siemens_ragas/webapp/api/scenarios.py

"""Route for discovering scenario YAML files that can be evaluated."""

from __future__ import annotations

import logging

from fastapi import APIRouter

from webapp.services import scenario_scanner

router = APIRouter(prefix="/api/scenarios", tags=["scenarios"])
logger = logging.getLogger("webapp.api.scenarios")


@router.get("")
def get_scenarios() -> dict[str, list]:
    """Return every scenario file found under the scenarios/ directory."""
    scenarios = scenario_scanner.list_scenarios()
    valid = sum(1 for s in scenarios if not s.error)
    logger.info("[get_scenarios] total=%d  valid=%d  errors=%d", len(scenarios), valid, len(scenarios) - valid)
    return {"scenarios": [item.model_dump() for item in scenarios]}