package server

import (
	"fmt"
	"net/http"
	"time"
)

// HTTP server configuration constants.
const (
	HTTPReadTimeout    = 30 * time.Second
	HTTPWriteTimeout   = 60 * time.Second
	HTTPMaxHeaderBytes = 8 << 10 // 8KB
)

func (s *Server) serveUntilShutdown() {
	listenAddr := fmt.Sprintf(":%d", s.config.Port)
	s.httpServer = &http.Server{
		Addr:           listenAddr,
		ReadTimeout:    HTTPReadTimeout,
		WriteTimeout:   HTTPWriteTimeout,
		MaxHeaderBytes: HTTPMaxHeaderBytes,
		Handler:        s,
	}

	s.SetupRoutes()

	s.log.Info("http begin listen", "listenaddr", listenAddr)
	if err := s.httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
		s.log.Error("listen error", "error", err)
		if s.cancelFunc != nil {
			s.cancelFunc()
		}
	}
}

// ServeHTTP implements http.Handler.
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	s.router.ServeHTTP(w, r)
}