/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.xcontent;

import java.io.IOException;

import static org.elasticsearch.xcontent.ConstructingObjectParser.constructorArg;

/**
 * Simple structure with 3 fields: int, double and String.
 * Used for testing parsers.
 */
record SimpleStruct(int i, double d, String s) implements ToXContentObject {

    static SimpleStruct fromXContent(XContentParser parser) {
        return PARSER.apply(parser, null);
    }

    private static final ParseField I = new ParseField("i");
    private static final ParseField D = new ParseField("d");
    private static final ParseField S = new ParseField("s");

    @SuppressWarnings("unchecked")
    private static final ConstructingObjectParser<SimpleStruct, Void> PARSER = new ConstructingObjectParser<>(
        "simple_struct",
        true,
        args -> new SimpleStruct((int) args[0], (double) args[1], (String) args[2])
    );

    static {
        PARSER.declareInt(constructorArg(), I);
        PARSER.declareDouble(constructorArg(), D);
        PARSER.declareString(constructorArg(), S);
    }

    @Override
    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
        return builder.startObject()
            .field(I.getPreferredName(), i)
            .field(D.getPreferredName(), d)
            .field(S.getPreferredName(), s)
            .endObject();
    }
}