/*
 * 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 org.apache.camel.component.digitalocean.producer;

import com.myjeeva.digitalocean.exception.DigitalOceanException;
import com.myjeeva.digitalocean.exception.RequestUnsuccessfulException;
import com.myjeeva.digitalocean.pojo.Delete;
import com.myjeeva.digitalocean.pojo.Snapshot;
import com.myjeeva.digitalocean.pojo.Snapshots;
import org.apache.camel.Exchange;
import org.apache.camel.component.digitalocean.DigitalOceanConfiguration;
import org.apache.camel.component.digitalocean.DigitalOceanEndpoint;
import org.apache.camel.component.digitalocean.constants.DigitalOceanHeaders;
import org.apache.camel.component.digitalocean.constants.DigitalOceanSnapshotTypes;
import org.apache.camel.util.ObjectHelper;

/**
 * The DigitalOcean producer for Snapshots API.
 */
public class DigitalOceanSnapshotsProducer extends DigitalOceanProducer {

    public DigitalOceanSnapshotsProducer(DigitalOceanEndpoint endpoint, DigitalOceanConfiguration configuration) {
        super(endpoint, configuration);
    }

    @Override
    public void process(Exchange exchange) throws Exception {

        switch (determineOperation(exchange)) {

            case list:
                getSnapshots(exchange);
                break;
            case get:
                getSnapshot(exchange);
                break;
            case delete:
                deleteSnapshot(exchange);
                break;

            default:
                throw new IllegalArgumentException("Unsupported operation");
        }

    }

    private void getSnapshots(Exchange exchange) throws RequestUnsuccessfulException, DigitalOceanException {
        DigitalOceanSnapshotTypes type = exchange.getIn().getHeader(DigitalOceanHeaders.TYPE, DigitalOceanSnapshotTypes.class);
        Snapshots snapshots;

        if (ObjectHelper.isNotEmpty(type)) {
            if (type == DigitalOceanSnapshotTypes.droplet) {
                snapshots = getEndpoint().getDigitalOceanClient().getAllDropletSnapshots(configuration.getPage(),
                        configuration.getPerPage());
            } else {
                snapshots = getEndpoint().getDigitalOceanClient().getAllVolumeSnapshots(configuration.getPage(),
                        configuration.getPerPage());
            }
        } else {
            snapshots = getEndpoint().getDigitalOceanClient().getAvailableSnapshots(configuration.getPage(),
                    configuration.getPerPage());
        }

        LOG.trace("All Snapshots : page {} / {} per page [{}] ", configuration.getPage(), configuration.getPerPage(),
                snapshots.getSnapshots());
        exchange.getMessage().setBody(snapshots.getSnapshots());
    }

    private void getSnapshot(Exchange exchange) throws RequestUnsuccessfulException, DigitalOceanException {
        String snapshotId = exchange.getIn().getHeader(DigitalOceanHeaders.ID, String.class);

        if (ObjectHelper.isEmpty(snapshotId)) {
            throw new IllegalArgumentException(DigitalOceanHeaders.ID + " must be specified");
        }

        Snapshot snapshot = getEndpoint().getDigitalOceanClient().getSnaphotInfo(snapshotId);
        LOG.trace("Snapshot [{}] ", snapshot);
        exchange.getMessage().setBody(snapshot);

    }

    private void deleteSnapshot(Exchange exchange) throws RequestUnsuccessfulException, DigitalOceanException {
        String snapshotId = exchange.getIn().getHeader(DigitalOceanHeaders.ID, String.class);

        if (ObjectHelper.isEmpty(snapshotId)) {
            throw new IllegalArgumentException(DigitalOceanHeaders.ID + " must be specified");
        }

        Delete delete = getEndpoint().getDigitalOceanClient().deleteSnapshot(snapshotId);
        LOG.trace("Delete Snapshot [{}] ", delete);
        exchange.getMessage().setBody(delete);

    }

}
