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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog.security.shares;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import org.graylog.grn.GRN;
import org.graylog.security.Capability;

import javax.annotation.Nullable;
import java.util.Map;
import java.util.Optional;
import java.util.Set;

@AutoValue
@JsonAutoDetect
public abstract class EntityShareRequest {

    public static final String SELECTED_GRANTEE_CAPABILITIES = "selected_grantee_capabilities";

    @JsonProperty(SELECTED_GRANTEE_CAPABILITIES)
    public abstract Optional> selectedGranteeCapabilities();

    public Set grantees() {
        return selectedGranteeCapabilities().map(ImmutableMap::keySet).orElse(ImmutableSet.of());
    }

    public Set capabilities() {
        return selectedGranteeCapabilities()
                .map(ImmutableMap::values)
                .map(ImmutableSet::copyOf)
                .orElse(ImmutableSet.of());
    }

    @JsonCreator
    public static EntityShareRequest create(@JsonProperty("selected_grantee_capabilities") @Nullable Map selectedGranteeCapabilities) {
        final ImmutableMap value = selectedGranteeCapabilities == null ? null : ImmutableMap.copyOf(selectedGranteeCapabilities);
        return new AutoValue_EntityShareRequest(Optional.ofNullable(value));
    }
}