package middleware

import (
	"net/http"
	"strings"
	"time"

	"floorvisualizer/internal/logger"
)

type responseWriter struct {
	http.ResponseWriter
	statusCode  int
	wroteHeader bool
}

func (rw *responseWriter) WriteHeader(code int) {
	if !rw.wroteHeader {
		rw.statusCode = code
		rw.wroteHeader = true
	}
	rw.ResponseWriter.WriteHeader(code)
}

func (rw *responseWriter) Write(b []byte) (int, error) {
	if !rw.wroteHeader {
		rw.statusCode = http.StatusOK
		rw.wroteHeader = true
	}
	return rw.ResponseWriter.Write(b)
}

// Logging wraps an http.Handler with access logging, like Fiber's requestLogMiddleware.
// Format: METHOD /path 200 1.234ms
func Logging(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		start := time.Now()
		rw := &responseWriter{ResponseWriter: w, statusCode: http.StatusOK}
		next.ServeHTTP(rw, r)
		// Skip logging for polling endpoints to keep logs clean
		if strings.HasPrefix(r.URL.Path, "/floor/status") {
			return
		}
		logger.Info("%s %s %d %s", r.Method, r.URL.Path, rw.statusCode, time.Since(start))
	})
}