116 lines
No EOL
4.1 KiB
TypeScript
116 lines
No EOL
4.1 KiB
TypeScript
// สร้าง docx จาก json
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// - json.info.ticket_data จะมี tid ให้โหลดไฟล์ template นี้มาใช้
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// - สร้าง signature/hash จาก json.info.ticket_data
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import { NextRequest, NextResponse } from 'next/server';
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import {readFile} from 'fs/promises';
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import path from 'path';
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import {DocumentTemplate,applyTemplate} from "@/lib/lib-tmpl";
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import { docxPool } from '@/lib/docx-pool';
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export const runtime = 'nodejs';
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const EXTERNAL_API_KEY = process.env.EXTERNAL_API_KEY || '';
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const PRIVATE_KEY_HEX = process.env.PRIVATE_KEY_HEX ||''
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const SECRET = process.env.SECRET || 'super_secret'
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const TMPL_PATH = process.env.TMPL_PATH || "./public/tmpl";
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const TICKET_SEC = Number(process.env.TICKET_SEC||'120')
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export async function POST(request: NextRequest) {
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if (!EXTERNAL_API_KEY || !PRIVATE_KEY_HEX || !SECRET){
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return NextResponse.json(
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{ error: 'Server Error: require EXTERNAL_API_KEY PRIVATE_KEY_HEX and SECRET' },
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{ status: 500 }
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);
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}
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// 1. ตรวจสอบ API Key จาก HTTP Header (x-api-key)
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const apiKey = request.headers.get('x-api-key')||'';
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if (!apiKey || apiKey !== EXTERNAL_API_KEY) {
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return NextResponse.json(
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{ error: 'Unauthorized: Invalid API Key ' },
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{ status: 401 }
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);
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}
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try {
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// รับข้อมูล JSON Payload
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const templateData:DocumentTemplate = (await request.json());
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// console.log(templateData)
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// ต้องมี templateData.info.ticket_data เป็น json string เสมอ
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if (!templateData || !templateData.info ||
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!templateData.info.ticket_data ||
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typeof templateData.info.ticket_data !== "string"
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) {
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return NextResponse.json(
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{
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error: "template/generate json.info.ticket_data not avaliable",
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},
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{ status: 400 },
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);
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}
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const ticketObj = JSON.parse(templateData.info.ticket_data)
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const tid = String(ticketObj.tid)
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const fid = String(ticketObj.fid)
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const uid = String(ticketObj.uid)
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if(!tid||!fid||!uid)
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{
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return NextResponse.json(
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{
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error: "template/generate require json.info.ticket_data.(fid|tid|uid)",
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},
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{ status: 400 },
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);
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}
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//เปิดไฟล์ template
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const tmplPath = path.join(TMPL_PATH, `${path.basename(tid)}.docx`);
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let templateBuffer: Buffer = await readFile(tmplPath)
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// const output = await applyTemplate(templateBuffer, templateData, SECRET, PRIVATE_KEY_HEX, TICKET_SEC);
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const output = await docxPool.run({
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templateBuffer,
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templateData,
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secret: SECRET,
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privateKeyHex: PRIVATE_KEY_HEX,
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ticketSec: TICKET_SEC
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});
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const outputBuffer = Buffer.from(output);
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// สร้าง ReadableStream ของไฟล์ .docx
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// ในโค้ดจริง ส่วนนี้จะดึง Binary Buffer จาก Library เช่น docx, docxtemplater หรืออ่านจาก File System
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// const encoder = new TextEncoder();
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const docxStream = new ReadableStream({
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start(controller) {
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controller.enqueue(outputBuffer);
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controller.close();
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},
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});
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// 4. ส่ง Return เป็น Response พร้อม Stream และ Headers กำหนด MIME type ของ MS Word
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const dlFileName = encodeURIComponent(`${tid}_${fid}_${uid}XX`)
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return new NextResponse(docxStream, {
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status: 200,
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headers: {
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'Content-Type':
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'Content-Disposition': `attachment; filename="${dlFileName}.docx"`,
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'Cache-Control': 'no-store, max-age=0',
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},
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});
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} catch (error:any) {
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if ( error.code === 'ENOENT') {
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return NextResponse.json(
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{ error: 'NotFound: Invalid template ID or incorrect storage path'},
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{ status: 404 }
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);
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}
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console.error('Error generating docx:', error);
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return NextResponse.json(
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{ error: 'Failed to generate document payload'},
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{ status: 500 }
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);
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}
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} |