How to get data from call cloud functions using swift app? - swift

Question

Now I'm developing cloud functions.
Please teach me how to get data from call cloud functions using swift app.
I use TypeScript in cloud functions as backend service.
import * as functions from "firebase-functions"
import * as admin from "firebase-admin"
admin.initializeApp(functions.config().firebase)
export const helloWorld = functions
.https.onCall((data: any, context: any) => {
functions.logger.info("Hello logs!", { structuredData: true })
return { result: "Hello World" }
})
And in frontend I use swift.
func callCloudfunction(){
functions.httpsCallable("helloWorld").call(["name": "taro"]) { (result, error) in
if let error = error as NSError? {
if error.domain == FunctionsErrorDomain {
let code = FunctionsErrorCode(rawValue: error.code)
let message = error.localizedDescription
let details = error.userInfo[FunctionsErrorDetailsKey]
print(message)
}
}
if let data = (result?.data as? [String: Any]), let text = data["result"] as? String {
print("SUCCESS: \(text)")
}
}
}
In Swift I think functions.httpsCallable("helloWorld").call(["name": "taro"]) method is like http post request. So in TypeScript I can get the name's data using data argument.
But I don't know how to get result data from TypeScript. In TypeScript I created json { result: "Hello World" }.
How do I fix the process in swift? I think this code below is not good.
if let data = (result?.data as? [String: Any]), let text = data["result"] as? String {
print("SUCCESS: \(text)")
}
And please tell me how to handle error process.
Some class and property in error handling are already deprecated .FunctionsErrorDomain and FunctionsErrorDetailsKey.
Please teach me how to handle getting data and handle error process.
Thank you.