/*******************************************************************************
 *  ============LICENSE_START===================================================
 *  org.onap.dmaap
 *  ============================================================================
 *  Copyright © 2019 Nokia Intellectual Property. All rights reserved.
 *  ============================================================================
 *  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.
 *  ============LICENSE_END=====================================================
 ******************************************************************************/
package org.onap.dmaap.dmf.mr.service.impl;

import com.google.common.base.Preconditions;
import java.util.Date;
import org.apache.http.HttpStatus;
import org.onap.dmaap.dmf.mr.beans.DMaaPContext;
import org.onap.dmaap.dmf.mr.exception.DMaaPErrorMessages;
import org.onap.dmaap.dmf.mr.exception.DMaaPResponseCode;
import org.onap.dmaap.dmf.mr.exception.ErrorResponse;
import org.onap.dmaap.dmf.mr.utils.Utils;

class ErrorResponseProvider {

    private String clientId;
    private String topicName;
    private String consumerGroup;
    private String remoteHost;
    private String publisherId;
    private String publisherIp;
    private DMaaPErrorMessages errorMessages;

    private ErrorResponseProvider() {

    }

    ErrorResponse getIpBlacklistedError(String remoteAddr) {
        return new ErrorResponse(HttpStatus.SC_FORBIDDEN,
            DMaaPResponseCode.ACCESS_NOT_PERMITTED.getResponseCode(),
            "Source address [" + remoteAddr + "] is blacklisted. Please contact the cluster management team.",
            null, Utils.getFormattedDate(new Date()), topicName, publisherId,
            publisherIp, consumerGroup + "/" + clientId, remoteHost);
    }

    ErrorResponse getTopicNotFoundError() {
        return new ErrorResponse(HttpStatus.SC_NOT_FOUND,
            DMaaPResponseCode.RESOURCE_NOT_FOUND.getResponseCode(),
            errorMessages.getTopicNotExist() + "-[" + topicName + "]", null, Utils.getFormattedDate(new Date()),
            topicName, publisherId, publisherIp, consumerGroup + "/" + clientId, remoteHost);
    }

    ErrorResponse getAafAuthorizationError(String permission, String action) {
        return new ErrorResponse(HttpStatus.SC_UNAUTHORIZED,
            DMaaPResponseCode.ACCESS_NOT_PERMITTED.getResponseCode(),
            errorMessages.getNotPermitted1() + action + errorMessages.getNotPermitted2() + topicName + " on "
                + permission,
            null, Utils.getFormattedDate(new Date()), topicName, publisherId, publisherIp, consumerGroup + "/" + clientId,
            remoteHost);
    }

    ErrorResponse getServiceUnavailableError(String msg) {
        return new ErrorResponse(HttpStatus.SC_SERVICE_UNAVAILABLE,
            DMaaPResponseCode.SERVER_UNAVAILABLE.getResponseCode(),
            errorMessages.getServerUnav() + msg, null, Utils.getFormattedDate(new Date()), topicName,
            publisherId, publisherIp, consumerGroup + "/" + clientId, remoteHost);
    }

    ErrorResponse getConcurrentModificationError() {
        return new ErrorResponse(HttpStatus.SC_CONFLICT,
            DMaaPResponseCode.TOO_MANY_REQUESTS.getResponseCode(),
            "Couldn't respond to client, possible of consumer requests from more than one server. Please contact MR team if you see this issue occurs continously", null,
            Utils.getFormattedDate(new Date()), topicName, publisherId, publisherIp, consumerGroup + "/" + clientId, remoteHost);
    }

    ErrorResponse getGenericError(String msg) {
        return new ErrorResponse(HttpStatus.SC_SERVICE_UNAVAILABLE,
            DMaaPResponseCode.SERVER_UNAVAILABLE.getResponseCode(),
            "Couldn't respond to client, closing cambria consumer" + msg, null,
            Utils.getFormattedDate(new Date()), topicName, publisherId, publisherIp, consumerGroup + "/" + clientId, remoteHost);
    }

    public static class Builder {

        private String clientId;
        private String topicName;
        private String consumerGroup;
        private String remoteHost;
        private String publisherId;
        private String publisherIp;
        DMaaPErrorMessages errorMessages;

        Builder withErrorMessages(DMaaPErrorMessages errorMessages) {
            this.errorMessages = errorMessages;
            return this;
        }

        Builder withTopic(String topic) {
            this.topicName = topic;
            return this;
        }

        Builder withClient(String client) {
            this.clientId = client;
            return this;
        }

        Builder withConsumerGroup(String consumerGroup) {
            this.consumerGroup = consumerGroup;
            return this;
        }

        Builder withRemoteHost(String remoteHost) {
            this.remoteHost = remoteHost;
            return this;
        }

        Builder withPublisherId(String publisherId) {
            this.publisherId = publisherId;
            return this;
        }

        Builder withPublisherIp(String publisherIp) {
            this.publisherIp = publisherIp;
            return this;
        }

        public ErrorResponseProvider build() {
            Preconditions.checkArgument(errorMessages!=null);
            ErrorResponseProvider errRespProvider = new ErrorResponseProvider();
            errRespProvider.errorMessages = this.errorMessages;
            errRespProvider.clientId = this.clientId;
            errRespProvider.consumerGroup = this.consumerGroup;
            errRespProvider.topicName = this.topicName;
            errRespProvider.remoteHost = this.remoteHost;
            errRespProvider.publisherId = this.publisherId;
            errRespProvider.publisherIp = this.publisherIp;
            return errRespProvider;
        }
    }
}