"""Canonical flows must pass lfx's strict validator (level 4).

Guards the source-of-truth directory against authoring mistakes: the
input_schema parser and the LFX runtime both assume well-formed exports.
Runs `lfx validate --level 4` (the dev dep, same minor as Langflow).
"""

import subprocess
import sys
from pathlib import Path

from app.flows import export

FLOW_DIR = Path(__file__).resolve().parent.parent / "flows"


def test_canonical_flows_pass_lfx_validate():
    files = export.iter_flow_files(FLOW_DIR)
    assert files, "no canonical flows found"
    process = subprocess.run(
        [
            sys.executable,
            "-m",
            "lfx",
            "validate",
            "--level",
            "4",
            *[str(f) for f in files],
        ],
        capture_output=True,
        text=True,
        timeout=300,
        check=False,
    )
    assert process.returncode == 0, f"lfx validate failed:\n{process.stdout}\n{process.stderr}"