package files

import (
	"os"

	"forge.redroom.link/yves/meowlib/client"
	"forge.redroom.link/yves/meowlib/client/invitation/messages"
)

// Step1Write creates a pending peer and writes the InvitationInitPayload to a file.
// format: "qr" writes a QR-code PNG; anything else writes a compressed binary .mwiv file.
func Step1Write(contactName string, myNickname string, invitationMessage string, serverUids []string, format string) (*client.Peer, error) {
	payload, peer, err := messages.Step1InitiatorCreatesInviteeAndTempKey(contactName, myNickname, invitationMessage, serverUids)
	if err != nil {
		return nil, err
	}
	c := client.GetConfig()
	if format == "qr" {
		filename := c.StoragePath + string(os.PathSeparator) + peer.MyName + "-" + peer.Name + ".png"
		if err := payload.WriteQr(filename); err != nil {
			return nil, err
		}
	} else {
		filename := c.StoragePath + string(os.PathSeparator) + peer.MyName + "-" + peer.Name + ".mwiv"
		if err := payload.WriteCompressed(filename); err != nil {
			return nil, err
		}
	}
	return peer, nil
}