package middleware

import (
	"go-nc/configs/global"
	"log"
	"net/http"
	"runtime/debug"

	"github.com/gin-gonic/gin"
)

func Recover(c *gin.Context) {
	defer func() {
		if r := recover(); r != nil {
			//打印错误堆栈信息
			log.Printf("panic: %v\n", r)
			global.App.Log.Error("panic: " + errorToString(r))
			debug.PrintStack()
			ErrorResponse(c, http.StatusInternalServerError, errorToString(r))
			//终止后续接口调用，不加的话recover到异常后，还会继续执行接口里后续代码
			c.Abort()
		}
	}()
	//加载完 defer recover，继续后续接口调用
	c.Next()
}

// recover错误，转string
func errorToString(r interface{}) string {
	switch v := r.(type) {
	case error:
		return v.Error()
	default:
		return r.(string)
	}
}