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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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 org.apache.custos.api;

import org.apache.custos.core.exception.UnauthorizedException;
import org.apache.custos.service.exceptions.AuthenticationException;
import org.apache.custos.service.exceptions.InternalServerException;
import jakarta.persistence.EntityNotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

@ControllerAdvice
public class GlobalExceptionHandler {

    private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);

    @ExceptionHandler(AuthenticationException.class)
    public ResponseEntity handleAuthenticationException(AuthenticationException ex) {
        logger.error("Authentication exception: ", ex);
        return ResponseEntity
                .status(HttpStatus.UNAUTHORIZED)
                .body(ex.getMessage());
    }

    @ExceptionHandler(InternalServerException.class)
    public ResponseEntity handleInternalServerError(InternalServerException ex) {
        logger.error("Internal server error: ", ex);
        return ResponseEntity
                .status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body(ex.getMessage());
    }

    @ExceptionHandler(IllegalArgumentException.class)
    public ResponseEntity handleIllegalArgumentException(IllegalArgumentException ex) {
        logger.error("Illegal argument error: ", ex);
        return ResponseEntity
                .status(HttpStatus.BAD_REQUEST)
                .body(ex.getMessage());
    }

    @ExceptionHandler(EntityNotFoundException.class)
    public ResponseEntity handleEntityNotFoundException(EntityNotFoundException ex) {
        logger.error("Entity not found: ", ex);
        return ResponseEntity
                .status(HttpStatus.NOT_FOUND)
                .body(ex.getMessage());
    }

    @ExceptionHandler(UnauthorizedException.class)
    public ResponseEntity handleUnauthorizedExceptions(UnauthorizedException ex) {
        logger.error("Unauthorized exception: ", ex);
        return ResponseEntity
                .status(HttpStatus.UNAUTHORIZED)
                .body("Unauthorized: " + ex.getMessage());
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity handleOtherExceptions(Exception ex) {
        logger.error("Unexpected error occurred: ", ex);
        return ResponseEntity
                .status(HttpStatus.INTERNAL_SERVER_ERROR)
                .body("Unexpected error occurred");
    }
}