"""Phase 47 E2E (Playwright): quadlet unit files + Jinja templates ride the
A9 import path end to end (A9 revised 2026-08-27, owner permission).

Story: ``.agents/user_stories/quadlet-jinja-import.md``
Run in isolation (DB must be up: ``podman compose up -d db``):

    uv run pytest tests/e2e/test_quadlet_jinja_import.py -v --no-cov

Seeding reuses the real import function against ``tests/fixtures/docs/``
with the deterministic mock embeddings — the ``test_import_documents.py``
pattern (truncate the KB, ``import_sources`` in a worker thread). This
suite's re-import changes the KB for the session; it is run in isolation
(A16), so there is no cross-suite interference.

Test → story mapping (Playwright Mapping Rule):
1. ``test_quadlet_and_jinja_indexed`` — ``GET /api/docs`` (admin session)
   lists the four new-format fixtures with non-zero chunk counts and the
   file stem as title — no env configuration needed (default set).
2. ``test_sources_table_shows_them`` (admin) — the Sources table renders
   a row per new file, each with its ``.doc-link`` path link.
3. ``test_container_content_viewable`` — the phase-26 modal shows the
   ``.container`` file's TOML content (``[Container]`` section + sentinel)
   with the stem as title.
4. ``test_jinja_retrievable_not_deflected`` — a question carrying the
   ``.j2`` sentinel FTS-matches the chunk (A8: LOW requires best cosine
   below threshold **and** zero FTS hits) → honest-positive: the answer
   bubble is not ``.is-deflected`` and a source chip names
   ``templates/deploy.j2``.

Phase 97 adaptation: the Sources table is the DRILL-DOWN TREE — the
rows live at their folder levels (``docs`` → ``homelab`` → ``quadlet``
/ ``templates``); the drill is the only change, the asserted
rows/links are unchanged.
"""
from __future__ import annotations

import asyncio
from pathlib import Path
from threading import Thread
from typing import Any

from playwright.sync_api import Page, expect
from sqlalchemy import text

from app.config import Settings
from app.db import SessionLocal
from app.rag.importer import ImportSummary, import_sources
from app.rag.llm import LLMClient
from e2e.auth_helpers import login

REPO = Path(__file__).resolve().parents[2]
FIXTURES = REPO / "tests" / "fixtures" / "docs"

#: The four new-format fixtures (A9 revised 2026-08-27): path → stem title
#: (no H1 → ``extract_title`` falls back to the file stem).
NEW_FORMAT_DOCS = {
    "homelab/quadlet/compose.container": "compose",
    "homelab/quadlet/lan.network": "lan",
    "homelab/quadlet/cache.volume": "cache",
    "homelab/templates/deploy.j2": "deploy",
}

#: Carries the ``.j2`` fixture's sentinel — the hyphens split into the
#: ``rese | jinja | sentinel | 33dd`` tsquery tokens that FTS-match the
#: chunk holding ``{% set sentinel = "RESE-JINJA-SENTINEL-33dd" %}``.
JINJA_QUESTION = "What is RESE-JINJA-SENTINEL-33dd?"


async def _import_fixtures(mock_port: int) -> ImportSummary:
    kwargs: dict[str, Any] = {"_env_file": None, "llm_base_url": f"http://127.0.0.1:{mock_port}/v1"}
    settings = Settings(**kwargs)  # pyright: ignore[reportCallIssue]
    return await import_sources([FIXTURES], LLMClient(settings))


def _run_in_thread(coro: Any) -> Any:
    """Run a coroutine on a worker thread.

    Playwright's sync API keeps an asyncio loop running on the test thread,
    so ``asyncio.run`` cannot be called directly from a test body.
    """
    box: dict[str, Any] = {}

    def runner() -> None:
        try:
            box["value"] = asyncio.run(coro)
        except BaseException as e:  # noqa: BLE001 — re-raised on the test thread
            box["error"] = e

    t = Thread(target=runner)
    t.start()
    t.join()
    if "error" in box:
        raise box["error"]
    return box["value"]


def _reset_db(mock_port: int, seed: bool) -> ImportSummary | None:
    """Truncate the KB (and query log), then optionally re-import fixtures."""
    with SessionLocal() as db:
        db.execute(text("TRUNCATE chunks, documents, query_log"))
        db.commit()
    if not seed:
        return None
    return _run_in_thread(_import_fixtures(mock_port))


def _drill(page: Page, *names: str) -> None:
    """Drill one level at a time (phase 97 — client-side, no fetch,
    no URL change): each name is the EXACT text of the source/folder
    link at the current level."""
    for name in names:
        page.click(f'#folders-tbody a.folder-link:text-is("{name}")')


def _go_top(page: Page) -> None:
    """Back to the top level: the breadcrumb's top-level link (call
    between drills only — the breadcrumb is hidden at the top)."""
    page.locator("#kb-crumb a.kb-crumb-link").first.click()


