purchases-ios/Sources/Networking/RemoteConfigAPI.swift

//
//  RemoteConfigAPI.swift
//  RevenueCat
//
//  Created by Rick van der Linden on 27/05/2026.
//  Copyright © 2026 RevenueCat, Inc. All rights reserved.

import Foundation

class RemoteConfigAPI {

    typealias RemoteConfigResponseHandler = Backend.ResponseHandler<RemoteConfigFetchResult>

    private let callbackCache: CallbackCache<RemoteConfigCallback>
    private let backendConfig: BackendConfiguration

    init(backendConfig: BackendConfiguration) {
        self.backendConfig = backendConfig
        self.callbackCache = .init()
    }

    func getRemoteConfig(
        request: RemoteConfigRequest = .init(),
        isAppBackgrounded: Bool,
        completion: @escaping RemoteConfigResponseHandler
    ) {
        let factory = GetRemoteConfigOperation.createFactory(
            configuration: self.backendConfig,
            callbackCache: self.callbackCache,
            request: request
        )

        let callback = RemoteConfigCallback(cacheKey: factory.cacheKey, completion: completion)
        let cacheStatus = self.callbackCache.add(callback)

        self.backendConfig.addCacheableOperation(
            with: factory,
            delay: .default(forBackgroundedApp: isAppBackgrounded),
            cacheStatus: cacheStatus
        )
    }

}

struct RemoteConfigFetchResult {

    /// `nil` represents a successful `204 No Content` response. Malformed or undecodable
    /// container bytes should fail before this result is created.
    let container: RCContainer?
    let verificationResult: VerificationResult

    init(response: VerifiedHTTPResponse<RCContainer?>) {
        self.container = response.body
        self.verificationResult = response.verificationResult
    }

}