/*
 * Copyright 2018, EnMasse authors.
 * License: Apache License 2.0 (see the file LICENSE or http://apache.org/licenses/LICENSE-2.0.html).
 */
package io.enmasse.systemtest.common.api;

import io.enmasse.address.model.*;
import io.enmasse.admin.model.v1.AddressPlan;
import io.enmasse.admin.model.v1.AddressSpacePlan;
import io.enmasse.admin.model.v1.ResourceAllowance;
import io.enmasse.admin.model.v1.ResourceRequest;
import io.enmasse.systemtest.*;
import io.enmasse.systemtest.AddressSpaceType;
import io.enmasse.systemtest.AddressType;
import io.enmasse.systemtest.amqp.AmqpClient;
import io.enmasse.systemtest.apiclients.AddressApiClient;
import io.enmasse.systemtest.apiclients.UserApiClient;
import io.enmasse.systemtest.bases.TestBase;
import io.enmasse.systemtest.cmdclients.KubeCMDClient;
import io.enmasse.systemtest.mqtt.MqttClientFactory;
import io.enmasse.systemtest.mqtt.MqttUtils;
import io.enmasse.systemtest.selenium.SeleniumManagement;
import io.enmasse.systemtest.selenium.SeleniumProvider;
import io.enmasse.systemtest.selenium.page.ConsoleWebPage;
import io.enmasse.systemtest.standard.AnycastTest;
import io.enmasse.systemtest.utils.*;
import io.enmasse.user.model.v1.UserAuthenticationType;
import io.vertx.core.json.JsonObject;
import org.eclipse.paho.client.mqttv3.IMqttClient;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import io.enmasse.systemtest.utils.AddressUtils;
import io.enmasse.systemtest.utils.PlanUtils;
import io.enmasse.user.model.v1.UserAuthenticationType;
import io.fabric8.kubernetes.client.KubernetesClientException;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;

import java.net.HttpURLConnection;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.function.Function;
import java.util.stream.Collectors;

import static io.enmasse.systemtest.TestTag.isolated;
import static java.net.HttpURLConnection.HTTP_BAD_REQUEST;
import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
import static org.hamcrest.CoreMatchers.*;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.jupiter.api.Assertions.*;

@Tag(isolated)
public class ApiServerTest extends TestBase {
    private static Logger log = CustomLogger.getLogger();
    private static final AdminResourcesManager adminManager = new AdminResourcesManager(kubernetes);

    @BeforeEach
    void setUp() {
        adminManager.setUp();
    }

    @AfterEach
    void tearDown() throws Exception {
        adminManager.tearDown();
    }

    @Test
    void testRestApiGetSchema() throws Exception {
        AddressPlan queuePlan = PlanUtils.createAddressPlanObject("test-schema-rest-api-addr-plan", AddressType.QUEUE,
                Arrays.asList(new ResourceRequest("broker", 0.6), new ResourceRequest("router", 0.0)));
        adminManager.createAddressPlan(queuePlan);

        //define and create address space plan
        List<ResourceAllowance> resources = Arrays.asList(
                new ResourceAllowance("broker", 2.0),
                new ResourceAllowance("router", 1.0),
                new ResourceAllowance("aggregate", 2.0));
        List<AddressPlan> addressPlans = Collections.singletonList(queuePlan);
        AddressSpacePlan addressSpacePlan = PlanUtils.createAddressSpacePlanObject("schema-rest-api-plan",
                "default", AddressSpaceType.STANDARD, resources, addressPlans);
        adminManager.createAddressSpacePlan(addressSpacePlan);

        Future<AddressSpaceSchemaList> data = getSchema();
        AddressSpaceSchemaList schemaData = data.get(20, TimeUnit.SECONDS);
        log.info("Check if schema object is not null");
        assertThat(schemaData.getItems().size(), not(0));

        log.info("Check if the 'standard' address space type is found");
        AddressSpaceSchema standardSchema = findTypeWithName(schemaData, "standard");
        assertNotNull(standardSchema);

        log.info("Check if the 'standard' address space has plans");
        assertThat(standardSchema.getSpec().getPlans(), notNullValue());

        log.info("Check if schema object contains new address space plan");
        assertTrue(standardSchema.getSpec().getPlans()
                .stream()
                .map(AddressSpacePlanDescription::getName)
                .collect(Collectors.toList()).contains("schema-rest-api-plan"));

