新增 .docx 範本支援：jszip 跨 run 佔位符替換

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/contractService.js

@@ -4,11 +4,16 @@ const os = require('node:os');
 const path = require('node:path');
 const { spawn } = require('node:child_process');
 const { pathToFileURL } = require('node:url');
+const JSZip = require('jszip');
 
 const TEMPLATE_DIR = path.resolve(process.env.TEMPLATE_DIR || path.join(process.cwd(), 'templates'));
 const TEMP_DIR = path.resolve(process.env.TEMP_DIR || path.join(os.tmpdir(), 'rental-contracts'));
-const SOFFICE_BIN = process.env.SOFFICE_BIN || 'soffice';
-const SUPPORTED_TEMPLATE_EXTENSIONS = new Set(['.doc']);
+const SOFFICE_BIN = process.env.SOFFICE_BIN || (
+  process.platform === 'win32'
+    ? 'C:\\Program Files\\LibreOffice\\program\\soffice.exe'
+    : 'soffice'
+);
+const SUPPORTED_TEMPLATE_EXTENSIONS = new Set(['.doc', '.docx']);
 
 const PLACEHOLDERS = [
   ['{{每月租金}}', 'monthlyRent', '每月租金'],
@@ -37,7 +42,10 @@ async function createContractPdf(input) {
     const copiedDocPath = path.join(workDir, `contract-${crypto.randomUUID()}${extension}`);
 
     await fs.copyFile(templatePath, copiedDocPath);
-    const replacementCounts = await applyPlaceholdersToDoc(copiedDocPath, values);
+    const ext = path.extname(copiedDocPath).toLowerCase();
+    const replacementCounts = ext === '.docx'
+      ? await applyPlaceholdersToDocx(copiedDocPath, values)
+      : await applyPlaceholdersToDoc(copiedDocPath, values);
     assertAllPlaceholdersWereFound(replacementCounts);
 
     const pdfPath = await convertToPdf(copiedDocPath, workDir);
@@ -93,7 +101,7 @@ async function resolveTemplatePath(templateName) {
   }
 
   if (!SUPPORTED_TEMPLATE_EXTENSIONS.has(path.extname(templatePath).toLowerCase())) {
-    throwClientError('目前僅支援 .doc 範本。');
+    throwClientError('目前僅支援 .doc / .docx 範本。');
   }
 
   try {
@@ -121,6 +129,40 @@ async function removeWorkDir(workDir) {
   await fs.rm(workDir, { recursive: true, force: true });
 }
 
+// Word 會把佔位符拆成多個 run，用這個 pattern 允許相鄰字元之間出現 run 邊界 XML
+const RUN_BOUNDARY = '(?:</w:t></w:r>(?:<w:bookmarkStart[^/]*/?>|<w:bookmarkEnd[^/]*/?>)*<w:r>(?:<w:rPr>[\\s\\S]*?</w:rPr>)?<w:t[^>]*>)?';
+
+function buildPlaceholderPattern(placeholder) {
+  const chars = [...placeholder].map((c) => c.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'));
+  return new RegExp(chars.join(RUN_BOUNDARY), 'g');
+}
+
+async function applyPlaceholdersToDocx(docPath, values) {
+  const data = await fs.readFile(docPath);
+  const zip = await JSZip.loadAsync(data);
+  const xmlFiles = ['word/document.xml', 'word/header1.xml', 'word/footer1.xml'];
+  const counts = new Map(PLACEHOLDERS.map(([p]) => [p, 0]));
+
+  for (const xmlFile of xmlFiles) {
+    const entry = zip.file(xmlFile);
+    if (!entry) continue;
+
+    let xml = await entry.async('string');
+    for (const [placeholder, key] of PLACEHOLDERS) {
+      const pattern = buildPlaceholderPattern(placeholder);
+      xml = xml.replace(pattern, () => {
+        counts.set(placeholder, counts.get(placeholder) + 1);
+        return values[key];
+      });
+    }
+    zip.file(xmlFile, xml);
+  }
+
+  const out = await zip.generateAsync({ type: 'nodebuffer', compression: 'DEFLATE' });
+  await fs.writeFile(docPath, out);
+  return counts;
+}
+
 async function applyPlaceholdersToDoc(docPath, values) {
   const buffer = await fs.readFile(docPath);
   const counts = new Map();