Коды ошибок

┌─────────────────────────────────────────────────────────────┐
│                      API Request Flow                        │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  POST /generateTask/{model}                                 │
│         │                                                   │
│         ├── Fail ──→ HTTP Status Code (400/401/429...)      │
│         │           Request rejected immediately             │
│         │                                                   │
│         └── Success ──→ 200 + taskId                        │
│                        Request accepted, task processing    │
│                             │                               │
│                             ▼                               │
│  GET /statusTask/{model}?taskId=xxx                         │
│         │                                                   │
│         ├── state: success ──→ resultUrls                   │
│         │                                                   │
│         └── state: failed ──→ Task Failure Code             │
│                               (failCode/failMsg)             │
│                                                             │
└─────────────────────────────────────────────────────────────┘

{
  "code": 200,
  "message": "success",
  "data": {
    "state": "failed",
    "failCode": "SensitiveContentDetected",
    "failMsg": "Your content was flagged by OpenAI as violating content policies."
  }
}

{
  "code": 400,
  "message": "Prompt exceeds provider limit (max 2000 chars)",
  "data": null
}

{
  "code": 401,
  "message": "Invalid or missing API key",
  "data": null
}

{
  "code": 429,
  "message": "Provider rate limited, please retry later",
  "data": null
}

{
  "code": 504,
  "message": "Provider timeout, please retry later",
  "data": null
}

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "SensitiveContentDetected",
    "failMsg": "Your content was flagged by OpenAI as violating content policies.",
    "createTime": 1767965610929,
    "completeTime": 1767965652317
  }
}

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "NSFW",
    "failMsg": "NSFW, Try different input please.",
    "createTime": 1767965610929,
    "completeTime": 1767965652317
  }
}

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "ImageFormatIncorrect",
    "failMsg": "Image format is incorrect",
    "createTime": 1767965610929,
    "completeTime": 1767965652317
  }
}

async function retryWithBackoff(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (error.code === 429 || error.code >= 500) {
        const delay = Math.pow(2, i) * 1000; // 1s, 2s, 4s
        await new Promise(resolve => setTimeout(resolve, delay));
      } else {
        throw error;
      }
    }
  }
  throw new Error('Max retries exceeded');
}