"""Unit: the navbar steering toggle is gone (owner request, 2026-08-28).

The "Tuning" steering toggle (``#steering-toggle``) used to sit in
every page's shared header — shipped hidden (phase 40), revealed for
the admin, removed from the DOM for anonymous. The owner asked for the
button to go away entirely: note management now lives on the
standalone Tuning page (``/tuning.html``, phase 27). This file pins the
removal at source level — the toggle + count badge are ABSENT from all
six pages, the ``#steering-panel`` section still ships hidden (kept
fresh by the chat page's per-bubble Tune form through header.js), the
shared module owns no toggle wiring anymore, and the admin-only
``#nav-tuning`` link — the surviving path to the notes — still ships
hidden.
"""
from __future__ import annotations

import re
from pathlib import Path

FRONTEND = Path(__file__).resolve().parents[2] / "frontend"
ASSETS = FRONTEND / "assets"

HEADER_JS = ASSETS / "header.js"

#: All eight pages carry the shared header block (phase 34's five pages
#: + phase 35's git-sources page + phase 50's History page +
#: phase 51's shared page).
PAGES = (
    FRONTEND / "index.html",
    FRONTEND / "sources.html",
    FRONTEND / "document.html",
    FRONTEND / "git-sources.html",
    FRONTEND / "login.html",
    FRONTEND / "tuning.html",
    FRONTEND / "history.html",
    FRONTEND / "shared.html",
)


def _text(path: Path) -> str:
    assert path.is_file(), f"missing frontend file: {path}"
    return path.read_text(encoding="utf-8")


def _init_body(js: str) -> str:
    """The source of initSharedHeader in header.js."""
    fn = js.find("function initSharedHeader")
    assert fn != -1, "initSharedHeader must be defined"
    return js[fn : js.find("\n}", fn)]


# ---------- the removal: absent from every page's navbar ----------


def test_steering_toggle_removed_from_all_six_pages() -> None:
    """The #steering-toggle button (and its #steering-count badge) is
    gone from the navbar of EVERY page — absent, not hidden."""
    for html in PAGES:
        text = _text(html)
        assert 'id="steering-toggle"' not in text, (
            f"{html.name}: #steering-toggle must be removed from the navbar"
        )
        assert 'class="steering-toggle"' not in text, (
            f"{html.name}: the .steering-toggle button must be removed"
        )
        assert 'id="steering-count"' not in text, (
            f"{html.name}: the #steering-count badge lived inside the toggle"
        )


def test_steering_panel_still_ships_hidden_on_all_six_pages() -> None:
    """The #steering-panel section survives the toggle removal (the chat
    page's per-bubble Tune form keeps it fresh through header.js) and
    still ships hidden, with its list / empty state / announcer."""
    for html in PAGES:
        text = _text(html)
        tag = re.search(r'<section[^>]*id="steering-panel"[^>]*>', text)
        assert tag, f"{html.name}: missing the #steering-panel section"
        assert re.search(r"\bhidden\b", tag.group(0)), "the panel ships hidden"
        assert 'id="steering-list"' in text, f"{html.name}: missing #steering-list"
        assert 'id="steering-empty"' in text, f"{html.name}: missing #steering-empty"
        assert re.search(r'<p[^>]*id="steering-announcer"[^>]*role="status"[^>]*>', text), (
            f"{html.name}: missing the #steering-announcer live region"
        )


# ---------- header.js: no toggle wiring left, panel contract intact ----------


def test_header_js_carries_no_toggle_wiring() -> None:
    """header.js owns no #steering-toggle reference anymore: no element
    lookup, no admin unhide, no anonymous removal, no click binding, no
    open/close helper, no count badge."""
    js = _text(HEADER_JS)
    assert 'querySelector("#steering-toggle")' not in js
    assert "steeringToggle" not in js
    assert "setSteeringPanel" not in js
    assert 'querySelector("#steering-count")' not in js
    assert "steeringCount" not in js


def test_header_js_keeps_the_panel_contract() -> None:
    """What survives: inside initSharedHeader the admin branch still
    refreshes the panel list (fire-and-forget) and the anonymous branch
    still REMOVES the panel from the DOM (phase-16 "absent, not hidden")
    so /api/steering is never fetched for anonymous visitors."""
    body = _init_body(_text(HEADER_JS))
    admin = body.find("if (admin)")
    refresh = body.find("if (steeringPanel) refreshSteering();")
    assert admin != -1 and refresh != -1, "the admin refresh is missing"
    assert admin < refresh, "the refresh must live in the admin branch"
    assert "steeringPanel?.remove();" in body, (
        "the anonymous remove-from-DOM path must stay intact"
    )


# ---------- the surviving path to the notes ----------


def test_nav_tuning_still_ships_hidden_on_all_six_pages() -> None:
    """The admin-only Tuning NAV LINK (#nav-tuning) — the surviving path
    to the steering notes now that the navbar toggle is gone — still
    ships hidden on every page (the phase-19/29/35 contract)."""
    for html in PAGES:
        tag = re.search(r'<a[^>]*id="nav-tuning"[^>]*>', _text(html))
        assert tag, f"{html.name}: missing the #nav-tuning nav link"
        assert re.search(r"\bhidden\b", tag.group(0)), (
            f"{html.name}: #nav-tuning must ship hidden"
        )