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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [https://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.server.httpv2.request;

import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.json.JsonMapper;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.Consumes;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;

@Provider
@Consumes(MediaType.APPLICATION_JSON)
public class JsonMessageBodyReader implements MessageBodyReader {
    private final JsonMapper jsonMapper;

    public JsonMessageBodyReader() {
        this.jsonMapper = JsonMapper.builder()
                .enable(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS)
                .build();
    }

    @Override
    public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return type.isAssignableFrom(QueryRequest.class);
    }

    @Override
    public QueryRequest readFrom(
            Class type,
            Type genericType,
            Annotation[] annotations,
            MediaType mediaType,
            MultivaluedMap httpHeaders,
            InputStream entityStream)
            throws IOException, WebApplicationException {
        try {
            return jsonMapper.readValue(entityStream, QueryRequest.class);
        } catch (JacksonException e) {
            throw new BadRequestException(e);
        }
    }
}