"""End-to-end proof of the managed-sandbox runner HTTP-auth fix (#357 HTTP half).

A server-managed sandbox runner has no user credential of its own — only its
tunnel binding token. Under accounts/OIDC auth every runner->server HTTP
callback gates on ``require_user``, so before this fix those callbacks went out
bare and 401'd (the runner connected its tunnel but could never fetch its own
agent spec). The Option-C fix has the runner mint a short-lived owner JWT from
``POST /v1/runners/{id}/token`` (authenticated by its binding token) and present
it as ``Authorization: Bearer`` on every callback.

This test proves that fix works against a **real** ``omnigent server``
subprocess with accounts auth enabled, driving the runner's **real** outbound
code over a **real** TCP socket — no transports are stubbed:

* ``_make_auth_token_factory`` -> ``_make_managed_mint_factory`` ->
  ``_mint_managed_owner_token`` (a real ``httpx`` POST to the mint endpoint), and
* ``_RunnerDatabricksAuth`` on a real ``httpx.AsyncClient`` GET.

The only thing simulated is the managed-sandbox *condition* — no ``omnigent
login`` token and no Databricks config on disk — which is exactly what makes the
fix necessary (and what a fresh sandbox actually looks like).

The differential is asserted in one test, so the mint is provably the cause of
the flip:

* WITHOUT a minted token (``_RunnerDatabricksAuth(None)`` — precisely what
  ``_make_auth_token_factory`` returns for a managed sandbox on ``main``):
  ``GET /v1/sessions/{id}/agent/contents`` -> **401**.
* WITH the fix: the same GET -> **200**, returning the agent bundle.
"""

from __future__ import annotations

import asyncio
import os
import signal
import subprocess
import time
from collections.abc import Iterator
from pathlib import Path

import httpx
import pytest

from omnigent.runner._entry import _make_auth_token_factory, _RunnerDatabricksAuth
from omnigent.runner.identity import (
    OMNIGENT_INTERNAL_WS_ORIGIN,
    RUNNER_TUNNEL_BINDING_TOKEN_ENV_VAR,
    token_bound_runner_id,
)
from omnigent.server.oidc import mint_session_cookie
from omnigent.stores.conversation_store.sqlalchemy_store import (
    SqlAlchemyConversationStore,
)
from tests._helpers.compat import apply_server_env, compat_server_cwd, server_executable
from tests._helpers.live_server import find_free_port
from tests.server.helpers import build_agent_bundle

# Repo root — this file lives at tests/e2e/<name>.py.
_REPO_ROOT = Path(__file__).resolve().parents[2]

# 32-byte cookie secret (64 hex chars), shared between this test process and the
# server subprocess so (a) the accounts cookie we mint for the owner validates
# server-side and (b) the JWT the mint endpoint signs validates the same way.
_COOKIE_SECRET_HEX = "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a1b2"
_OWNER = "alice@example.com"
_BINDING_TOKEN = "e2e-managed-sandbox-binding-token"
_SERVER_HEALTH_TIMEOUT_S = 40.0


def _await_health(base_url: str, log_path: Path) -> None:
    """Poll ``/health`` until the server answers 200, or fail with the log tail.

    :param base_url: Server base URL, e.g. ``"http://localhost:58123"``.
    :param log_path: Server stdout/stderr log, tailed into the failure message.
    :returns: None.
    :raises RuntimeError: If the server doesn't answer within the deadline.
    """
    deadline = time.monotonic() + _SERVER_HEALTH_TIMEOUT_S
    while time.monotonic() < deadline:
        try:
            if httpx.get(f"{base_url}/health", timeout=2).status_code == 200:
                return
        except httpx.HTTPError:
            # Expected while the server is still booting (connection refused /
            # reset); keep polling until the deadline.
            pass
        time.sleep(0.5)
    tail = log_path.read_text()[-3000:] if log_path.exists() else "(no log)"
    raise RuntimeError(f"accounts server did not become healthy. Log:\n{tail}")


@pytest.fixture()
def accounts_server(tmp_path: Path) -> Iterator[tuple[str, str]]:
    """Run a real ``omnigent server`` subprocess with accounts auth enabled.

