package server

import (
	"net/http"

	"go.alanpearce.eu/x/log"
)

type LoggingResponseWriter struct {
	http.ResponseWriter
	statusCode int
}

func (lrw *LoggingResponseWriter) WriteHeader(code int) {
	lrw.statusCode = code
	// avoids warning: superfluous response.WriteHeader call
	if lrw.statusCode != http.StatusOK {
		lrw.ResponseWriter.WriteHeader(code)
	}
}

func NewLoggingResponseWriter(w http.ResponseWriter) *LoggingResponseWriter {
	return &LoggingResponseWriter{w, http.StatusOK}
}

func wrapHandlerWithLogging(wrappedHandler http.Handler, log *log.Logger) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		lw := NewLoggingResponseWriter(w)
		wrappedHandler.ServeHTTP(lw, r)
		if r.URL.Path == "/health" {
			return
		}
		log.Info(
			"http request",
			"method", r.Method,
			"status", lw.statusCode,
			"host", r.Host,
			"path", r.URL.Path,
			"location", lw.Header().Get("Location"),
		)
	})
}