/*-
 * ============LICENSE_START=======================================================
 * SDC
 * ================================================================================
 * Copyright (C) 2017 AT&T 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.openecomp.sdc.be.servlets;

import javax.inject.Singleton;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.openecomp.sdc.be.components.impl.AdditionalInformationBusinessLogic;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.dao.api.ActionStatus;
import org.openecomp.sdc.be.datatypes.elements.AdditionalInfoParameterInfo;
import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
import org.openecomp.sdc.be.impl.WebAppContextWrapper;
import org.openecomp.sdc.be.model.AdditionalInformationDefinition;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.exception.ResponseFormat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.WebApplicationContext;

import com.jcabi.aspects.Loggable;

import fj.data.Either;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
@Loggable(prepend = true, value = Loggable.DEBUG, trim = false)
@Path("/v1/catalog")
@Api(value = "Additional Information Servlet", description = "Additional Information Servlet")
@Singleton
public class AdditionalInformationServlet extends BeGenericServlet {

    private static final Logger log = LoggerFactory.getLogger(AdditionalInformationServlet.class);

    /**
     *
     * @param resourceId
     * @param data
     * @param request
     * @param userUserId
     * @return
     */
    @POST
    @Path("/resources/{resourceId}/additionalinfo")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Create Additional Information Label and Value", httpMethod = "POST", notes = "Returns created Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 201, message = "Additional information created"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response createResourceAdditionalInformationLabel(@ApiParam(value = "resource id to update with new property", required = true) @PathParam("resourceId") final String resourceId,
            @ApiParam(value = "Additional information key value to be created", required = true) String data, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userUserId) {

        return createAdditionalInformationLabelForComponent(NodeTypeEnum.Resource, resourceId, request, userUserId, data);

    }

    /**
     *
     * @param serviceId
     * @param data
     * @param request
     * @param userUserId
     * @return
     */
    @POST
    @Path("/services/{serviceId}/additionalinfo")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Create Additional Information Label and Value", httpMethod = "POST", notes = "Returns created Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 201, message = "Additional information created"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response createServiceAdditionalInformationLabel(@ApiParam(value = "service id to update with new property", required = true) @PathParam("serviceId") final String serviceId,
            @ApiParam(value = "Additional information key value to be created", required = true) String data, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userUserId) {

        return createAdditionalInformationLabelForComponent(NodeTypeEnum.Service, serviceId, request, userUserId, data);

    }

    /**
     *
     * @param resourceId
     * @param labelId
     * @param data
     * @param request
     * @param userId
     * @return
     */
    @PUT
    @Path("/resources/{resourceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Update Additional Information Label and Value", httpMethod = "PUT", notes = "Returns updated Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "Additional information updated"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response updateResourceAdditionalInformationLabel(@ApiParam(value = "resource id to update with new property", required = true) @PathParam("resourceId") final String resourceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @ApiParam(value = "Additional information key value to be created", required = true) String data, @Context final HttpServletRequest request,
            @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return updateAdditionalInformationLabelForComponent(NodeTypeEnum.Resource, resourceId, labelId, request, userId, data);

    }

    /**
     *
     * @param serviceId
     * @param labelId
     * @param data
     * @param request
     * @param userId
     * @return
     */
    @PUT
    @Path("/services/{serviceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Update Additional Information Label and Value", httpMethod = "PUT", notes = "Returns updated Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "Additional information updated"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response updateServiceAdditionalInformationLabel(@ApiParam(value = "service id to update with new property", required = true) @PathParam("serviceId") final String serviceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @ApiParam(value = "Additional information key value to be created", required = true) String data, @Context final HttpServletRequest request,
            @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return updateAdditionalInformationLabelForComponent(NodeTypeEnum.Service, serviceId, labelId, request, userId, data);

    }

    /**
     *
     * @param resourceId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    @DELETE
    @Path("/resources/{resourceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Create Additional Information Label and Value", httpMethod = "DELETE", notes = "Returns deleted Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "Additional information deleted"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response updateResourceAdditionalInformationLabel(@ApiParam(value = "resource id to update with new property", required = true) @PathParam("resourceId") final String resourceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return deleteAdditionalInformationLabelForComponent(NodeTypeEnum.Resource, resourceId, labelId, request, userId);

