/*
 * Copyright 2014-2022 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.cloud.fn.consumer.xmpp;

import java.io.IOException;
import java.time.Duration;
import java.util.function.Consumer;

import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.filter.StanzaTypeFilter;
import org.jivesoftware.smack.packet.Stanza;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.jxmpp.stringprep.XmppStringprepException;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.fn.test.support.xmpp.XmppTestContainerSupport;
import org.springframework.context.annotation.Import;
import org.springframework.integration.xmpp.XmppHeaders;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.MessageBuilder;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.DynamicPropertyRegistry;
import org.springframework.test.context.DynamicPropertySource;

import static org.assertj.core.api.Assertions.assertThat;
import static org.awaitility.Awaitility.await;
import static org.springframework.cloud.fn.test.support.xmpp.XmppTestContainerSupport.JOHN_USER;
import static org.springframework.cloud.fn.test.support.xmpp.XmppTestContainerSupport.SERVICE_NAME;
import static org.springframework.cloud.fn.test.support.xmpp.XmppTestContainerSupport.USER_PW;

/**
 * @author Daniel Frey
 * @author Chris Bono
 */
@SpringBootTest(
		properties = {
				"xmpp.factory.user=" + JOHN_USER,
				"xmpp.factory.password=" + USER_PW,
				"xmpp.factory.service-name=" + SERVICE_NAME,
				"xmpp.factory.security-mode=disabled"
		}
)
@DirtiesContext
public class XmppConsumerConfigurationTests implements XmppTestContainerSupport {

	@DynamicPropertySource
	static void registerConfigurationProperties(DynamicPropertyRegistry registry) {
		registry.add("xmpp.factory.host", () -> XmppTestContainerSupport.getXmppHost());
		registry.add("xmpp.factory.port", () -> XmppTestContainerSupport.getXmppMappedPort());
	}

	@Autowired
	private Consumer<Message<?>> xmppConsumer;

	// A client connection is needed to receive the message from the xmpp server
	//   to verify it was received successfully
	private XMPPTCPConnection clientConnection;

	@BeforeEach
	void setup() throws IOException, SmackException, XMPPException, InterruptedException {

		var builder = XMPPTCPConnectionConfiguration.builder();
		builder.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
		builder.setHost(XmppTestContainerSupport.getXmppHost());
		builder.setPort(XmppTestContainerSupport.getXmppMappedPort());
		builder.setResource(SERVICE_NAME);
		builder.setUsernameAndPassword(JANE_USER, USER_PW)
				.setXmppDomain(SERVICE_NAME);
		this.clientConnection = new XMPPTCPConnection(builder.build());
		this.clientConnection.connect();
		this.clientConnection.login();

	}

	@AfterEach
	void teardown() {
		this.clientConnection.instantShutdown();
	}

	@Test
	void messageHandlerConfiguration() {
		var collector
				= this.clientConnection.createStanzaCollector(StanzaTypeFilter.MESSAGE);

		var testMessage =
				MessageBuilder.withPayload("test")
						.setHeader(XmppHeaders.TO, JANE_USER + "@" + SERVICE_NAME)
						.build();

		await().atMost(Duration.ofSeconds(20)).pollDelay(Duration.ofMillis(100))
				.untilAsserted(() -> {
					xmppConsumer.accept(testMessage);
					Stanza stanza = collector.nextResult();
					assertStanza(stanza);
				});
	}

	@Test
	void xmppMessageHandlerConfiguration() throws XmppStringprepException {
		var collector
				= this.clientConnection.createStanzaCollector(StanzaTypeFilter.MESSAGE);

		var testMessage =
				MessageBuilder.withPayload(org.jivesoftware.smack.packet.MessageBuilder.buildMessage().addBody("en_us", "test").to(JANE_USER + "@" + SERVICE_NAME).build())
						.build();

		await().atMost(Duration.ofSeconds(20)).pollDelay(Duration.ofMillis(100))
				.untilAsserted(() -> {
					xmppConsumer.accept(testMessage);
					Stanza stanza = collector.nextResult();
					assertStanza(stanza);
				});
	}

	private void assertStanza(Stanza stanza) {
		assertTo(stanza);
		assertFrom(stanza);
	}

	private void assertTo(Stanza stanza) {
		assertThat(stanza.getTo().asBareJid().asUnescapedString()).isEqualTo(JANE_USER + "@" + SERVICE_NAME);
	}

	private void assertFrom(Stanza stanza) {
		assertThat(stanza.getFrom().asBareJid().asUnescapedString()).isEqualTo(JOHN_USER + "@" + SERVICE_NAME);
	}

	@SpringBootConfiguration
	@EnableAutoConfiguration
	@Import(XmppConsumerConfiguration.class)
	static class XmppConsumerTestApplication { }

}
