Rate limits

import time
import random
import requests

def start_validation_with_retry(phone_number: str, api_key: str, max_retries: int = 5):
    url = "https://verify-api.smsmanager.com/v1/validations"
    headers = {"X-API-Key": api_key, "Content-Type": "application/json"}
    payload = {"phoneNumber": phone_number}

    for attempt in range(max_retries):
        response = requests.post(url, json=payload, headers=headers)

        if response.status_code == 200:
            return response.json()

        if response.status_code == 429:
            # Exponenciální backoff: 1s, 2s, 4s, 8s, 16s — plus náhodný jitter
            wait = (2 ** attempt) + random.uniform(0, 1)
            print(f"Rate limited. Retrying in {wait:.1f}s (attempt {attempt + 1}/{max_retries})")
            time.sleep(wait)
            continue

        # Pro chyby jiné než 429 ihned vyhod
        response.raise_for_status()

    raise Exception(f"Max retries exceeded for phone number {phone_number}")

async function startValidationWithRetry(phoneNumber, apiKey, maxRetries = 5) {
  const url = "https://verify-api.smsmanager.com/v1/validations";

  for (let attempt = 0; attempt < maxRetries; attempt++) {
    const response = await fetch(url, {
      method: "POST",
      headers: {
        "X-API-Key": apiKey,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({ phoneNumber }),
    });

    if (response.ok) {
      return await response.json();
    }

    if (response.status === 429) {
      // Exponenciální backoff: 1s, 2s, 4s, 8s, 16s — plus náhodný jitter
      const wait = (2 ** attempt + Math.random()) * 1000;
      console.log(`Rate limited. Retrying in ${(wait / 1000).toFixed(1)}s (attempt ${attempt + 1}/${maxRetries})`);
      await new Promise((resolve) => setTimeout(resolve, wait));
      continue;
    }

    // Pro chyby jiné než 429 vyhod ihned
    const error = await response.json().catch(() => ({}));
    throw new Error(`API error ${response.status}: ${error.message ?? "unknown"}`);
  }

  throw new Error(`Max retries exceeded for phone number ${phoneNumber}`);
}