    }

    /**
     *
     * @param serviceId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    @DELETE
    @Path("/services/{serviceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Create Additional Information Label and Value", httpMethod = "DELETE", notes = "Returns deleted Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "Additional information deleted"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response deleteServiceAdditionalInformationLabel(@ApiParam(value = "service id to update with new property", required = true) @PathParam("serviceId") final String serviceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return deleteAdditionalInformationLabelForComponent(NodeTypeEnum.Service, serviceId, labelId, request, userId);

    }

    /**
     *
     * @param resourceId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    @GET
    @Path("/resources/{resourceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Get Additional Information by id", httpMethod = "GET", notes = "Returns Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "fetched additional information"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response getResourceAdditionalInformationLabel(@ApiParam(value = "resource id to update with new property", required = true) @PathParam("resourceId") final String resourceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return getAdditionalInformationLabelForComponent(NodeTypeEnum.Resource, resourceId, labelId, request, userId);

    }

    /**
     *
     * @param serviceId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    @GET
    @Path("/services/{serviceId}/additionalinfo/{labelId}")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Get Additional Information by id", httpMethod = "GET", notes = "Returns Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "fetched additional information"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response getServiceAdditionalInformationLabel(@ApiParam(value = "service id to update with new property", required = true) @PathParam("serviceId") final String serviceId,
            @ApiParam(value = "label id", required = true) @PathParam("labelId") final String labelId, @Context final HttpServletRequest request, @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return getAdditionalInformationLabelForComponent(NodeTypeEnum.Service, serviceId, labelId, request, userId);

    }

    /**
     *
     * @param resourceId
     * @param request
     * @param userId
     * @return
     */
    @GET
    @Path("/resources/{resourceId}/additionalinfo")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Get all Additional Information under resource", httpMethod = "GET", notes = "Returns Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "list of additional information"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response getAllResourceAdditionalInformationLabel(@ApiParam(value = "resource id to update with new property", required = true) @PathParam("resourceId") final String resourceId, @Context final HttpServletRequest request,
            @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return getAllAdditionalInformationLabelForComponent(NodeTypeEnum.Resource, resourceId, request, userId);

    }

    /**
     *
     * @param serviceId
     * @param request
     * @param userId
     * @return
     */
    @GET
    @Path("/services/{serviceId}/additionalinfo")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    @ApiOperation(value = "Get all Additional Information under service", httpMethod = "GET", notes = "Returns Additional Inforamtion property", response = Response.class)
    @ApiResponses(value = { @ApiResponse(code = 200, message = "list of additional information"), @ApiResponse(code = 403, message = "Restricted operation"), @ApiResponse(code = 400, message = "Invalid content / Missing content"),
            @ApiResponse(code = 409, message = "Additional information key already exist") })
    public Response getAllServiceAdditionalInformationLabel(@ApiParam(value = "service id to update with new property", required = true) @PathParam("serviceId") final String serviceId, @Context final HttpServletRequest request,
            @HeaderParam(value = Constants.USER_ID_HEADER) String userId) {

        return getAllAdditionalInformationLabelForComponent(NodeTypeEnum.Service, serviceId, request, userId);

    }

    /**
     *
     * Create additional information property under given resource/service
     *
     * @param nodeType
     * @param uniqueId
     * @param request
     * @param userId
     * @param data
     * @return
     */
    protected Response createAdditionalInformationLabelForComponent(NodeTypeEnum nodeType, String uniqueId, HttpServletRequest request, String userId, String data) {

        ServletContext context = request.getSession().getServletContext();

        String url = request.getMethod() + " " + request.getRequestURI();
        log.debug("Start handle request of {}", url);
        log.debug("modifier id is {}", userId);
        log.debug("data is {}", data);

        try {
            // convert json to AdditionalInfoParameterInfo
            AdditionalInfoParameterInfo additionalInfoParameterInfo = gson.fromJson(data, AdditionalInfoParameterInfo.class);

