init: First version

app/resume/download/route.ts

@@ -0,0 +1,59 @@
+import resumeList, { Resume } from "@/_data/resumeList";
+import { NextRequest } from "next/server";
+import { PDFDocument, PDFPage } from "pdf-lib";
+
+export async function GET(req: NextRequest): Promise<Response>
+{
+	const type: string | null = req.nextUrl.searchParams.get("type");
+	const resume: Resume | undefined = findResume(type);
+
+	if (!resume)
+		return error(400, "'type' parameter is invalid");
+
+	if (!process.env.RESUME_URL)
+		return error(500, "Cannot find file location.");
+
+	try
+	{
+		// Fetch the PDF file from the remote URL using the fetch API
+		const response: Response = await fetch(process.env.RESUME_URL as string);
+
+		if (!response.ok)
+			return error(500, "Failed to fetch PDF file");
+
+		// Load the PDF document
+		const pdfData: ArrayBuffer = await response.arrayBuffer();
+		const srcDoc: PDFDocument = await PDFDocument.load(pdfData);
+
+		// Create a new PDF document with the specified page
+		const newDoc: PDFDocument = await PDFDocument.create();
+		const [page]: PDFPage[] = await newDoc.copyPages(srcDoc, [resume.pageIndex]);
+		newDoc.addPage(page);
+
+		// Serialize the new PDF document
+		const pdfBytes: Uint8Array = await newDoc.save();
+
+		// Send the PDF page as a response
+		return new Response(
+			Buffer.from(pdfBytes),
+			{
+				// Set response headers for PDF file
+				headers: {
+					"Content-Type": "application/pdf",
+					"Content-Disposition": `inline; filename="${resume.fileName.replaceAll("\"", "'")}.pdf"`
+				}
+			}
+		);
+	}
+	catch (ex)
+	{
+		console.error("Error processing PDF:", ex);
+		return error(500, "Failed to process PDF file");
+	}
+}
+
+const findResume = (type: string | null): Resume | undefined =>
+	resumeList.find(i => i.key === type) ?? resumeList.find(i => i.default);
+
+const error = (status: number, message: string): Response =>
+	new Response(message, { status });