package com.sinata.appointment.common;

import cn.dev33.satoken.exception.NotLoginException;
import cn.dev33.satoken.exception.NotPermissionException;
import com.sinata.appointment.constants.HttpBizCode;
import com.sinata.appointment.exception.BizException;

import cn.dev33.satoken.exception.SaTokenException;
import jakarta.validation.ConstraintViolationException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(BizException.class)
    public Result<Void> handleBiz(BizException e) {
        return ResultUtil.error(e.getCode(), e.getMessage());
    }

    @ExceptionHandler({MethodArgumentNotValidException.class, ConstraintViolationException.class})
    public Result<Void> handleValidation(Exception e) {
        String msg =
                e instanceof MethodArgumentNotValidException mn
                        ? mn.getBindingResult().getFieldError() != null
                                ? mn.getBindingResult().getFieldError().getDefaultMessage()
                                : e.getMessage()
                        : e.getMessage();
        return ResultUtil.error(HttpBizCode.BAD_REQUEST, msg != null ? msg : "参数错误");
    }

    
    @ExceptionHandler(SaTokenException.class)
    public Result<Void> handleSaToken(SaTokenException e) {
        if (e instanceof NotPermissionException){
            log.warn("satoken forbidden: {}", safeMessage(e));
            return ResultUtil.error(HttpBizCode.FORBIDDEN, "无权限访问");
        }
        if (e instanceof NotLoginException notLogin
                && NotLoginException.KICK_OUT.equals(notLogin.getType())) {
            log.warn("satoken unauthorized: type={} message={}", notLogin.getType(), safeMessage(e));
            return ResultUtil.error(HttpBizCode.UNAUTHORIZED, "账号已被禁用，请重新登录");
        }
        if (e instanceof NotLoginException notLogin) {
            log.warn("satoken unauthorized: type={} message={}", notLogin.getType(), safeMessage(e));
            return ResultUtil.error(HttpBizCode.UNAUTHORIZED, "账号信息已过期，请重新登录");
        }
        log.warn("satoken error: {} message={}", e.getClass().getSimpleName(), safeMessage(e));
        return ResultUtil.error(HttpBizCode.UNAUTHORIZED, "账号信息已过期，请重新登录");
    }

    private String safeMessage(Exception e) {
        String message = e.getMessage();
        return message == null || message.isBlank() ? "-" : message;
    }

    @ExceptionHandler(Exception.class)
    public Result<Void> handleOther(Exception e) {
        log.error("Unhandled error", e);
        return ResultUtil.error(HttpBizCode.INTERNAL_ERROR, "系统繁忙，请稍后重试");
    }
}