/**
 * 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.karaf.commands;

import java.util.LinkedList;
import java.util.List;

import org.apache.camel.CamelContext;
import org.apache.camel.ServiceStatus;
import org.apache.camel.model.RouteDefinition;
import org.apache.felix.gogo.commands.Argument;
import org.apache.felix.gogo.commands.Command;
import org.apache.karaf.shell.console.OsgiCommandSupport;

/**
 * Command to list all Camel routes.
 */
@Command(scope = "camel", name = "route-list", description = "List Camel routes.")
public class RouteList extends OsgiCommandSupport {

    protected static final String HEADER_FORMAT = "%-20s %-20s %-20s";
    protected static final String OUTPUT_FORMAT = "[%-18s] [%-18s] [%-18s]";
    protected static final String UNKNOWN = "Unknown";
    protected static final String ROUTE_ID = "Route Id";
    protected static final String CONTEXT_ID = "Context Name";
    protected static final String STATUS = "Status";

    @Argument(index = 0, name = "name", description = "The Camel context name where to look for the route", required = false, multiValued = false)
    String name;

    private CamelController camelController;

    public void setCamelController(CamelController camelController) {
        this.camelController = camelController;
    }

    protected Object doExecute() throws Exception {
        System.out.println(String.format(HEADER_FORMAT, ROUTE_ID, CONTEXT_ID, STATUS));

        List<CamelContext> camelContexts = new LinkedList<CamelContext>();
        if (name != null && camelController.getCamelContext(name) != null) {
            camelContexts.add(camelController.getCamelContext(name));
        } else {
            camelContexts = camelController.getCamelContexts();
        }

        for (CamelContext camelContext : camelContexts) {
            List<RouteDefinition> routeDefinitions = camelController.getRouteDefinitions(camelContext.getName());
            if (routeDefinitions != null && !routeDefinitions.isEmpty()) {
                for (RouteDefinition routeDefinition : routeDefinitions) {
                    String contextName = camelContext.getName();
                    ServiceStatus status = camelContext.getRouteStatus(routeDefinition.getId());
                    System.out.println(String.format(OUTPUT_FORMAT, routeDefinition.getId(), contextName, status != null ? status.name() : UNKNOWN));
                }
            }
        }

        return null;
    }

}
