#!/usr/bin/env python3
"""putback.py — D22 (the put-back covers every restore) on the sweep box, the 10-21 night's method
(`audits/night-2026-10-21/P3-restore/`): install, seed one item through the front door, „Mentés most", then the FAULT —
the recovery unit's largest volume archive truncated to half (a damaged backup, the only hand-made change) — then the
household's „Visszaállítás" of that unit. Expected: the restore reports failure, the LIVE data and definition are put
back, the app runs, and the item reads back. Then remove with data.

usage: SC=… SWEEP_EV=… DRIVE_ROOT=… python3 putback.py <app>     (evidence: <SWEEP_EV>/_putback/<app>/)
"""
import json, os, sys, time

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
import sweep as sw  # noqa: E402

w, fxm = sw.w, sw.fxm


def main(app):
    d = os.path.join(sw.EV, "_putback", app)
    os.makedirs(d, exist_ok=True)
    log = open(os.path.join(d, "walk.log"), "a")

    def say(*a):
        line = time.strftime("%H:%M:%SZ", time.gmtime()) + " " + " ".join(str(x) for x in a)
        print(line, flush=True)
        log.write(sw.scrub(line) + "\n")
        log.flush()

    w.say = say
    fx = fxm.FIXTURES[app]
    sub = getattr(fx, "sub", app)
    rec = {"app": app}
    w.login()
    try:
        rec["install"] = w.deploy(app, sub) and w.wait_app(sub, "/", tries=90, delay=5)
        tok = fx.seed(w, sub, say)
        rec["seed"] = bool(tok)
        sw.backup_now(rec, say)
        units = sw.g(f"ls -la --time-style=+%T /mnt/sys_drive/felhom-data/backups/primary/{app}/volume-dumps/ 2>&1")
        say("  unit before the fault:\n" + units)
        big = sw.g(f"ls -S /mnt/sys_drive/felhom-data/backups/primary/{app}/volume-dumps/*.tar 2>/dev/null | head -1").strip()
        size = sw.g(f"stat -c %s {big}").strip()
        sw.g(f"truncate -s $(( {size} / 2 )) {big}")
        after = sw.g(f"stat -c %s {big}").strip()
        say(f"  THE FAULT: {big} {size} -> {after}")
        rec["fault"] = {"file": big, "from": size, "to": after}
        sw.restore_unit(app, rec, say)
        rec["state_after"] = w.stack(app).get("state")
        rec["item_after"] = bool(tok) and bool(fx.verify(w, sub, tok, say))
        rec["controller_log"] = sw.g("docker logs --since 10m felhom-controller 2>&1 | grep -iE 'put back|R-893|restore failed|put-back' | tail -5")
        say("  controller: " + rec["controller_log"].strip()[:600])
    finally:
        sw.remove(app, keep=False, say=say)
        rec["after_remove"] = sw.leftovers(app, sub)
        json.dump(rec, open(os.path.join(d, "record.json"), "w"), ensure_ascii=False, indent=1)
        say("  == putback " + json.dumps({k: rec.get(k) for k in ("seed", "state_after", "item_after")}))


if __name__ == "__main__":
    main(sys.argv[1])