package com.commafeed.integration;

import java.io.IOException;
import java.net.URI;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;

import org.awaitility.Awaitility;
import org.glassfish.jersey.client.JerseyClientBuilder;
import org.glassfish.jersey.client.authentication.HttpAuthenticationFeature;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.commafeed.frontend.model.request.FeedModificationRequest;

import jakarta.websocket.ClientEndpointConfig;
import jakarta.websocket.CloseReason;
import jakarta.websocket.ContainerProvider;
import jakarta.websocket.DeploymentException;
import jakarta.websocket.Endpoint;
import jakarta.websocket.EndpointConfig;
import jakarta.websocket.Session;
import jakarta.ws.rs.client.Entity;
import lombok.extern.slf4j.Slf4j;

@Slf4j
class WebSocketIT extends BaseIT {

	@Override
	protected JerseyClientBuilder configureClientBuilder(JerseyClientBuilder base) {
		return base.register(HttpAuthenticationFeature.basic("admin", "admin"));
	}

	@Test
	void sessionClosedIfNotLoggedIn() throws DeploymentException, IOException {
		AtomicBoolean connected = new AtomicBoolean();
		AtomicReference<CloseReason> closeReasonRef = new AtomicReference<>();
		try (Session session = ContainerProvider.getWebSocketContainer().connectToServer(new Endpoint() {
			@Override
			public void onOpen(Session session, EndpointConfig config) {
				connected.set(true);
			}

			@Override
			public void onClose(Session session, CloseReason closeReason) {
				closeReasonRef.set(closeReason);
			}
		}, buildConfig("fake-session-id"), URI.create(getWebSocketUrl()))) {
			Awaitility.await().atMost(15, TimeUnit.SECONDS).untilTrue(connected);
			log.info("connected to {}", session.getRequestURI());

			Awaitility.await().atMost(15, TimeUnit.SECONDS).until(() -> closeReasonRef.get() != null);
			Assertions.assertEquals(CloseReason.CloseCodes.VIOLATED_POLICY, closeReasonRef.get().getCloseCode());
		}
	}

	@Test
	void subscribeAndGetsNotified() throws DeploymentException, IOException {
		String sessionId = login();

		AtomicBoolean connected = new AtomicBoolean();
		AtomicReference<String> messageRef = new AtomicReference<>();
		try (Session session = ContainerProvider.getWebSocketContainer().connectToServer(new Endpoint() {
			@Override
			public void onOpen(Session session, EndpointConfig config) {
				session.addMessageHandler(String.class, messageRef::set);
				connected.set(true);
			}
		}, buildConfig(sessionId), URI.create(getWebSocketUrl()))) {
			Awaitility.await().atMost(15, TimeUnit.SECONDS).untilTrue(connected);
			log.info("connected to {}", session.getRequestURI());

			Long subscriptionId = subscribe(getFeedUrl());

			Awaitility.await().atMost(15, TimeUnit.SECONDS).until(() -> messageRef.get() != null);
			Assertions.assertEquals("new-feed-entries:" + subscriptionId + ":2", messageRef.get());
		}
	}

	@Test
	void notNotifiedForFilteredEntries() throws DeploymentException, IOException {
		String sessionId = login();
		Long subscriptionId = subscribeAndWaitForEntries(getFeedUrl());

		FeedModificationRequest req = new FeedModificationRequest();
		req.setId(subscriptionId);
		req.setName("feed-name");
		req.setFilter("!title.contains('item 4')");
		getClient().target(getApiBaseUrl() + "feed/modify").request().post(Entity.json(req), Void.class);

		AtomicBoolean connected = new AtomicBoolean();
		AtomicReference<String> messageRef = new AtomicReference<>();
		try (Session session = ContainerProvider.getWebSocketContainer().connectToServer(new Endpoint() {
			@Override
			public void onOpen(Session session, EndpointConfig config) {
				session.addMessageHandler(String.class, messageRef::set);
				connected.set(true);
			}
		}, buildConfig(sessionId), URI.create(getWebSocketUrl()))) {
			Awaitility.await().atMost(15, TimeUnit.SECONDS).untilTrue(connected);
			log.info("connected to {}", session.getRequestURI());

			feedNowReturnsMoreEntries();
			forceRefreshAllFeeds();

			Awaitility.await().atMost(15, TimeUnit.SECONDS).until(() -> messageRef.get() != null);
			Assertions.assertEquals("new-feed-entries:" + subscriptionId + ":1", messageRef.get());
		}

	}

	@Test
	void pingPong() throws DeploymentException, IOException {
		String sessionId = login();

		AtomicBoolean connected = new AtomicBoolean();
		AtomicReference<String> messageRef = new AtomicReference<>();
		try (Session session = ContainerProvider.getWebSocketContainer().connectToServer(new Endpoint() {
			@Override
			public void onOpen(Session session, EndpointConfig config) {
				session.addMessageHandler(String.class, messageRef::set);
				connected.set(true);
			}
		}, buildConfig(sessionId), URI.create(getWebSocketUrl()))) {
			Awaitility.await().atMost(15, TimeUnit.SECONDS).untilTrue(connected);
			log.info("connected to {}", session.getRequestURI());

			session.getAsyncRemote().sendText("ping");

			Awaitility.await().atMost(15, TimeUnit.SECONDS).until(() -> messageRef.get() != null);
			Assertions.assertEquals("pong", messageRef.get());
		}
	}

	private ClientEndpointConfig buildConfig(String sessionId) {
		return ClientEndpointConfig.Builder.create().configurator(new ClientEndpointConfig.Configurator() {
			@Override
			public void beforeRequest(Map<String, List<String>> headers) {
				headers.put("Cookie", Collections.singletonList("JSESSIONID=" + sessionId));
			}
		}).build();
	}

}