Build Geforce Now locally for Linux

buildgfn.sh

#!/bin/bash

set -euox pipefail

APP_NAME="GeForceNOW"
APP_ID="geforcenow"
APP_DIR="$HOME/.local/share/$APP_ID"
LAUNCHER_PATH="$HOME/.local/bin/$APP_ID"
DESKTOP_FILE="$HOME/.local/share/applications/$APP_ID.desktop"
ICON_DIR="$HOME/.local/share/icons"
ICON_PATH="$ICON_DIR/$APP_ID.png"
ICON_URL="https://upload.wikimedia.org/wikipedia/commons/2/21/NVIDIA_GeForce_Now_Logo.png"  # 512x512 PNG

REQUIRED_CMDS=("node" "npm" "jq" "wget" "xdg-desktop-menu" "kbuildsycoca5")

# Detect package manager
detect_package_manager() {
  if command -v pacman &> /dev/null; then
    echo "pacman"
  elif command -v apt &> /dev/null; then
    echo "apt"
  elif command -v dnf &> /dev/null; then
    echo "dnf"
  elif command -v zypper &> /dev/null; then
    echo "zypper"
  else
    echo "unknown"
  fi
}

PACKAGE_MANAGER=$(detect_package_manager)

# Install missing dependencies
install_dependency() {
  local dep=$1
  case "$PACKAGE_MANAGER" in
    pacman)
      sudo pacman -S --noconfirm "$dep"
      ;;
    apt)
      sudo apt update
      sudo apt install -y "$dep"
      ;;
    dnf)
      sudo dnf install -y "$dep"
      ;;
    zypper)
      sudo zypper install -y "$dep"
      ;;
    *)
      echo "Unsupported package manager. Please install $dep manually."
      exit 1
      ;;
  esac
}

echo ">>> Checking and installing dependencies..."
for cmd in "${REQUIRED_CMDS[@]}"; do
  if ! command -v "$cmd" &> /dev/null; then
    echo ">>> Missing: $cmd — installing..."
    case "$cmd" in
      node|npm)
        install_dependency nodejs
        install_dependency npm
        ;;
      jq)
        install_dependency jq
        ;;
      wget)
        install_dependency wget
        ;;
      xdg-desktop-menu|xdg-utils)
        install_dependency xdg-utils
        ;;
      kbuildsycoca5)
        case "$PACKAGE_MANAGER" in
          pacman) install_dependency kservice ;;
          apt) install_dependency plasma-workspace ;;
          dnf) install_dependency plasma-workspace ;;
          zypper) install_dependency plasma5-workspace ;;
          *) echo "Install plasma workspace manually for $cmd"; exit 1 ;;
        esac
        ;;
    esac
  else
    echo ">>> Found: $cmd"
  fi
done

# Create app directory
echo ">>> Creating app directory at $APP_DIR"
mkdir -p "$APP_DIR"
cd "$APP_DIR"

if [ ! -f package.json ]; then
  echo ">>> Initializing Node.js project..."
  npm init -y
fi

if ! npm list electron >/dev/null 2>&1; then
  echo ">>> Installing Electron..."
  npm install --save electron
else
  echo ">>> Electron already installed."
fi

# Create Electron wrapper
echo ">>> Writing Electron main.js..."
cat > main.js <<EOF
const { app, BrowserWindow } = require('electron');

function createWindow() {
  const win = new BrowserWindow({
    width: 1280,
    height: 720,
    webPreferences: {
      contextIsolation: true
    },
    title: "GeForce NOW"
  });

  win.loadURL("https://play.geforcenow.com/");
}

app.whenReady().then(createWindow);

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});
EOF

# Configure package.json
echo ">>> Updating package.json..."
jq '.main = "main.js" | .scripts.start = "electron ."' package.json > package.tmp.json && mv package.tmp.json package.json

# Create launcher
echo ">>> Creating launcher script at $LAUNCHER_PATH"
mkdir -p "$(dirname "$LAUNCHER_PATH")"
cat > "$LAUNCHER_PATH" <<EOF
#!/bin/bash
cd "$APP_DIR" && npm start
EOF
chmod +x "$LAUNCHER_PATH"

# Download icon
if [ ! -f "$ICON_PATH" ]; then
  echo ">>> Downloading GeForce NOW icon..."
  mkdir -p "$ICON_DIR"
  wget -O "$ICON_PATH" "$ICON_URL"
else
  echo ">>> Icon already exists."
fi

# Desktop entry
echo ">>> Creating desktop entry at $DESKTOP_FILE"
cat > "$DESKTOP_FILE" <<EOF
[Desktop Entry]
Name=GeForce NOW
Exec=$LAUNCHER_PATH
Icon=$ICON_PATH
Type=Application
Categories=Game;Network;
StartupWMClass=GeForceNOW
EOF

# Refresh KDE/Plasma menu
echo ">>> Updating KDE application database..."
xdg-desktop-menu forceupdate
kbuildsycoca5 > /dev/null || true

echo "✅ GeForce NOW installed!"