/*
 * 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.component.iec60870;

import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;

import org.apache.camel.EndpointInject;
import org.apache.camel.Produce;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.RoutesBuilder;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.AssertionClause;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.test.AvailablePortFinder;
import org.apache.camel.test.junit5.CamelTestSupport;
import org.eclipse.neoscada.protocol.iec60870.asdu.types.Value;
import org.eclipse.neoscada.protocol.iec60870.server.data.model.WriteModel.Request;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class ConnectionTest extends CamelTestSupport {

    private static final String DIRECT_SEND_S_1 = "direct:sendServer1";

    private static final String DIRECT_SEND_C_1 = "direct:sendClient1";

    private static final String MOCK_CLIENT_1 = "mock:testClient1";

    private static final String MOCK_CLIENT_2 = "mock:testClient2";

    private static final String MOCK_SERVER_1 = "mock:testServer1";

    @Produce(DIRECT_SEND_S_1)
    protected ProducerTemplate producerServer1;

    @Produce(DIRECT_SEND_C_1)
    protected ProducerTemplate producerClient1;

    @EndpointInject(MOCK_CLIENT_1)
    protected MockEndpoint testClient1Endpoint;

    @EndpointInject(MOCK_CLIENT_2)
    protected MockEndpoint testClient2Endpoint;

    @EndpointInject(MOCK_SERVER_1)
    protected MockEndpoint testServer1Endpoint;

    @Override
    protected RoutesBuilder createRouteBuilder() {

        final int port = AvailablePortFinder.getNextAvailable();

        return new RouteBuilder() {
            @Override
            public void configure() {
                from(DIRECT_SEND_S_1).toF("iec60870-server:localhost:%s/00-00-00-00-01", port);
                fromF("iec60870-client:localhost:%s/00-00-00-00-01", port).to(MOCK_CLIENT_1);
                fromF("iec60870-client:localhost:%s/00-00-00-00-02", port).to(MOCK_CLIENT_2);

                from(DIRECT_SEND_C_1).toF("iec60870-client:localhost:%s/00-00-00-01-01", port);
                fromF("iec60870-server:localhost:%s/00-00-00-01-01", port).to(MOCK_SERVER_1);
            }
        };
    }

    @Test
    public void testFloat1() throws InterruptedException {
        this.producerServer1.sendBody(1.23f);

        // expect - count

        this.testClient1Endpoint.setExpectedCount(1);
        this.testClient2Endpoint.setExpectedCount(0);

        // expect

        expectValue(testClient1Endpoint.message(0), assertGoodValue(1.23f));

        // assert

        assertMockEndpointsSatisfied(1_000, TimeUnit.MILLISECONDS);
    }

    @Test
    public void testBoolean1() throws InterruptedException {
        this.producerServer1.sendBody(true);

        // expect - count

        this.testClient1Endpoint.setExpectedCount(1);
        this.testClient2Endpoint.setExpectedCount(0);

        // expect

        expectValue(testClient1Endpoint.message(0), assertGoodValue(true));

        // assert

        assertMockEndpointsSatisfied(1_000, TimeUnit.MILLISECONDS);
    }

    @Test
    public void testCommand1() throws InterruptedException {

        Thread.sleep(1_000);

        this.producerClient1.sendBody(true);

        // expect - count

        this.testServer1Endpoint.setExpectedCount(1);

        // expect

        expectRequest(testServer1Endpoint.message(0), expectRequest(true));

        // assert

        assertMockEndpointsSatisfied(2_000, TimeUnit.MILLISECONDS);
        System.out.println(testServer1Endpoint.getExchanges().get(0).getIn().getBody());

    }

    private <T> void expectValue(AssertionClause message, Consumer<Value<?>> consumer) {
        message.predicate(exchange -> {
            final Value<?> body = exchange.getIn().getBody(Value.class);
            consumer.accept(body);
            return true;
        });
    }

    private <T> void expectRequest(AssertionClause message, Consumer<Request<?>> consumer) {
        message.predicate(exchange -> {
            final Request<?> body = exchange.getIn().getBody(Request.class);
            consumer.accept(body);
            return true;
        });
    }

    public static Consumer<Value<?>> assertGoodValue(final Object expectedValue) {
        return value -> {
            assertNotNull(value);
            assertEquals(expectedValue, value.getValue());
            assertTrue(value.getQualityInformation().isValid());
            assertTrue(value.getQualityInformation().isTopical());
            assertFalse(value.getQualityInformation().isBlocked());
            assertFalse(value.getQualityInformation().isSubstituted());
        };
    }

    private Consumer<Request<?>> expectRequest(final Object expectedValue) {
        return value -> {
            assertNotNull(value);
            assertEquals(expectedValue, value.getValue());
        };
    }

}
