import re
from markdownify import markdownify
from smolagents import Tool

class DownloadTaskAttachmentTool(Tool):
    name = "download_file"
    description = "Downloads the file attached to the task ID"
    inputs = {'task_id': {'type': 'string', 'description': 'The task id to download attachment from.'}}
    output_type = "string"

    def forward(self, task_id: str) -> str:
        """
        Downloads a file associated with the given task ID.
        Returns the file path where the file is saved locally.
        """
        file_url = f"{DEFAULT_API_URL}/files/{task_id}"
        local_file_path = f"downloads/{task_id}.file"

        print(f"Downloading file for task ID {task_id} from {file_url}...")
        try:
            response = requests.get(file_url, stream=True, timeout=15)
            response.raise_for_status()

            os.makedirs("downloads", exist_ok=True)
            with open(local_file_path, "wb") as file:
                for chunk in response.iter_content(chunk_size=8192):
                    file.write(chunk)

            print(f"File downloaded successfully: {local_file_path}")
            return local_file_path
        except requests.exceptions.RequestException as e:
            print(f"Error downloading file for task {task_id}: {e}")
            raise

    def __init__(self, *args, **kwargs):
        self.is_initialized = False


class VisitWebpageTool(Tool):
    name = "visit_webpage"
    description = "Visits a webpage at the given url and reads its content as a markdown string. Use this to browse webpages."
    inputs = {'url': {'type': 'string', 'description': 'The url of the webpage to visit.'}}
    output_type = "string"

    def forward(self, url: str) -> str:
        try:
            import requests
            from markdownify import markdownify
            from requests.exceptions import RequestException

            from smolagents.utils import truncate_content
        except ImportError as e:
            raise ImportError(
                "You must install packages `markdownify` and `requests` to run this tool: for instance run `pip install markdownify requests`."
            ) from e
        try:
            # Send a GET request to the URL with a 20-second timeout
            response = requests.get(url, timeout=20)
            response.raise_for_status()  # Raise an exception for bad status codes

            # Convert the HTML content to Markdown
            markdown_content = markdownify(response.text).strip()

            # Remove multiple line breaks
            markdown_content = re.sub(r"\n{3,}", "\n\n", markdown_content)

            return truncate_content(markdown_content, 10000)

        except requests.exceptions.Timeout:
            return "The request timed out. Please try again later or check the URL."
        except RequestException as e:
            return f"Error fetching the webpage: {str(e)}"
        except Exception as e:
            return f"An unexpected error occurred: {str(e)}"

    def __init__(self, *args, **kwargs):
        self.is_initialized = False