package com.railway.framework.web.exception;

import com.railway.common.constant.HttpStatus;
import com.railway.common.core.domain.AjaxResult;
import com.railway.common.exception.DemoModeException;
import com.railway.common.exception.ServiceException;
import com.railway.common.utils.StringUtils;
import javax.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

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

  /**
   * 权限校验异常
   */
  @ExceptionHandler(AccessDeniedException.class)
  public AjaxResult handleAccessDeniedException(AccessDeniedException e,
      HttpServletRequest request) {
    String requestUri = request.getRequestURI();
    log.error("请求地址'{}',权限校验失败'{}'", requestUri, e.getMessage());
    return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
  }

  /**
   * 请求方式不支持
   */
  @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
  public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
      HttpServletRequest request) {
    String requestUri = request.getRequestURI();
    log.error("请求地址'{}',不支持'{}'请求", requestUri, e.getMethod());
    return AjaxResult.error(e.getMessage());
  }

  /**
   * 业务异常
   */
  @ExceptionHandler(ServiceException.class)
  public AjaxResult handleServiceException(ServiceException e, HttpServletRequest request) {
    log.error(e.getMessage(), e);
    Integer code = e.getCode();
    return StringUtils.isNotNull(code) ? AjaxResult.error(code, e.getMessage())
        : AjaxResult.error(e.getMessage());
  }

  /**
   * 拦截未知的运行时异常
   */
  @ExceptionHandler(RuntimeException.class)
  public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request) {
    String requestUri = request.getRequestURI();
    log.error("请求地址'{}',发生未知异常.", requestUri, e);
    return AjaxResult.error(e.getMessage());
  }

  /**
   * 系统异常
   */
  @ExceptionHandler(Exception.class)
  public AjaxResult handleException(Exception e, HttpServletRequest request) {
    String requestUri = request.getRequestURI();
    log.error("请求地址'{}',发生系统异常.", requestUri, e);
    return AjaxResult.error(e.getMessage());
  }

  /**
   * 自定义验证异常
   */
  @ExceptionHandler(BindException.class)
  public AjaxResult handleBindException(BindException e) {
    log.error(e.getMessage(), e);
    String message = e.getAllErrors().get(0).getDefaultMessage();
    return AjaxResult.error(message);
  }

  /**
   * 自定义验证异常
   */
  @ExceptionHandler(MethodArgumentNotValidException.class)
  public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
    log.error(e.getMessage(), e);
    String message = e.getBindingResult().getFieldError().getDefaultMessage();
    return AjaxResult.error(message);
  }

  /**
   * 演示模式异常
   */
  @ExceptionHandler(DemoModeException.class)
  public AjaxResult handleDemoModeException(DemoModeException e) {
    return AjaxResult.error("演示模式，不允许操作");
  }
}
