tui_gateway/render.py

"""Rendering bridge — routes TUI content through Python-side renderers.

When agent.rich_output exists, its functions are used. When it doesn't,
everything returns None and the TUI falls back to its own markdown.tsx.
"""

from __future__ import annotations


def render_message(text: str, cols: int = 80) -> str | None:
    try:
        from agent.rich_output import format_response
    except ImportError:
        return None

    try:
        return format_response(text, cols=cols)
    except TypeError:
        return format_response(text)
    except Exception:
        return None


def render_diff(text: str, cols: int = 80) -> str | None:
    try:
        from agent.rich_output import render_diff as _rd
    except ImportError:
        return None

    try:
        return _rd(text, cols=cols)
    except TypeError:
        return _rd(text)
    except Exception:
        return None


def make_stream_renderer(cols: int = 80):
    try:
        from agent.rich_output import StreamingRenderer
    except ImportError:
        return None

    try:
        return StreamingRenderer(cols=cols)
    except TypeError:
        return StreamingRenderer()
    except Exception:
        return None