  elif [ "$HAVE_34" = "1" ]; then
    RUBY_VERSION="3.4"
  elif [ "$HAVE_32" = "1" ]; then
    RUBY_VERSION="3.2"
  else
    echo "No compatible Ruby library found need Ruby 3.2 or 3.4."
    exit 1
  fi

  GITHUB_URL="https://github.com/SyedM-dev/crib/releases/download/$VERSION/crib-linux-x86_64-ruby$RUBY_VERSION"

  missing_ruby=""
  missing_magic=""
  command -v ruby >/dev/null 2>&1 || missing_ruby="ruby"
  ldconfig -p | grep libmagic >/dev/null 2>&1 || missing_magic="libmagic"

  if [ -n "$missing_ruby" ] || [ -n "$missing_magic" ]; then
    echo "Missing dependencies: ${missing_ruby} ${missing_magic}"
    echo "Install them using your package manager:"
    echo "Ubuntu/Debian: sudo apt install ruby libmagic1"
    echo "Arch: sudo pacman -S ruby file"
    echo "Void: sudo xbps-install -Sy ruby file"
    exit 1
  fi

  echo "Installing Crib (Ruby $RUBY_VERSION)"

  echo "Install locally (~/.local/bin) or globally (/usr/bin)? [l/g]"
  read -r choice </dev/tty
  case "$choice" in
  l | L)
    INSTALL_DIR="$HOME/.local/bin"
    SUDO=""
    ;;
  g | G)
    INSTALL_DIR="/usr/bin"
    SUDO="sudo"
    ;;
  *)
    echo "Invalid choice"
    exit 1
    ;;
  esac

  $SUDO mkdir -p "$INSTALL_DIR"

  echo "Downloading binary..."
  curl -L "$GITHUB_URL" -o /tmp/"$BINARY_NAME"
  $SUDO install -m 755 /tmp/"$BINARY_NAME" "$INSTALL_DIR/$BINARY_NAME"
  rm -f /tmp/"$BINARY_NAME"

  echo
  echo "✔ Crib installed to $INSTALL_DIR"
  echo "Run with: $BINARY_NAME"
  echo "Ruby ABI: $RUBY_VERSION"
  echo "Add $INSTALL_DIR to PATH if needed."
}

install "$@"