        AddressTypeInformation addressType = standardSchema.getSpec().getAddressTypes().stream()
                .filter(type -> "queue".equals(type.getName()))
                .findFirst().orElse(null);
        assertNotNull(addressType);

        log.info("Check if schema contains new address plans");
        assertTrue(addressType.getPlans().stream()
                .filter(s -> s.getName().equals("test-schema-rest-api-addr-plan"))
                .map(AddressPlanDescription::getName)
                .collect(Collectors.toList())
                .contains("test-schema-rest-api-addr-plan"));
    }

    private AddressSpaceSchema findTypeWithName(AddressSpaceSchemaList schemaData, String name) {
        for (AddressSpaceSchema schema : schemaData.getItems()) {
            if (schema.getMetadata().getName().equals(name)) {
                return schema;
            }
        }
        return null;
    }
    
    @SuppressWarnings("deprecation")
    @Test
    void testRestApiAddressResourceParams() throws Exception {
        AddressSpace addressSpace = AddressSpaceUtils.createAddressSpaceObject("test-rest-api-addr-space", AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD);
        AddressSpace addressSpace2 = AddressSpaceUtils.createAddressSpaceObject("test-rest-api-addr-space2", AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD);
        createAddressSpaceList(addressSpace, addressSpace2);

        logWithSeparator(log, "Check if uuid is propagated");
        String uuid = "4bfe49c2-60b5-11e7-a5d0-507b9def37d9";
        Address dest1 = AddressUtils.createAddressObject("test-rest-api-queue", uuid, addressSpace.getMetadata().getName(),
                "test-rest-api-queue", AddressType.QUEUE.toString(), DestinationPlan.BROKERED_QUEUE);

        setAddresses(addressSpace, dest1);
        Address dest1AddressObj = getAddressesObjects(addressSpace, Optional.of(dest1.getMetadata().getName())).get(20, TimeUnit.SECONDS).get(0);
        assertEquals(uuid, dest1AddressObj.getMetadata().getUid(), "Address uuid is not equal");

        logWithSeparator(log, "Check if name is optional");
        Address dest2 = AddressUtils.createAddressObject(null, null, addressSpace.getMetadata().getName(),
                "test-rest-api-queue2", AddressType.QUEUE.toString(), DestinationPlan.BROKERED_QUEUE);
        setAddresses(addressSpace, dest2);

        HashMap<String, String> queryParams = new HashMap<>();
        queryParams.put("address", dest2.getSpec().getAddress());
        Future<List<Address>> addressesObjects = getAddressesObjects(addressSpace, Optional.empty(), Optional.of(queryParams));
        Address returnedAddress = addressesObjects.get(30, TimeUnit.SECONDS).get(0);
        log.info("Got address: {}", returnedAddress.getMetadata().getName());
        assertTrue(returnedAddress.getMetadata().getName().contains(String.format("%s.%s", addressSpace.getMetadata().getName(), dest2.getSpec().getAddress())),
                "Address name is wrongly generated");

        logWithSeparator(log, "Check if addressSpace is optional");
        Address dest3 = AddressUtils.createAddressObject(null, null, null,
                "test-rest-api-queue3", AddressType.QUEUE.toString(), DestinationPlan.BROKERED_QUEUE);
        deleteAddresses(addressSpace);
        setAddresses(addressSpace, dest3);

        Address dest3AddressObj = getAddressesObjects(addressSpace, Optional.empty()).get(20, TimeUnit.SECONDS).get(0);
        assertEquals(addressSpace.getMetadata().getName(), dest3AddressObj.getSpec().getAddressSpace(), "Addressspace name is empty");

        Address destWithoutAddress = AddressUtils.createQueueAddressObject(null, DestinationPlan.BROKERED_QUEUE);
        Throwable exception = assertThrows(ExecutionException.class, () -> setAddresses(addressSpace, HttpURLConnection.HTTP_BAD_REQUEST, destWithoutAddress));
        JsonObject serverResponse = new JsonObject(exception.getCause().getMessage());
        assertEquals("spec.address: must not be null", serverResponse.getString("message"),
                "Incorrect response from server on missing address!");

        Address destWithoutType = AddressUtils.createAddressObject("not-created-address", null, DestinationPlan.BROKERED_QUEUE);
        exception = assertThrows(ExecutionException.class, () -> setAddresses(addressSpace, HttpURLConnection.HTTP_BAD_REQUEST, destWithoutType));
        serverResponse = new JsonObject(exception.getCause().getMessage());
        assertEquals("spec.type: must not be null", serverResponse.getString("message"),
                "Incorrect response from server on missing type!");

        Address destWithoutPlan = AddressUtils.createQueueAddressObject("not-created-queue", null);
        exception = assertThrows(ExecutionException.class, () -> setAddresses(addressSpace, HttpURLConnection.HTTP_BAD_REQUEST, destWithoutPlan));

        serverResponse = new JsonObject(exception.getCause().getMessage());
        assertEquals("spec.plan: must not be null", serverResponse.getString("message"),
                "Incorrect response from server on missing plan!");

        logWithSeparator(log, "Removing all address spaces");

        deleteAllAddressSpaces();

