D-Net

package eu.dnetlib.data.claims.utils;

import com.google.gson.Gson;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.io.StringReader;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.Arrays;

import java.util.List;

public class ManagerUtils {

    private static String registryAPIForManagerEmails;

    private String id;

    private String email;

    private String name;

    private String memberSince;

    private final static Logger log = LogManager.getLogger(ManagerUtils.class);

    public String getRegistryAPIForManagerEmails() { return registryAPIForManagerEmails; }

    public void setRegistryAPIForManagerEmails(String registryAPIForManagerEmails) { ManagerUtils.registryAPIForManagerEmails = registryAPIForManagerEmails; }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getId() {

        return id;

    }

    public void setId(String id) {

        this.id = id;

    }

    public String getEmail() {

        return email;

    }

    public void setEmail(String email) {

        this.email = email;

    }

    public String getMemberSince() {

        return memberSince;

    }

    public void setMemberSince(String memberSince) {

        this.memberSince = memberSince;

    }

    public  List<ManagerUtils> getManagersByEmail(String community) {

        String url = registryAPIForManagerEmails.replace("{community}", community);

        URL obj = null;

        String responseStr = null;

        log.debug("Registry url is " + url);

        try {

            obj = new URL(url);

            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

             log.debug("Get manager emails from registry 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 manager emails from registry ", e);

            return null;

        }

        return json2ManagerUtils(responseStr);

    }

    class ManagersResponse {

        public List<ManagerUtils> response;

        public List<ManagerUtils> getResponse() {

            return response;

        }

        public void setResponse(List<ManagerUtils> response) {

            this.response = response;

        }

    }

    private List<ManagerUtils> json2ManagerUtils(String json){

        log.debug("Try to create List<ManagerUtils> 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();

        ManagersResponse managersResponse = null;

        List<ManagerUtils> managerUtilsList = null;

        try {

            ManagerUtils[] testCase = gson.fromJson(br, ManagerUtils[].class);

            managerUtilsList = Arrays.asList(testCase);

        }catch(Throwable e){

            log.debug("Error in parsing json response. Given json is : "+json, e);

            e.printStackTrace();

            return null;

        }

        log.debug("Original response.........: "+managerUtilsList.size());

        return managerUtilsList;

    }

    public Boolean isCommunityManager(String communityId, String userMail) {

        List<ManagerUtils> managerUtils = this.getManagersByEmail(communityId);

        if(managerUtils != null) {

            for(ManagerUtils manager : managerUtils) {

                if(manager.getEmail() != null && manager.getEmail().equals(userMail)) {

                    return true;

                }

            }

        }

        return false;

    }

    @Override

    public String toString() {

        return "ManagerUtils{" +

                "id='" + id + '\'' +

                ", email='" + email + '\'' +

                ", name='" + name + '\'' +

                ", memberSince='" + memberSince + '\'' +

                '}';

    }

}