package httpserver;

import java.io.IOException;

import java.nio.file.Path;

import java.nio.file.Paths;

public class RequestHandler {

protected Path basedir;

public RequestHandler(String basedir) {

this.basedir = Paths.get(basedir).toAbsolutePath().normalize();

}

public HttpResponse handle(HttpRequest request) throws HttpError {

Path filepath = Paths.get(basedir.toString(), request.path).normalize();

// Check the path

if (!filepath.startsWith(basedir)) {

// The path is outside of the basedir.

throw new HttpError(HttpStatus.Forbidden(), request.path );

}

if (!filepath.toFile().exists()) {

// The file or directory does not exist.

throw new HttpError(HttpStatus.NotFound(), request.path );

}

HttpResponse response = null;

if (filepath.toFile().isDirectory()) {

response = new DirectoryResponse(request, filepath, basedir);

} else {

response = new FileResponse(request, filepath);

}

return response;

}

}