#!/bin/bash
# Download 32-bit ARM compatible libraries with forced architecture

set -e

echo "======================================="
echo "  32-BIT ARM LIBRARY DOWNLOADER"
echo "======================================="
echo ""

# Remove existing 32-bit folder to ensure clean download
if [ -d "req_libraries_32bit" ]; then
    echo "🗑️  Removing existing req_libraries_32bit for clean download..."
    rm -rf req_libraries_32bit
fi

# Create fresh directory
mkdir -p req_libraries_32bit

echo "📦 Downloading 32-bit ARM compatible packages..."
echo "   Target architecture: linux_armv7l"
echo ""

# Download with explicit 32-bit ARM platform targeting
echo "🔄 Downloading with forced 32-bit architecture..."
pip download -r requirements.txt -d req_libraries_32bit/ \
    --platform linux_armv7l \
    --only-binary=:all: \
    --python-version 311 \
    --abi cp311

echo ""
echo "📊 Download results:"
WHEEL_COUNT=$(ls req_libraries_32bit/*.whl 2>/dev/null | wc -l || echo "0")
echo "   Wheel files: $WHEEL_COUNT"

if [ "$WHEEL_COUNT" -gt 0 ]; then
    echo ""
    echo "🔍 Key 32-bit packages:"
    if ls req_libraries_32bit/bcrypt*.whl >/dev/null 2>&1; then
        BCRYPT_FILE=$(basename $(ls req_libraries_32bit/bcrypt*.whl | head -1))
        echo "   🔐 BCRYPT: $BCRYPT_FILE"
        if [[ "$BCRYPT_FILE" == *"armv7l"* ]]; then
            echo "      ✅ Correct 32-bit architecture"
        else
            echo "      ⚠️  Architecture unclear"
        fi
    fi
    
    if ls req_libraries_32bit/pillow*.whl >/dev/null 2>&1; then
        PILLOW_FILE=$(basename $(ls req_libraries_32bit/pillow*.whl | head -1))
        echo "   🖼️  PILLOW: $PILLOW_FILE"
        if [[ "$PILLOW_FILE" == *"armv7l"* ]]; then
            echo "      ✅ Correct 32-bit architecture"
        fi
    fi
    
    echo ""
    echo "✅ 32-bit libraries download completed!"
    echo ""
    echo "📋 Next steps:"
    echo "   1. Copy this folder to your 32-bit Raspberry Pi"
    echo "   2. Run: ./install_32bit.sh"
else
    echo "❌ No wheel files downloaded"
    echo ""
    echo "💡 Troubleshooting:"
    echo "   • Check internet connection"
    echo "   • Verify requirements.txt exists"
    echo "   • Some packages may not have 32-bit wheels available"
fi