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package ext
import (
"log/slog"
"net/http"
"time"
)
type statusWraper struct {
statusCode int
size int
innerWriter http.ResponseWriter
}
func (s *statusWraper) Header() http.Header {
return s.innerWriter.Header()
}
func (s *statusWraper) Write(b []byte) (int, error) {
s.size += len(b)
return s.innerWriter.Write(b)
}
func (s *statusWraper) WriteHeader(statusCode int) {
s.statusCode = statusCode
s.innerWriter.WriteHeader(statusCode)
}
func (s *statusWraper) StatusCode() int {
if s.statusCode == 0 {
return 200
}
return s.statusCode
}
func wrap(w http.ResponseWriter) *statusWraper {
return &statusWraper{
innerWriter: w,
}
}
func Log(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
t := time.Now()
s := wrap(w)
next(s, r)
encoding := s.Header().Get("Content-Encoding")
userAgent := r.Header.Get("User-Agent")
slog.Info(
"HTTP request",
"method", r.Method,
"code", s.StatusCode(),
"path", r.URL,
"encoding", encoding,
"user-agent", userAgent,
"elapsed", time.Since(t),
"body-size", s.size,
)
}
}
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