org.drugis.addis.config.controller.IndexController.java Source code

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Here is the source code for org.drugis.addis.config.controller.IndexController.java

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package org.drugis.addis.config.controller;

/*
 * Copyright 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.apache.commons.lang.StringUtils;
import org.drugis.addis.security.Account;
import org.drugis.addis.security.repository.AccountRepository;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.social.connect.ConnectionRepository;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.inject.Inject;
import javax.inject.Provider;
import javax.servlet.http.HttpServletRequest;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Principal;

@Controller
public class IndexController {

    final static Logger logger = LoggerFactory.getLogger(IndexController.class);

    private final static String DEFAULT_PATAVI_MCDA_WS_URI = "wss://patavi.drugis.org/ws";
    private final static String ADDIS_CORE_PATAVI_MCDA_WS_URI = getPataviMcdaWsUri();

    @Inject
    private Provider<ConnectionRepository> connectionRepositoryProvider;

    @Inject
    private AccountRepository accountRepository;

    private static String getPataviMcdaWsUri() {
        try {
            String uri;
            String envUri = System.getenv("ADDIS_CORE_PATAVI_MCDA_WS_URI");
            if (envUri != null && !envUri.isEmpty()) {
                uri = envUri;
            } else {
                uri = DEFAULT_PATAVI_MCDA_WS_URI;
            }
            logger.info("PATAVI_MCDA_WS_URI: " + uri);
            return uri;
        } catch (Exception e) {
            logger.error(
                    "can not find env variable PATAVI_MCDA_WS_URI fallback to using DEFAULT_PATAVI_MCDA_WS_URI: "
                            + DEFAULT_PATAVI_MCDA_WS_URI);
            return DEFAULT_PATAVI_MCDA_WS_URI;
        }
    }

    @RequestMapping("/")
    public String index(Principal currentUser, Model model, HttpServletRequest request) {
        model.addAttribute("connectionsToProviders", getConnectionRepository().findAllConnections());
        try {
            if (currentUser == null) {
                return "redirect:/signin";
            } else {
                Account account = accountRepository.findAccountByUsername(currentUser.getName());
                model.addAttribute(account);
                if (StringUtils.isNotEmpty(account.getEmail())) {
                    String md5String = DigestUtils.md5DigestAsHex(account.getEmail().getBytes());
                    model.addAttribute("userMD5", md5String); // user email MD5 hash needed to retrieve gravatar image
                }

                model.addAttribute("pataviMcdaWsUri", ADDIS_CORE_PATAVI_MCDA_WS_URI);
            }
        } catch (org.springframework.dao.EmptyResultDataAccessException e) {
            request.getSession().invalidate();
            return "redirect:/signin";
        }
        return "index";
    }

    private ConnectionRepository getConnectionRepository() {
        return connectionRepositoryProvider.get();
    }
}