package handlers;

import com.sun.net.httpserver.Headers;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.nio.file.Files;

public class FileHandler implements HttpHandler
{
    public void handle(HttpExchange exchange) throws IOException
    {
        boolean success = false;

        try
        {
            if (!exchange.getRequestMethod().equals("GET"))
            {
                exchange.sendResponseHeaders(HttpURLConnection.HTTP_BAD_METHOD, 0);
                exchange.getResponseBody().close();
            }
            else
            {
                String urlPath =  exchange.getRequestURI().toString();

                if (urlPath.equals(null) || urlPath.equals("/"))
                {
                    urlPath = "/index.html";
                }

                String filePath = "web" + urlPath;

                File file = new File(filePath);

                if (!file.exists())
                {
                    exchange.sendResponseHeaders(HttpURLConnection.HTTP_NOT_FOUND, 0);
                    OutputStream responseBody = exchange.getResponseBody();

                    File notFound = new File("web/HTML/404.html");

                    Files.copy(notFound.toPath(), responseBody);
                    exchange.getResponseBody().close();
                }

                exchange.sendResponseHeaders(HttpURLConnection.HTTP_OK, 0);
                OutputStream responseBody = exchange.getResponseBody();
                Files.copy(file.toPath(), responseBody);

                exchange.getResponseBody().close();
                success = true;
            }

            if (!success)
            {
                exchange.sendResponseHeaders(HttpURLConnection.HTTP_BAD_REQUEST, 0);
                exchange.getResponseBody().close();
            }
        }
        catch (IOException e)
        {
            exchange.sendResponseHeaders(HttpURLConnection.HTTP_SERVER_ERROR, 0);
            exchange.getResponseBody().close();
            e.printStackTrace();
        }
    }
}