package com.doumee.config.handler;

import com.doumee.core.constants.ResponseStatus;
import com.doumee.core.exception.BusinessException;
import com.doumee.core.model.ApiResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.shiro.authz.UnauthorizedException;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.ArrayList;
import java.util.List;

/**
 * 全局异常处理
 */
@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(BusinessException.class)
    public <T> ApiResponse<T> handleBusinessException(BusinessException e) {
        log.warn("BusinessException: {}", e.getMessage());
        return ApiResponse.failed(e.getCode(), e.getMessage());
    }

    @ExceptionHandler(UnauthorizedException.class)
    public <T> ApiResponse<T> handleUnauthorizedException(UnauthorizedException e) {
        log.error(e.getMessage(), e);
        return ApiResponse.failed("没有操作权限");
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    public <T> ApiResponse<T> handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
        log.error(e.getMessage(), e);
        BindingResult bindingResult = e.getBindingResult();
        List<String> errors = new ArrayList<>();
        for (FieldError fieldError : bindingResult.getFieldErrors()) {
            errors.add(fieldError.getDefaultMessage());
        }
        return ApiResponse.failed(ResponseStatus.BAD_REQUEST.getCode(), StringUtils.join(errors));
    }

    @ExceptionHandler(HttpMessageNotReadableException.class)
    public <T> ApiResponse<T> handleHttpMessageNotReadableException(HttpMessageNotReadableException e) {
        log.error(e.getMessage(), e);
        return ApiResponse.failed(ResponseStatus.BAD_REQUEST.getCode(), "请求参数格式错误");
    }

    @ExceptionHandler(Exception.class)
    public <T> ApiResponse<T> handleException(Exception e) {
        log.error(e.getMessage(), e);
        return ApiResponse.failed(ResponseStatus.SERVER_ERROR, e);
    }
}