const sharp = require('sharp');
const path = require('path');
const fs = require('fs');

const CROP_BOTTOM_HEIGHT = 300;

async function removeWatermark() {
    console.log('🖼️  开始裁剪图片水印...\n');
    
    const imageDir = path.join(__dirname, '产品', '飞牛 NAS', 'fyd-亚克力机箱 - 单', '详情', 'image');
    
    const backupDir = path.join(imageDir, 'backup');
    
    const imageFiles = fs.readdirSync(backupDir).filter(file => file.endsWith('.jpg'));
    
    console.log(`📸 找到 ${imageFiles.length} 张图片需要处理\n`);
    console.log(`✂️  裁剪设置: 从底部裁剪 ${CROP_BOTTOM_HEIGHT}px\n`);
    
    for (const imageFile of imageFiles) {
        try {
            const backupPath = path.join(backupDir, imageFile);
            const imagePath = path.join(imageDir, imageFile);
            
            console.log(`📄 正在处理: ${imageFile}`);
            
            const metadata = await sharp(backupPath).metadata();
            
            const newHeight = metadata.height - CROP_BOTTOM_HEIGHT;
            
            await sharp(backupPath)
                .extract({
                    left: 0,
                    top: 0,
                    width: metadata.width,
                    height: newHeight
                })
                .toFile(imagePath);
            
            console.log(`  ✅ 已裁剪: ${metadata.width}x${metadata.height} -> ${metadata.width}x${newHeight}\n`);
        } catch (error) {
            console.error(`  ❌ 处理失败 ${imageFile}: ${error.message}\n`);
        }
    }
    
    console.log('✨ 所有图片处理完成！');
}

removeWatermark().catch(error => {
    console.error('💥 处理过程出错:', error);
    process.exit(1);
});