import io
import logging
from io import BytesIO
import urllib3
from PIL import Image
from minio import Minio, S3Error

from src.core.config import settings

minio_client = Minio(settings.MINIO_URL, access_key=settings.MINIO_ACCESS, secret_key=settings.MINIO_SECRET, secure=settings.MINIO_SECURE)


# 自定义 Retry 类
class CustomRetry(urllib3.Retry):
    def increment(self, method=None, url=None, response=None, error=None, **kwargs):
        # 调用父类的 increment 方法
        new_retry = super(CustomRetry, self).increment(method, url, response, error, **kwargs)
        # 打印重试信息
        logger.info(f"重试连接: {method} {url}，错误: {error}，重试次数: {self.total - new_retry.total}")
        return new_retry


logger = logging.getLogger()
timeout = urllib3.Timeout(connect=1, read=10.0)  # 连接超时 5 秒，读取超时 10 秒
http_client = urllib3.PoolManager(
    num_pools=10,  # 设置连接池大小
    maxsize=10,
    timeout=timeout,
    cert_reqs='CERT_REQUIRED',  # 需要证书验证
    retries=CustomRetry(
        total=5,
        backoff_factor=0.2,
        status_forcelist=[500, 502, 503, 504],
    ),
)


#  获取图片
def oss_get_image(oss_client, bucket, object_name):
    # cv2 默认全通道读取
    image_object = None
    try:
        image_data = oss_client.get_object(bucket_name=bucket, object_name=object_name)
        data_bytes = BytesIO(image_data.read())
        image_object = Image.open(data_bytes)
    except Exception as e:
        logger.warning(f" | 获取图片出现异常 ######: {e}")
    return image_object


def oss_upload_image(oss_client, bucket, object_name, image_bytes):
    req = None
    try:
        req = oss_client.put_object(bucket_name=bucket, object_name=object_name, data=io.BytesIO(image_bytes), length=len(image_bytes), content_type='image/png')
    except Exception as e:
        logger.warning(f" | 上传图片出现异常 ######: {e}")
    return req


def oss_upload_image_file(oss_client, bucket, object_name, file_path):
    req = None
    try:
        req = oss_client.fput_object(
            bucket_name=bucket,
            object_name=object_name,
            file_path=file_path
        )
    except Exception as e:
        logger.warning(f" | 上传图片出现异常 ######: {e}")
    return req


def get_presigned_url(oss_client, bucket, object_name):
    try:
        presigned_url = oss_client.get_presigned_url(
            "GET",
            bucket_name=bucket,
            object_name=object_name,
        )
        return presigned_url
    except Exception as e:
        print(f"get_presigned_url exception :{e}")
        return None


def is_minio_file_exist(oss_client: Minio, bucket_name: str, object_name: str) -> bool:
    try:
        # 核心判断：检查MinIO中指定bucket+object是否存在
        oss_client.stat_object(bucket_name, object_name)
        return True
    except Exception as e:
        return False


def load_minio_file_to_state(oss_client, bucket: str, object_name: str, display_filename: str = None):
    try:
        # 下載 object 成 bytes
        response = oss_client.get_object(
            bucket_name=bucket,
            object_name=object_name,
        )
        data_bytes = response.read()
        response.close()
        response.release_conn()

        # 決定在 agent 裡顯示的檔名（可覆寫，避免洩漏真實 object name）
        filename = display_filename or object_name.split("/")[-1]

        # 回傳適合塞進 state["files"] 的格式
        return {filename: data_bytes}

    except S3Error as err:
        raise ValueError(f"MinIO 下載失敗: {err}")


if __name__ == '__main__':
    url = 'fida-test/furniture/sketches/1b82b2db-8019-4796-b2cc-11fb24c7799d.png'
    read_type = "2"
    img = oss_get_image(oss_client=minio_client, bucket=url.split('/')[0], object_name=url[url.find('/') + 1:])
    img.show()
    img.save("result.png")
    # get_presigned_url(oss_client=minio_client, bucket="fida-test", object_name="furniture/sketches/07bf4cfe-4502-4821-b78f-7727bf409498.png")
#