package core

import (
	"gno.land/p/aib/ibc/app"
	"gno.land/p/aib/ibc/host"
	"gno.land/p/nt/ufmt/v0"
)

// RegisterApp registers an IBCApp, the portID is determined using the package
// path of the caller, hence it must an other realm.
func RegisterApp(cur realm, portID string, app app.IBCApp) {
	caller := cur.Previous()
	if caller.IsUser() {
		panic("RegisterApp can only be called from an other realm")
	}
	if err := host.PortIdentifierValidator(portID); err != nil {
		panic(ufmt.Errorf("invalid portID: %v", err))
	}
	if _, ok := store.routes[portID]; ok {
		panic(ufmt.Errorf("portID %s has already been registered", portID))
	}
	store.routes[portID] = ibcApp{
		IBCApp:  app,
		pkgPath: caller.PkgPath(),
		address: caller.Address(),
	}
}