"""Hidden interface test for the Record Manager (blank must fail, solved must pass).

Runs with pytest's cwd = the assembled submission (/work/submission).
Blank (M1 starter) fails because `save`/`load` are unimplemented ("not yet");
the full reference implements the store round-trip.
"""

import pathlib
import subprocess


def _root() -> pathlib.Path:
    return pathlib.Path.cwd()


def _run(cmd, timeout=180, **kw):
    return subprocess.run(cmd, capture_output=True, text=True, timeout=timeout, **kw)


def test_record_manager_interface():
    root = _root()

    build = _run(["make", "-C", str(root), "-j2"])
    assert build.returncode == 0, "BUILD FAILED:\n" + build.stdout + build.stderr
    recman = root / "build" / "recman"
    assert recman.exists(), "build/recman missing after make"

    # add two records, save to a file
    session1 = (
        "add\nAda Lovelace\nada@x\n555-0100\n"
        "add\nGrace Hopper\ngrace@x\n444-0200\n"
        "save\n/tmp/rm_hidden.txt\nquit\n"
    )
    r = _run([str(recman)], input=session1)
    assert "added: Ada Lovelace" in r.stdout, "add failed:\n" + r.stdout
    assert "added: Grace Hopper" in r.stdout, "add failed:\n" + r.stdout
    assert "saved" in r.stdout, "save did not persist (blank starter prints 'not yet'):\n" + r.stdout

    # load back in a fresh session and confirm the round-trip
    session2 = "load\n/tmp/rm_hidden.txt\nlist\nquit\n"
    r2 = _run([str(recman)], input=session2)
    assert "Ada Lovelace" in r2.stdout and "Grace Hopper" in r2.stdout, (
        "save/load round-trip failed:\n" + r2.stdout
    )