smart-serow/scripts/pi_setup.sh

#!/bin/bash
# One-time setup script for Smart Serow on Raspberry Pi
# Run this ON the Pi itself

set -e

echo "=== Smart Serow Pi Setup ==="

# Use current user (whoever is running this script on the Pi)
PI_USER="${USER:-$(whoami)}"
PI_UID=$(id -u "$PI_USER")
echo "Setting up for user: $PI_USER (uid: $PI_UID)"

# Check if running on Pi (arm architecture)
ARCH=$(uname -m)
if [[ "$ARCH" != "aarch64" && "$ARCH" != "armv7l" ]]; then
    echo "WARNING: This doesn't look like a Pi (arch: $ARCH)"
    echo "Continuing anyway..."
fi

APP_DIR="/opt/smartserow"
SERVICE_FILE="/etc/systemd/system/smartserow-ui.service"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Create app directory
echo "Creating app directory: $APP_DIR"
sudo mkdir -p "$APP_DIR/bundle"
sudo chown -R "$PI_USER:$PI_USER" "$APP_DIR"

# Create assets directory in user home (for navigator images, etc.)
ASSETS_DIR="/home/$PI_USER/smartserow-ui/assets"
echo "Creating assets directory: $ASSETS_DIR"
mkdir -p "$ASSETS_DIR/navigator"
echo "  (deploy.py will sync extra/images here)"

# Install runtime dependencies for flutter-elinux
echo "Installing runtime dependencies..."
sudo apt-get update
sudo apt-get install -y \
    libgl1-mesa-dri \
    libgles2-mesa \
    libegl1-mesa \
    libdrm2 \
    libgbm1 \
    libinput10 \
    libudev1 \
    fonts-noto

# For X11 debug mode (optional but useful)
sudo apt-get install -y \
    xorg \
    xinit \
    libx11-6 \
    libxkbcommon-x11-0

# Generate systemd service with correct user
echo "Installing systemd service..."
if [ -f "$SCRIPT_DIR/smartserow-ui.service" ]; then
    # Patch the template with actual user values
    sed -e "s/User=.*/User=$PI_USER/" \
        -e "s/Group=.*/Group=$PI_USER/" \
        -e "s|HOME=/home/.*|HOME=/home/$PI_USER|" \
        -e "s|XDG_RUNTIME_DIR=/run/user/.*|XDG_RUNTIME_DIR=/run/user/$PI_UID|" \
        "$SCRIPT_DIR/smartserow-ui.service" | sudo tee "$SERVICE_FILE" > /dev/null
else
    echo "WARNING: Service file not found at $SCRIPT_DIR/smartserow-ui.service"
    echo "Copy it manually to $SERVICE_FILE"
fi

# Enable service
echo "Enabling service..."
sudo systemctl daemon-reload
sudo systemctl enable smartserow-ui

# Add user to required groups for DRM/KMS access
echo "Setting up permissions for $PI_USER..."
sudo usermod -aG video "$PI_USER"
sudo usermod -aG input "$PI_USER"
sudo usermod -aG render "$PI_USER" 2>/dev/null || true

echo ""
echo "=== Setup Complete ==="
echo ""
echo "Next steps:"
echo "1. Deploy the app: run deploy.sh from your dev machine"
echo "2. Start service:  sudo systemctl start smartserow-ui"
echo "3. Or reboot:      sudo reboot"
echo ""
echo "Useful commands:"
echo "  systemctl status smartserow-ui    # Check status"
echo "  journalctl -u smartserow-ui -f    # View logs"
echo ""