How to use FirebaseRemoteConfig with Codable protocol?

[FlorinDMass]

Hello !
I'm trying to make my code look better and safer and I found out there is a Swift Implementation of Codable Protocol for RemoteConfig here : https://github.com/firebase/firebase-ios-sdk/blob/main/FirebaseRemoteConfig/Swift/Codable.swift
I'm using Swift Package to add the dependencies in my project.
Now the issue is the I can't manage to use that function :
import FirebaseRemoteConfig
import Firebase
var remoteConfig = RemoteConfig.remoteConfig()
remoteConfig.decoded(asType: MyRemoteConfigDTO.self)
And e get :
Value of type 'RemoteConfig' has no member 'decoded'

Now I tried to import FirebaseRemoteConfigSwift but no luck, package not found.

Any idea how to do this ?

Thanks

[peterfriese]

I've explained this in this video: https://www.youtube.com/shorts/NhKQBpedL-o

Here's the code

struct ShadowConfiguration: Codable {
  var colorValue: String
  var offsetX: CGFloat
  var offsetY: CGFloat
  var radius: CGFloat

  var color: Color { Color(hex: colorValue) }
}

struct FavouriteNumberView: View {
  @StateObject var viewModel = ViewModel()

  let rc = RemoteConfig.remoteConfig()

  @RemoteConfigProperty(key: "cardShadow",
                        fallback: .default)
  var cardShadow: ShadowConfiguration

  var body: some View {
    VStack {
      Text("What's your favourite number?")
      // ...
    }
    .clipShape(RoundedRectangle(cornerRadius: 16))
    .shadow(color: cardShadow.color,
            radius: cardShadow.radius,
            x: cardShadow.offsetX,
            y: cardShadow.offsetY)
    .onAppear {
      rc.addOnConfigUpdateListener { _, _ in
        rc.activate()
      }
    }
  }
}

[FlorinDMass]

Thanks for answering @peterfriese,

It's helpful but is my case I was looking for something to decode the whole config at once without specifying the key value and take use of Codable protocol .
Example:

struct RemoteConfigDTO: Codable {
let remoteConfigValue1: String
let remoteConfigValue2: Int
...
}
let remoteConfigData = RemoteConfig.remoteConfig().dataValue
let remoteConfigDTO = JSONDecoder().decode(RemoteConfigDTO.self, from: remoteConfigData)

Thanks,
Florin

[peterfriese]

You're close! The tests for RemoteConfig contain a couple of samples that show how you can use Codable:

This is how to fetch without Codable:

func testFetchAndActivateWithoutCodable() async throws {
  let status = try await config.fetchAndActivate()
  XCTAssertEqual(status, .successFetchedFromRemote)
  let dict = try XCTUnwrap(config[Constants.jsonKey].jsonValue as? [String: AnyHashable])
  XCTAssertEqual(dict["recipeName"], "PB&J")
  XCTAssertEqual(dict["ingredients"], ["bread", "peanut butter", "jelly"])
  XCTAssertEqual(dict["cookTime"], 7)
  XCTAssertEqual(
    config[Constants.jsonKey].jsonValue as! [String: AnyHashable],
    Constants.jsonValue
  )
}

With Codable, this becomes:

struct Recipe: Decodable {
  var recipeName: String
  var ingredients: [String]
  var cookTime: Int
}

func testFetchAndActivateWithCodable() async throws {
  let status = try await config.fetchAndActivate()
  XCTAssertEqual(status, .successFetchedFromRemote)
  let recipe = try XCTUnwrap(config[Constants.jsonKey].decoded(asType: Recipe.self))
  XCTAssertEqual(recipe.recipeName, "PB&J")
  XCTAssertEqual(recipe.ingredients, ["bread", "peanut butter", "jelly"])
  XCTAssertEqual(recipe.cookTime, 7)
}

Here is the essential line of code for easier legibility:

config["myconfigkey"].decoded(asType: Recipe.self)

[peterfriese]

@FlorinDMass - I've updated our docs accordingly: https://firebase.google.com/docs/remote-config/get-started?platform=ios

[FlorinDMass]

Thanks @peterfriese ,
I updated my Firebase Deps to 11.7.0 and now .decoded appears.
If possible in the future maybe an optional JSONDecoder parameter can be passed in this function to specify the strategy on how to decode Date, Data, etc.. objects will be really useful.
Thanks,
Florin

[peterfriese]

Thanks @peterfriese , I updated my Firebase Deps to 11.7.0 and now .decoded appears. If possible in the future maybe an optional JSONDecoder parameter can be passed in this function to specify the strategy on how to decode Date, Data, etc.. objects will be really useful. Thanks, Florin

Can you open a feature request for this? Feel free to provide a code snippet to show how you'd want to use this/