package org.gcube.portlets.admin;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;
import javax.servlet.http.HttpServletRequest;

import org.gcube.common.portal.PortalContext;
import org.gcube.oidc.rest.JWTToken;
import org.gcube.portal.oidc.lr62.OIDCUmaUtil;
import org.gcube.vomanagement.usermanagement.GroupManager;
import org.gcube.vomanagement.usermanagement.impl.LiferayGroupManager;
import org.gcube.vomanagement.usermanagement.model.GCubeGroup;

import com.liferay.portal.kernel.json.JSONFactoryUtil;
import com.liferay.portal.kernel.json.JSONObject;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.model.User;
import com.liferay.portal.util.PortalUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;

/**
 * Portlet implementation class RPTTokenReader
 */
public class RPTTokenReader extends MVCPortlet {

	@Override
	public void render(RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, IOException {
		GroupManager gm = new LiferayGroupManager();
		try { 
			User theUser = PortalUtil.getUser(renderRequest);
			List<GCubeGroup> userGroups = gm.listGroupsByUser(theUser.getUserId());
			List<String> userContexts = new ArrayList<String>();
			for (GCubeGroup g : userGroups) {
				if (g.getGroupName().equals(PortalContext.getConfiguration().getInfrastructureName())) {
					String context = gm.getInfrastructureScope(g.getGroupId());
					userContexts.add(context);
				}
				if (g.getParentGroupId() > 0) {
					String context = gm.getInfrastructureScope(g.getGroupId());
					userContexts.add(context);
				}
			}
			renderRequest.setAttribute("userGroups", userGroups);
			renderRequest.setAttribute("userContexts", userContexts);
		} catch (Exception e) {
			e.printStackTrace();
		}
		super.render(renderRequest, renderResponse);		
	}

	public void serveResource(ResourceRequest resourceRequest, ResourceResponse resourceResponse) throws IOException, PortletException {
		String context = ParamUtil.getString(resourceRequest, "context", null);
		System.out.println("Selected context="+context);
		HttpServletRequest httpReq = PortalUtil.getOriginalServletRequest(PortalUtil.getHttpServletRequest(resourceRequest));
		JWTToken umaToken = null;
		try {
			String username = PortalUtil.getUser(resourceRequest).getScreenName();
			umaToken = OIDCUmaUtil.getUMAToken(httpReq, username, context);
		} catch (Exception e) {
			e.printStackTrace();
			JSONObject jsonObject = JSONFactoryUtil.createJSONObject();
			jsonObject.put("success", false);
			jsonObject.put("comment", e.getMessage());
			resourceResponse.getWriter().println(jsonObject);	
			super.serveResource(resourceRequest, resourceResponse);
		}
		String toReturn =  umaToken.getAccessTokenString();
		resourceResponse.setContentType("application/json");
		JSONObject jsonObject = JSONFactoryUtil.createJSONObject();
		jsonObject.put("success", true);
		jsonObject.put("comment", toReturn);
		resourceResponse.getWriter().println(jsonObject);	
		super.serveResource(resourceRequest, resourceResponse);
	}
}