package messages

import (
	"forge.redroom.link/yves/meowlib"
	"forge.redroom.link/yves/meowlib/client"
	"google.golang.org/protobuf/proto"
)

// Step4InviteeFinalizesInitiator is called by the invitee when the step-3 answer
// (serialized Invitation bytes) arrives. It unmarshals the initiator's ContactCard and
// completes the invitee's peer entry with the initiator's real keys.
func Step4InviteeFinalizesInitiator(invitationBytes []byte) (*client.Peer, error) {
	var inv meowlib.Invitation
	if err := proto.Unmarshal(invitationBytes, &inv); err != nil {
		return nil, err
	}
	var initiatorCC meowlib.ContactCard
	if err := proto.Unmarshal(inv.Payload, &initiatorCC); err != nil {
		return nil, err
	}
	if initiatorCC.InvitationId == "" {
		initiatorCC.InvitationId = inv.Uuid
	}
	if err := client.GetConfig().GetIdentity().InvitationStep4(&initiatorCC); err != nil {
		return nil, err
	}
	client.GetConfig().GetIdentity().Save()
	peer := client.GetConfig().GetIdentity().Peers.GetFromInvitationId(initiatorCC.InvitationId)
	return peer, nil
}