Adding nested struct to Firestore - firebase

Question

I am trying to add a nested struct to Firestore and for some reason the contents added are all non-structs, which look something like:
The structs look something like this:
type Status struct {
Title string `json:"title,omitempty" firestore:"title,omitempty"`
Message string `json:"message,omitempty" firestore:"title,omitempty"`
}
type Config struct {
Name string `json:"name,omitempty" firestore:"name,omitempty"`
Status Status `json:"status,omitempty" firestore:"status,omitempty"`
}
And the code looks something like this:
import (
"context"
firebase "firebase.google.com/go/v4"
"google.golang.org/api/option"
)
func main() {
configuration := Config{
Name: "Test",
Status: Status{
Title: "hello",
Message: "hi",
},
}
ctx := context.Background()
config := firebase.Config{
ProjectID: "",
StorageBucket: "",
}
opt := option.WithCredentialsFile("firebase_config.json")
app, err := firebase.NewApp(ctx, &config, opt)
if err != nil {
panic(err)
}
// Get an auth client from the firebase.App
client, err := app.Firestore(ctx)
if err != nil {
panic(err)
}
_, _, err = client.Collection("forecast").Add(ctx, configuration)
if err != nil {
panic(err)
}
}
The above code only works for elements that are not in the nested structure.
Any help on this would be appreciated
Update 1
Status is not a sub collection but an object, something like:
{
"name": "Test",
"status": {
"title": "hello",
"message": "hi"
}
}

Answer 1

Firestore is optimized as a hash entry and retrieval datastore. As a consequence, it's better to create maps out of your structs. Structs are good for Go data modeling but when it's time to submit to the database, convert it to a map.
I usually just use Fatih's struct to map converter
It makes it easy to reason about your data on the Go side and still be able to submit it for storage.

Answer 2

Posting this as Community Wiki answer, based in the discussion of the comments.
The solution for this case seems to be adding values manually in a field of type Map. The steps to achieve that are the following: Access the Firebase console -> Firestore -> Create a document -> Add field of type Map. Following this order it's possible to create a field of type Map, that has the format needed to add data as described in the description of the question.
More information about this type, how it works, sort options, etc., can be found in the official documentation here: Supported data types.