            // create the new property
            AdditionalInformationBusinessLogic businessLogic = getBL(context);

            Either<AdditionalInfoParameterInfo, ResponseFormat> either = businessLogic.createAdditionalInformation(nodeType, uniqueId, additionalInfoParameterInfo, null, userId);

            if (either.isRight()) {
                ResponseFormat responseFormat = either.right().value();
                log.info("Failed to create additional information {}. Reason - {}", additionalInfoParameterInfo, responseFormat);
                return buildErrorResponse(responseFormat);
            }

            AdditionalInfoParameterInfo createdAI = either.left().value();

            log.debug("Additional information {}={} created successfully with id {}", createdAI.getKey(), createdAI.getValue(), createdAI.getUniqueId());

            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.CREATED);
            return buildOkResponse(responseFormat, createdAI);

        } catch (Exception e) {
            log.debug("Create additional information failed with exception", e);
            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
            return buildErrorResponse(responseFormat);
        }

    }

    /**
     * Update additional information property by id under given resource/service
     *
     * @param nodeType
     * @param uniqueId
     * @param labelId
     * @param request
     * @param userId
     * @param data
     * @return
     */
    protected Response updateAdditionalInformationLabelForComponent(NodeTypeEnum nodeType, String uniqueId, String labelId, HttpServletRequest request, String userId, String data) {

        ServletContext context = request.getSession().getServletContext();

        String url = request.getMethod() + " " + request.getRequestURI();
        log.debug("Start handle request of {}", url);
        log.debug("modifier id is {}", userId);
        log.debug("data is {}", data);

        try {
            // convert json to AdditionalInfoParameterInfo
            AdditionalInfoParameterInfo additionalInfoParameterInfo = gson.fromJson(data, AdditionalInfoParameterInfo.class);

            // create the new property
            AdditionalInformationBusinessLogic businessLogic = getBL(context);

            additionalInfoParameterInfo.setUniqueId(labelId);

            Either<AdditionalInfoParameterInfo, ResponseFormat> either = businessLogic.updateAdditionalInformation(nodeType, uniqueId, additionalInfoParameterInfo, null, userId);

            if (either.isRight()) {
                ResponseFormat responseFormat = either.right().value();
                log.info("Failed to update additional information property. Reason - {}", responseFormat);
                return buildErrorResponse(responseFormat);
            }

            AdditionalInfoParameterInfo createdAI = either.left().value();

            log.debug("Additional information {}={} updated successfully with id {}", createdAI.getKey(), createdAI.getValue(), createdAI.getUniqueId());

            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
            return buildOkResponse(responseFormat, createdAI);

        } catch (Exception e) {
            BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Update Additional Information");
            log.debug("Update additional information failed with exception", e);
            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
            return buildErrorResponse(responseFormat);
        }

    }

    /**
     *
     * Delete an additional information property by id under given resource/service
     *
     * @param nodeType
     * @param uniqueId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    protected Response deleteAdditionalInformationLabelForComponent(NodeTypeEnum nodeType, String uniqueId, String labelId, HttpServletRequest request, String userId) {

        ServletContext context = request.getSession().getServletContext();

        String url = request.getMethod() + " " + request.getRequestURI();
        log.debug("Start handle request of {}", url);
        log.debug("modifier id is {}", userId);

        try {

            AdditionalInformationBusinessLogic businessLogic = getBL(context);

            AdditionalInfoParameterInfo additionalInfoParameterInfo = new AdditionalInfoParameterInfo();
            additionalInfoParameterInfo.setUniqueId(labelId);

            Either<AdditionalInfoParameterInfo, ResponseFormat> either = businessLogic.deleteAdditionalInformation(nodeType, uniqueId, additionalInfoParameterInfo, null, userId);

            if (either.isRight()) {
                ResponseFormat responseFormat = either.right().value();
                log.info("Failed to update additional information property. Reason - {}", responseFormat);
                return buildErrorResponse(responseFormat);
            }

            AdditionalInfoParameterInfo createdAI = either.left().value();

            log.debug("Additional information {}={} deleted successfully with id {}", createdAI.getKey(), createdAI.getValue(), createdAI.getUniqueId());

