package middleware

import (
	"net/http"
	"time"

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

// LogMiddleware is an middleware to log requests to phuslu/log and catches panics
func LogMiddleware(c *gin.Context) {
	var xid log.XID
	var tmp interface{}
	var exists bool
	if tmp, exists = c.Get("xid"); !exists {
		xid = log.NewXIDWithTime(time.Now().UnixNano())
		c.Set("xid", xid)
	} else {
		xid = tmp.(log.XID)
	}
	defer func() {
		var entry = log.Info()
		int := recover()
		if int != nil {
			err := int.(error)
			c.Header("requestid", xid.String())
			c.AbortWithStatus(http.StatusInternalServerError)
			entry = log.Error().Err(err).Int("statuscode", 500)
		} else {
			statuscode := c.Writer.Status()
			if statuscode >= 400 {
				entry = log.Error()
			}
			entry = entry.Int("statuscode", statuscode)
		}
		entry.Int64("goroutine", log.Goid()).Xid("ID", xid).Msg("Request")
	}()
	c.Next()
}