Hello. I try to translate a text using Cloud Translate API when user's current languages are neither Japanese nor english, due to concerns about API usage.
However I don't know how to call API only when the condition is met.
[What I want to do]
The texts are fetched from Firebase, and texts have two values: Japanese and English.
If user's current language is Japanese or English, to set the text from database (Japanese or English).
If user's current language is neither Japanese nor English, call the API and return the translated value.
[Problem]
API Call which is set for the text field, is called even when the user's language is Japanese or English. ( It incurs a cost.)
I try to use custom function for calling the API only when the condition is met, but it seems that I cannot use "async*' methods" in custom function, so it couldn't work.
Is there any way to call API only when the condition is met?
