func claimRewards(userId: String) async throws -> ClaimResponse {
    let url = URL(string: "https://yejzycmzbcwjsapmkwrq.supabase.co/functions/v1/referrer-claim")!
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.setValue(apiKey, forHTTPHeaderField: "x-api-key")
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    
    let body = ["uid": userId]
    request.httpBody = try JSONEncoder().encode(body)
    
    let (data, _) = try await URLSession.shared.data(for: request)
    return try JSONDecoder().decode(ClaimResponse.self, from: data)
}

// Display claimed rewards
func showClaimedRewards(_ response: ClaimResponse) {
    let alert = UIAlertController(
        title: "🎉 Rewards Claimed!",
        message: response.message,
        preferredStyle: .alert
    )
    
    for reward in response.claimed_rewards {
        alert.addAction(UIAlertAction(title: "Copy \(reward.code)", style: .default) { _ in
            UIPasteboard.general.string = reward.code
            UIApplication.shared.open(URL(string: reward.store_url)!)
        })
    }
    
    alert.addAction(UIAlertAction(title: "Done", style: .cancel))
    present(alert, animated: true)
}

suspend fun claimRewards(userId: String): ClaimResponse {
    val client = OkHttpClient()
    val json = JSONObject().put("uid", userId)
    
    val request = Request.Builder()
        .url("https://yejzycmzbcwjsapmkwrq.supabase.co/functions/v1/referrer-claim")
        .post(json.toString().toRequestBody("application/json".toMediaType()))
        .addHeader("x-api-key", apiKey)
        .build()
    
    val response = client.newCall(request).execute()
    return Gson().fromJson(response.body?.string(), ClaimResponse::class.java)
}

// Display claimed rewards
fun showClaimedRewards(response: ClaimResponse) {
    val dialog = AlertDialog.Builder(context)
        .setTitle("🎉 Rewards Claimed!")
        .setMessage(response.message)
    
    response.claimed_rewards.forEach { reward ->
        dialog.setPositiveButton("Copy ${reward.code}") { _, _ ->
            val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
            clipboard.setPrimaryClip(ClipData.newPlainText("Reward Code", reward.code))
            startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(reward.store_url)))
        }
    }
    
    dialog.show()
}