import os
import requests
from typing import Optional


class ExternalFileUploader:
    def __init__(self):
        self.base_url = os.getenv("FILE_UPLOAD_API_URL")
        self.api_key = os.getenv("FILE_UPLOAD_API_KEY")

    def upload_file(self, file_bytes: bytes, file_name: str) -> Optional[str]:
        try:
            files = {
                "files": (file_name, file_bytes, "image/png")
            }

            headers = {
                "X-API-Key": self.api_key
            }

            response = requests.post(
                f"{self.base_url}/api/v1/files/bulk-upload",
                headers=headers,
                files=files,
                timeout=30
            )

            if response.status_code != 201:
                print("Upload failed:", response.text)
                return None

            data = response.json()

            # Expecting array response
            if not isinstance(data, list) or not data:
                return None

            first = data[0]

            if not first.get("success"):
                return None

            return first["data"]["file_url"]

        except Exception as e:
            print("Uploader error:", str(e))
            return None