//package eu.dnetlib.uoaadmintools.handlers.utils;
//
//import org.apache.log4j.Logger;
//
//import javax.servlet.http.Cookie;
//import javax.servlet.http.HttpServletRequest;
//import java.io.BufferedReader;
//import java.io.InputStreamReader;
//import java.io.StringReader;
//import java.net.HttpURLConnection;
//import java.net.URL;
//import java.util.Enumeration;
//
//import com.google.gson.Gson;
//
///**
// * Created by argirok on 27/2/2018.
// */
//public class AuthorizationUtils {
//    private final Logger log = Logger.getLogger(this.getClass());
//    private String userInfoUrl = null;
////    private String communityAPI ="";
////    List<String> adminRoles = new ArrayList<String>(Arrays.asList("Super Administrator",  "Portal Administrator"));
//    private String originServer= null;
//    public Boolean checkCookies(HttpServletRequest request){
//        Boolean valid = true;
//        String cookieValue = this.getCookie(request,"AccessToken");
//        if(cookieValue == null || cookieValue.isEmpty()){
//            log.info("no cookie available ");
//            valid = false;
//        }else {
//            String headerValue = this.getHeadersInfo(request, "x-xsrf-token");
//            if(headerValue == null || headerValue.isEmpty()){
//                log.info("no header available ");
//                valid = false;
//            }else{
//                if(!cookieValue.equals(headerValue)){
//                    log.info("no proper header or cookie ");
//                    valid = false;
//                }else if(!hasValidOrigin(this.getHeadersInfo(request, "origin"))){
//                    log.info("no proper origin ");
//                    valid = false;
//                }
//            }
//        }
//        return valid;
//    }
//    public String getToken(HttpServletRequest request){
//        return this.getHeadersInfo(request, "x-xsrf-token");
//    }
//    private String getCookie(HttpServletRequest request, String cookieName){
//        if(request.getCookies() == null){
//            return null;
//        }
//        for(Cookie c: request.getCookies()){
////            log.debug("cookie "+ c.getName()+ " "+ c.getValue());
//            if(c.getName().equals(cookieName)){
//                return c.getValue();
//            }
//
//        }
//        return null;
//    }
//    private String getHeadersInfo(HttpServletRequest request, String name) {
//
//        Enumeration headerNames = request.getHeaderNames();
//        while (headerNames.hasMoreElements()) {
//            String key = (String) headerNames.nextElement();
//            String value = request.getHeader(key);
////            log.debug(" key: "+ key+" value: "+ value);
//            if(name.equals(key)){
//                return value;
//            }
//        }
//        return null;
//    }
//    public boolean hasValidOrigin(String origin) {
//        if (origin != null && origin.indexOf(originServer)!=-1) {
//            return true;
//        }
//        log.debug("Not valid origin. Origin server is \"" + origin + "\", but expected value is \"" + originServer + "\". If the expec cted value is not right, check properties file. ");
//        return false;
//    }
//    public  UserInfo getUserInfo(String accessToken){
//        String url=userInfoUrl+accessToken;
//        URL obj = null;
//        String responseStr=null;
////        log.debug("User info url is "+url);
//
//        try {
//            obj = new URL(url);
//            HttpURLConnection con = (HttpURLConnection) obj.openConnection();
//            if (con.getResponseCode() != 200) {
//                log.debug("User info response code is: " + con.getResponseCode());
//                return null;
//            }
//            BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
//            StringBuffer response = new StringBuffer();
//            String inputLine;
//            while ((inputLine = in.readLine()) != null) {
//                response.append(inputLine).append("\n");
//            }
//            in.close();
//            responseStr = response.toString();
//        }catch(Exception e){
//            log.error("An error occured while trying to fetch user info ",e);
//            return null;
//        }
//        return json2UserInfo(responseStr);
//    }
//    private  UserInfo json2UserInfo(String json) {
//
////        log.debug("Try to create userInfo class from json: "+json);
//        if (json == null){
//            return null;
//        }
//
//        BufferedReader br = new BufferedReader(new StringReader(json));
//        //convert the json string back to object
//        Gson gson = new Gson();
//        UserInfo userInfo = null;
//        try {
//            userInfo = gson.fromJson(br, UserInfo.class);
