Support TS, swagger,Template(xls,docx),PDF convert

libs/docx-templates-lib.ts

@@ -0,0 +1,147 @@
+
+import express from 'express'
+export const docxTemplateRoute = express.Router();
+
+import {mimeToExtension,templateData} from './report-template'
+import fs from 'fs'
+import { createReport } from 'docx-templates';
+import qrcode from 'yaqrcode'
+// แก้ package.json ของ LibreOfficeFileConverter
+// https://github.com/microsoft/TypeScript/issues/52363#issuecomment-1659179354
+import { LibreOfficeFileConverter } from 'libreoffice-file-converter';
+const TEMPLATE_FOLDER_NAME = "templates/docx"
+
+/**
+ * docxTemplate Uses docx-template to convert input data and template to output buffer. 
+ * You have to handle exception throw by function
+ * template keep in folder templates
+ * @param {String} base  base path of caller relate to template-docx foler (no trail slash)
+ * @param {templateData} tdata Template Information in JSON format
+ * @param {String} outputMediaType output extension
+ * @return {Promise<Uint8Array>} output buffer after apply template.
+ */
+export async function docxTemplateX(base: string=".", tdata: templateData, outputMediaType: string="docx"): Promise<Uint8Array> {
+  try {
+    let template = await fs.promises.readFile(`${base}/${TEMPLATE_FOLDER_NAME}/${tdata.template}.docx`)
+    const buffer = await createReport({
+      template,
+      data: tdata.data,
+      additionalJsContext: {
+        qrCode: (contents: string, caption: string, size: number, width: number, height: number) => {
+          const dataUrl = qrcode(contents, { size: size });
+          const data = dataUrl.slice('data:image/gif;base64,'.length);
+          return { width, height, data, extension: '.gif', caption };
+        },
+      }
+    });
+    if (outputMediaType === "docx")
+      return buffer
+    const libreOfficeFileConverter = new LibreOfficeFileConverter({
+      childProcessOptions: {
+        timeout: 60 * 1000,
+      },
+    });
+    const lbuffer = await libreOfficeFileConverter.convertBuffer(Buffer.from(buffer), outputMediaType);
+    return lbuffer
+
+  } catch (e) {
+    throw (e)
+  }
+
+}
+
+
+
+/** javascript-obfuscator:disable
+ * @swagger
+ * /api/v1/report-template/docx:
+ *   get:
+ *     summary: list docx template
+ *     tags: [report-template]
+ *     responses:
+ *       200:
+ *         description: array of template
+ *         content:
+ *           applicatin/json:
+ *             schema:
+ *               type: array
+ *               items: 
+ *                 type: string
+ *             example: ["hello"]
+ *       500:
+ *         description: Server error
+*/
+docxTemplateRoute.get("/", async function (req, res) {
+  try {
+    const fileList = await fs.promises.readdir(`./${TEMPLATE_FOLDER_NAME}`)
+    const templateList = fileList.map((f) => f.split('.docx')[0])
+    res.send(templateList)
+  } catch (ex) {
+    res.statusCode = 500;
+    res.statusMessage = 'Internal Server Error';
+    res.end(res.statusMessage);
+    console.error('Error during get template list: ', ex);
+  }
+})
+
+
+/** javascript-obfuscator:disable
+ * @swagger
+ * /api/v1/report-template/docx:
+ *   post:
+ *     summary: Create document from docx template output can be docx pdf odt
+ *     tags: [report-template]
+ *     requestBody:
+ *       required: true
+ *       content:
+ *         application/json:
+ *           schema:
+ *             $ref: '#/components/schemas/templateData'
+ *           example:
+ *             template: hello
+ *             reportName: docx-report
+ *             data: {"docNo":"๑๒๓๔๕","me": "กระผม","prefix": "นาย","name": "สรวิชญ์","surname": "พลสิทธิ์","position": "Chief Technology Officer","org": {"type": "บริษัท","name": "เฟรปเป้ที","url": "https://frappet.com"},"employees": [{"name": "ภาวิชญ์","surname": "พลสิทธิ์"},{"name": "วิชญาภา","surname": "พลสิทธิ์"}]}
+ *     responses:
+ *       201:
+ *         description: เอกสารถูกสร้างขึ้น
+ *         content:
+ *           application/vnd.openxmlformats-officedocument.wordprocessingml.document:
+ *             schema:
+ *               type: string
+ *               format: binary
+ *           application/pdf:
+ *             schema:
+ *               type: string
+ *               format: binary
+ *           application/vnd.oasis.opendocument.text:
+ *             schema:
+ *               type: string
+ *               format: binary
+ *       500:
+ *         description: Server error
+ *
+ */
+docxTemplateRoute.post("/", async function (req, res) {
+  try {
+    if (!req.headers['content-type'] || !req.headers['accept'])
+      throw new Error("Require header content-type, accept")
+    let inputType = mimeToExtension(req.headers['content-type']);
+    let outputMediaType = mimeToExtension(req.headers['accept']);
+    console.log('content-type: ', inputType);
+    console.log('accept: ', outputMediaType);
+    let buffer = await docxTemplateX('.', req.body, outputMediaType)
+    res.statusCode = 201;
+    res.setHeader('Content-Type', req.headers['accept']);
+    res.setHeader('Content-Disposition', `attachment;filename=${req.body.reportName}.${outputMediaType}`);
+    res.setHeader('Content-Length', buffer.length);
+    res.end(buffer);
+  } catch (ex) {
+    res.statusCode = 500;
+    res.statusMessage = 'Internal Server Error during get docx template list';
+    res.end(res.statusMessage);
+    console.error('Error during apply template: ', ex);
+  }
+
+})
+
+