            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
            return buildOkResponse(responseFormat, createdAI);

        } catch (Exception e) {
            BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Delete Additional Information");
            log.debug("Delete additional information failed with exception", e);
            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
            return buildErrorResponse(responseFormat);
        }

    }

    /**
     * Get a specific additional information property by a given id under given resource/service
     *
     * @param nodeType
     * @param uniqueId
     * @param labelId
     * @param request
     * @param userId
     * @return
     */
    protected Response getAdditionalInformationLabelForComponent(NodeTypeEnum nodeType, String uniqueId, String labelId, HttpServletRequest request, String userId) {

        ServletContext context = request.getSession().getServletContext();

        String url = request.getMethod() + " " + request.getRequestURI();
        log.debug("Start handle request of {}", url);
        log.debug("modifier id is {}", userId);

        try {

            // create the new property
            AdditionalInformationBusinessLogic businessLogic = getBL(context);

            AdditionalInfoParameterInfo additionalInfoParameterInfo = new AdditionalInfoParameterInfo();
            additionalInfoParameterInfo.setUniqueId(labelId);

            Either<AdditionalInfoParameterInfo, ResponseFormat> either = businessLogic.getAdditionalInformation(nodeType, uniqueId, additionalInfoParameterInfo, null, userId);

            if (either.isRight()) {
                ResponseFormat responseFormat = either.right().value();
                log.info("Failed to update additional information property. Reason - {}", responseFormat);
                return buildErrorResponse(responseFormat);
            }

            AdditionalInfoParameterInfo createdAI = either.left().value();

            log.debug("Additional information {}={} fetched successfully with id {}", createdAI.getKey(), createdAI.getValue(), createdAI.getUniqueId());

            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
            return buildOkResponse(responseFormat, createdAI);

        } catch (Exception e) {
            BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Get Additional Information");

            log.debug("get additional information failed with exception", e);
            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
            return buildErrorResponse(responseFormat);
        }

    }

    /**
     * Get all additional information properties under given resource/service
     *
     * @param nodeType
     * @param uniqueId
     * @param request
     * @param userId
     * @return
     */
    protected Response getAllAdditionalInformationLabelForComponent(NodeTypeEnum nodeType, String uniqueId, HttpServletRequest request, String userId) {

        ServletContext context = request.getSession().getServletContext();

        String url = request.getMethod() + " " + request.getRequestURI();
        log.debug("Start handle request of {}", url);
        log.debug("modifier id is {}", userId);

        try {

            AdditionalInformationBusinessLogic businessLogic = getBL(context);

            Either<AdditionalInformationDefinition, ResponseFormat> either = businessLogic.getAllAdditionalInformation(nodeType, uniqueId, null, userId);
            if (either.isRight()) {
                ResponseFormat responseFormat = either.right().value();
                log.info("Failed to update additional information property. Reason - {}", responseFormat);
                return buildErrorResponse(responseFormat);
            }

            AdditionalInformationDefinition additionalInformationDefinition = either.left().value();

            log.debug("All Additional information retrieved for component {} is {}", uniqueId, additionalInformationDefinition);

            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.OK);
            return buildOkResponse(responseFormat, additionalInformationDefinition);

        } catch (Exception e) {
            BeEcompErrorManager.getInstance().logBeRestApiGeneralError("Get All Additional Information");
            log.debug("Get all addiotanl information properties failed with exception", e);
            ResponseFormat responseFormat = getComponentsUtils().getResponseFormat(ActionStatus.GENERAL_ERROR);
            return buildErrorResponse(responseFormat);
        }

    }

    private AdditionalInformationBusinessLogic getBL(ServletContext context) {
        WebAppContextWrapper webApplicationContextWrapper = (WebAppContextWrapper) context.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR);
        WebApplicationContext webApplicationContext = webApplicationContextWrapper.getWebAppContext(context);
        AdditionalInformationBusinessLogic bl = webApplicationContext.getBean(AdditionalInformationBusinessLogic.class);
        return bl;
    }

}