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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.graylog2.shared.rest.exceptionmappers;

import com.fasterxml.jackson.databind.JsonMappingException;
import org.graylog2.plugin.rest.ApiError;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;

import static com.google.common.base.MoreObjects.firstNonNull;
import static javax.ws.rs.core.Response.status;

@Provider
public class JsonMappingExceptionMapper implements ExceptionMapper {
    @Override
    public Response toResponse(JsonMappingException e) {
        final String message = firstNonNull(e.getMessage(), "Couldn't process JSON input");
        final ApiError apiError = ApiError.create(message);
        return status(Response.Status.BAD_REQUEST).type(MediaType.APPLICATION_JSON_TYPE).entity(apiError).build();
    }
}