{
  "request_id": "123456789",
  "log_id": "987654321",
  "error_code": 0,
  "error_msg": "",
  "error_detail": {
    "status_code": 200,
    "code": "",
    "code_message": "",
    "message": ""
  },
  "result": {
    "face_num": 1,
    "face_info": [
      {
        "face_rect": {
          "left": 100,
          "top": 50,
          "width": 200,
          "height": 250
        },
        "face_angle": {
          "yaw": 5.2,
          "pitch": -2.1,
          "roll": 1.8
        },
        "face_proportion": 0.35
      }
    ]
  }
}

{
  "request_id": "123456789",
  "log_id": "987654321",
  "error_code": 422,
  "error_msg": "No face detected in the file",
  "error_detail": {
    "status_code": 422,
    "code": "ERROR_NO_FACE_IN_FILE",
    "code_message": "No face detected in the file",
    "message": "pic not has face"
  }
}

// 检查人脸数量
if (result.result.face_num === 0) {
  throw new Error('未检测到人脸');
} else if (result.result.face_num > 1) {
  throw new Error('检测到多个人脸，请使用单人照片');
}

// 检查人脸占比
const faceInfo = result.result.face_info[0];
const faceProportion = faceInfo.face_proportion;

if (faceProportion < 0.2) {
  throw new Error('人脸占比过小，请使用更近的照片');
} else if (faceProportion > 0.8) {
  throw new Error('人脸占比过大，请使用更远的照片');
}

// 检查人脸角度
const { yaw, pitch, roll } = faceInfo.face_angle;

if (Math.abs(yaw) > 45 || Math.abs(pitch) > 30 || Math.abs(roll) > 30) {
  throw new Error('人脸角度过大，请使用正面照片');
}

async function validateImage(imageFile) {
  // 1. 调用人脸分析 API
  const analysisResult = await analyzeFace(imageFile);
  
  // 2. 检查人脸数量
  if (analysisResult.face_num !== 1) {
    throw new Error('请使用包含且仅包含一个人脸的照片');
  }
  
  // 3. 检查人脸占比
  const faceInfo = analysisResult.face_info[0];
  if (faceInfo.face_proportion < 0.2 || faceInfo.face_proportion > 0.8) {
    throw new Error('人脸占比应在20%-80%之间');
  }
  
  // 4. 检查人脸角度
  const { yaw, pitch, roll } = faceInfo.face_angle;
  if (Math.abs(yaw) > 45 || Math.abs(pitch) > 30 || Math.abs(roll) > 30) {
    throw new Error('请使用正面照片，人脸角度不应过大');
  }
  
  return true;
}