    Accounts mode is selected by ``OMNIGENT_AUTH_PROVIDER=accounts`` plus a
    shared cookie secret; the subprocess handles the full runtime lifecycle
    (migrations, DBOS, auth provider, permission store) exactly as a deployed
    server does. ``_maybe_prompt_first_admin`` no-ops without a TTY, so the
    boot is non-interactive.

    Deliberately independent of the session-scoped ``live_server`` fixture
    (which spawns a server + runner pair for the harness matrix): this test
    needs an accounts-auth server and no LLM, so it owns its own subprocess.

    :param tmp_path: Per-test temp dir for the DB, artifacts, and server log.
    :returns: ``(base_url, db_uri)`` — the running server's URL and the SQLite
        URI the test opens directly to bind the managed runner id.
    """
    port = find_free_port()
    db_path = tmp_path / "e2e.db"
    db_uri = f"sqlite:///{db_path}"
    artifact_dir = tmp_path / "artifacts"
    artifact_dir.mkdir()
    log_path = tmp_path / "server.log"
    base_url = f"http://localhost:{port}"

    env = {**os.environ}
    env["OMNIGENT_AUTH_PROVIDER"] = "accounts"
    env["OMNIGENT_ACCOUNTS_COOKIE_SECRET"] = _COOKIE_SECRET_HEX
    env["OMNIGENT_ACCOUNTS_BASE_URL"] = base_url
    # Force the accounts branch of the auth-source switch (an ambient OIDC
    # issuer in the environment would otherwise select oidc mode).
    env.pop("OMNIGENT_OIDC_ISSUER", None)
    # Import the server package from this worktree, not an installed copy.
    apply_server_env(env, _REPO_ROOT)

    log_handle = open(log_path, "w")  # noqa: SIM115 — handle lives for the subprocess
    proc = subprocess.Popen(
        [
            server_executable(),
            "-m",
            "omnigent.cli",
            "server",
            "--port",
            str(port),
            "--database-uri",
            db_uri,
            "--artifact-location",
            str(artifact_dir),
        ],
        env=env,
        cwd=compat_server_cwd(),
        stdout=log_handle,
        stderr=subprocess.STDOUT,
    )
    try:
        _await_health(base_url, log_path)
        yield base_url, db_uri
    finally:
        proc.send_signal(signal.SIGTERM)
        try:
            proc.wait(timeout=10)
        except subprocess.TimeoutExpired:
            proc.kill()
            proc.wait(timeout=5)
        log_handle.close()


async def _get_agent_contents(
    base_url: str,
    path: str,
    auth: _RunnerDatabricksAuth,
) -> httpx.Response:
    """Drive the runner's real callback client for one ``GET``.

    Builds the same ``httpx.AsyncClient`` the runner uses for its server
    callbacks (``auth=_RunnerDatabricksAuth(...)``, sentinel ``Origin``,
    redirects off) and issues a single request over a real socket.

    :param base_url: Live server base URL.
    :param path: Request path, e.g. ``"/v1/sessions/<id>/agent/contents"``.
    :param auth: The runner's httpx auth — ``_RunnerDatabricksAuth(None)`` for
        the bare (pre-fix) leg, or one wired to the managed-mint factory.
    :returns: The HTTP response.
    """
    async with httpx.AsyncClient(
        base_url=base_url,
        auth=auth,
        headers={"Origin": OMNIGENT_INTERNAL_WS_ORIGIN},
        follow_redirects=False,
        timeout=30.0,
    ) as client:
        return await client.get(path)


def test_managed_runner_callback_authenticates_end_to_end(
    accounts_server: tuple[str, str],
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    """A managed runner's HTTP callback 401s bare and 200s with a minted token.

    End-to-end against a live accounts-auth server, driving the runner's real
    outbound auth code over a real socket. Reverting the runner-side managed
    mint tier (or the server-side mint endpoint) turns the 200 assertion back
    into a 401 — that is the exact gap this change closes.

