"""
Chat Page Router
Serves the chat UI for character interactions.
"""
from fastapi import APIRouter, Request
from fastapi.responses import HTMLResponse


router = APIRouter()


@router.get("/{lang}/chat", response_class=HTMLResponse)
async def chat_page(lang: str, req: Request):
    """
    Render the chat interface page.

    Args:
        lang: Language code (de/en)
        req: FastAPI request object

    Returns:
        HTML response with chat interface
    """
    return req.app.state.render(
        req,
        "pages/chat.html",
        seo={"title": "Crumbforest Chat", "desc": "Chat with Krümeleule and FunkFox"}
    )