/*
 * Copyright 2015-present Open Networking Foundation
 *
 * Licensed 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.onosproject.dhcp.cli;

import org.apache.karaf.shell.commands.Command;
import org.onosproject.cli.AbstractShellCommand;
import org.onosproject.dhcp.DhcpService;
import org.onosproject.dhcp.IpAssignment;
import org.onosproject.net.HostId;

import java.util.Map;

/**
 * Lists all the MacAddress to IP Address mappings held by the DHCP Server.
 */
@Command(scope = "onos", name = "dhcp-list",
        description = "Lists all the MAC to IP mappings held by the DHCP Server")
public class DhcpListAllMappings extends AbstractShellCommand {

    private static final String DHCP_MAPPING_FORMAT = "MAC ID: %s -> IP ASSIGNED %s";
    @Override
    protected void execute() {

        DhcpService dhcpService = AbstractShellCommand.get(DhcpService.class);
        Map<HostId, IpAssignment> allocationMap = dhcpService.listMapping();

        for (Map.Entry<HostId, IpAssignment> entry : allocationMap.entrySet()) {
            print(DHCP_MAPPING_FORMAT, entry.getKey().toString(), entry.getValue().ipAddress().toString());
        }
    }
}