#!/bin/bash

# Build script bertahap untuk menghindari memory overload
# Tetap membangun SEMUA file yang diperlukan tapi secara bertahap

echo "🔨 Starting chunked production build..."

# Set memory limit
export NODE_OPTIONS="--max-old-space-size=1536"
export NODE_ENV=production

# Clean previous build
echo "🧹 Cleaning previous build..."
rm -rf public/build/*

# Fungsi untuk build dengan retry
build_with_retry() {
    local config_file=$1
    local attempt=1
    local max_attempts=3
    
    while [ $attempt -le $max_attempts ]; do
        echo "🔄 Build attempt $attempt of $max_attempts..."
        
        if vite build --config $config_file; then
            echo "✅ Build successful on attempt $attempt"
            return 0
        else
            echo "❌ Build failed on attempt $attempt"
            if [ $attempt -lt $max_attempts ]; then
                echo "⏳ Waiting 5 seconds before retry..."
                sleep 5
                # Clear memory caches
                sync && echo 3 > /proc/sys/vm/drop_caches 2>/dev/null || true
            fi
            attempt=$((attempt + 1))
        fi
    done
    
    return 1
}

echo "📦 Building all assets with memory optimization..."

# Try building with production config first
if build_with_retry "vite.config.production.js"; then
    echo "🎉 Build completed successfully!"
    echo "📊 Build summary:"
    du -sh public/build/* 2>/dev/null || echo "Build files created"
    
    # Count generated files
    echo "📁 Generated files:"
    find public/build -type f | wc -l | xargs echo "Total files:"
    
else
    echo "❌ Build failed after all attempts!"
    echo ""
    echo "💡 Alternative solutions:"
    echo "  1. ✨ Build locally: npm run build:local"
    echo "  2. 🔧 Increase server memory/swap"
    echo "  3. ☁️  Use GitHub Actions CI/CD"
    echo "  4. 🚀 Use deployment services (Vercel, Netlify)"
    echo ""
    echo "🏠 For local build and deploy:"
    echo "  npm run build:local"
    echo "  ./deploy.sh your-username your-server.com /path/to/project"
    
    exit 1
fi

echo ""
echo "🔍 Verifying all essential files are built..."

# Check for essential files
essential_files=(
    "public/build/manifest.json"
    "public/build/assets"
)

missing_files=()
for file in "${essential_files[@]}"; do
    if [ ! -e "$file" ]; then
        missing_files+=("$file")
    fi
done

if [ ${#missing_files[@]} -eq 0 ]; then
    echo "✅ All essential files are present!"
else
    echo "⚠️  Missing files:"
    printf '  %s\n' "${missing_files[@]}"
fi