"""custom-html — INSTALL overlay (Phase 1d layering proof, DG4).

Demonstrates OVERRIDE + EXTEND-by-composition: this file's presence makes the harness run it INSTEAD
of the generic install tier (override), and it reuses the generic assertion (`generic.assert_serving`)
then ADDS a recipe-specific Playwright content check (extend). Assertion-only — the orchestrator has
already deployed the shared app once (no deploy here, so deploy-count stays 1)."""

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
from harness import generic


def test_serving_and_content(live_app, meta):
    # extend-by-composition: reuse the generic "really serving" assertion ...
    generic.assert_serving(live_app, meta)
    # ... then add the recipe-specific assertion: a real browser sees nginx-served HTML (D3).
    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:
            page = browser.new_context(ignore_https_errors=True).new_page()
            # F2-3-style hardening (centralized in harness.browser.goto_with_retry): retry through
            # transient PlaywrightError (net::ERR_*) and status mismatches.
            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}"
            body = page.content()
            assert "nginx" in body.lower() or "<html" in body.lower(), "no served HTML content"
        finally:
            browser.close()
