//
// recover_log.go
// Copyright (C) 2022 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//

package middleware

import (
	"net"
	"net/http"
	"net/http/httputil"
	"os"
	"strings"

	"git.hexq.cn/tiglog/golib/helper"
	"git.hexq.cn/tiglog/golib/logger"
	"github.com/gin-gonic/gin"
)

func GinRecover() gin.HandlerFunc {
	var log = logger.Recover()
	return func(c *gin.Context) {
		defer func() {
			if err := recover(); err != nil {
				// Check for a broken connection, as it is not really a
				// condition that warrants a panic stack trace.
				var brokenPipe bool
				if ne, ok := err.(*net.OpError); ok {
					if se, ok := ne.Err.(*os.SyscallError); ok {
						if strings.Contains(strings.ToLower(se.Error()), "broken pipe") ||
							strings.Contains(strings.ToLower(se.Error()), "connection reset by peer") {
							brokenPipe = true
						}
					}
				}

				httpRequest, _ := httputil.DumpRequest(c.Request, false)
				if brokenPipe {
					log.Error().Err(err.(error)).Str("request", string(httpRequest)).
						Msg(c.Request.URL.Path)
					// If the connection is dead, we can't write a status to it.
					c.Error(err.(error)) // nolint: errcheck
					c.Abort()
					return
				}
				var er = err.(error)
				log.Error().Str("request", string(httpRequest)).
					Err(helper.WrapErr(er, "wrap")).Msg("Recovery from panic")
				c.AbortWithError(http.StatusInternalServerError, er)
			}
		}()
		c.Next()
	}

}