/*
 * 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 com.epam.dlab.backendapi.resources;

import com.epam.dlab.auth.UserInfo;
import com.epam.dlab.backendapi.resources.dto.HealthStatusPageDTO;
import com.epam.dlab.backendapi.service.InfrastructureInfoService;
import com.epam.dlab.dto.InfrastructureMetaInfoDTO;
import com.epam.dlab.exceptions.DlabException;
import io.dropwizard.auth.AuthenticationException;
import io.dropwizard.testing.junit.ResourceTestRule;
import org.apache.http.HttpStatus;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.anyBoolean;
import static org.mockito.Mockito.anyString;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.refEq;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.verifyZeroInteractions;
import static org.mockito.Mockito.when;

public class InfrastructureInfoResourceTest extends TestBase {

	private InfrastructureInfoService infrastructureInfoService = mock(InfrastructureInfoService.class);

	@Rule
	public final ResourceTestRule resources =
			getResourceTestRuleInstance(new InfrastructureInfoResource(infrastructureInfoService));

	@Before
	public void setup() throws AuthenticationException {
		authSetup();
	}

	@Test
	public void status() {
		final Response response = resources.getJerseyTest()
				.target("/infrastructure")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_OK, response.getStatus());
		assertNull(response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verifyZeroInteractions(infrastructureInfoService);
	}

	@Test
	public void statusWithFailedAuth() throws AuthenticationException {
		authFailSetup();
		final Response response = resources.getJerseyTest()
				.target("/infrastructure")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_OK, response.getStatus());
		assertNull(response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verifyZeroInteractions(infrastructureInfoService);
	}

	@Test
	public void healthStatus() {
		HealthStatusPageDTO hspDto = getHealthStatusPageDTO();
		when(infrastructureInfoService.getHeathStatus(any(UserInfo.class), anyBoolean())).thenReturn(hspDto);
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/status")
				.queryParam("full", "1")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_OK, response.getStatus());
		assertEquals(hspDto.getStatus(), response.readEntity(HealthStatusPageDTO.class).getStatus());
		assertEquals(MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verify(infrastructureInfoService).getHeathStatus(refEq(getUserInfo()), eq(true));
		verifyNoMoreInteractions(infrastructureInfoService);
	}

	@Test
	public void healthStatusWithFailedAuth() throws AuthenticationException {
		authFailSetup();
		HealthStatusPageDTO hspDto = getHealthStatusPageDTO();
		when(infrastructureInfoService.getHeathStatus(any(UserInfo.class), anyBoolean())).thenReturn(hspDto);
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/status")
				.queryParam("full", "1")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_OK, response.getStatus());
		assertEquals(hspDto.getStatus(), response.readEntity(HealthStatusPageDTO.class).getStatus());
		assertEquals(MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verify(infrastructureInfoService).getHeathStatus(refEq(getUserInfo()), eq(true));
		verifyNoMoreInteractions(infrastructureInfoService);
	}

	@Test
	public void healthStatusWithDefaultQueryParam() {
		HealthStatusPageDTO hspDto = getHealthStatusPageDTO();
		when(infrastructureInfoService.getHeathStatus(any(UserInfo.class), anyBoolean())).thenReturn(hspDto);
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/status")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_OK, response.getStatus());
		assertEquals(hspDto.getStatus(), response.readEntity(HealthStatusPageDTO.class).getStatus());
		assertEquals(MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verify(infrastructureInfoService).getHeathStatus(refEq(getUserInfo()), eq(false));
		verifyNoMoreInteractions(infrastructureInfoService);
	}

	@Test
	public void healthStatusWithException() {
		doThrow(new DlabException("Could not return status of resources for user"))
				.when(infrastructureInfoService).getHeathStatus(any(UserInfo.class), anyBoolean());
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/status")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_INTERNAL_SERVER_ERROR, response.getStatus());
		assertEquals(MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verify(infrastructureInfoService).getHeathStatus(refEq(getUserInfo()), eq(false));
		verifyNoMoreInteractions(infrastructureInfoService);
	}


	@Test
	public void getUserResourcesWithException() {
		doThrow(new DlabException("Could not load list of provisioned resources for user"))
				.when(infrastructureInfoService).getUserResources(any(UserInfo.class));
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/info")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		assertEquals(HttpStatus.SC_INTERNAL_SERVER_ERROR, response.getStatus());
		assertEquals(MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));

		verify(infrastructureInfoService).getUserResources(any());
		verifyNoMoreInteractions(infrastructureInfoService);
	}

	@Test
	public void getInfrastructureMeta() {

		when(infrastructureInfoService.getInfrastructureMetaInfo()).thenReturn(
				InfrastructureMetaInfoDTO.builder()
						.version("1.0").build());
		final Response response = resources.getJerseyTest()
				.target("/infrastructure/meta")
				.request()
				.header("Authorization", "Bearer " + TOKEN)
				.get();

		final InfrastructureMetaInfoDTO infrastructureMetaInfoDTO =
				response.readEntity(InfrastructureMetaInfoDTO.class);
		assertEquals("1.0", infrastructureMetaInfoDTO.getVersion());
	}

	private HealthStatusPageDTO getHealthStatusPageDTO() {
		return HealthStatusPageDTO.builder()
				.status("someStatus")
				.build();
	}
}