"""A real delegation over the Anthropic passthrough: scoped sub-task in,
working code and a structured handback out."""

import io
from pathlib import Path

import pytest

from nisse_core.execution.ssh import SSHHost
from nisse_core.models.llm import AnthropicPassthroughClient
from nisse_core.oplog import OpLog
from nisse_dev.delegation import Caps, Delegation
from nisse_dev.git import GitRepo
from nisse_dev.state import StateStore
from nisse_dev.tools import Workspace

pytestmark = pytest.mark.integration

BRIEF = """Create `slugify.py` in the workspace root containing a function
`slugify(text)` that lowercases the text and replaces every run of
non-alphanumeric characters with a single hyphen, with no leading or trailing
hyphen. Then create `test_slugify.py` with at least two assertions covering
it, and run `python -m pytest test_slugify.py -q` until it passes."""


def build(
    ssh_host: SSHHost,
    tmp_path: Path,
    caps: Caps,
    client: AnthropicPassthroughClient,
    model: str,
) -> tuple[Delegation, GitRepo, StateStore]:
    repo = GitRepo(ssh_host, tmp_path / "work")
    repo.init()
    repo.configure_identity("nisse-dev-testing", "n@t.test")
    (repo.root / "README.md").write_text("sandbox\n")
    repo.commit_all("seed")
    store = StateStore(tmp_path / "state.db", oplog=OpLog("nisse-dev", io.StringIO()))
    delegation = Delegation(
        client,
        store,
        Workspace(ssh_host, repo.root, timeout_s=60),
        repo,
        model=model,
        caps=caps,
    )
    return delegation, repo, store


def test_delegate_completes_a_scoped_subtask(
    tmp_path: Path,
    passthrough: AnthropicPassthroughClient,
    live_model: str,
    ssh_host: SSHHost,
) -> None:
    delegation, repo, store = build(
        ssh_host, tmp_path, Caps(turns=12, wall_clock_s=300.0), passthrough, live_model
    )

    result = delegation.run(
        store.transcript("t", "helper"), brief=BRIEF, branch="live/delegation-1"
    )

    assert result.usable, f"delegation did not hand back: {result.status} {result.note}"
    assert (repo.root / "slugify.py").exists()

    # The handback is the entire interface back, so it must actually say
    # something in each part rather than be structurally present but empty.
    handback = result.handback
    assert handback is not None
    assert len(handback.changed) > 10
    assert len(handback.now_true) > 10
    assert len(handback.next) > 5

    # The delegate's own work is on its branch, and it really runs.
    assert repo.current_branch() == "live/delegation-1"
    check = Workspace(ssh_host, repo.root, timeout_s=60).run_command(
        "python -m pytest test_slugify.py -q"
    )
    assert check.success, f"delegate's own tests do not pass: {check.result[:400]}"


def test_a_cap_breach_discards_the_work(
    tmp_path: Path,
    passthrough: AnthropicPassthroughClient,
    live_model: str,
    ssh_host: SSHHost,
) -> None:
    # One turn cannot finish the brief, so this exercises the abort path
    # against a real model rather than a scripted one.
    delegation, repo, store = build(
        ssh_host, tmp_path, Caps(turns=1, wall_clock_s=120.0), passthrough, live_model
    )

    result = delegation.run(
        store.transcript("t", "helper"), brief=BRIEF, branch="live/delegation-2"
    )

    assert not result.usable
    assert result.status == "capped"
    assert repo.current_branch() == "main"
    assert not (repo.root / "slugify.py").exists()