esp32-android-auto-nav/build.sh

#!/bin/bash
# Build script for ESP32 Android Auto Navigation Head Unit
# Uses Podman container with ESP-IDF Rust toolchain

set -e  # Exit on error

BINARY_NAME="esp32-android-auto-nav"

# Parse arguments
BUILD_ONLY=false
NAV_ONLY=false
CROP_VIDEO=false
CARGO_FEATURES=""

for arg in "$@"; do
  case $arg in
    -b|--build-only|--no-flash)
      BUILD_ONLY=true
      shift
      ;;
    -n|--nav-only)
      NAV_ONLY=true
      shift
      ;;
    -c|--crop)
      CROP_VIDEO=true
      shift
      ;;
    -h|--help)
      echo "Usage: ./build.sh [OPTIONS]"
      echo "Options:"
      echo "  -b, --build-only, --no-flash  Build only, skip flashing prompt"
      echo "  -n, --nav-only                Nav-only mode: text turn-by-turn, no video"
      echo "  -c, --crop                    Crop mode: center-crop 480×320 from 800×480 (faster)"
      echo "  -h, --help                    Show this help message"
      exit 0
      ;;
  esac
done

# Build feature list
FEATURE_LIST=""
if [ "$NAV_ONLY" = true ]; then
    FEATURE_LIST="nav-only"
    echo "📍 Mode: NAV-ONLY (turn-by-turn text, no H.264 video)"
elif [ "$CROP_VIDEO" = true ]; then
    FEATURE_LIST="crop-video"
    echo "🎬 Mode: CROP VIDEO (center 480×320 from 800×480, no scaling)"
else
    echo "🎬 Mode: FULL VIDEO (H.264 decode + downscale + display)"
fi

if [ -n "$FEATURE_LIST" ]; then
    CARGO_FEATURES="--features $FEATURE_LIST"
fi

echo "🔨 Building $BINARY_NAME (release)..."
echo ""

sudo podman run --rm \
  --security-opt seccomp=unconfined \
  --net=host \
  --security-opt label=disable \
  --user root \
  -v $(pwd):/project \
  -w /project \
  docker.io/espressif/idf-rust:all_latest \
  bash -c "export RUSTUP_HOME=/home/esp/.rustup && export CARGO_HOME=/home/esp/.cargo && source /home/esp/export-esp.sh && cargo build --release $CARGO_FEATURES"

echo ""
echo "✅ Build complete!"
echo "📦 Binary: target/xtensa-esp32s3-espidf/release/$BINARY_NAME"
echo ""

if [ "$BUILD_ONLY" = true ]; then
    echo "✅ Build complete (skipping flash prompt)."
    echo ""
    echo "To flash later:"
    echo "  cargo espflash flash target/xtensa-esp32s3-espidf/release/$BINARY_NAME --monitor"
    exit 0
fi

# Ask if user wants to flash
read -p "⚡ Flash to device now? (y/N): " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]; then
    # Detect USB serial device
    USB_DEVICE=""
    if [ -e /dev/ttyUSB0 ]; then
        USB_DEVICE="/dev/ttyUSB0"
    elif [ -e /dev/ttyACM0 ]; then
        USB_DEVICE="/dev/ttyACM0"
    else
        echo "🔍 No USB device auto-detected."
        read -p "Enter device path (e.g., /dev/ttyUSB0): " USB_DEVICE
    fi
    
    if [ -z "$USB_DEVICE" ] || [ ! -e "$USB_DEVICE" ]; then
        echo "❌ Device $USB_DEVICE not found. Skipping flash."
        exit 1
    fi
    
    # Fix USB device permissions
    echo "🔧 Setting device permissions..."
    sudo chmod 666 "$USB_DEVICE"
    
    echo "📡 Flashing to $USB_DEVICE..."
    echo ""
    
    sudo podman run --rm \
      --security-opt seccomp=unconfined \
      --security-opt label=disable \
      --user root \
      --privileged \
      --device="$USB_DEVICE:$USB_DEVICE" \
      -v $(pwd):/project \
      -w /project \
      docker.io/espressif/idf-rust:all_latest \
      bash -c "export RUSTUP_HOME=/home/esp/.rustup && export CARGO_HOME=/home/esp/.cargo && source /home/esp/export-esp.sh && espflash flash --port $USB_DEVICE target/xtensa-esp32s3-espidf/release/$BINARY_NAME"
    
    echo ""
    echo "✅ Flash complete!"
    echo ""
    echo "📺 To view serial output:"
    echo "   screen $USB_DEVICE 115200"
    echo "   (Press Ctrl+A then K to exit)"
    echo ""
    echo "Or install espflash on host:"
    echo "   cargo install espflash"
    echo "   espflash monitor --port $USB_DEVICE"
    
    echo ""
    echo "✅ Flash complete!"
else
    echo ""
    echo "To flash later:"
    echo "  cargo espflash flash target/xtensa-esp32s3-espidf/release/$BINARY_NAME --monitor"
fi