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There is a newer version: 6.1.4
/*
 * 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;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.google.auto.value.AutoValue;
import org.graylog.autovalue.WithBeanGetter;
import org.graylog.grn.GRN;
import org.mongojack.Id;
import org.mongojack.ObjectId;

import javax.annotation.Nullable;
import javax.validation.constraints.NotNull;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.util.Optional;

@AutoValue
@WithBeanGetter
@JsonAutoDetect
@JsonDeserialize(builder = GrantDTO.Builder.class)
public abstract class GrantDTO {
    private static final String FIELD_ID = "id";
    static final String FIELD_GRANTEE = "grantee";
    static final String FIELD_CAPABILITY = "capability";
    public static final String FIELD_TARGET = "target";
    private static final String FIELD_CREATED_BY = "created_by";
    private static final String FIELD_CREATED_AT = "created_at";
    private static final String FIELD_UPDATED_BY = "updated_by";
    private static final String FIELD_UPDATED_AT = "updated_at";
    private static final String FIELD_EXPIRES_AT = "expires_at";

    @Id
    @ObjectId
    @Nullable
    @JsonProperty(FIELD_ID)
    public abstract String id();

    @JsonProperty(FIELD_GRANTEE)
    public abstract GRN grantee();

    @NotNull
    @JsonProperty(FIELD_CAPABILITY)
    public abstract Capability capability();

    @NotNull
    @JsonProperty(FIELD_TARGET)
    public abstract GRN target();

    @JsonProperty(FIELD_CREATED_BY)
    public abstract String createdBy();

    @JsonProperty(FIELD_CREATED_AT)
    public abstract ZonedDateTime createdAt();

    @JsonProperty(FIELD_UPDATED_BY)
    public abstract String updatedBy();

    @JsonProperty(FIELD_UPDATED_AT)
    public abstract ZonedDateTime updatedAt();

    @JsonProperty(FIELD_EXPIRES_AT)
    public abstract Optional expiresAt();

    public static GrantDTO of(GRN grantee, Capability capability, GRN target) {
        return GrantDTO.builder()
                .grantee(grantee)
                .capability(capability)
                .target(target)
                .build();
    }

    public static Builder builder() {
        return Builder.create();
    }

    public abstract Builder toBuilder();

    @AutoValue.Builder
    public abstract static class Builder {
        @JsonCreator
        public static Builder create() {
            return new AutoValue_GrantDTO.Builder()
                    .createdBy("")
                    .createdAt(ZonedDateTime.now(ZoneOffset.UTC))
                    .updatedBy("")
                    .updatedAt(ZonedDateTime.now(ZoneOffset.UTC));
        }

        @Id
        @ObjectId
        @JsonProperty(FIELD_ID)
        public abstract Builder id(@Nullable String id);

        @JsonProperty(FIELD_GRANTEE)
        public abstract Builder grantee(GRN grantee);

        @JsonProperty(FIELD_CAPABILITY)
        public abstract Builder capability(Capability capability);

        @JsonProperty(FIELD_TARGET)
        public abstract Builder target(GRN target);

        @JsonProperty(FIELD_CREATED_BY)
        public abstract Builder createdBy(String createdBy);

        @JsonProperty(FIELD_CREATED_AT)
        public abstract Builder createdAt(ZonedDateTime createdAt);

        @JsonProperty(FIELD_UPDATED_BY)
        public abstract Builder updatedBy(String updatedBy);

        @JsonProperty(FIELD_UPDATED_AT)
        public abstract Builder updatedAt(ZonedDateTime updatedAt);

        @JsonProperty(FIELD_EXPIRES_AT)
        public abstract Builder expiresAt(@Nullable ZonedDateTime expiresAt);

        public abstract GrantDTO build();
    }
}