// 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.cloudstack.api.command.user.vm;

import org.apache.log4j.Logger;

import org.apache.cloudstack.api.ApiConstants;
import org.apache.cloudstack.api.ApiErrorCode;
import org.apache.cloudstack.api.BaseAsyncCmd;
import org.apache.cloudstack.api.BaseCmd;
import org.apache.cloudstack.api.APICommand;
import org.apache.cloudstack.api.Parameter;
import org.apache.cloudstack.api.ServerApiException;
import org.apache.cloudstack.api.response.UserVmResponse;
import org.apache.cloudstack.api.response.DomainResponse;
import org.apache.cloudstack.api.response.ProjectResponse;
import com.cloud.async.AsyncJob;
import com.cloud.user.Account;
import com.cloud.user.UserContext;
import com.cloud.uservm.UserVm;
import com.cloud.event.EventTypes;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.ResourceUnavailableException;

@APICommand(name = "resetSSHKeyForVirtualMachine", responseObject = UserVmResponse.class, description = "Resets the SSH Key for virtual machine. " +
        "The virtual machine must be in a \"Stopped\" state. [async]")
public class ResetVMSSHKeyCmd extends BaseAsyncCmd {

    public static final Logger s_logger = Logger.getLogger(ResetVMSSHKeyCmd.class.getName());

    private static final String s_name = "resetSSHKeyforvirtualmachineresponse";

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

    @Parameter(name = ApiConstants.ID, type = CommandType.UUID, entityType = UserVmResponse.class, required = true, description = "The ID of the virtual machine")
    private Long id;

    @Parameter(name = ApiConstants.SSH_KEYPAIR, type = CommandType.STRING, required = true, description = "name of the ssh key pair used to login to the virtual machine")
    private String name;


    //Owner information
    @Parameter(name = ApiConstants.ACCOUNT, type = CommandType.STRING, description = "an optional account for the ssh key. Must be used with domainId.")
    private String accountName;

    @Parameter(name = ApiConstants.DOMAIN_ID, type = CommandType.UUID, entityType = DomainResponse.class, description = "an optional domainId for the virtual machine. If the account parameter is used, domainId must also be used.")
    private Long domainId;

    @Parameter(name = ApiConstants.PROJECT_ID, type = CommandType.UUID, entityType = ProjectResponse.class, description = "an optional project for the ssh key")
    private Long projectId;


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

    public String getName() {
        return name;
    }


    public Long getId() {
        return id;
    }

    public String getAccountName() {
        return accountName;
    }

    public Long getDomainId() {
        return domainId;
    }

    public Long getProjectId() {
        return projectId;
    }

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


    @Override
    public String getEventType() {
        return EventTypes.EVENT_VM_RESETSSHKEY;
    }

    @Override
    public String getEventDescription() {
        return "resetting SSHKey for vm: " + getId();
    }

    public AsyncJob.Type getInstanceType() {
        return AsyncJob.Type.VirtualMachine;
    }


    @Override
    public String getCommandName() {
        return s_name;
    }

    @Override
    public long getEntityOwnerId() {
        UserVm vm = _responseGenerator.findUserVmById(getId());
        if (vm != null) {
            return vm.getAccountId();
        }

        return Account.ACCOUNT_ID_SYSTEM; // no account info given, parent this command to SYSTEM so ERROR events are tracked
    }

    public Long getInstanceId() {
        return getId();
    }


    @Override
    public void execute() throws ResourceUnavailableException,
            InsufficientCapacityException {

        UserContext.current().setEventDetails("Vm Id: " + getId());
        UserVm result = _userVmService.resetVMSSHKey(this);

        if (result != null) {
            UserVmResponse response = _responseGenerator.createUserVmResponse("virtualmachine", result).get(0);
            response.setResponseName(getCommandName());
            this.setResponseObject(response);
        } else {
            throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to reset vm SSHKey");
        }
    }

}
