无法使用 Firebase 托管 API 创建自定义域

Question

I'm trying to automate custom domain creation process in Firebase Hosting, I am using Go library, but it doesn't work, I am also happy to know about plain REST alternative. I always get this error:

googleapi: Error 400: Domain test1.example.com not associated with project, failedPrecondition exit status 1

firebase, _ := firebasehosting.NewService(context.Background())

domain := &firebasehosting.Domain{
    DomainName: "test1.example.com",
    Site:       "dashboard-v1-staging",
}

createCall := firebase.Projects.Sites.Domains.Create("projects/ID/sites/ID", domain)
_, err = createCall.Do()
if err != nil && !googleapi.IsNotModified(err) {
    log.Println(err)
    os.Exit(1)
}

Answer 1

I found out that API can't do that yet, and Firebase team is working on that. It was confirmed in the ticket I submitted on Github - https://github.com/googleapis/google-api-go-client/issues/1798