/*
 * Copyright 2016-2017 Huawei Technologies Co., Ltd.
 *
 * 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.
 */

package org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.common;

import java.util.HashMap;
import java.util.Map;

import org.apache.commons.codec.binary.Base64;
import org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.common.restclient.RestfulResponse;
import org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.common.servicetoken.VnfmRestfulUtil;
import org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.service.constant.Constant;
import org.onap.vfc.nfvo.vnfm.svnfm.vnfmadapter.service.constant.ParamConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

/**
 * Provide function of getting vnfmInfo
 * <br/>
 *
 * @author
 * @version VFC 1.0 Aug 25, 2016
 */
public final class VnfmUtil {

    private static final Logger LOGGER = LoggerFactory.getLogger(VnfmUtil.class);

    private VnfmUtil() {

    }

    /**
     * <br>
     * 
     * @param vnfmId
     * @return
     * @since VFC 1.0
     */
    public static JSONObject getVnfmById(String vnfmId) {
        Map<String, String> headerMap = new HashMap<>(5);
        headerMap.put("Content-Type", "application/json");
        headerMap.put("Accept", "application/json");
        headerMap.put("X-TransactionId", "9999");
        headerMap.put("X-FromAppId", "esr-server");

        Base64 token = new Base64();
        String authen = new String(token.encode(("AAI:AAI").getBytes()));
        headerMap.put("Authorization", "Basic " + authen);
        LOGGER.info("getVimById headerMap: {}", headerMap.toString());

        RestfulResponse rsp = VnfmRestfulUtil.getRemoteResponse(String.format(ParamConstants.ESR_GET_VNFM_URL, vnfmId),
                VnfmRestfulUtil.TYPE_GET, headerMap, null);
        if(rsp == null) {
            LOGGER.error("funtion=getVnfmById, response is null.");
            return null;
        }
        if(rsp.getStatus() != Constant.HTTP_OK) {
            LOGGER.error("funtion=getVnfmById, status={}", rsp.getStatus());
            return null;
        }
        JSONObject esrVnfm = JSONObject.fromObject(rsp.getResponseContent());
        LOGGER.info("esrVnfm: {}", esrVnfm);
        JSONObject vnfmJson = parseEsrVnfm(vnfmId, esrVnfm);
        LOGGER.info("vnfmJson: {}", esrVnfm);
        return vnfmJson;
    }

    /**
     * <br>
     * 
     * @param vnfmId
     * @param
     *            esrVnfm
     *            http://172.30.3.34:80/aai/v11/external-system/esr-vnfm-list/esr-vnfm/6f78d29e-3c4b-4d41-a200-6d3b518fb874/esr-system-info-list
     *            {
     *            "esr-system-info": [
     *            {
     *            "esr-system-info-id": "2b0c1a80-1b95-4d28-b206-f9cb6d7f8d3a",
     *            "system-name": "hwvnfm",
     *            "type": "vnfm",
     *            "vendor": "huawei",
     *            "version": "v1.0",
     *            "service-url": "http://172.30.20.5:30001",
     *            "user-name": "admin",
     *            "password": "Huawei12#$",
     *            "system-type": "VNFM",
     *            "resource-version": "1508828777218"
     *            }
     *            ]
     *            }
     * @return
     *         vnfmJson
     *         {
     *         "vnfmId": "1234",
     *         "name": "vnfm",
     *         "type": "Tacker",
     *         "vimId": "",
     *         "vendor": "huawei",
     *         "version": "v1.0",
     *         "description": "vnfm",
     *         "certificateUrl": "",
     *         "url": "https://192.168.44.126:30001",
     *         "userName": "manoadmin",
     *         "password": "User@12345",
     *         "createTime": "2016-07-06 15:33:18"
     *         }
     * @since VFC 1.0
     */
    private static JSONObject parseEsrVnfm(String vnfmId, JSONObject esrVnfm) {
        JSONObject vnfmObj = new JSONObject();
        JSONObject esrSysInfo = esrVnfm.getJSONArray("esr-system-info").getJSONObject(0);
        vnfmObj.put(Constant.VNFMID, vnfmId);
        vnfmObj.put("name", esrSysInfo.getString("system-name"));
        vnfmObj.put("type", esrSysInfo.getString("type"));
        vnfmObj.put("vimId", "");
        vnfmObj.put("vendor", esrSysInfo.getString("vendor"));
        vnfmObj.put("version", esrSysInfo.getString("version"));
        vnfmObj.put("description", "");
        vnfmObj.put("certificateUrl", "");
        vnfmObj.put("url", esrSysInfo.getString("service-url"));
        vnfmObj.put("userName", esrSysInfo.getString("user-name"));
        vnfmObj.put("password", esrSysInfo.getString("password"));
        vnfmObj.put("createTime", "");
        return vnfmObj;
    }

    public static JSONObject mockForTest(String vnfmId) {
        String vInfo =
                "{\"vnfmId\":\"1234\", \"name\":\"vnfm\", \"type\":\"Tacker\", \"vimId\":\"\", \"vendor\":\"huawei\", \"version\":\"v1.0\", \"description\":\"vnfm\", \"certificateUrl\":\"\", \"url\":\"https://192.168.44.126:30001\", \"userName\":\"manoadmin\", \"password\":\"User@12345\", \"createTime\":\"2016-07-06 15:33:18\"}";
        JSONObject json = JSONObject.fromObject(vInfo);
        json.put(Constant.VNFMID, vnfmId);
        return json;
    }

    /**
     * Get vnfmInfo by ip
     * <br/>
     *
     * @param ip
     * @return
     * @since VFC 1.0
     */
    public static String getVnfmIdByIp(String ip) {
        RestfulResponse rsp =
                VnfmRestfulUtil.getRemoteResponse(ParamConstants.ESR_GET_VNFMS_URL, VnfmRestfulUtil.TYPE_GET, null);
        if(rsp == null || rsp.getStatus() != Constant.HTTP_OK) {
            return "";
        }

        JSONArray vnfmList = JSONArray.fromObject(rsp.getResponseContent());
        LOGGER.info("vnfm ip: {}, vnfmList: {}", ip, vnfmList);
        for(int i = 0; i < vnfmList.size(); i++) {
            if(vnfmList.getJSONObject(i).getString("url").contains(ip)) {
                return vnfmList.getJSONObject(i).getString(Constant.VNFMID);
            }
        }

        return "";
    }
}