"""cryptpad — BACKUP overlay (Phase 1d, DG4): seed a known state into the backed-up cryptpad_data
volume, back it up (assert a snapshot artifact), then mutate so the RESTORE overlay (test_restore.py)
can prove the backed-up state returns. Runs on the shared deployment; the mutated marker persists for
the restore tier.

The cryptpad `app` service is labelled `backupbot.backup=true`, so its volumes (incl. cryptpad_data)
are backed up. Marker is checked via `exec_in_app` (data isn't HTTP-served)."""

import os
import sys

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

MARKER = "/cryptpad/data/ci-marker.txt"


def test_backup_captures_state(live_app, meta):
    domain = live_app

    # 1) establish original state in the backed-up volume, then back it up (reuse the generic op:
    #    backup + assert a snapshot artifact was produced)
    lifecycle.exec_in_app(domain, ["sh", "-c", f"echo original > {MARKER}"])
    assert lifecycle.exec_in_app(domain, ["cat", MARKER]).strip() == "original"
    snap = generic.do_backup(domain)
    assert snap, "backup produced no snapshot artifact"

    # 2) mutate state (diverge from the backup)
    lifecycle.exec_in_app(domain, ["sh", "-c", f"echo mutated > {MARKER}"])
    assert lifecycle.exec_in_app(domain, ["cat", MARKER]).strip() == "mutated"