package middleware

import (
	"net/http"
	"strconv"
	"time"

	"spend-sparrow/log"

	"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promauto"
)

var (
	metrics = promauto.NewCounterVec(
		prometheus.CounterOpts{
			Name: "mefit_request_total",
			Help: "The total number of requests processed",
		},
		[]string{"path", "method", "status"},
	)
)

type WrappedWriter struct {
	http.ResponseWriter
	StatusCode int
}

func (w *WrappedWriter) WriteHeader(code int) {
	w.StatusCode = code
	w.ResponseWriter.WriteHeader(code)
}

func Log(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		start := time.Now()

		wrapped := &WrappedWriter{
			ResponseWriter: w,
			StatusCode:     http.StatusOK,
		}
		next.ServeHTTP(wrapped, r)

		log.Info(r.RemoteAddr + " " + strconv.Itoa(wrapped.StatusCode) + " " + r.Method + " " + r.URL.Path + " " + time.Since(start).String())
		metrics.WithLabelValues(r.URL.Path, r.Method, http.StatusText(wrapped.StatusCode)).Inc()
	})
}