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/*
 * Copyright Anatoliy Sablin [email protected]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.github.ma1uta.matrix.impl.exception;

import io.github.ma1uta.matrix.common.ErrorResponse;
import io.github.ma1uta.matrix.common.ExceptionResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.HttpsURLConnection;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;

/**
 * Common exception handler.
 */
public class ExceptionHandler implements ExceptionMapper {

    private static final Logger LOGGER = LoggerFactory.getLogger(ExceptionHandler.class);

    @Override
    public Response toResponse(Throwable exception) {

        LOGGER.error("Exception:", exception);

        ExceptionResponse message;
        Integer status;
        if (exception instanceof MatrixException) {
            MatrixException matrixException = (MatrixException) exception;
            message = matrixException.getResponse();
            status = matrixException.getStatus();
        } else {
            message = message(exception);
            status = HttpsURLConnection.HTTP_INTERNAL_ERROR;
        }

        return Response.status(status).entity(message).build();
    }

    protected ErrorResponse message(Throwable throwable) {
        return new ErrorResponse(MatrixException.M_INTERNAL, throwable.getMessage());
    }
}