"""Phase 01 smoke E2E: the app boots, serves the local frontend, and the
placeholder chat round-trips without a stale button.

Run:  uv run pytest tests/e2e/test_smoke.py -v
"""
from __future__ import annotations

import re

import httpx
from playwright.sync_api import Page, expect


def test_health_endpoint(app_url: str) -> None:
    r = httpx.get(f"{app_url}/api/health", timeout=5)
    assert r.status_code == 200
    assert r.json()["status"] == "ok"


def test_index_page_loads_locally(page: Page, app_url: str) -> None:
    page.goto(app_url)
    assert page.title() == "Brain of Reese"
    assert page.locator(".brand").is_visible()
    # No external (CDN) resources in the document.
    html = page.content()
    assert 'src="http' not in html
    assert 'href="http' not in html.replace('href="http://www.w3.org', "")


def test_placeholder_chat_roundtrip(page: Page, app_url: str) -> None:
    page.goto(app_url)
    page.locator("#message-input").fill("hello brain")
    page.locator("#send-btn").click()

    # User bubble appears, then the Brain placeholder answer arrives.
    page.locator(".msg.user .bubble").first.wait_for(state="visible", timeout=10_000)
    brain_bubble = page.locator(".msg.brain .bubble").first
    brain_bubble.wait_for(state="visible", timeout=10_000)
    # to_have_text retries until the async fetch resolves (no stale read).
    expect(brain_bubble).to_have_text(re.compile("neurons"), timeout=10_000)

    # Button is never left stuck: back to "Send" and enabled.
    btn = page.locator("#send-btn")
    assert btn.is_enabled()
    assert "Send" in btn.inner_text()