    }

    private static <T> Set<String> toStrings(final Collection<T> items, final Function<T, String> converter) {
        Objects.requireNonNull(converter);

        if (items == null) {
            return null;
        }

        return items.stream().map(converter).collect(Collectors.toSet());
    }

    @Test
    void testCreateAddressResource() throws Exception {
        AddressSpace addrSpace = AddressSpaceUtils.createAddressSpaceObject("create-address-resource-with-a-very-long-name", AddressSpaceType.STANDARD, AddressSpacePlans.STANDARD_UNLIMITED);
        createAddressSpace(addrSpace);

        final Set<String> names = new LinkedHashSet<>();

        Address anycast = AddressUtils.createAddressObject("addr1", null, addrSpace.getMetadata().getName(), "addr_1", AddressType.ANYCAST.toString(), DestinationPlan.STANDARD_SMALL_ANYCAST);
        names.add(String.format("%s.%s", addrSpace.getMetadata().getName(), anycast.getMetadata().getName()));
        addressApiClient.createAddress(anycast);
        List<Address> addresses = getAddressesObjects(addrSpace, Optional.empty()).get(30, TimeUnit.SECONDS);
        assertThat(addresses.size(), is(1));
        assertThat(toStrings(addresses, address -> address.getMetadata().getName()), is(names));

        Address multicast = AddressUtils.createAddressObject("addr2", null, addrSpace.getMetadata().getName(), "addr_2", AddressType.MULTICAST.toString(), DestinationPlan.STANDARD_SMALL_MULTICAST);
        names.add(String.format("%s.%s", addrSpace.getMetadata().getName(), multicast.getMetadata().getName()));
        addressApiClient.createAddress(multicast);
        addresses = getAddressesObjects(addrSpace, Optional.empty()).get(30, TimeUnit.SECONDS);
        assertThat(addresses.size(), is(2));
        assertThat(toStrings(addresses, address -> address.getMetadata().getName()), is(names));

        String uuid = UUID.randomUUID().toString();
        Address longname = AddressUtils.createAddressObject(addrSpace.getMetadata().getName() + ".myaddressnameisalsoverylonginfact." + uuid, null, addrSpace.getMetadata().getName(), "my_addr_name_is_also_very1long", AddressType.QUEUE.toString(), DestinationPlan.STANDARD_LARGE_QUEUE);
        names.add(longname.getMetadata().getName());
        addressApiClient.createAddress(longname);
        addresses = getAddressesObjects(addrSpace, Optional.empty()).get(30, TimeUnit.SECONDS);
        assertThat(addresses.size(), is(3));
        assertThat(toStrings(addresses, address -> address.getMetadata().getName()), is(names));

        // ensure that getting all addresses (non-namespaces) returns the same result

        Set<String> allNames = AddressUtils.getAllAddressesObjects(addressApiClient).get(30, TimeUnit.SECONDS)
                .stream().map(address -> address.getMetadata().getName())
                .collect(Collectors.toSet());

        assertThat(allNames.size(), is(3));
        assertThat(allNames, is(names));

        AddressUtils.waitForDestinationsReady(addressApiClient, addrSpace, new TimeoutBudget(5, TimeUnit.MINUTES), anycast, multicast, longname);
    }

    @Test
    void testNonNamespacedOperations() throws Exception {
        String namespace1 = "test-namespace-1";
        String namespace2 = "test-namespace-2";

        AddressApiClient nameSpaceClient1 = new AddressApiClient(kubernetes, namespace1);
        AddressApiClient nameSpaceClient2 = new AddressApiClient(kubernetes, namespace2);

        try {
            kubernetes.createNamespace(namespace1);
            kubernetes.createNamespace(namespace2);

            log.info("--------------- Address space part -------------------");

            AddressSpace brokered = AddressSpaceUtils.createAddressSpaceObject("brokered", namespace1, AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD);
            AddressSpace standard = AddressSpaceUtils.createAddressSpaceObject("standard", namespace2, AddressSpaceType.STANDARD, AddressSpacePlans.STANDARD_SMALL, AuthenticationServiceType.STANDARD);

            createAddressSpace(brokered, nameSpaceClient1);
            createAddressSpace(standard, nameSpaceClient2);

            assertThat("Get all address spaces does not contain 2 address spaces",
                    AddressSpaceUtils.getAllAddressSpacesObjects(addressApiClient).get(1, TimeUnit.MINUTES).size(), is(2));

            log.info("------------------ Address part ----------------------");

