import re
import html

def get_milestone(session, edit_milestone_url):
    """Fetch milestone details."""
    response = session.get(edit_milestone_url)
    if response.status_code == 200:
        title_match = re.search(r'<input[^>]*name=["\']title["\'][^>]*value=["\'](.*?)["\']', response.text, re.IGNORECASE)
        content_match = re.search(r'<textarea[^>]*name=["\']content["\'][^>]*>(.*?)</textarea>', response.text, re.IGNORECASE | re.DOTALL)
        title = title_match.group(1) if title_match else None
        content = content_match.group(1).strip() if content_match else None
        return {'title': title, 'content': content}
    else:
        print(f"Failed to fetch milestone: {response.status_code}")
        return None

def append_item_to_identifier(encoded_content, identifier, new_item):
    """Append a new item to the block identified by the given identifier."""
    content = html.unescape(encoded_content)
    block_pattern = rf'(<!--\s*{identifier}\s*-->)(.*?)(<!--\s*/{identifier}\s*-->)'
    block_match = re.search(block_pattern, content, re.DOTALL)
    if not block_match:
        print(f"Block with identifier '{identifier}' not found.")
        return False

    start_marker = block_match.group(1)
    block_content = block_match.group(2).strip()
    end_marker = block_match.group(3)

    formatted_item = f"- [x] {new_item['username']}: [{new_item['title']}]({new_item['link_evoluz']})"
    updated_block_content = f"{block_content}\n{formatted_item}"

    updated_content = f"{start_marker}\n{updated_block_content}\n{end_marker}"
    return updated_content