server.ts

import { serve, RequestHandler } from 'bun';
import { join, resolve } from 'path';
import { readFileSync, existsSync } from 'fs';
import { config } from 'dotenv';
import mime from 'mime';

// Load environment variables from .env file
config();

// Get the DOCS directory from environment variables
const { DOCS } = process.env as { DOCS: string };

// Define the directory to serve
const docsDir = resolve(DOCS);

const handler: RequestHandler = (request) => {
  const url = new URL(request.url);
  let filePath = resolve(join(docsDir, url.pathname));

  console.log(`Request URL: ${url.pathname}`);
  console.log(`File Path: ${filePath}`);

  // Default to serving index.html for root and directories
  if (url.pathname === '/' || url.pathname.endsWith('/')) {
    filePath = join(filePath, 'index.html');
  }

  console.log(`Final File Path: ${filePath}`);

  // Check if the file exists
  if (existsSync(filePath)) {
    // Try to read and return the file content
    try {
      // Determine the content type based on file extension
      const contentType = mime.getType(filePath) || 'text/plain';

      // Read file contents as a buffer
      const content = readFileSync(filePath);
      return new Response(content, {
        headers: { 'Content-Type': contentType },
      });
    } catch (err) {
      console.error(`Error reading file: ${err}`);
      // If there's an error reading the file, return a 500 response
      return new Response('Internal Server Error', { status: 500 });
    }
  } else {
    console.error('File not found');
    // If the file does not exist, return a 404 response
    return new Response('File not found', { status: 404 });
  }
};

serve({
  fetch: handler,
  port: 8000, // You can change the port if needed
});

console.log(`Serving files from ${docsDir} on http://localhost:8000`);