package com.fd.controller;

import com.fd.util.R;
import org.apache.shiro.ShiroException;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authz.UnauthorizedException;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;

/**
 * 统一捕捉异常，自定义返回参数
 * 这里只可以捕获controller层的异常。
 */
@RestControllerAdvice
public class ExceptionController {

    // 捕捉shiro的异常
    @ResponseStatus(HttpStatus.UNAUTHORIZED)
    @ExceptionHandler(ShiroException.class)
    public R handle401(ShiroException e) {
        return new R(40002, e.getMessage());
    }

    // 捕捉UnauthorizedException
    @ResponseStatus(HttpStatus.UNAUTHORIZED)
    @ExceptionHandler(UnauthorizedException.class)
    public R handle401() {
        return new R(40003, "Unauthorized");
    }

    // 捕捉其他所有异常
    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public R globalException(HttpServletRequest request, Throwable ex) {
        return new R(getStatus(request).value(), ex.getMessage());
    }



    private HttpStatus getStatus(HttpServletRequest request) {
        Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
        if (statusCode == null) {
            return HttpStatus.INTERNAL_SERVER_ERROR;
        }
        return HttpStatus.valueOf(statusCode);
    }


//    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
//    @ExceptionHandler(AuthenticationException.class)
//    public R handle40001() {
//        System.out.println("3333");
//        return new R(40005, "token1111 invalid");
//    }


}