patch_fix.py

# patch_fix.py
import os
import re


def fix_langchain_adapter():
    adapter_path = "/Users/filipdvoran/Developer/mcp-use/mcp_use/adapters/langchain_adapter.py"

    # Backup
    backup_path = adapter_path + ".backup"

    with open(adapter_path, 'r') as f:
        content = f.read()

    # Vytvor backup
    with open(backup_path, 'w') as f:
        f.write(content)
    print(f"💾 Backup vytvorený: {backup_path}")

    # Pridaj Union import ak chýba
    if 'from typing import Union' not in content:
        # Nájdi existujúci typing import a pridaj Union
        if 'from typing import' in content:
            content = re.sub(
                r'(from typing import[^;\n]*)',
                r'\1, Union',
                content,
                count=1
            )
        else:
            # Pridaj nový import na začiatok
            content = "from typing import Union\n" + content

    # Oprav union syntax chyby
    content = re.sub(r'param_type \| None', 'Union[param_type, type(None)]', content)
    content = re.sub(r'(\w+) \| None', r'Union[\1, type(None)]', content)

    # Zapíš opravený súbor
    with open(adapter_path, 'w') as f:
        f.write(content)

    print("✅ Súbor opravený!")


if __name__ == "__main__":
    fix_langchain_adapter()