#!/usr/bin/env node

const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');

const AUTHOR = '奇趣保罗';

function commandExists(command) {
  try {
    const check =
      process.platform === 'win32' ? `where ${command}` : `command -v ${command}`;
    execSync(check, { stdio: 'ignore' });
    return true;
  } catch {
    return false;
  }
}

function quotePath(filePath) {
  return `"${filePath.replace(/"/g, '\\"')}"`;
}

function syncFileTimes(sourcePath, targetPath) {
  const { atime, mtime } = fs.statSync(sourcePath);
  fs.utimesSync(targetPath, atime, mtime);
}

function main() {
  if (!commandExists('magick')) {
    console.error('错误: 未找到 ImageMagick，请先安装 ImageMagick');
    process.exit(1);
  }

  if (!commandExists('exiftool')) {
    console.error('错误: 未找到 ExifTool，请先安装 ExifTool');
    process.exit(1);
  }

  const workDir = process.cwd();
  const pngFiles = fs
    .readdirSync(workDir)
    .filter((file) => {
      const fullPath = path.join(workDir, file);
      return (
        fs.statSync(fullPath).isFile() && path.extname(file).toLowerCase() === '.png'
      );
    });

  if (pngFiles.length === 0) {
    console.log('当前目录下没有 PNG 文件');
    return;
  }

  for (const pngFile of pngFiles) {
    const pngPath = path.join(workDir, pngFile);
    const filename = path.basename(pngFile, path.extname(pngFile));
    const webpPath = path.join(workDir, `${filename}.webp`);

    if (fs.existsSync(webpPath)) {
      console.log(`跳过: ${filename}.webp 已存在`);
      continue;
    }

    console.log(`正在转换: ${pngFile} -> ${filename}.webp`);
    execSync(`magick ${quotePath(pngPath)} ${quotePath(webpPath)}`, {
      stdio: 'inherit',
    });

    console.log(`正在写入作者信息到: ${filename}.webp`);
    execSync(
      `exiftool -overwrite_original -Author=${quotePath(AUTHOR)} ${quotePath(webpPath)}`,
      { stdio: 'inherit' }
    );

    console.log(`正在同步创建日期: ${filename}.webp <- ${pngFile}`);
    syncFileTimes(pngPath, webpPath);
  }

  console.log('所有文件处理完成！');
}

main();