/*
 * Copyright (c) 2016 - 2017 Ericsson India Global Services Pvt Ltd. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.genius.interfacemanager.shell;

import java.util.Formatter;

import org.apache.felix.service.command.CommandSession;
import org.opendaylight.genius.interfacemanager.globals.InterfaceInfo;
import org.opendaylight.genius.interfacemanager.globals.InterfaceInfo.InterfaceOpState;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfL2vlan;
import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.IfTunnel;
import org.opendaylight.yang.gen.v1.urn.opendaylight.genius.interfacemanager.rev160406.ParentRefs;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbTerminationPointAugmentation;

public class IfmCLIUtil {
    private static final String VLAN_OUTPUT_FORMAT_LINE1 = "%-55s";
    private static final String VLAN_OUTPUT_FORMAT = "%-24s %-20s %-15s %-24s";
    private static final String VXLAN_OUTPUT_FORMAT = "%-24s %-24s %-18s %-5s";
    private static final String VXLAN_OUTPUT_FORMAT_LINE1 = "%-49s %-45s";
    private static final String TP_OUTPUT_FORMAT_LINE1 = "%-49s %-45s";
    private static final String UNSET = "N/A";

    public static void showVlanHeaderOutput(CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT_LINE1, "Name"));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT, "", "Dpn", "PortName",
                "Vlan-Id"));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT, "Tag", "PortNo",
                "AdmState", "OpState"));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT, "Description", "", "", ""));
        sb.setLength(0);
        session.getConsole().println(fmt
            .format("--------------------------------------------------------------------------------"));
        sb.setLength(0);
        fmt.close();
    }

    public static void showVlanOutput(InterfaceInfo ifaceInfo, Interface iface, CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        IfL2vlan l2vlan = iface.getAugmentation(IfL2vlan.class);
        int vlanId = l2vlan != null ? l2vlan.getVlanId() != null ? l2vlan.getVlanId().getValue() : 0 : 0;
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT_LINE1,
                iface.getName()));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT,
                "", ifaceInfo == null ? UNSET : ifaceInfo.getDpId(),
                ifaceInfo == null ? UNSET : ifaceInfo.getPortName(), vlanId));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT,
                ifaceInfo == null ? UNSET : ifaceInfo.getInterfaceTag(),
                ifaceInfo == null ? UNSET  : ifaceInfo.getPortNo(),
                ifaceInfo == null ? UNSET : ifaceInfo.getAdminState(),
                ifaceInfo == null ? UNSET : ifaceInfo.getOpState()));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VLAN_OUTPUT_FORMAT + "\n",
                iface.getDescription(), "", "", ""));
        sb.setLength(0);
        fmt.close();
    }

    public static void showVxlanHeaderOutput(CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        session.getConsole().println(fmt
                .format(VXLAN_OUTPUT_FORMAT_LINE1, "Name", "Description"));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VXLAN_OUTPUT_FORMAT, "Local IP",
                "Remote IP", "Gateway IP", "AdmState"));
        sb.setLength(0);
        session.getConsole().println(fmt.format(VXLAN_OUTPUT_FORMAT, "OpState", "Parent",
                "Tag", ""));
        sb.setLength(0);
        session.getConsole().println(fmt
                .format("--------------------------------------------------------------------------------"));
        fmt.close();
    }

    public static void showVxlanOutput(Interface iface, InterfaceInfo interfaceInfo, CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        session.getConsole().println(fmt.format(VXLAN_OUTPUT_FORMAT_LINE1,
                iface.getName(),
                iface.getDescription() == null ? UNSET : iface.getDescription()));
        sb.setLength(0);
        IfTunnel ifTunnel = iface.getAugmentation(IfTunnel.class);
        session.getConsole().println(fmt.format(VXLAN_OUTPUT_FORMAT,
                new String(ifTunnel.getTunnelSource().getValue()),
                new String(ifTunnel.getTunnelDestination().getValue()),
                ifTunnel.getTunnelGateway() == null ? UNSET : new String(ifTunnel.getTunnelGateway().getValue()),
                interfaceInfo == null ? InterfaceInfo.InterfaceAdminState.DISABLED : interfaceInfo.getAdminState()));
        sb.setLength(0);
        ParentRefs parentRefs = iface.getAugmentation(ParentRefs.class);
        session.getConsole().println(fmt.format(VXLAN_OUTPUT_FORMAT + "\n",
                interfaceInfo == null ? InterfaceOpState.DOWN : interfaceInfo.getOpState(),
                String.format("%s/%s", parentRefs.getDatapathNodeIdentifier(),
                        iface.getName()),
                interfaceInfo == null ? UNSET : interfaceInfo.getInterfaceTag(), ""));
        fmt.close();
    }

    //TODO: Capture more information and cleaner display for TerminationPoint
    public static void showInterfaceToTpHeader(CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        session.getConsole().println(fmt
                .format(TP_OUTPUT_FORMAT_LINE1, "InterfaceName", "PortName"));
        sb.setLength(0);
        session.getConsole().println(fmt
                .format("--------------------------------------------------------------------------------"));
        fmt.close();
    }

    public static void showInterfaceToTpOutput(String ifName, OvsdbTerminationPointAugmentation port,
                    CommandSession session) {
        StringBuilder sb = new StringBuilder();
        Formatter fmt = new Formatter(sb);
        session.getConsole().println(fmt.format(TP_OUTPUT_FORMAT_LINE1, ifName, port.getName()));
        sb.setLength(0);
        fmt.close();
    }
}