SurfSense/surfsense_backend/app/automations/templating/render.py

29 lines
1 KiB
Python

"""Render templates and evaluate predicates against the sandboxed environment."""
from __future__ import annotations
from collections.abc import Mapping
from typing import Any
from .environment import ENV
def render_template(template: str, context: Mapping[str, Any]) -> str:
"""Render ``template`` with ``context``."""
return ENV.from_string(template).render(**context)
def evaluate_predicate(expression: str, context: Mapping[str, Any]) -> bool:
"""Evaluate a Jinja expression (not a template body) and coerce to bool."""
return bool(ENV.compile_expression(expression)(**context))
def render_value(value: Any, context: Mapping[str, Any]) -> Any:
"""Recursively render every string in a JSON-like value structure."""
if isinstance(value, str):
return render_template(value, context)
if isinstance(value, dict):
return {k: render_value(v, context) for k, v in value.items()}
if isinstance(value, list):
return [render_value(v, context) for v in value]
return value