/*
 * Copyright 2025 Google. This software is provided as-is, without warranty or representation for any use or purpose.
 * Your use of it is subject to your agreement with Google.
 */

package com.example.exception;

import java.util.HashMap;
import java.util.Map;
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(DialogflowClientException.class)
    public ResponseEntity<Map<String, String>> handleDialogflowClientException(
            DialogflowClientException ex) { 
        Map<String, String> error = new HashMap<>();
        error.put("error", "Error communicating with Dialogflow");
        error.put("message", ex.getMessage());
        logger.error("DialogflowClientException: {}", ex.getMessage());
        return new ResponseEntity<>(error, HttpStatus.SERVICE_UNAVAILABLE);
    }

    @ExceptionHandler(GeminiClientException.class)
    public ResponseEntity<Map<String, String>> handleGeminiClientException(GeminiClientException ex) {
        Map<String, String> error = new HashMap<>();
        error.put("error", "Error communicating with Gemini");
        error.put("message", ex.getMessage());
        logger.error("GeminiClientException: {}", ex.getMessage());
        return new ResponseEntity<>(error, HttpStatus.SERVICE_UNAVAILABLE);
    }

    @ExceptionHandler(Exception.class)
    public ResponseEntity<Map<String, String>> handleAllExceptions(Exception ex) {
        Map<String, String> error = new HashMap<>();
        error.put("error", "Internal Server Error");
        error.put("message", ex.getMessage());
        logger.error("An unexpected error occurred: {}", ex.getMessage(), ex);
        return new ResponseEntity<>(error, HttpStatus.INTERNAL_SERVER_ERROR);
    }
}