// const express = require('express');
// const serveIndex = require('serve-index');
// const bodyParser = require('body-parser');
// const path = require('path');
// const cors = require('cors');

// const app = express();
// const port = 3000;

// // Enable CORS for all routes
// app.use(cors());

// app.use(bodyParser.json());

// // Initial directory path
// let currentDirectory = path.join(__dirname, 'public');

// // Set root path for directory listing
// app.use('/', express.static(currentDirectory), serveIndex(currentDirectory, { icons: true }));

// // Start the server
// app.listen(port, () => {
//   console.log(`Server is running on http://localhost:${port}`);
// });


const express = require("express");
const path = require("path");
const fs = require("fs");
const app = express();

const listingPath = path.join(__dirname, "public");

app.get("*", (req, res) => {
	const decodedPath = decodeURIComponent(req.path);
	const filePath = path.join(listingPath, decodedPath);

  if (!fs.existsSync(filePath)) {
    return res.status(404).end();
  }

  if (fs.statSync(filePath).isDirectory()) {
    const filesInDir = fs.readdirSync(filePath);
    const links = filesInDir.map(file => {
		const encodedFile = encodeURIComponent(file);
		const fileLink = path.join(req.path, encodedFile);
		
		let linkAttributes = "";
		let fileLocationEncoding = ""
		console.log(fileLink)
		let convertedString = fileLink.replace(/\\/g, '/');
		console.log(convertedString)
		// Check if the file is of a specific type that should open in a new window/tab
		const fileExtension = path.extname(file).toLowerCase();
		if (isFileTypeToOpenInNewTab(fileExtension)) {
			fileLocationEncoding = 'http://localhost:3000/' + convertedString
			linkAttributes = `onclick="window.open('${fileLocationEncoding}', 'fileWindow', 'width=600,height=400');"`;
			return `<li ${linkAttributes}>${file}</li>`;
		} else {
			return `<li><a href="${fileLink}" ${linkAttributes}>${file}</a></li>`;
		}
	  
		
	  });

    return res.send(`<ul>${links.join("")}</ul>`);
  } else {
    const fileExtension = path.extname(filePath).toLowerCase();

    if (fileExtension === ".pdf") {
      // For PDF files, send the file to be displayed in the browser.
      const fileStream = fs.createReadStream(filePath);
      fileStream.pipe(res);
    } else {
      // For other file types, set content type and send file.
      const contentType = getContentType(fileExtension);
      res.set("Content-Type", contentType);
      return res.sendFile(filePath);
    }
  }
});

// Function to get content type based on file extension
function getContentType(fileExtension) {
  switch (fileExtension) {
    case ".txt":
      return "text/plain";
    case ".png":
      return "image/png";
    // Add more content types as needed
    default:
      return "application/octet-stream";
  }
}

// Function to check if the file type should open in a new window/tab
function isFileTypeToOpenInNewTab(fileExtension) {
	const supportedFileTypes = [".pdf", ".png", ".txt"]; // Add more file types as needed
	return supportedFileTypes.includes(fileExtension);
  }

const PORT = 3000;
app.listen(PORT, () => {
  console.log("Server is running on http://localhost:" + PORT);
});