    :param accounts_server: ``(base_url, db_uri)`` from the live-server fixture.
    :param monkeypatch: Puts this process into the managed-sandbox posture
        (binding token + server URL present; no user credential resolvable).
    :returns: None.
    """
    base_url, db_uri = accounts_server

    # 1. Alice owns a real session. Her identity comes from a directly-minted
    #    accounts cookie signed with the server's shared secret — the same JWT
    #    the password login flow issues; only the password dance is skipped.
    #    The session-create, agent registration, and owner grant are all real.
    owner_cookie = mint_session_cookie(_OWNER, bytes.fromhex(_COOKIE_SECRET_HEX), 8, "accounts")
    bundle = build_agent_bundle(name="e2e-managed-runner-agent")
    with httpx.Client(base_url=base_url, timeout=30.0) as http:
        create = http.post(
            "/v1/sessions",
            headers={
                "Authorization": f"Bearer {owner_cookie}",
                "Origin": OMNIGENT_INTERNAL_WS_ORIGIN,
            },
            data={"metadata": "{}"},
            files={"bundle": ("agent.tar.gz", bundle, "application/gzip")},
        )
    assert create.status_code in (200, 201), (create.status_code, create.text)
    session_id = create.json()["session_id"]

    # 2. Bind a managed runner id to Alice's session — what the managed-launch
    #    path does at spawn time via replace_runner_id. WAL journaling + a 20s
    #    busy_timeout make this cross-process write safe against the running
    #    server, which then resolves runner_id -> owner from this row.
    runner_id = token_bound_runner_id(_BINDING_TOKEN)
    SqlAlchemyConversationStore(db_uri).replace_runner_id(session_id, runner_id)

    # 3. Put this process in a managed-sandbox posture: the runner holds ONLY
    #    its binding token and the server URL — no omnigent-login token, no
    #    Databricks config. Forcing both credential sources to miss is what a
    #    fresh sandbox actually is, and it routes _make_auth_token_factory to
    #    the managed-mint tier under test.
    from omnigent.inner.databricks_executor import DatabricksAuthError

    def _no_databricks_creds(*args: object, **kwargs: object) -> tuple[object, str]:
        """Stand in for _resolve_databricks_auth in a credential-less sandbox."""
        raise DatabricksAuthError("managed sandbox has no Databricks config")

    monkeypatch.setenv("RUNNER_SERVER_URL", base_url)
    monkeypatch.setenv(RUNNER_TUNNEL_BINDING_TOKEN_ENV_VAR, _BINDING_TOKEN)
    monkeypatch.setattr("omnigent.cli_auth.load_token", lambda _url: None)
    monkeypatch.setattr(
        "omnigent.inner.databricks_executor._resolve_databricks_auth",
        _no_databricks_creds,
    )

    contents_path = f"/v1/sessions/{session_id}/agent/contents"

    # 4a. Pre-fix behavior: a managed sandbox on main resolves no credential,
    #     so _make_auth_token_factory returns None and the callback goes out
    #     with no bearer. require_user rejects it.
    bare = asyncio.run(_get_agent_contents(base_url, contents_path, _RunnerDatabricksAuth(None)))
    assert bare.status_code == 401, (bare.status_code, bare.text)

    # 4b. With the fix: the factory installs the managed-mint tier, mints a
    #     short-lived owner JWT from the binding token (a real POST to the mint
    #     endpoint at construction), and presents it on the callback.
    factory = _make_auth_token_factory()
    assert factory is not None, (
        "managed-mint factory should install for a managed sandbox "
        "(binding token + server URL present, no user credential)"
    )
    authed = asyncio.run(
        _get_agent_contents(base_url, contents_path, _RunnerDatabricksAuth(factory))
    )
    assert authed.status_code == 200, (authed.status_code, authed.text)
    # The minted owner token resolved to Alice, who owns the session, so the
    # real agent bundle comes back.
    assert authed.headers.get("X-Agent-Name")
    assert authed.content[:2] == b"\x1f\x8b", "expected a gzip agent bundle body"