/*
Copyright 2020 The Kubernetes 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
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 io.kubernetes.client.util.generic;

import static com.github.tomakehurst.wiremock.client.WireMock.*;
import static org.junit.Assert.*;

import com.github.tomakehurst.wiremock.junit.WireMockRule;
import com.google.gson.Gson;
import io.kubernetes.client.custom.V1Patch;
import io.kubernetes.client.openapi.ApiClient;
import io.kubernetes.client.openapi.ApiException;
import io.kubernetes.client.openapi.models.*;
import io.kubernetes.client.util.ClientBuilder;
import io.kubernetes.client.util.Watchable;
import io.kubernetes.client.util.generic.options.ListOptions;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

public class GenericKubernetesApiTest {

  @Rule public WireMockRule wireMockRule = new WireMockRule(8181);

  private GenericKubernetesApi<V1Job, V1JobList> jobClient;

  @Before
  public void setup() throws IOException {
    ApiClient apiClient = new ClientBuilder().setBasePath("http://localhost:" + 8181).build();
    jobClient =
        new GenericKubernetesApi<>(V1Job.class, V1JobList.class, "batch", "v1", "jobs", apiClient);
  }

  // test delete
  @Test
  public void deleteNamespacedJobReturningStatus() {
    V1Status status = new V1Status().kind("Status").code(200).message("good!");
    stubFor(
        delete(urlEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(status))));

    KubernetesApiResponse<V1Job> deleteJobResp = jobClient.delete("default", "foo1", null);
    assertTrue(deleteJobResp.isSuccess());
    assertEquals(status, deleteJobResp.getStatus());
    assertNull(deleteJobResp.getObject());
    verify(1, deleteRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1")));
  }

  @Test
  public void deleteNamespacedJobReturningDeletedObject() {
    V1Job foo1 =
        new V1Job().kind("Job").metadata(new V1ObjectMeta().namespace("default").name("foo1"));

    stubFor(
        delete(urlEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(foo1))));

    KubernetesApiResponse<V1Job> deleteJobResp = jobClient.delete("default", "foo1");
    assertTrue(deleteJobResp.isSuccess());
    assertEquals(foo1, deleteJobResp.getObject());
    assertNull(deleteJobResp.getStatus());
    verify(1, deleteRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1")));
  }

  @Test
  public void deleteNamespacedJobReturningForbiddenStatus() {
    V1Status status = new V1Status().kind("Status").code(403).message("good!");

    stubFor(
        delete(urlEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1"))
            .willReturn(aResponse().withStatus(403).withBody(new Gson().toJson(status))));

    KubernetesApiResponse<V1Job> deleteJobResp = jobClient.delete("default", "foo1");
    assertFalse(deleteJobResp.isSuccess());
    assertEquals(status, deleteJobResp.getStatus());
    assertNull(deleteJobResp.getObject());
    verify(1, deleteRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1")));
  }

  @Test
  public void listNamespacedJobReturningObject() {
    V1JobList jobList = new V1JobList().kind("JobList").metadata(new V1ListMeta());

    stubFor(
        get(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(jobList))));
    KubernetesApiResponse<V1JobList> jobListResp = jobClient.list("default");
    assertTrue(jobListResp.isSuccess());
    assertEquals(jobList, jobListResp.getObject());
    assertNull(jobListResp.getStatus());
    verify(1, getRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs")));
  }

  @Test
  public void listClusterJobReturningObject() {
    V1JobList jobList = new V1JobList().kind("JobList").metadata(new V1ListMeta());

    stubFor(
        get(urlPathEqualTo("/apis/batch/v1/jobs"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(jobList))));
    KubernetesApiResponse<V1JobList> jobListResp = jobClient.list();
    assertTrue(jobListResp.isSuccess());
    assertEquals(jobList, jobListResp.getObject());
    assertNull(jobListResp.getStatus());
    verify(1, getRequestedFor(urlPathEqualTo("/apis/batch/v1/jobs")));
  }

  @Test
  public void createNamespacedJobReturningObject() {
    V1Job foo1 =
        new V1Job().kind("Job").metadata(new V1ObjectMeta().namespace("default").name("foo1"));

    stubFor(
        post(urlEqualTo("/apis/batch/v1/namespaces/default/jobs"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(foo1))));
    KubernetesApiResponse<V1Job> jobListResp = jobClient.create(foo1);
    assertTrue(jobListResp.isSuccess());
    assertEquals(foo1, jobListResp.getObject());
    assertNull(jobListResp.getStatus());
    verify(1, postRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs")));
  }

  @Test
  public void updateNamespacedJobReturningObject() {
    V1Job foo1 =
        new V1Job().kind("Job").metadata(new V1ObjectMeta().namespace("default").name("foo1"));

    stubFor(
        put(urlEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(foo1))));
    KubernetesApiResponse<V1Job> jobListResp = jobClient.update(foo1);
    assertTrue(jobListResp.isSuccess());
    assertEquals(foo1, jobListResp.getObject());
    assertNull(jobListResp.getStatus());
    verify(1, putRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1")));
  }

  @Test
  public void patchNamespacedJobReturningObject() {
    V1Patch v1Patch = new V1Patch("{}");
    V1Job foo1 =
        new V1Job().kind("Job").metadata(new V1ObjectMeta().namespace("default").name("foo1"));
    stubFor(
        patch(urlEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1"))
            .withHeader("Content-Type", containing(V1Patch.PATCH_FORMAT_STRATEGIC_MERGE_PATCH))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(foo1))));
    KubernetesApiResponse<V1Job> jobPatchResp =
        jobClient.patch("default", "foo1", V1Patch.PATCH_FORMAT_STRATEGIC_MERGE_PATCH, v1Patch);

    assertTrue(jobPatchResp.isSuccess());
    assertEquals(foo1, jobPatchResp.getObject());
    assertNull(jobPatchResp.getStatus());
    verify(1, patchRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs/foo1")));
  }

  @Test
  public void watchNamespacedJobReturningObject() throws ApiException {
    V1JobList jobList = new V1JobList().kind("JobList").metadata(new V1ListMeta());

    stubFor(
        get(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs"))
            .willReturn(aResponse().withStatus(200).withBody(new Gson().toJson(jobList))));
    Watchable<V1Job> jobListWatch = jobClient.watch("default", new ListOptions());
    verify(
        1,
        getRequestedFor(urlPathEqualTo("/apis/batch/v1/namespaces/default/jobs"))
            .withQueryParam("watch", equalTo("true")));
  }

  @Test
  public void testReadTimeoutShouldThrowException() {
    ApiClient apiClient = new ClientBuilder().setBasePath("http://localhost:" + 8181).build();
    apiClient.setHttpClient(
        apiClient
            .getHttpClient()
            .newBuilder()
            .readTimeout(1, TimeUnit.MILLISECONDS) // timeout everytime
            .build());
    stubFor(
        get(urlEqualTo("/apis/batch/v1/namespaces/foo/jobs/test"))
            .willReturn(aResponse().withFixedDelay(99999).withStatus(200).withBody("")));
    jobClient =
        new GenericKubernetesApi<>(V1Job.class, V1JobList.class, "batch", "v1", "jobs", apiClient);
    try {
      KubernetesApiResponse<V1Job> response = jobClient.get("foo", "test");
    } catch (Throwable t) {
      assertTrue(t.getCause() instanceof SocketTimeoutException);
      return;
    }
    fail("no exception happened");
  }
}
