/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.epam.datalab.backendapi.resources.callback;

import com.epam.datalab.backendapi.dao.EnvDAO;
import com.epam.datalab.backendapi.domain.RequestId;
import com.epam.datalab.backendapi.service.EnvironmentService;
import com.epam.datalab.dto.UserInstanceStatus;
import com.epam.datalab.dto.status.EnvStatusDTO;
import com.epam.datalab.exceptions.DatalabException;
import com.epam.datalab.rest.contracts.ApiCallbacks;
import com.google.inject.Inject;
import lombok.extern.slf4j.Slf4j;

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/infrastructure")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Slf4j
public class EnvironmentStatusCallback {

    private final EnvDAO envDAO;
    private final RequestId requestId;
    private final EnvironmentService environmentService;

    @Inject
    public EnvironmentStatusCallback(EnvDAO envDAO, RequestId requestId, EnvironmentService environmentService) {
        this.envDAO = envDAO;
        this.requestId = requestId;
        this.environmentService = environmentService;
    }

    /**
     * Updates the status of the resources for user.
     *
     * @param dto DTO info about the statuses of resources.
     * @return Always return code 200 (OK).
     */
    @POST
    @Path(ApiCallbacks.STATUS_URI)
    public Response status(EnvStatusDTO dto) {
        requestId.checkAndRemove(dto.getRequestId());
        log.info("Updating statuses of following resources {} ", dto.getResourceList());
        try {
            if (UserInstanceStatus.FAILED == UserInstanceStatus.of(dto.getStatus())) {
                log.warn("Request for the status of resources for user {} fails: {}", dto.getUser(), dto.getErrorMessage());
            } else {
                environmentService.updateEnvironmentStatuses(dto.getResourceList());
            }
        } catch (DatalabException e) {
            log.warn("Could not update status of resources for user {}: {}", dto.getUser(), e.getLocalizedMessage(), e);
        }
        return Response.ok().build();
    }
}