package main

// API-слой — HTTP-хендлер и сервер.
// Собирает сервисы из всех доменов в единый HTTP-интерфейс.

import (
	"context"
	"fmt"
	"log/slog"
	"net"
	"net/http"

	"go.uber.org/fx"
)

var APIModule = fx.Module("api",
	fx.Provide(newHandler),
	fx.Invoke(startHTTPServer),
)

// --- Handler ---

type handler struct {
	userService         UserService
	authService         AuthService
	notificationService NotificationService
}

func newHandler(userService UserService, authService AuthService, notificationService NotificationService) *handler {
	return &handler{userService: userService, authService: authService, notificationService: notificationService}
}

func (h *handler) routes() http.Handler {
	mux := http.NewServeMux()
	mux.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
		w.WriteHeader(http.StatusOK)
		fmt.Fprintln(w, "ok")
	})
	return mux
}

// --- HTTP Server ---

func startHTTPServer(lc fx.Lifecycle, h *handler) {
	srv := &http.Server{
		Addr:    ":8080",
		Handler: h.routes(),
	}

	lc.Append(fx.Hook{
		OnStart: func(ctx context.Context) error {
			ln, err := net.Listen("tcp", srv.Addr)
			if err != nil {
				return err
			}
			slog.Info("HTTP-сервер запущен", "addr", srv.Addr)
			go srv.Serve(ln)
			return nil
		},
		OnStop: func(ctx context.Context) error {
			slog.Info("HTTP-сервер останавливается...")
			return srv.Shutdown(ctx)
		},
	})
}