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// 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
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// specific language governing permissions and limitations
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package org.apache.cloudstack.api.command.admin.cluster;

import java.util.ArrayList;
import java.util.List;

import org.apache.cloudstack.api.APICommand;
import org.apache.cloudstack.api.ApiConstants;
import org.apache.cloudstack.api.BaseListCmd;
import org.apache.cloudstack.api.Parameter;
import org.apache.cloudstack.api.response.ClusterResponse;
import org.apache.cloudstack.api.response.ListResponse;
import org.apache.cloudstack.api.response.PodResponse;
import org.apache.cloudstack.api.response.ZoneResponse;
import org.apache.commons.lang3.StringUtils;

import com.cloud.cpu.CPU;
import com.cloud.org.Cluster;
import com.cloud.utils.Pair;

@APICommand(name = "listClusters", description = "Lists clusters.", responseObject = ClusterResponse.class,
        requestHasSensitiveInfo = false, responseHasSensitiveInfo = false)
public class ListClustersCmd extends BaseListCmd {


    /////////////////////////////////////////////////////
    //////////////// API parameters /////////////////////
    /////////////////////////////////////////////////////

    @Parameter(name = ApiConstants.ID, type = CommandType.UUID, entityType = ClusterResponse.class, description = "Lists clusters by the cluster ID")
    private Long id;

    @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, description = "Lists clusters by the cluster name")
    private String clusterName;

    @Parameter(name = ApiConstants.POD_ID, type = CommandType.UUID, entityType = PodResponse.class, description = "Lists clusters by Pod ID")
    private Long podId;

    @Parameter(name = ApiConstants.ZONE_ID, type = CommandType.UUID, entityType = ZoneResponse.class, description = "Lists clusters by Zone ID")
    private Long zoneId;

    @Parameter(name = ApiConstants.HYPERVISOR, type = CommandType.STRING, description = "Lists clusters by hypervisor type")
    private String hypervisorType;

    @Parameter(name = ApiConstants.CLUSTER_TYPE, type = CommandType.STRING, description = "Lists clusters by cluster type")
    private String clusterType;

    @Parameter(name = ApiConstants.ALLOCATION_STATE, type = CommandType.STRING, description = "Lists clusters by allocation state")
    private String allocationState;

    @Parameter(name = ApiConstants.MANAGED_STATE, type = CommandType.STRING, description = "Whether this cluster is managed by cloudstack")
    private String managedState;

    @Parameter(name = ApiConstants.SHOW_CAPACITIES, type = CommandType.BOOLEAN, description = "Flag to display the capacity of the clusters")
    private Boolean showCapacities;

    @Parameter(name = ApiConstants.ARCH, type = CommandType.STRING,
            description = "CPU arch of the clusters",
            since = "4.20.1")
    private String arch;

    /////////////////////////////////////////////////////
    /////////////////// Accessors ///////////////////////
    /////////////////////////////////////////////////////

    public Long getId() {
        return id;
    }

    public String getClusterName() {
        return clusterName;
    }

    public Long getPodId() {
        return podId;
    }

    public Long getZoneId() {
        return zoneId;
    }

    public String getHypervisorType() {
        return hypervisorType;
    }

    public String getClusterType() {
        return clusterType;
    }

    public String getAllocationState() {
        return allocationState;
    }

    public String getManagedstate() {
        return managedState;
    }

    public void setManagedstate(String managedstate) {
        this.managedState = managedstate;
    }

    public Boolean getShowCapacities() {
        return showCapacities;
    }

    public CPU.CPUArch getArch() {
        return StringUtils.isBlank(arch) ? null : CPU.CPUArch.fromType(arch);
    }

    /////////////////////////////////////////////////////
    /////////////// API Implementation///////////////////
    /////////////////////////////////////////////////////

    protected Pair<List<ClusterResponse>, Integer> getClusterResponses() {
        Pair<List<? extends Cluster>, Integer> result = _mgr.searchForClusters(this);
        List<ClusterResponse> clusterResponses = new ArrayList<>();
        for (Cluster cluster : result.first()) {
            ClusterResponse clusterResponse = _responseGenerator.createClusterResponse(cluster, showCapacities);
            clusterResponse.setObjectName("cluster");
            clusterResponses.add(clusterResponse);
        }
        return new Pair<>(clusterResponses, result.second());
    }

    @Override
    public void execute() {
        Pair<List<ClusterResponse>, Integer> clusterResponses = getClusterResponses();
        ListResponse<ClusterResponse> response = new ListResponse<>();
        response.setResponses(clusterResponses.first(), clusterResponses.second());
        response.setResponseName(getCommandName());
        this.setResponseObject(response);
    }
}
