/*
 * 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.example.cafe;

import java.util.concurrent.atomic.AtomicInteger;

import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.builder.endpoint.EndpointRouteBuilder;
import org.apache.camel.example.cafe.stuff.Barista;
import org.apache.camel.example.cafe.stuff.CafeAggregationStrategy;
import org.apache.camel.example.cafe.stuff.DrinkRouter;
import org.apache.camel.example.cafe.stuff.OrderSplitter;
import org.apache.camel.example.cafe.stuff.Waiter;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.spi.Registry;

/**
 * A simple example router from Cafe Demo.
 *
 * Notice how this RouteBuilder extends {@link EndpointRouteBuilder} which provides the support
 * for Camel Endpoint DSL.
 */
public class CafeRouteBuilder extends EndpointRouteBuilder {

    protected AtomicInteger orderId = new AtomicInteger();
    
    public static void main(String[] args) throws Exception {
        CafeRouteBuilder builder = new CafeRouteBuilder();
        builder.runCafeRouteDemo();
    }
    
    protected void bindBeans(Registry registry) throws Exception {
        registry.bind("drinkRouter", new DrinkRouter());
        registry.bind("orderSplitter", new OrderSplitter());
        registry.bind("barista", new Barista());
        registry.bind("waiter", new Waiter());
        registry.bind("aggregatorStrategy", new CafeAggregationStrategy());
    }
    
    public void runCafeRouteDemo() throws Exception {
        // create CamelContext
        CamelContext camelContext = new DefaultCamelContext();

        // bind beans to the Camel
        bindBeans(camelContext.getRegistry());

        // add the routes
        camelContext.addRoutes(this);

        // add additional routes using inlined RouteBuilder
        // where we can access the Camel Endpoint DSL from this class
        RouteBuilder.addRoutes(camelContext, rb ->
                rb.from(timer("myTimer").fixedRate(true).period(500).advanced().synchronous(false))
                        .delay(simple("${random(250,1000)}"))
                        .process(this::newOrder)
                        .to(direct("cafe")));

        // start Camel
        camelContext.start();

        // just run for 10 seconds and stop
        System.out.println("Running for 10 seconds and then stopping");
        Thread.sleep(10000);

        // stop and shutdown Camel
        camelContext.stop();
    }

    protected void newOrder(Exchange exchange) {
        Order order = new Order(orderId.incrementAndGet());
        order.addItem(DrinkType.ESPRESSO, 2, true);
        order.addItem(DrinkType.CAPPUCCINO, 4, false);
        order.addItem(DrinkType.LATTE, 4, false);
        order.addItem(DrinkType.MOCHA, 2, false);
        exchange.getIn().setBody(order);
    }

    //START SNIPPET: RouteConfig
    public void configure() {
        
        from(direct("cafe"))
            .split().method("orderSplitter").to(direct("drink"));
        
        from(direct("drink")).recipientList().method("drinkRouter");
        
        from(seda("coldDrinks").concurrentConsumers(2)).to(bean("barista").method("prepareColdDrink")).to(direct("deliveries"));
        from(seda("hotDrinks").concurrentConsumers(3)).to(bean("barista").method("prepareHotDrink")).to(direct("deliveries"));
        
        from(direct("deliveries"))
            .aggregate(new CafeAggregationStrategy()).method("waiter", "checkOrder").completionInterval(1000L)
            .to(bean("waiter").method("prepareDelivery"))
            .to(bean("waiter").method("deliverCafes"));

    }
    //END SNIPPET: RouteConfig

}
