"""custom-html — Playwright UI flow (Phase 2 P6).

The recipe-maintainer corpus did not ship a Playwright test for custom-html — but the cfold layout
uses `custom/` as the canonical home for browser flows where a recipe's core UX is a UI. custom-html
serves HTML; a browser-rendered fetch (vs raw HTTP) proves the page actually renders and any client-
side resources resolve. Distinct from `tests/custom-html/test_install.py` which runs Playwright as
part of the lifecycle INSTALL overlay; this file is the standalone Phase-2 custom-stage version, so a
later non-lifecycle browser flow (e.g. a content-management UI) has its home already.
"""

from __future__ import annotations

import os
import sys

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


def test_browser_renders_html(live_app):
    """Browser-render the served root page and assert the HTML loads with no console errors."""
    from playwright.sync_api import sync_playwright

    url = f"https://{live_app}/"
    with sync_playwright() as p:
        browser = p.chromium.launch(args=["--no-sandbox"])
        try:
            context = browser.new_context(ignore_https_errors=True)
            page = context.new_page()
            console_errors: list[str] = []
            page.on(
                "console",
                lambda msg: console_errors.append(msg.text) if msg.type == "error" else None,
            )
            # F2-3 hardening (status mismatch + PlaywrightError retries)
            resp = harness_browser.goto_with_retry(
                page, url, accept_statuses=(200,), wait_until="load"
            )
            assert resp is not None and resp.status == 200, f"page status {resp and resp.status}"
            html = page.content()
            assert "<html" in html.lower(), "page did not render an HTML document"
            # nginx default page contains "nginx" in markup; either custom HTML or default works,
            # but BOTH should be served as actual HTML — caught above.
            assert not console_errors, f"browser logged console errors: {console_errors}"
        finally:
            browser.close()
