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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.plugins.views.search.rest;

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 com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import org.graylog.plugins.views.search.Parameter;
import org.graylog.plugins.views.search.engine.BackendQuery;
import org.graylog2.plugin.indexer.searches.timeranges.TimeRange;

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

@AutoValue
@JsonAutoDetect
@JsonDeserialize(builder = ValidationRequestDTO.Builder.class)
public abstract class ValidationRequestDTO {

    private static final String FIELD_STREAMS = "streams";
    private static final String FIELD_TIMERANGE = "timerange";

    @JsonProperty
    public abstract BackendQuery query();

    /**
     * For validation, we assume that the filter ist another query-string. This is a different approach
     * than the one used in the Search!
     *
     * @return
     */
    @JsonProperty
    public abstract Optional filter();

    @JsonProperty(FIELD_TIMERANGE)
    public abstract Optional timerange();

    @JsonProperty(FIELD_STREAMS)
    public abstract Optional> streams();

    @JsonProperty
    public abstract ImmutableSet parameters();

    @JsonProperty
    public abstract ImmutableMap parameterBindings();

    @JsonProperty
    public abstract ValidationModeDTO validationMode();

    @AutoValue.Builder
    public abstract static class Builder {

        @JsonProperty
        public abstract Builder query(BackendQuery query);

        @JsonProperty
        public abstract Builder filter(@Nullable BackendQuery filter);

        @JsonProperty(FIELD_STREAMS)
        public abstract Builder streams(@Nullable Set streams);

        @JsonProperty(FIELD_TIMERANGE)
        public abstract Builder timerange(@Nullable TimeRange timerange);

        public abstract ImmutableMap.Builder parameterBindingsBuilder();

        @JsonProperty("parameter_bindings")
        public Builder withParameterBindings(Map values) {
            values.forEach((s, o) -> parameterBindingsBuilder().put(s, o));
            return this;
        }

        public abstract ImmutableSet.Builder parametersBuilder();

        @JsonProperty
        public Builder withParameters(Set values) {
            values.forEach(p -> parametersBuilder().add(p));
            return this;
        }

        @JsonProperty
        public abstract Builder validationMode(ValidationModeDTO mode);

        public abstract ValidationRequestDTO build();

        @JsonCreator
        public static Builder builder() {
            return new AutoValue_ValidationRequestDTO.Builder()
                    .validationMode(ValidationModeDTO.QUERY);
        }
    }
}