package irc

import (
	"git.chromaticdragon.app/pyrex/minimal-irc-server/v2/src/transport"
)

type Globals struct {
	Server        *transport.Server
	Users         *UsersSystem
	Notifications *NotificationsSystem
}

var globals *Globals = nil

func InitializeGlobals(server *transport.Server) {
	globals = &Globals{
		Server:        server,
		Users:         NewUsersSystem(),
		Notifications: NewNotificationsSystem(),
	}
}

func GetGlobals() *Globals {
	if globals == nil {
		panic("globals not initialized")
	}
	return globals
}

func (g *Globals) getHandlers() []Handler {
	return []Handler{
		g.Users,
		g.Notifications,
	}
}

func Dispatch[T any](askPermission func(T) error, act func(T)) error {
	globals := GetGlobals()
	handlers := globals.getHandlers()

	for _, handler := range handlers {
		if h, ok := handler.(T); ok {
			err := askPermission(h)
			if err != nil {
				return err
			}
		}
	}
	for _, handler := range handlers {
		if h, ok := handler.(T); ok {
			act(h)
		}
	}
	return nil
}