/*
 * 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 org.apache.jackrabbit.oak.spi.security.user.action;

import java.util.List;
import java.util.Set;
import javax.annotation.Nonnull;
import javax.jcr.RepositoryException;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import org.apache.jackrabbit.api.security.user.Authorizable;
import org.apache.jackrabbit.api.security.user.Group;
import org.apache.jackrabbit.api.security.user.User;
import org.apache.jackrabbit.oak.AbstractSecurityTest;
import org.apache.jackrabbit.oak.api.Root;
import org.apache.jackrabbit.oak.namepath.NamePathMapper;
import org.apache.jackrabbit.oak.spi.security.ConfigurationParameters;
import org.apache.jackrabbit.oak.spi.security.SecurityProvider;
import org.apache.jackrabbit.oak.spi.security.user.UserConfiguration;
import org.apache.jackrabbit.oak.spi.security.user.UserConstants;
import org.apache.jackrabbit.oak.spi.xml.ImportBehavior;
import org.apache.jackrabbit.oak.spi.xml.ProtectedItemImporter;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class GroupActionTest extends AbstractSecurityTest {

    private static final String TEST_GROUP_ID = "testGroup";
    private static final String TEST_USER_PREFIX = "testUser";

    final TestGroupAction groupAction = new TestGroupAction();
    private final AuthorizableActionProvider actionProvider = new AuthorizableActionProvider() {
        @Nonnull
        @Override
        public List<? extends AuthorizableAction> getAuthorizableActions(@Nonnull SecurityProvider securityProvider) {
            return ImmutableList.of(groupAction);
        }
    };

    private User testUser01;
    private User testUser02;

    Group testGroup;

    @Before
    public void before() throws Exception {
        super.before();

        testGroup = getUserManager(root).createGroup(TEST_GROUP_ID);
        root.commit();
    }

    @After
    public void after() throws Exception {
        if (testGroup != null) {
            testGroup.remove();
            root.commit();
        }

        if (testUser01 != null) {
            testUser01.remove();
            root.commit();
        }

        if (testUser02 != null) {
            testUser02.remove();
            root.commit();
        }

        root = null;
        super.after();
    }

    @Override
    protected ConfigurationParameters getSecurityConfigParameters() {
        ConfigurationParameters userParams = ConfigurationParameters.of(
                UserConstants.PARAM_AUTHORIZABLE_ACTION_PROVIDER, actionProvider,
                ProtectedItemImporter.PARAM_IMPORT_BEHAVIOR, getImportBehavior()
        );
        return ConfigurationParameters.of(UserConfiguration.NAME, userParams);
    }

    String getImportBehavior() {
        return ImportBehavior.NAME_IGNORE;
    }

    @Test
    public void testMemberAdded() throws Exception {
        testUser01 = getUserManager(root).createUser(TEST_USER_PREFIX + "01", "");

        testGroup.addMember(testUser01);
        assertTrue(groupAction.onMemberAddedCalled);
        assertEquals(testGroup, groupAction.group);
        assertEquals(testUser01, groupAction.member);
    }

    @Test
    public void testMemberRemoved() throws Exception {
        testUser01 = getUserManager(root).createUser(TEST_USER_PREFIX + "01", "");
        testGroup.addMember(testUser01);
        root.commit();

        testGroup.removeMember(testUser01);
        assertTrue(groupAction.onMemberRemovedCalled);
        assertEquals(testGroup, groupAction.group);
        assertEquals(testUser01, groupAction.member);
    }

    @Test
    public void testMembersAdded() throws Exception {
        testUser01 = getUserManager(root).createUser(TEST_USER_PREFIX + "01", "");
        testUser02 = getUserManager(root).createUser(TEST_USER_PREFIX + "02", "");
        testGroup.addMember(testUser02);

