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/*
 * Copyright © 2016-2018 European Support Limited
 *
 * 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 org.openecomp.sdc.itempermissions.dao.impl;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.verify;
import static org.openecomp.sdc.itempermissions.notifications.NotificationConstants.ITEM_ID_PROP;
import static org.openecomp.sdc.itempermissions.notifications.NotificationConstants.PERMISSION_CHANGED;
import static org.openecomp.sdc.itempermissions.notifications.NotificationConstants.PERMISSION_GRANTED;
import static org.openecomp.sdc.itempermissions.notifications.NotificationConstants.PERMISSION_ITEM;

import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.InjectMocks;
import org.mockito.Matchers;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.junit.jupiter.MockitoExtension;
import org.openecomp.sdc.common.errors.CoreException;
import org.openecomp.sdc.common.session.SessionContextProviderFactory;
import org.openecomp.sdc.itempermissions.PermissionsServices;
import org.openecomp.sdc.notification.dtos.Event;
import org.openecomp.sdc.notification.services.NotificationPropagationManager;
import org.openecomp.sdc.notification.services.SubscriptionService;
import org.openecomp.sdc.versioning.AsdcItemManager;
import org.openecomp.sdc.versioning.types.Item;

@ExtendWith(MockitoExtension.class)
class PermissionsManagerImplTest {

    private static final String ITEM1_ID = "1";
    private static final String PERMISSION = "Contributor";
    private static final String ACTION = "Change_Item_Permissions";
    private static final String USER = "user";
    private static final String AFFECTED_USER1 = "affected_user1";
    private static final String AFFECTED_USER2 = "affected_user2";
    private static final String AFFECTED_USER3 = "affected_user3";
    private static final String tenant = "dox";

    @Mock
    private PermissionsServices permissionsServicesMock;
    @Mock
    private AsdcItemManager asdcItemManagerMock;
    @Mock
    private SubscriptionService subscriptionServiceMock;
    @Mock
    private NotificationPropagationManager notifierMock;
    @Captor
    private ArgumentCaptor<Event> eventArgumentCaptor;

    @InjectMocks
    private PermissionsManagerImpl permissionsManager;

    @BeforeEach
    public void setUp() throws Exception {
        SessionContextProviderFactory.getInstance().createInterface().create(USER,
            tenant);
        MockitoAnnotations.openMocks(this);
    }

    @Test
    void testUpdateItemPermissionsWhenNotAllowed() {
        doReturn(false).when(permissionsServicesMock).isAllowed(ITEM1_ID, USER, ACTION);
        final HashSet<String> removedUsersIds = new HashSet<>();
        final Set<String> addedUsersIds = Collections.singleton(AFFECTED_USER1);
        Assertions.assertThrows(CoreException.class, () -> {
            permissionsManager.updateItemPermissions(ITEM1_ID, PERMISSION, addedUsersIds, removedUsersIds);
        });
    }

    @Test
    void testUpdateItemPermissions() {
        doReturn(true).when(permissionsServicesMock).isAllowed(ITEM1_ID, USER, ACTION);
        Item item = new Item();
        item.setName("Item 1 Name");
        doReturn(item).when(asdcItemManagerMock).get(ITEM1_ID);

        Set<String> addedUsersIds =
            Stream.of(AFFECTED_USER1, AFFECTED_USER2).collect(Collectors.toSet());
        Set<String> removedUsersIds = Collections.singleton(AFFECTED_USER3);
        permissionsManager
            .updateItemPermissions(ITEM1_ID, PERMISSION, addedUsersIds, removedUsersIds);

        verify(permissionsServicesMock)
            .updateItemPermissions(ITEM1_ID, PERMISSION, addedUsersIds, removedUsersIds);

        for (String addedUsersId : addedUsersIds) {
            verifyCallsToNotificationsFramework(addedUsersId, true);
        }
        for (String removedUsersId : removedUsersIds) {
            verifyCallsToNotificationsFramework(removedUsersId, false);
        }
    }

    @Test
    void testListUserPermittedItems() {
        permissionsManager.listUserPermittedItems(AFFECTED_USER1, PERMISSION);

        verify(permissionsServicesMock)
            .listUserPermittedItems(AFFECTED_USER1, PERMISSION);

    }

    private void verifyCallsToNotificationsFramework(String affectedUser, boolean permissionGranted) {
        verifyCallToSubscriptionService(affectedUser, permissionGranted);
        verifyDirectNotificationCallParameters(affectedUser, permissionGranted);
    }

    private void verifyDirectNotificationCallParameters(String affectedUser, boolean permissionGranted) {
        verify(notifierMock).directNotification(eventArgumentCaptor.capture(), Matchers.eq(affectedUser));
        Event event = eventArgumentCaptor.getValue();
        assertTrue(event.getEventType().equals(PERMISSION_CHANGED));
        Map<String, Object> attributes = event.getAttributes();
        assertEquals(attributes.get(PERMISSION_GRANTED), permissionGranted);
        assertEquals(attributes.get(ITEM_ID_PROP), ITEM1_ID);
        assertEquals(attributes.get(PERMISSION_ITEM), PERMISSION);
    }

    private void verifyCallToSubscriptionService(String affectedUser, boolean permissionGranted) {
        if (permissionGranted) {
            verify(subscriptionServiceMock).subscribe(affectedUser, ITEM1_ID);
        } else {
            verify(subscriptionServiceMock).unsubscribe(affectedUser, ITEM1_ID);
        }
    }

}