/*
 * 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.aws;

import com.epam.datalab.auth.UserInfo;
import com.epam.datalab.backendapi.core.FileHandlerCallback;
import com.epam.datalab.backendapi.core.commands.DockerAction;
import com.epam.datalab.backendapi.core.response.handlers.EdgeCallbackHandler;
import com.epam.datalab.backendapi.resources.base.EdgeService;
import com.epam.datalab.dto.ResourceSysBaseDTO;
import com.epam.datalab.dto.aws.edge.EdgeInfoAws;
import com.epam.datalab.dto.aws.keyload.UploadFileAws;
import com.epam.datalab.dto.base.keyload.UploadFileResult;
import com.epam.datalab.util.FileUtils;
import com.fasterxml.jackson.core.JsonProcessingException;
import io.dropwizard.auth.Auth;
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 java.io.IOException;

import static com.epam.datalab.rest.contracts.ApiCallbacks.EDGE;
import static com.epam.datalab.rest.contracts.ApiCallbacks.KEY_LOADER;
import static com.epam.datalab.rest.contracts.ApiCallbacks.STATUS_URI;

/**
 * Provides API to manage Edge node on AWS
 */
@Path("infrastructure/edge")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Slf4j
public class EdgeResourceAws extends EdgeService {

    public EdgeResourceAws() {
        log.info("{} is initialized", getClass().getSimpleName());
    }

    @POST
    @Path("/create")
    public String create(@Auth UserInfo ui, UploadFileAws dto) throws IOException {
        FileUtils.saveToFile(getKeyFilename(dto.getEdge().getEdgeUserName()), getKeyDirectory(), dto.getContent());
        return action(ui.getName(), dto.getEdge(), dto.getEdge().getCloudSettings().getIamUser(), KEY_LOADER,
                DockerAction.CREATE);
    }

    @POST
    @Path("/start")
    public String start(@Auth UserInfo ui, ResourceSysBaseDTO<?> dto) throws JsonProcessingException {
        return action(ui.getName(), dto, dto.getCloudSettings().getIamUser(), EDGE + STATUS_URI, DockerAction.START);
    }

    @POST
    @Path("/stop")
    public String stop(@Auth UserInfo ui, ResourceSysBaseDTO<?> dto) throws JsonProcessingException {
        return action(ui.getName(), dto, dto.getCloudSettings().getIamUser(), EDGE + STATUS_URI, DockerAction.STOP);
    }

    @POST
    @Path("/terminate")
    public String terminate(@Auth UserInfo ui, ResourceSysBaseDTO<?> dto) throws JsonProcessingException {
        return action(ui.getName(), dto, dto.getCloudSettings().getIamUser(), EDGE + STATUS_URI,
                DockerAction.TERMINATE);
    }

    @SuppressWarnings("unchecked")
    protected FileHandlerCallback getFileHandlerCallback(DockerAction action, String uuid, String user, String
            callbackURI) {
        return new EdgeCallbackHandler(selfService, action, uuid, user, callbackURI,
                EdgeInfoAws.class,
                UploadFileResult.class);
    }
}