package com.cl.common.handler;



import com.cl.common.constant.MessageConstant;
import com.cl.common.exception.BaseException;
import com.cl.common.exception.user.InterceptorException;
import com.cl.common.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {


    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }

    /**
     * 捕获业务异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result loginHandler(InterceptorException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(401,ex.getMessage());
    }


    /**
     * 数据校验异常
     * @param e
     * @return
     */
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public Result errorHandler(MethodArgumentNotValidException e){
//        BindingResult bindingResult=exception.getBindingResult();
        String message="";
//        String message=bindingResult.getAllErrors().stream().map(DefaultMessageSourceResolvable::getDefaultMessage).collect(Collectors.joining());
//        for(ObjectError s:e.getAllErrors()){
//            message+=s.getDefaultMessage();
//            break;
//        }
        message= String.valueOf(e.getAllErrors().get(0).getDefaultMessage());

        log.info("数据校验错误：{}",message);
        return Result.error(message);
    }

    /**
     * 处理sql异常
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(SQLIntegrityConstraintViolationException ex){

        //Duplicate entry 'zhangsan' for key 'idx_username'
        String message = ex.getMessage();
        if (message.contains("Duplicate entry")){
            String[] split = message.split(" ");
            String username=split[2];
            String msg=username+ MessageConstant.ALREADY_EXISTS;
            return Result.error(msg);
        }else {
            log.error(message,ex);
            return Result.error(MessageConstant.UNKNOWN_ERROR);
        }

    }




}