app/image_utils.py

import tempfile
import random
import requests
import json
import logging
from PIL import Image
from huggingface_hub import HfApi
from cozepy import Coze, TokenAuth
import hashlib

from app.config import DATASET_ID, COZE_API_TOKEN, HUGGING_FACE_TOKEN

# 配置日志
logging.basicConfig(level=logging.INFO, format='%(asctime)s %(levelname)s %(message)s')
logger = logging.getLogger(__name__)

# 初始化API客户端
api = HfApi()
coze = Coze(auth=TokenAuth(token=COZE_API_TOKEN), base_url="https://api.coze.cn")


def calculate_image_hash(Image: Image.Image) -> str:
    """
    参数:
        Image
    返回:
        str: 图片的MD5哈希字符串
    """
    return hashlib.md5(Image.tobytes()).hexdigest()



def get_image_description(image_url: str) -> str:
    """获取图片描述"""
    logger.info(f"Get image description")
    workflow = coze.workflows.runs.create(
        workflow_id='7479742935953752091',
        parameters={
            "image_url": image_url
        }
    )
    logger.info(f"Image description: {workflow.data}")
    if (workflow.data):
        description = json.loads(workflow.data)['output']
        return description
    else:
        return ""

def save_image_temp(image: Image.Image) -> str:
    """保存图片到临时文件"""
    with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as temp_img:
        image.save(temp_img.name, "PNG")
        return temp_img.name


def upload_to_huggingface(temp_file_path: str) -> tuple:
    """上传图片到 HuggingFace"""
    image_filename = f"image_{random.randint(1000, 9999)}.png"
    file_path = f"images/{image_filename}"
    
    logger.info(f"Uploading image to HuggingFace: {file_path}")
    api.upload_file(
        path_or_fileobj=temp_file_path,
        path_in_repo=file_path,
        repo_id=DATASET_ID,
        token=HUGGING_FACE_TOKEN,
        repo_type="dataset"
    )
    logger.info(f"Image uploaded successfully: {file_path}")
    return file_path, image_filename


def get_image_cdn_url(file_path: str) -> str:
    """获取图片CDN URL"""
    image_url = f"https://huggingface.co/datasets/{DATASET_ID}/resolve/main/{file_path}"
    logger.info(f"Getting CDN URL for: {image_url}")
    
    response = requests.head(
        image_url, 
        allow_redirects=True,
        timeout=10,  
        headers={
            'User-Agent': 'NekoAI',
        }
    )
    image_cdn_url = response.url
    logger.info(f"CDN URL: {image_cdn_url}")
    return image_cdn_url


def format_image_url(file_path: str) -> str:
    """格式化图片URL，用于显示"""
    return f"https://huggingface.co/datasets/{DATASET_ID}/resolve/main/{file_path}"