"""custom-html — RESTORE overlay (Phase 1d, DG4): data-integrity, extends the generic restore.

Runs after the backup overlay (test_backup.py) on the SAME shared deployment, which left state
mutated to "mutated" after backing up "original". This restores the snapshot via the shared op
helper (`generic.do_restore`, which also asserts the app is healthy + serving afterwards), then
asserts the VOLUME data returned to the pre-mutation "original" — the app-specific data integrity the
generic restore cannot check. Reads the marker via exec_in_app (volume-direct, robust to the
post-restore serving race). Assertion-only (no deploy/teardown)."""

import os
import sys

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "runner"))
from harness import generic, lifecycle  # noqa: E402

MARKER_PATH = "/usr/share/nginx/html/ci-marker.txt"


def test_restore_returns_state(live_app, meta):
    domain = live_app
    generic.do_restore(domain, meta)  # restore + assert healthy/serving
    restored = lifecycle.exec_in_app(domain, ["cat", MARKER_PATH]).strip()
    assert (
        restored == "original"
    ), f"restore did not return the pre-mutation (backed-up) state: got {restored!r}"