# ---------------------------------------------------------------------------
# 1. Default-extensions import indexes the new formats (API view)
# ---------------------------------------------------------------------------


def test_quadlet_and_jinja_indexed(page: Page, app_url: str, mock_llm: int, db_ready: None) -> None:
    summary = _reset_db(mock_llm, seed=True)
    assert summary is not None
    # The four fixtures joined the default set (A9 revised 2026-08-27) —
    # the import needed no BOR_IMPORT_EXTENSIONS configuration at all.
    assert summary.added == 13, f"expected all 13 fixture docs, added {summary.added}"

    login(page, app_url)  # phase 16: the catalog is admin-only
    r = page.request.get(f"{app_url}/api/docs")
    assert r.status == 200
    by_path = {d["path"]: d for d in r.json()["documents"]}
    for path, stem in NEW_FORMAT_DOCS.items():
        doc = by_path.get(path)
        assert doc is not None, f"{path} missing from GET /api/docs"
        assert doc["chunks"] > 0, f"{path} indexed zero chunks"
        # No H1 → the stem is the title, exactly like the other
        # non-markdown formats.
        assert doc["title"] == stem, f"{path} title {doc['title']!r}, want stem {stem!r}"
        assert doc["source"] == "docs"


# ---------------------------------------------------------------------------
# 2. The Sources table renders a row (with path link) per new file
# ---------------------------------------------------------------------------


def test_sources_table_shows_them(page: Page, app_url: str, mock_llm: int, db_ready: None) -> None:
    _reset_db(mock_llm, seed=True)
    login(page, app_url)  # phase 16: the Sources catalog is admin-only
    for i, path in enumerate(NEW_FORMAT_DOCS):
        # Phase 97: the rows live at their folder levels — drill
        # source → folder(s) per path (the drill is the only change).
        if i > 0:
            _go_top(page)
        _drill(page, "docs", *path.rsplit("/", 1)[0].split("/"))
        row = page.locator("#docs-tbody tr", has_text=path)
        expect(row).to_have_count(1)
        link = row.locator("td:nth-child(2) a.doc-link")
        expect(link).to_have_count(1)
        # The full path is the link's accessible context (ellipsis is
        # visual only) — the same contract the other rows carry.
        expect(link).to_have_attribute("title", path)


# ---------------------------------------------------------------------------
# 3. The .container file's TOML is viewable in the modal (stem title)
# ---------------------------------------------------------------------------


def test_container_content_viewable(
    page: Page, app_url: str, mock_llm: int, db_ready: None
) -> None:
    _reset_db(mock_llm, seed=True)
    login(page, app_url)  # phase 16: the Sources catalog is admin-only

    # Phase 97: the row lives at its folder level — drill first.
    _drill(page, "docs", "homelab", "quadlet")
    row = page.locator("#docs-tbody tr", has_text="homelab/quadlet/compose.container")
    expect(row).to_have_count(1)
    link = row.locator("td:nth-child(2) a.doc-link")
    expect(link).to_have_attribute(
        "href", "/document.html?source=docs&path=homelab%2Fquadlet%2Fcompose.container"
    )
    expect(link).not_to_have_attribute("target")

    link.click()
    expect(page.locator(".doc-modal")).to_be_visible()
    # Stem title (no H1 in a quadlet unit file) + the extension badge.
    expect(page.locator("#doc-modal-title")).to_have_text("compose")
    expect(page.locator("#doc-modal-meta .format-badge")).to_have_text("container")
    # Non-markdown content renders as escaped monospace text in a pre —
    # the whole TOML, [Container] section and sentinel included.
    pre = page.locator("#doc-modal-content pre.doc-raw")
    expect(pre).to_have_count(1)
    expect(pre).to_contain_text("[Container]")
    expect(pre).to_contain_text("Image=docker.io/reese/compose-gateway:1.4.2")
    expect(pre).to_contain_text("RESE-QUADLET-SENTINEL-77aa")
    # Still on the Sources page: the modal is same-page (phase 26).
    assert page.url == app_url + "/sources.html"


# ---------------------------------------------------------------------------
# 4. A .j2 sentinel question is retrievable and honest-positive (A8)
# ---------------------------------------------------------------------------


def test_jinja_retrievable_not_deflected(
    page: Page, app_url: str, mock_llm: int, db_ready: None
) -> None:
    _reset_db(mock_llm, seed=True)
    page.set_default_timeout(30_000)
    login(page, app_url, next="/")  # phase 79: chat is require_user-gated
    page.fill("#message-input", JINJA_QUESTION)
    page.click("#send-btn")

    # The done event appends source chips — waiting on the .j2 chip means
    # the turn is finished and the retrieval doc reached the UI.
    chip = page.locator(".msg.brain .source-chip", has_text="templates/deploy.j2")
    expect(chip).to_have_count(1, timeout=30_000)

    # A8: LOW requires best cosine < threshold AND zero FTS hits — the
    # question's sentinel tokens FTS-match the .j2 chunk, so the gate is
    # honest-positive whatever the mock's cosine says.
    expect(page.locator(".msg.brain")).to_have_count(1)
    expect(page.locator(".msg.brain.is-deflected")).to_have_count(0)