        Set<String> memberIds = ImmutableSet.of(testUser01.getID());
        Set<String> failedIds = ImmutableSet.of(testUser02.getID(), testGroup.getID());
        Iterable<String> ids = Iterables.concat(memberIds, failedIds);

        testGroup.addMembers(Iterables.toArray(ids, String.class));
        assertTrue(groupAction.onMembersAddedCalled);
        assertEquals(testGroup, groupAction.group);
        assertEquals(memberIds, groupAction.memberIds);
        assertEquals(failedIds, groupAction.failedIds);
    }

    @Test
    public void testMembersAddedNonExisting() throws Exception {
        Set<String> nonExisting = ImmutableSet.of("blinder", "passagier");

        testGroup.addMembers(nonExisting.toArray(new String[nonExisting.size()]));
        assertFalse(groupAction.memberIds.iterator().hasNext());
        assertTrue(Iterables.elementsEqual(nonExisting, groupAction.failedIds));
    }

    @Test
    public void testMembersRemoved() throws Exception {
        testUser01 = getUserManager(root).createUser(TEST_USER_PREFIX + "01", "");
        testUser02 = getUserManager(root).createUser(TEST_USER_PREFIX + "02", "");
        testGroup.addMember(testUser01);

        Set<String> memberIds = ImmutableSet.of(testUser01.getID());
        Set<String> failedIds = ImmutableSet.of(testUser02.getID(), testGroup.getID());
        Iterable<String> ids = Iterables.concat(memberIds, failedIds);

        testGroup.removeMembers(Iterables.toArray(ids, String.class));
        assertTrue(groupAction.onMembersRemovedCalled);
        assertEquals(testGroup, groupAction.group);
        assertEquals(memberIds, groupAction.memberIds);
        assertEquals(failedIds, groupAction.failedIds);
    }

    @Test
    public void testMembersRemovedNonExisting() throws Exception {
        Set<String> nonExisting = ImmutableSet.of("blinder", "passagier");

        testGroup.removeMembers(nonExisting.toArray(new String[nonExisting.size()]));
        assertFalse(groupAction.memberIds.iterator().hasNext());
        assertTrue(Iterables.elementsEqual(nonExisting, groupAction.failedIds));
    }

    class TestGroupAction extends AbstractGroupAction {

        boolean onMemberAddedCalled = false;
        boolean onMembersAddedCalled = false;
        boolean onMemberRemovedCalled = false;
        boolean onMembersRemovedCalled = false;

        Group group;
        Set<String> memberIds;
        Set<String> failedIds;
        Authorizable member;

        @Override
        public void onMemberAdded(@Nonnull Group group, @Nonnull Authorizable member, @Nonnull Root root, @Nonnull NamePathMapper namePathMapper) throws RepositoryException {
            this.group = group;
            this.member = member;
            onMemberAddedCalled = true;
        }

        @Override
        public void onMembersAdded(@Nonnull Group group, @Nonnull Iterable<String> memberIds, @Nonnull Iterable<String> failedIds, @Nonnull Root root, @Nonnull NamePathMapper namePathMapper) throws RepositoryException {
            this.group = group;
            this.memberIds = ImmutableSet.copyOf(memberIds);
            this.failedIds = ImmutableSet.copyOf(failedIds);
            onMembersAddedCalled = true;
        }

        @Override
        public void onMemberRemoved(@Nonnull Group group, @Nonnull Authorizable member, @Nonnull Root root, @Nonnull NamePathMapper namePathMapper) throws RepositoryException {
            this.group = group;
            this.member = member;
            onMemberRemovedCalled = true;
        }

        @Override
        public void onMembersRemoved(@Nonnull Group group, @Nonnull Iterable<String> memberIds, @Nonnull Iterable<String> failedIds, @Nonnull Root root, @Nonnull NamePathMapper namePathMapper) throws RepositoryException {
            this.group = group;
            this.memberIds = ImmutableSet.copyOf(memberIds);
            this.failedIds = ImmutableSet.copyOf(failedIds);
            onMembersRemovedCalled = true;
        }
    }
}
