package gettingstartedwithrest;

import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Response;

import javax.ws.rs.GET;
import javax.ws.rs.core.MediaType;

//   http://localhost:8080/gettingstartedwithrest/encryption/encrypt?first=dogg&second=catt
//   http://localhost:8080/gettingstartedwithrest/encryption/decrypt?first=XI3CKRf2uFlyaBlpuxtIZg==

// This invokes the @get if path encrypt, not the post
// https://jersey.java.net/documentation/latest/jaxrs-resources.html

@Path("/encryption")
public class EncryptionResource {
	
	private final String STATUS_RUNNING = "Encryption Running";
	private final String SEPERATOR = "/";

	
	/* see http://stackoverflow.com/questions/7776283/use-post-method-of-jersey-rest-and-gets-params-from-url
	 * for the difference between get and post with parameters
	 */
	
	// http://localhost:8080/gettingstartedwithrest/encryption/encrypt?first=dogg&second=catt
	
    @GET
    @Path("encrypt")
    @Produces("application/json")
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    //@Consumes("application/x-www-form-urlencoded")
    public Response encryptUserQuery(@QueryParam("first") String firstParameter, 
                                     @QueryParam("second") String secondParameter) {
    	try {
        	String token = issueToken(firstParameter + SEPERATOR + secondParameter);
        	return Response.ok(token).build();
        } catch (Exception exception) {
            //return Response.status(Response.Status.UNAUTHORIZED).build();
            return Response.ok(exception.getLocalizedMessage()).build();
        }      
    }
    
    /* see http://stackoverflow.com/questions/7776283/use-post-method-of-jersey-rest-and-gets-params-from-url
	 * for the difference between get and post with parameters
	 */
    
    
    @POST
    @Path("encrypt-p")
    @Produces("application/json")
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    //@Consumes("application/x-www-form-urlencoded")
    public Response encryptUserForm(@FormParam("first") String firstParameter, 
                                     @FormParam("second") String secondParameter) {
    	try {
    		String token = issueToken(firstParameter + SEPERATOR + secondParameter);
        	return Response.ok(token).build();
        } catch (Exception exception) {
            //return Response.status(Response.Status.UNAUTHORIZED).build();
            return Response.ok(exception.getLocalizedMessage()).build();
        }      
    }

    
    // http://localhost:8080/gettingstartedwithrest/encryption/decrypt?first=XI3CKRf2uFlyaBlpuxtIZg==
    // special url char http://www.w3schools.com/tags/ref_urlencode.asp
    @GET
    @Path("decrypt")
    @Produces("application/json")
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    //@Consumes("application/x-www-form-urlencoded")
    public Response decryptUserQuery(@QueryParam("first") String firstParameter) {
    	try {
    		AESEncrypter encrypter = AESEncrypter.getDefaultEncrypter();
        	String token = encrypter.decrypt(firstParameter);
        	return Response.ok(token).build();
        } catch (Exception exception) {
            //return Response.status(Response.Status.UNAUTHORIZED).build();
            return Response.ok(exception.getLocalizedMessage()).build();
        }      
    }
    
    @POST
    @Path("decrypt-p")
    @Produces("application/json")
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    //@Consumes("application/x-www-form-urlencoded")
    public Response decryptUserForm(@FormParam("first") String firstParameter) {
    	try {
    		AESEncrypter encrypter = AESEncrypter.getDefaultEncrypter();
        	String token = encrypter.decrypt(firstParameter);
        	return Response.ok(token).build();
        } catch (Exception exception) {
            //return Response.status(Response.Status.UNAUTHORIZED).build();
            return Response.ok(exception.getLocalizedMessage()).build();
        }      
    }

    private String issueToken(String username) throws Exception {
        // Issue a token (can be a random String persisted to a database or a JWT token)
        // The issued token must be associated to a user
        // Return the issued token	
    	try {
			AESEncrypter encrypter = AESEncrypter.getDefaultEncrypter();
			return encrypter.encrypt(username);
			
		} catch (Exception e) {
			e.printStackTrace();
			throw new Exception("Failed to create encrypted token");
		}
    }
    
 // This method is called if TEXT_PLAIN is request
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String sayPlainTextHello() {
    	return STATUS_RUNNING + " (TEXT)";
    }

    // This method is called if XML is request
    @GET
    @Produces(MediaType.TEXT_XML)
    public String xmlStatus() {
    	return "<?xml version=\"1.0\"?>" + "<status> " + STATUS_RUNNING + " (XML) </status>";
    }
    
    // This method is called if JSON is request
 // This method is called if JSON is request
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public String jsonStatus() {
	  	return "{ \"status\" : \"" + STATUS_RUNNING + "\" }";
    }
      

    // This method is called if HTML is request
    @GET
    @Produces(MediaType.TEXT_HTML)
    public String htmlStatus() {
      return "<html> " + "<title>" + STATUS_RUNNING + "</title>"
          + "<body><h1>" + STATUS_RUNNING  + " (HTML) </body></h1>" + "</html> ";
    }
   
}