            Address brokeredQueue = AddressUtils.createQueueAddressObject("test-queue", DestinationPlan.BROKERED_QUEUE);
            Address brokeredTopic = AddressUtils.createTopicAddressObject("test-topic", DestinationPlan.BROKERED_TOPIC);

            Address standardQueue = AddressUtils.createQueueAddressObject("test-queue", DestinationPlan.STANDARD_SMALL_QUEUE);
            Address standardTopic = AddressUtils.createTopicAddressObject("test-topic", DestinationPlan.STANDARD_SMALL_TOPIC);

            setAddresses(brokered, nameSpaceClient1, brokeredQueue, brokeredTopic);
            setAddresses(standard, nameSpaceClient2, standardQueue, standardTopic);

            assertThat("Get all addresses does not contain 4 addresses",
                    AddressUtils.getAllAddressesObjects(addressApiClient).get(1, TimeUnit.MINUTES).size(), is(4));

            log.info("-------------------- User part -----------------------");

            UserApiClient userApiClient1 = new UserApiClient(kubernetes, namespace1);
            UserApiClient userApiClient2 = new UserApiClient(kubernetes, namespace2);

            UserCredentials cred = new UserCredentials("pepa", "novak");

            userApiClient1.createUser(brokered.getMetadata().getName(), cred);
            userApiClient2.createUser(standard.getMetadata().getName(), cred);

            assertThat("Get all users does not contain 2 password users",
                    UserUtils.getAllUsersObjects(getUserApiClient()).get(1, TimeUnit.MINUTES)
                            .stream().filter(user -> user.getSpec().getAuthentication().getType().equals(UserAuthenticationType.password)).collect(Collectors.toList()).size(),
                    is(2));
        } finally {
            nameSpaceClient1.close();
            nameSpaceClient2.close();
            kubernetes.deleteNamespace(namespace1);
            kubernetes.deleteNamespace(namespace2);
        }
    }

    @Test
    void testCreateAddressSpaceViaApiNonAdmin() throws Exception {
        String namespace = "pepinator";
        UserCredentials user = new UserCredentials("jarda", "jarda");

        try {
            String token = KubeCMDClient.loginUser(user.getUsername(), user.getPassword());
            KubeCMDClient.createNamespace(namespace);

            AddressSpace addrSpace = AddressSpaceUtils.createAddressSpaceObject("non-admin-addr-space", AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD);
            AddressApiClient apiClient = new AddressApiClient(kubernetes, namespace, token);

            createAddressSpace(addrSpace, apiClient);
            waitForAddressSpaceReady(addrSpace, apiClient);

            deleteAddressSpace(addrSpace, apiClient);
        } finally {
            KubeCMDClient.loginUser(environment.getApiToken());
            KubeCMDClient.switchProject(environment.namespace());
            kubernetes.deleteNamespace(namespace);
        }
    }

    @Test
    void testReplaceAddressSpace() throws Exception {
        AddressSpace addressspace = AddressSpaceUtils.createAddressSpaceObject("test-replace-address-space", AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD);
        Address dest = AddressUtils.createQueueAddressObject("test-queue", DestinationPlan.BROKERED_QUEUE);
        UserCredentials cred = new UserCredentials("david", "password");

        createAddressSpace(addressspace);
        setAddresses(addressspace, dest);
        createUser(addressspace, cred);

        assertCanConnect(addressspace, cred, Collections.singletonList(dest));

        replaceAddressSpace(AddressSpaceUtils.createAddressSpaceObject("test-replace-address-space", AddressSpaceType.BROKERED, AuthenticationServiceType.STANDARD));

        assertCanConnect(addressspace, cred, Collections.singletonList(dest));

        addressspace = new DoneableAddressSpace(addressspace).editMetadata().withName("another-name").endMetadata().done();

        AddressSpace finalAddressspace1 = addressspace;
        Throwable exception = assertThrows(ExecutionException.class, () -> addressApiClient.replaceAddressSpace(finalAddressspace1, HTTP_NOT_FOUND));
        assertTrue(exception.getMessage().contains(String.format("AddressSpace %s not found", addressspace.getMetadata().getName())));

        addressspace = new DoneableAddressSpace(addressspace).editMetadata().withName("test-replace-address-space").endMetadata().editSpec().withPlan("no-exists").endSpec().done();

        AddressSpace finalAddressspace = addressspace;
        exception = assertThrows(ExecutionException.class, () -> addressApiClient.replaceAddressSpace(finalAddressspace, HTTP_BAD_REQUEST));
        assertTrue(exception.getMessage().contains("Unknown address space plan no-exists"));
    }
}
