package ext

import (
	"log/slog"
	"net/http"
	"time"
)

type statusWraper struct {
	statusCode  int
	innerWriter http.ResponseWriter
}

func (s *statusWraper) Header() http.Header {
	return s.innerWriter.Header()
}

func (s *statusWraper) Write(b []byte) (int, error) {
	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)
		slog.Info(
			"Http request",
			"method", r.Method,
			"code", s.StatusCode(),
			"path", r.URL,
			"elapsed", time.Since(t),
		)
	}
}