/**
 *
 */
package org.gcube.datatransfer.resolver.services;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;

import org.gcube.datatransfer.resolver.services.error.ExceptionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * Oct 22, 2018
 */
@Path("docs")
public class UriResolverDocs {

	private static Logger logger = LoggerFactory.getLogger(UriResolverDocs.class);

	@GET
	@Produces({MediaType.TEXT_HTML})
	@Path("")
	public InputStream index(@Context HttpServletRequest req) throws WebApplicationException{
		logger.info(UriResolverDocs.class.getSimpleName() +" called");
		
		String requestURI = req.getRequestURI();
		try{
			
			
			if(requestURI == null)
				requestURI = "/index.html";
			
			String pathInfo = req.getPathInfo();
			logger.info("pathInfo {}",pathInfo);
			logger.info("request URI {}", requestURI);
			
	        String realPath = req.getServletContext().getRealPath("/docs/"+requestURI);
	        return new FileInputStream(new File(realPath));
		}catch (Exception e) {

			if(!(e instanceof WebApplicationException)){
				//UNEXPECTED EXCEPTION managing it as WebApplicationException
				String error = requestURI+" not found. Please, contact the support!";
				throw ExceptionManager.internalErrorException(req, error, this.getClass(), null);
			}
			//ALREADY MANAGED AS WebApplicationException
			logger.error("Exception:", e);
			throw (WebApplicationException) e;
		}
	}
}