/*
 * 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.security.authorization.restriction;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.jackrabbit.JcrConstants;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.api.Tree;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.AbstractRestrictionProvider;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.Restriction;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.RestrictionDefinition;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.RestrictionDefinitionImpl;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.RestrictionImpl;
import org.apache.jackrabbit.oak.spi.security.authorization.restriction.RestrictionPattern;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * RestrictionProvider for tests.
 */
final class TestProvider extends AbstractRestrictionProvider {

    private final boolean nonValidatingRead;

    TestProvider(Map<String, ? extends RestrictionDefinition> supportedRestrictions) {
        this(supportedRestrictions, false);
    }

    TestProvider(Map<String, ? extends RestrictionDefinition> supportedRestrictions, boolean nonValidatingRead) {
        super(supportedRestrictions);
        this.nonValidatingRead = nonValidatingRead;
    }

    @NotNull
    @Override
    public Set<Restriction> readRestrictions(String oakPath, @NotNull Tree aceTree) {
        if (nonValidatingRead) {
            Set<Restriction> restrictions = new HashSet<>();
            for (PropertyState propertyState : getRestrictionsTree(aceTree).getProperties()) {
                String name = propertyState.getName();
                if (!JcrConstants.JCR_PRIMARYTYPE.equals(name)) {
                    restrictions.add(new RestrictionImpl(propertyState, new RestrictionDefinitionImpl(name, propertyState.getType(), false)));
                }
            }
            return restrictions;
        } else {
            return super.readRestrictions(oakPath, aceTree);
        }
    }

    @NotNull
    @Override
    public RestrictionPattern getPattern(@Nullable String oakPath, @NotNull Tree tree) {
        boolean hasRestriction = false;
        for (RestrictionDefinition rd : getSupportedRestrictions(oakPath)) {
            if (tree.hasProperty(rd.getName())) {
                hasRestriction = true;
                break;
            }
        }
        return (hasRestriction) ? new MatchingPattern() : RestrictionPattern.EMPTY;
    }

    @NotNull
    @Override
    public RestrictionPattern getPattern(@Nullable String oakPath, @NotNull Set<Restriction> restrictions) {
        for (Restriction r : restrictions) {
            if (getSupportedRestrictions(oakPath).contains(r.getDefinition())) {
                return new MatchingPattern();
            }
        }
        return RestrictionPattern.EMPTY;
    }

    private static final class MatchingPattern implements RestrictionPattern {

        @Override
        public boolean matches(@NotNull Tree tree, @Nullable PropertyState property) {
            return true;
        }

        @Override
        public boolean matches(@NotNull String path) {
            return true;
        }

        @Override
        public boolean matches() {
            return true;
        }
    }
}
