package com.wecom.robot.config;

import com.wecom.robot.dto.ApiResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.util.stream.Collectors;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ApiResponse<Void> handleValidationException(MethodArgumentNotValidException ex) {
        String message = ex.getBindingResult().getFieldErrors().stream()
                .map(FieldError::getDefaultMessage)
                .collect(Collectors.joining("; "));
        log.warn("参数校验失败: {}", message);
        return ApiResponse.error(400, message);
    }

    @ExceptionHandler(ConstraintViolationException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ApiResponse<Void> handleConstraintViolationException(ConstraintViolationException ex) {
        String message = ex.getConstraintViolations().stream()
                .map(ConstraintViolation::getMessage)
                .collect(Collectors.joining("; "));
        log.warn("约束校验失败: {}", message);
        return ApiResponse.error(400, message);
    }

    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ApiResponse<Void> handleException(Exception ex) {
        log.error("服务器内部错误", ex);
        return ApiResponse.error(500, "服务器内部错误");
    }
}