import PizZip from "pizzip";
import Docxtemplater from "docxtemplater";
import fs from "fs";
import path from "path";

export default async (req, res) => {
	if (req.method === "POST") {
		// Get the data from the request body
		const data = req.body;

		// log stats
		let ip = req.body.ip;
		if (ip === undefined)
			ip = req.headers["x-forwarded-for"] + " on " + req.headers["user-agent"];
		let date_time = new Date();
		let string =
			fs.readFileSync("ground_log.txt", "utf8") +
			"\n" +
			"[" +
			date_time +
			"]" +
			ip +
			" : " +
			data.geo_data +
			" : " +
			data.in_city;
		fs.writeFile("ground_log.txt", string, function (err) {
			if (err) {
				return console.error(err);
			}
		});

		//get wet coefficient
		let input_docx;
		if (data.wet_coef == 1.6) {
			if (data.rod_len == 2) input_docx = "wet_input_15.docx";
			else if (data.rod_len == 3) input_docx = "wet_input_3.docx";
		} else {
			if (data.rod_len == 2) input_docx = "dry_input_15.docx";
			else if (data.rod_len == 3) input_docx = "dry_input_3.docx";
		}

		// Load the docx file as binary content
		const content = fs.readFileSync(
			path.resolve(process.cwd(), input_docx),
			"binary"
		);

		const zip = new PizZip(content);

		const doc = new Docxtemplater(zip, {
			paragraphLoop: true,
			linebreaks: true,
		});

		try {
			// Render the document with data
			console.log(data);
			doc.render(data);

			// Generate the document as a buffer
			const buf = doc.getZip().generate({
				type: "nodebuffer",
				compression: "DEFLATE",
			});

			// Set headers for downloading the file
			res.setHeader("Content-Disposition", "attachment; filename=opis.docx");
			res.setHeader(
				"Content-Type",
				"application/vnd.openxmlformats-officedocument.wordprocessingml.document"
			);

			// Send the buffer as a response
			res.send(buf);
		} catch (error) {
			// Handle errors
			console.error(error);
			res.status(500).json({ error: error.message });
		}
	} else {
		// Handle non-POST requests
		res.setHeader("Allow", ["POST"]);
		res.status(405).end(`Method ${req.method} Not Allowed`);
	}
};