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135 lines
4.3 KiB
TypeScript
135 lines
4.3 KiB
TypeScript
import { NextResponse } from "next/server";
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import { DocumentTemplate,applyTemplate} from "@/lib/lib-tmpl";
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export const runtime = "nodejs";
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const DOCX_CONTENT_TYPE =
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"application/vnd.openxmlformats-officedocument.wordprocessingml.document";
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// cap เดียวกับ N4 (app/actions/files.ts) — route นี้เปิดกว้างให้ภายนอกยิงได้
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// ต้องเช็คขนาดก่อนอ่านเข้าหน่วยความจำ กัน DoS (bodySizeLimit ครอบเฉพาะ Server Actions)
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const MAX_UPLOAD_BYTES = 100 * 1024 * 1024; // 100MB
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const TICKET_SEC = Number(process.env.TICKET_SEC||'300')
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export async function POST(request: Request) {
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try {
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const formData = await request.formData();
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const template = formData.get("template");
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const dataFile = formData.get("data");
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const dataJson = formData.get("dataJson");
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const TEST_SECRET = String(formData.get("secret")||"")
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const TEST_PRIVATE_KEY_HEX = String(formData.get("private_key")||"")
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// ตรวจสอบ Template
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if (!(template instanceof File)) {
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return NextResponse.json(
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{
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error: 'Missing DOCX file in field "template".',
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},
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{ status: 400 },
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);
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}
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if (template.type !== DOCX_CONTENT_TYPE &&
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!template.name.toLowerCase().endsWith(".docx") &&
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template.size > MAX_UPLOAD_BYTES
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) {
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return NextResponse.json(
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{
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error: 'Field "template" must be a .docx file and not exceeds the 100MB size limit.',
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},
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{ status: 400 },
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);
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}
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// อ่าน JSON
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let templateData: DocumentTemplate;
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// JSON ผิด syntax เป็นความผิดของฝั่งผู้เรียก — คืน 400 ไม่ใช่ 500
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// (catch กลางท้ายฟังก์ชันสงวนไว้ให้ error ของระบบเท่านั้น)
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try {
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if (typeof dataJson === "string" && dataJson.length > 0) {
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// กรณีส่ง JSON ผ่าน form field
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templateData = JSON.parse(dataJson) as DocumentTemplate;
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} else if (dataFile instanceof File) {
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if (dataFile.size > MAX_UPLOAD_BYTES) {
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return NextResponse.json(
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{
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error: 'Field "data" exceeds the 100MB size limit.',
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},
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{ status: 400 },
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);
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}
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// กรณี upload data.json
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const text = await dataFile.text();
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templateData = JSON.parse(text) as DocumentTemplate;
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} else {
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return NextResponse.json(
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{
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error:
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'Missing JSON data. Send either "data" file or "dataJson" field.',
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},
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{ status: 400 },
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);
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}
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} catch (error) {
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return NextResponse.json(
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{
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error: `Invalid JSON data (${error instanceof Error ? error.message : "parse error"
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}).`,
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},
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{ status: 400 },
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);
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}
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// JSON ต้องเป็น object
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if (
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templateData === null ||
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typeof templateData !== "object" ||
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Array.isArray(templateData)
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) {
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return NextResponse.json(
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{
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error: "JSON data must be an object.",
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},
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{ status: 400 },
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);
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}
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// -----------------------------
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// Template File → Buffer
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// -----------------------------
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let templateBuffer: Buffer = Buffer.from(
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await template.arrayBuffer(),
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);
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const output = await applyTemplate(templateBuffer,templateData,TEST_SECRET,TEST_PRIVATE_KEY_HEX,TICKET_SEC);
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// -----------------------------
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// ส่ง DOCX กลับ
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// -----------------------------
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if(templateData?.info?.ticket_data)
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return new NextResponse(output as BodyInit, {
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status: 200,
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headers: {
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"Content-Type": DOCX_CONTENT_TYPE,
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"Content-Disposition":
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'attachment; filename="generated-document.docx"',
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"Content-Length": String(output.length),
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},
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});
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} catch (error) {
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console.error(error);
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return NextResponse.json(
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{
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error:
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error instanceof Error
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? error.message
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: "Internal Server Error",
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},
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{ status: 500 },
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);
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}
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}
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