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/**
 * Copyright 2018 BlazeMeter Inc.
 * 
 * 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 com.blazemeter.api.utils;

import com.blazemeter.api.exception.UnexpectedResponseException;
import com.blazemeter.api.http.HttpUtils;
import com.blazemeter.api.logging.Logger;
import com.blazemeter.api.logging.UserNotifier;
import net.sf.json.JSONException;
import net.sf.json.JSONObject;
import okhttp3.Credentials;
import okhttp3.Request;
import org.apache.commons.lang.StringUtils;


public class BlazeMeterUtils extends HttpUtils {

    private String apiKeyId;
    private String apiKeySecret;
    protected String address;
    protected String dataAddress;

    protected UserNotifier notifier;

    /**
     * @param apiKeyId     - BlazeMeter Api Key Id
     * @param apiKeySecret - BlazeMeter Api Key Secret
     * @param address      - BlazeMeter app address: https://a.blazemeter.com/
     * @param dataAddress  - BlazeMeter data address: https://data.blazemeter.com/
     * @param notifier     - user notifier, to show user information
     * @param logger       - logger, for log events of http requests / response etc.
     */
    public BlazeMeterUtils(String apiKeyId, String apiKeySecret,
                           String address, String dataAddress,
                           UserNotifier notifier, Logger logger) {
        super(logger);
        this.address = address;
        this.dataAddress = dataAddress;
        this.apiKeyId = apiKeyId;
        this.apiKeySecret = apiKeySecret;
        this.notifier = notifier;
    }


    public BlazeMeterUtils(String address, String dataAddress, UserNotifier notifier, Logger logger) {
        this("", "", address, dataAddress, notifier, logger);
    }

    protected boolean isValidCredantials(String apiKeyId, String apiKeySecret) {
        return !StringUtils.isBlank(apiKeyId) && !StringUtils.isBlank(apiKeySecret);
    }

    @Override
    protected Request.Builder addRequiredHeader(Request.Builder requestBuilder) {
        return isValidCredantials(apiKeyId, apiKeySecret) ?
                requestBuilder.addHeader(AUTHORIZATION, Credentials.basic(apiKeyId, apiKeySecret)) :
                requestBuilder;
    }

    @Override
    protected JSONObject processResponse(String response) {
        String error = extractErrorMessage(response);
        if (error != null) {
            logger.error("Received response with the following error: " + error);
            throw new UnexpectedResponseException("Received response with the following error: " + error);
        }
        return JSONObject.fromObject(response);
    }

    @Override
    protected String extractErrorMessage(String response) {
        if (response != null && !response.isEmpty()) {
            try {
                JSONObject jsonResponse = JSONObject.fromObject(response);
                JSONObject errorObj = jsonResponse.getJSONObject("error");
                if (errorObj.containsKey("message")) {
                    return errorObj.getString("message");
                }
            } catch (JSONException ex) {
                logger.debug("Cannot parse response: " + response, ex);
                return "Cannot parse response: " + response;
            }
        }
        return null;
    }

    public UserNotifier getNotifier() {
        return notifier;
    }

    public String getAddress() {
        return address;
    }

    public String getDataAddress() {
        return dataAddress;
    }

    public void setApiKeyId(String apiKeyId) {
        this.apiKeyId = apiKeyId;
    }

    public void setApiKeySecret(String apiKeySecret) {
        this.apiKeySecret = apiKeySecret;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public void setDataAddress(String dataAddress) {
        this.dataAddress = dataAddress;
    }

    public static long getCheckTimeout() {
        try {
            return Long.parseLong(System.getProperty("bzm.checkTimeout", "10000"));
        } catch (NumberFormatException ex) {
            return 10000;
        }
    }
}