#!/usr/bin/env python3
"""Is every help-tip reachable by keyboard and by touch? — C1 + S8, T9.5.

The badges were <span> elements whose :focus CSS was dead code (no tabindex)
and whose touch path did not exist - on tablets, Field View's surface. Now the
component upgrades every badge to a button at load, and one viewport-clamped
role=tooltip bubble serves them all. This probe drives a badge with REAL key
events and a tap at 390px, then greps the app-wide metrics the audit document
cites.

Exit 0 all passed, 1 a failure, 2 could not run.
"""
import io
import json
import os
import re
import sys
import tempfile
import time

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

import cdp                                                           # noqa: E402
from browser_check import seed, start_server, chk, _PASS, _FAIL      # noqa: E402
from sections_check import set_sop                                   # noqa: E402
from stepper_check import dismiss_dialogs                            # noqa: E402

ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
HTML = os.path.join(ROOT, "html")


def ascii_(v, n=280):
    return re.sub(r"\s+", " ", str(v)).encode("ascii", "replace").decode()[:n]


def settle(seconds=0.5):
    time.sleep(seconds)


def strip_js(src):
    src = re.sub(r"/\*.*?\*/", "", src, flags=re.S)
    return "\n".join(re.sub(r"(?<![:'\"])//.*$", "", ln) for ln in src.split("\n"))


def wait_creator(page, tries=40):
    for _ in range(tries):
        if page.eval("!!window.wpCreatorReady"):
            return True
        time.sleep(0.3)
    return False


def main():
    exe = cdp.find_browser()
    if not exe:
        print("no headless-capable browser found; set WP_BROWSER.")
        return 2

    # ── 1. the greps the audit cites ──────────────────────────────────────────
    print("\n1. the audit's grep metrics")
    divspan = 0
    outline_bad = []
    for name in sorted(os.listdir(HTML)):
        if not name.endswith((".html", ".js", ".css")):
            continue
        src = io.open(os.path.join(HTML, name), encoding="utf-8").read()
        code = strip_js(src) if not name.endswith(".css") else re.sub(r"/\*.*?\*/", "", src, flags=re.S)
        divspan += len(re.findall(r"<(div|span)[^>]*\bonclick=", code))
        for m in re.finditer(r"outline:\s*none", code):
            # The replacement can sit in the rule ABOVE (wp-chrome's search shell
            # rings on :focus-within, and ringing input + shell would draw two),
            # so the window looks both ways.
            ctx = code[max(0, m.start() - 400):m.start() + 260]
            tail = ctx[ctx.find("outline:") + 12:]
            if ("outline" not in tail and "box-shadow" not in ctx
                    and "focus-within" not in ctx and "border" not in tail):
                outline_bad.append(name)
    chk("div/span click handlers app-wide: 0 (baseline 12/2)", divspan == 0, divspan)
    chk("outline:none without a replacement: 0", not outline_bad, outline_bad[:4])
    chk("the audit document exists with the per-page table",
        "## Per-page results" in io.open(os.path.join(ROOT, "docs", "reference",
                                         "accessibility-audit.md"), encoding="utf-8").read())

    tmpdir = tempfile.mkdtemp(prefix="wpsuite-tip-")
    db_path = os.path.join(tmpdir, "check.db")
    server = None
    browser = None
    try:
        tok = seed(db_path)
        set_sop(db_path, {})
        port = cdp.free_port()
        base = "http://127.0.0.1:%d" % port
        server = start_server(port, db_path)

        browser = cdp.Browser(exe)
        page = browser.page()
        page.clear_cookies()
        page.set_cookie("wp_session", tok["root"])
        page.viewport(390, 844, mobile=True)
        page.goto(base + "/wp-creation-index.html?project=projA")
        dismiss_dialogs(page)
        chk("the creator boots at 390px", wait_creator(page))
        settle(1.8)

