"""S3 of the anti-slop fix slices, measured in a real browser at phone width.

A layout claim read off a stylesheet is a guess, so these open the pages in the
same real uvicorn + Chromium harness as test_flow_browser and measure boxes. At
390x844 no text may overprint other text, and no word may be set in a column
narrower than itself. Skips, never fails, when no usable Chromium exists.
"""

import pathlib
import sys

sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent))
from test_flow_browser import _png, browser, live  # noqa: E402,F401 (fixtures)

PHONE = {"width": 390, "height": 844}


def _boxes_intersect(a, b, slack=1.0):
    return (min(a["r"], b["r"]) - max(a["l"], b["l"]) > slack
            and min(a["b"], b["b"]) - max(a["t"], b["t"]) > slack)


_RECT = "e => { const b = e.getBoundingClientRect(); return {l: b.left, r: b.right, t: b.top, b: b.bottom, w: b.width, h: b.height}; }"


def _board(root: pathlib.Path):
    from booth.benches import set_bench_state, upsert_bench
    from booth.links import LINKS_FILE
    b = root / "links"
    b.mkdir()
    (b / LINKS_FILE).write_text(
        "- [talk, a fleet voice (HTTPS, trusted cert)](https://talk.example:8092/) <sub>· tts-dev · 2026-09-06 23:35</sub>\n"
        "- [a second link](http://x.example/) <sub>· infra-ops · 2026-09-07 09:12</sub>\n")
    for url, name, owner, state in [("http://10.100.10.50:5173/", "peedlar desk", "peedlar-dev", "live"),
                                    ("http://10.100.10.50:8931/board", "svos board", "highseat-dev", "promoted"),
                                    ("http://10.100.10.50:7788/talk", "talk demo", "booth", "retired")]:
        bench, _ = upsert_bench(root, url, name, owner)
        set_bench_state(root, bench.id, state)
    return b


def test_bench_rows_do_not_overprint_on_a_phone(browser, live):
    base, root = live
    _board(root)
    page = browser.new_page(viewport=PHONE)
    page.goto(f"{base}/b/links/", wait_until="load")
    rows = page.locator(".bench-row")
    assert rows.count() == 3, "positive control: the three benches render"
    for i in range(rows.count()):
        row = rows.nth(i)
        parts = {sel: row.locator(sel).first.evaluate(_RECT)
                 for sel in (".bench-state", ".bench-link", ".bench-url", ".bench-who", ".bench-when", ".bench-acts")}
        names = list(parts)
        for x in range(len(names)):
            for y in range(x + 1, len(names)):
                assert not _boxes_intersect(parts[names[x]], parts[names[y]]), \
                    f"row {i}: {names[x]} overprints {names[y]}: {parts[names[x]]} / {parts[names[y]]}"
        main = row.locator(".bench-main").evaluate(_RECT)
        assert main["w"] >= 200, f"row {i}: the name's column is squeezed to {main['w']:.0f}px"
    page.close()


def test_board_head_stays_compact_on_a_phone(browser, live):
    base, root = live
    _board(root)
    page = browser.new_page(viewport=PHONE)
    page.goto(f"{base}/b/links/", wait_until="load")
    for sel in (".board-title", ".bench-title"):
        title = page.locator(sel).evaluate(
            "e => ({h: e.getBoundingClientRect().height, lh: parseFloat(getComputedStyle(e).lineHeight) || parseFloat(getComputedStyle(e).fontSize) * 1.3})")
        assert title["h"] <= title["lh"] * 1.5, f"{sel} wraps: {title}"
    page.close()


def test_doc_name_keeps_a_readable_line_on_a_phone(browser, live):
    base, root = live
    d = root / "d"
    d.mkdir()
    (d / "01-information-architecture.md").write_text("# The Booth\n\nA paragraph of text.\n")
    page = browser.new_page(viewport=PHONE)
    page.goto(f"{base}/b/d/", wait_until="load")
    name = page.locator(".doc-name").first.evaluate(_RECT)
    assert name["w"] >= 240, f"the doc name is set {name['w']:.0f}px wide"
    page.close()


def test_file_tile_number_clears_the_download_link(browser, live):
    base, root = live
    f = root / "f"
    f.mkdir()
    (f / "ldp-demo-kit-2026-09-23-18b8cee.zip").write_bytes(b"PK\x05\x06" + b"\x00" * 18)
    for vp in (PHONE, {"width": 1280, "height": 800}):
        page = browser.new_page(viewport=vp)
        page.goto(f"{base}/b/f/", wait_until="load")
        ord_box = page.locator(".item > .ord").first.evaluate(_RECT)
        text_box = page.locator(".item .dl").first.evaluate(
            "e => { const r = document.createRange(); r.selectNodeContents(e); const b = r.getBoundingClientRect();"
            " return {l: b.left, r: b.right, t: b.top, b: b.bottom, w: b.width, h: b.height}; }")
        assert not _boxes_intersect(ord_box, text_box), (vp, ord_box, text_box)
        page.close()


def test_review_header_is_one_line_on_a_phone(browser, live):
    base, root = live
    g = root / "g"
    g.mkdir()
    (g / "a.png").write_bytes(_png(64, 48))
    (g / "b.png").write_bytes(_png(64, 48))
    page = browser.new_page(viewport=PHONE)
    for url in (f"{base}/b/g/view?f=a.png", f"{base}/b/g/compare?a=a.png&b=b.png"):
        page.goto(url, wait_until="load")
        assert page.locator(".topbar .tagline").evaluate("e => getComputedStyle(e).display") == "none", url
        assert page.locator(".topbar").evaluate("e => e.getBoundingClientRect().height") <= 64, url
    page.goto(f"{base}/", wait_until="load")
    assert page.locator(".topbar .tagline").evaluate("e => getComputedStyle(e).display") != "none", \
        "the Desk keeps its tagline (negative control)"
    page.close()


# ---- S4: reading measure --------------------------------------------------------

_DOC = "# The Booth\n\n## What it is\n\n### Stated once\n\n" + ("The Booth is the fleet's operator-review surface. Agents post work; the operator looks at it, judges it, and the judgment gets back to the agent. " * 4) + "\n"


def _doc_page(browser, live):
    base, root = live
    d = root / "d"
    d.mkdir()
    (d / "doc.md").write_text(_DOC)
    page = browser.new_page(viewport={"width": 1280, "height": 900})
    page.goto(f"{base}/b/d/view?f=doc.md", wait_until="load")
    return page


def test_doc_prose_reads_at_a_book_measure(browser, live):
    page = _doc_page(browser, live)
    chars = page.locator(".markdown-body p").first.evaluate("""p => {
        const probe = document.createElement('span');
        probe.textContent = '0'.repeat(100);
        probe.style.cssText = 'position:absolute;visibility:hidden;white-space:nowrap';
        p.appendChild(probe);
        const ch = probe.getBoundingClientRect().width / 100;
        probe.remove();
        return p.getBoundingClientRect().width / ch;
    }""")
    assert chars <= 76, f"a paragraph runs {chars:.0f} characters across"
    page.close()


def test_doc_headings_step_by_size(browser, live):
    page = _doc_page(browser, live)
    size = lambda sel: page.locator(f".markdown-body {sel}").first.evaluate("e => parseFloat(getComputedStyle(e).fontSize)")
    body, h3, h2, h1 = size("p"), size("h3"), size("h2"), size("h1")
    for lo, hi, name in ((body, h3, "h3:body"), (h3, h2, "h2:h3"), (h2, h1, "h1:h2")):
        assert hi / lo >= 1.18, f"{name} is {hi / lo:.2f} ({hi}px over {lo}px)"
    page.close()