refactor invitation

client/invitation/files/step1.go

@@ -0,0 +1,30 @@
+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
+}