        # ── 2. every badge is a real button ──────────────────────────────────
        print("\n2. the component, upgraded")
        counts = json.loads(page.eval("""JSON.stringify({
          total: document.querySelectorAll('.help-tip').length,
          buttons: document.querySelectorAll('button.help-tip').length,
          spans: document.querySelectorAll('span.help-tip').length,
        })"""))
        chk("every help-tip on the page is a <button>; zero spans remain",
            counts["total"] > 0 and counts["spans"] == 0
            and counts["buttons"] == counts["total"], ascii_(counts))
        chk("...with an accessible name and a declared state",
            page.eval("""[...document.querySelectorAll('button.help-tip')]
              .every(b => b.getAttribute('aria-label') && b.getAttribute('aria-expanded') !== null)"""))

        # ── 3. keyboard ───────────────────────────────────────────────────────
        print("\n3. keyboard")
        # Programmatic focus() fires no focusin unless the document HAS focus -
        # the exact trap form_structure_check documents. Emulate it, loudly.
        page.ws.call("Emulation.setFocusEmulationEnabled", {"enabled": True})
        chk("focus emulation is on, so a focus reading means something",
            page.eval("document.hasFocus()") is True)
        page.eval("""(() => {
          const b = [...document.querySelectorAll('button.help-tip')]
            .find(x => x.offsetParent !== null) || document.querySelector('button.help-tip');
          b.scrollIntoView({block:'center'}); b.focus();
        })()""")
        settle(0.4)
        chk("focusing a badge shows the tooltip",
            page.eval("!!(document.getElementById('wp-tip-bubble') && !document.getElementById('wp-tip-bubble').hidden)")
            and page.eval("(document.getElementById('wp-tip-bubble')||{}).textContent.length > 0"))
        chk("...as a role=tooltip the badge points at",
            page.eval("document.getElementById('wp-tip-bubble').getAttribute('role')") == "tooltip"
            and page.eval("document.activeElement.getAttribute('aria-describedby')") == "wp-tip-bubble")
        bubble = json.loads(page.eval("""JSON.stringify((() => {
          const r = document.getElementById('wp-tip-bubble').getBoundingClientRect();
          return {left: r.left, right: r.right};
        })())"""))
        chk("390px: the bubble is CLAMPED to the viewport (BL-001's cause, dead)",
            bubble["left"] >= 0 and bubble["right"] <= 390, ascii_(bubble))

        # ── 4. touch ──────────────────────────────────────────────────────────
        print("\n4. touch")
        page.eval("document.activeElement.blur()")
        settle(0.3)
        page.eval("""(() => {
          const b = [...document.querySelectorAll('button.help-tip')]
            .find(x => x.offsetParent !== null);
          b.click();
        })()""")
        settle(0.4)
        chk("tapping a badge opens the tooltip and says so with aria-expanded",
            page.eval("!!(document.getElementById('wp-tip-bubble') && !document.getElementById('wp-tip-bubble').hidden)")
            and page.eval("!!document.querySelector(%s)"
                          % json.dumps('button.help-tip[aria-expanded="true"]')))
        page.eval("document.body.click()")
        settle(0.3)
        chk("tapping elsewhere closes it",
            page.eval("!document.getElementById('wp-tip-bubble') || document.getElementById('wp-tip-bubble').hidden"))

        js_errors = [e for e in page.js_errors() if "beforeunload" not in e]
        chk("no JavaScript errors anywhere in this run", not js_errors,
            ascii_(js_errors[:2]))

    finally:
        if browser is not None:
            try:
                browser.close()
            except Exception:
                pass
        if server is not None:
            try:
                server.terminate()
            except Exception:
                pass

    print("\n" + "-" * 54)
    print("%d/%d checks passed." % (len(_PASS), len(_PASS) + len(_FAIL)))
    for f in _FAIL:
        print("  - " + f)
    return 1 if _FAIL else 0


if __name__ == "__main__":
    sys.exit(main())