first commit

server.js

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+const fastify = require('fastify')({ 
+  logger: true,
+  bodyLimit: 100 * 1024 * 1024 // 設置為 100MB
+});
+const { PDFDocument, PDFName, StandardFonts, PDFString, PDFPermissionFlag } = require('pdf-lib');
+const cors = require('@fastify/cors');
+
+// 更詳細的 CORS 設置
+fastify.register(cors, {
+  origin: ['*', 'null'],
+  methods: ['GET', 'POST', 'OPTIONS'],
+  allowedHeaders: ['Content-Type']
+});
+
+// 處理 PDF 生成請求
+fastify.post('/generate-pdf', {
+  bodyLimit: 100 * 1024 * 1024, // 100MB
+}, async (request, reply) => {
+  try {
+    const { frames, settings } = request.body;
+    
+    // 檢查 frames 是否為有效數組
+    if (!Array.isArray(frames) || frames.length === 0) {
+      throw new Error('No frames provided or frames is not an array');
+    }
+
+    // 創建 PDF 文件
+    const pdfDoc = await PDFDocument.create();
+    
+    // 設置 PDF 元數據
+    if (settings.title) pdfDoc.setTitle(settings.title);
+    if (settings.author) pdfDoc.setAuthor(settings.author);
+    if (settings.subject) pdfDoc.setSubject(settings.subject);
+    if (settings.keywords) pdfDoc.setKeywords(Array.isArray(settings.keywords) ? settings.keywords : []);
+    if (settings.creator) pdfDoc.setCreator(settings.creator);
+    if (settings.producer) pdfDoc.setProducer(settings.producer);
+    if (settings.language) pdfDoc.setLanguage(settings.language);
+    
+    // 設置日期
+    pdfDoc.setCreationDate(settings.creationDate ? new Date(settings.creationDate) : new Date());
+    pdfDoc.setModificationDate(settings.modificationDate ? new Date(settings.modificationDate) : new Date());
+
+    // 根據品質設定調整圖片品質
+    const qualitySettings = {
+      low: { scale: 1 },
+      medium: { scale: 2 },
+      high: { scale: 3 }
+    };
+    const quality = qualitySettings[settings.quality || 'medium'];
+
+    // 處理每個 Frame
+    for (const frame of frames) {
+      if (!frame.imageBase64) {
+        fastify.log.warn(`No image data for frame: ${frame.name}`);
+        continue;
+      }
+
+      try {
+        // 解碼 base64 圖片數據
+        const imageBuffer = Buffer.from(frame.imageBase64, 'base64');
+        
+        // 嵌入圖片到 PDF
+        const image = await pdfDoc.embedPng(imageBuffer);
+        
+        // 獲取圖片尺寸
+        const { width, height } = image.scale(1);
+        
+        // 添加新頁面
+        const page = pdfDoc.addPage([width, height]);
+        
+        // 繪製圖片
+        page.drawImage(image, {
+          x: 0,
+          y: 0,
+          width,
+          height,
+        });
+
+      } catch (error) {
+        fastify.log.error(`Error processing frame ${frame.name}: ${error.message}`);
+        continue;
+      }
+    }
+
+    // 檢查是否有頁面被添加
+    if (pdfDoc.getPageCount() === 0) {
+      throw new Error('No valid frames were processed');
+    }
+
+    // 處理加密設置
+    if (settings.encryption?.enabled) {
+      // 定義權限映射
+      const permissionsMap = {
+        printing: PDFPermissionFlag.Print,
+        modifying: PDFPermissionFlag.ModifyDocument,
+        copying: PDFPermissionFlag.Extract,
+        annotating: PDFPermissionFlag.Modify,
+      };
+
+      // 收集啟用的權限
+      const permissions = [];
+      if (settings.encryption.permissions?.printing) permissions.push(permissionsMap.printing);
+      if (settings.encryption.permissions?.modifying) permissions.push(permissionsMap.modifying);
+      if (settings.encryption.permissions?.copying) permissions.push(permissionsMap.copying);
+      if (settings.encryption.permissions?.annotating) permissions.push(permissionsMap.annotating);
+
+      // 應用加密設置
+      await pdfDoc.encrypt({
+        userPassword: settings.encryption.userPassword || undefined,
+        ownerPassword: settings.encryption.ownerPassword || undefined,
+        permissions: permissions
+      });
+    }
+
+    // 生成 PDF
+    const pdfBytes = await pdfDoc.save();
+
+    // 設置響應頭
+    reply.header('Content-Type', 'application/pdf');
+    reply.header('Content-Disposition', `attachment; filename=${settings.filename || 'figma-export.pdf'}`);
+
+    return reply.send(Buffer.from(pdfBytes));
+
+  } catch (error) {
+    fastify.log.error(error);
+    reply.code(500).send({ 
+      error: 'Failed to generate PDF',
+      message: error.message 
+    });
+  }
+});
+
+// 啟動服務器
+const start = async () => {
+  try {
+    await fastify.listen({ port: 3000, host: '0.0.0.0' });
+    console.log('Server running at http://localhost:3000');
+  } catch (err) {
+    fastify.log.error(err);
+    process.exit(1);
+  }
+};
+
+start();