// Package api provides HTTP handlers and middleware for the Silo API.
package api

import (
	"net/http"
	"time"

	"github.com/go-chi/chi/v5/middleware"
	"github.com/rs/zerolog"
)

// RequestLogger returns a middleware that logs HTTP requests using zerolog.
func RequestLogger(logger zerolog.Logger) func(next http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			start := time.Now()
			ww := middleware.NewWrapResponseWriter(w, r.ProtoMajor)

			defer func() {
				logger.Info().
					Str("method", r.Method).
					Str("path", r.URL.Path).
					Str("query", r.URL.RawQuery).
					Int("status", ww.Status()).
					Int("bytes", ww.BytesWritten()).
					Dur("duration", time.Since(start)).
					Str("remote", r.RemoteAddr).
					Str("user_agent", r.UserAgent()).
					Msg("request")
			}()

			next.ServeHTTP(ww, r)
		})
	}
}

// Recoverer returns a middleware that recovers from panics and logs them.
func Recoverer(logger zerolog.Logger) func(next http.Handler) http.Handler {
	return func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			defer func() {
				if rec := recover(); rec != nil {
					logger.Error().
						Interface("panic", rec).
						Str("method", r.Method).
						Str("path", r.URL.Path).
						Msg("panic recovered")

					http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
				}
			}()

			next.ServeHTTP(w, r)
		})
	}
}