//        }catch(Exception e){
//            log.debug("Error in parsing json response. Given json is : "+json, e);
//            return null;
//        }
//
////        log.debug("Original response.........: "+userInfo.toString());
//        try {
//            if(userInfo != null && userInfo.getEdu_person_entitlements() != null ) {
//
//                for (int i = 0; i < userInfo.getEdu_person_entitlements().size(); i++) {
//                    String role = userInfo.getEdu_person_entitlements().get(i);
////                    log.debug("AAI role: "+role);
//                    role = role.split(":")[role.split(":").length-1];
//                    role = role.replace("+"," ");
////                    log.debug("Adding parsed role : "+role);
//                    userInfo.getEdu_person_entitlements().set(i,role);
//                }
//            }
//        }catch(Exception e){
//            log.debug("Error in parsing  Edu_person_entitlements : ",e);
//            return null;
//        }
////        log.debug("After handling roles : "+userInfo.toString());
//
//
//        return userInfo;
//    }
//    public boolean isAuthorized(String token) {
//        UserInfo userInfo = getUserInfo(token);
//        if (userInfo != null ) {
//            return true;
//        } else {
//            log.debug(" User has no Valid UserInfo");
//            return false;
//        }
//
//    }
//
//    public String getUserInfoUrl() {
//        return userInfoUrl;
//    }
//
//    public String getOriginServer() {
//        return originServer;
//    }
//
//    public void setUserInfoUrl(String userInfoUrl) {
//        this.userInfoUrl = userInfoUrl;
//    }
//
//    public void setOriginServer(String originServer) {
//        this.originServer = originServer;
//    }
//    //    private boolean hasRole(List<String> givenRoles, List<String> authorizedRoles) {
////        log.debug("It's  registered with role " + givenRoles);
////        for (String gRole : givenRoles) {
////            if (authorizedRoles.indexOf(gRole) != -1) {
////                return true;
////            }
////        }
////        log.debug("Not Authorized. Authorized roles are" + authorizedRoles);
////        return false;
////
////    }
////    private boolean isCommunityManager(String community, String email) {
////
////        CommunityInfo communityInfo = getCommunityInfo(community);
////        if(communityInfo != null && communityInfo.getManagers() != null ) {
////
////            for (int i = 0; i < communityInfo.getManagers().size(); i++) {
////                String manager = communityInfo.getManagers().get(i);
////                log.debug("Community manager: "+manager);
////
////            }
////        }
////        return false;
////
////    }
////    private CommunityInfo getCommunityInfo(String community) {
////        String url = userInfoUrl + community;
////        URL obj = null;
////        String responseStr = null;
////        log.debug("Community info url is " + url);
////
////        try {
////            obj = new URL(url);
////            HttpURLConnection con = (HttpURLConnection) obj.openConnection();
////            log.debug("User info response code is: " + con.getResponseCode());
////            if (con.getResponseCode() != 200) {
////                return null;
////            }
////            BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
////            StringBuffer response = new StringBuffer();
////            String inputLine;
////            while ((inputLine = in.readLine()) != null) {
////                response.append(inputLine).append("\n");
////            }
////            in.close();
////            responseStr = response.toString();
////        } catch (Exception e) {
////            log.error("An error occured while trying to fetch user info ", e);
////            return null;
////        }
////        return json2CommunityInfo(community);
////    }
////    private  CommunityInfo json2CommunityInfo(String json){
////
////        log.debug("Try to create CommunityInfo class from json: "+json);
////        if (json == null){
////            return null;
////        }
////
////        BufferedReader br = new BufferedReader(new StringReader(json));
////        //convert the json string back to object
////        Gson gson = new Gson();
////        CommunityInfo communityInfo = null;
////        try {
////            communityInfo = gson.fromJson(br, CommunityInfo.class);
////        }catch(Exception e){
////            log.debug("Error in parsing json response. Given json is : "+json, e);
////            return null;
////        }
////
////        log.debug("Original response.........: "+communityInfo.toString());
////
////
////
////        return communityInfo;
////    }
//}