"""Step definitions for project_context_cli_coverage_boost.feature.

Targets uncovered lines in
``src/cleveragents/cli/commands/project_context.py``.
"""

from __future__ import annotations

import json as _json
from io import StringIO
from typing import Any
from unittest.mock import MagicMock, patch

from behave import given, then, when  # type: ignore[import-untyped]
from sqlalchemy import create_engine, text
from sqlalchemy.orm import Session, sessionmaker

# ------------------------------------------------------------------
# Session wrapper - prevents the production ``close()`` from
# destroying our shared in-memory session.
# ------------------------------------------------------------------


class _SafeSession:
    """Thin wrapper that prevents ``close()`` from destroying the shared session.

    Instead of a pure no-op, ``close()`` issues a ``rollback()`` on the
    underlying session to reset any dirty/rolled-back state accumulated
    during the previous call.  This prevents phantom failures when the
    production error path (e.g. ``_save_policy_json`` rollback) leaves
    the session in an invalidated state.
    """

    def __init__(self, real: Session) -> None:
        object.__setattr__(self, "_real", real)

    def close(self) -> None:
        """Reset session state without closing the underlying connection."""
        real: Session = object.__getattribute__(self, "_real")
        real.rollback()

    def __getattr__(self, name: str) -> Any:
        return getattr(object.__getattribute__(self, "_real"), name)

    def __setattr__(self, name: str, value: Any) -> None:
        setattr(object.__getattribute__(self, "_real"), name, value)


def _make_session_factory(context: Any) -> tuple[Any, Any]:
    from cleveragents.infrastructure.database.models import Base

    engine = create_engine(
        "sqlite:///:memory:",
        echo=False,
        connect_args={"check_same_thread": False},
    )
    Base.metadata.create_all(engine)
    real = sessionmaker(
        bind=engine, expire_on_commit=False, autoflush=True, autocommit=False
    )()
    wrapper = _SafeSession(real)
    return engine, lambda: wrapper


# ------------------------------------------------------------------
# Mock container
# ------------------------------------------------------------------


def _mock_container(context: Any) -> MagicMock:
    from cleveragents.application.services.context_tiers import ContextTierService

    mc = MagicMock()
    mc.namespaced_project_repo.return_value = context.cb_project_repo
    mc.session_factory.return_value = context.cb_session_factory
    if not hasattr(context, "cb_tier_service"):
        context.cb_tier_service = ContextTierService()
    mc.context_tier_service.return_value = context.cb_tier_service
    return mc


def _run(context: Any, func: Any, *args: Any, **kwargs: Any) -> None:

    import typer
    from rich.console import Console as RichConsole

    mc = _mock_container(context)
    buf = StringIO()
    test_console = RichConsole(
        file=buf,
        no_color=True,
        highlight=False,
        force_terminal=False,
        width=500,
        soft_wrap=True,
    )

    def _test_format_output(data, format_type):
        import sys as _sys
        from io import StringIO as _SIO

        from cleveragents.cli.formatting import format_output as _fo

        _b = _SIO()
        _old = _sys.stdout
        _sys.stdout = _b
        try:
            _r = _fo(data, format_type)
        finally:
            _sys.stdout = _old
        return _r or _b.getvalue().rstrip("\n")

    with (
        patch(
            "cleveragents.application.container.get_container",
            return_value=mc,
        ),
        patch(
            "cleveragents.cli.commands.project_context.console",
            test_console,
        ),
        patch(
            "cleveragents.cli.commands.project_context.err_console",
            test_console,
        ),
        patch(
            "cleveragents.cli.commands.project_context.format_output",
            _test_format_output,
        ),
    ):
        try:
            func(*args, **kwargs)
            context.cb_exit_code = 0
        except typer.Exit as exc:
            context.cb_exit_code = exc.exit_code
        except typer.Abort:
            context.cb_exit_code = 1

    context.cb_output = buf.getvalue()


# ------------------------------------------------------------------
# Background
# ------------------------------------------------------------------


@given("a coverage-boost in-memory database is initialized")
def step_cb_init_db(context: Any) -> None:
    from cleveragents.infrastructure.database.repositories import (
        NamespacedProjectRepository,
    )

    engine, sf = _make_session_factory(context)
    context.cb_engine = engine
    context.cb_session_factory = sf
    context.cb_project_repo = NamespacedProjectRepository(session_factory=sf)
    context.cb_output = ""
    context.cb_exit_code = 0


@given('a project "{name}" exists for coverage boost')
def step_cb_create_project(context: Any, name: str) -> None:
    from cleveragents.domain.models.core.project import (
        NamespacedProject,
        parse_namespaced_name,
    )

    parsed = parse_namespaced_name(name)
    proj = NamespacedProject(name=parsed.name, namespace=parsed.namespace)
    context.cb_project_repo.create(proj)


# ------------------------------------------------------------------
# Helper: direct DB operations for seeding
# ------------------------------------------------------------------


def _seed_policy_blob(context: Any, ns: str, blob: dict) -> None:
    """Write a raw JSON blob into ns_projects.context_policy_json."""
    session = context.cb_session_factory()
    session.execute(
        text(
            "UPDATE ns_projects SET context_policy_json = :blob "
            "WHERE namespaced_name = :ns"
        ),
        {"blob": _json.dumps(blob), "ns": ns},
    )
    session.commit()


def _load_raw_blob(context: Any, ns: str) -> dict | None:
    session = context.cb_session_factory()
    row = session.execute(
        text("SELECT context_policy_json FROM ns_projects WHERE namespaced_name = :ns"),
        {"ns": ns},
    ).fetchone()
    if row is None or row[0] is None:
        return None
    return _json.loads(row[0])


# ------------------------------------------------------------------
# Given steps
# ------------------------------------------------------------------


@given('I seed ACMS config for "{project}" with hot_max_tokens {val:d}')
def step_seed_acms_hot(context: Any, project: str, val: int) -> None:
    from cleveragents.cli.commands.project_context import _default_acms_config

    blob = {"acms_config": {**_default_acms_config(), "hot_max_tokens": val}}
    _seed_policy_blob(context, project, blob)


@given('I seed ACMS config for "{project}" with temporal_scope "{scope}"')
def step_seed_acms_temporal(context: Any, project: str, scope: str) -> None:
    from cleveragents.cli.commands.project_context import _default_acms_config

    blob = {"acms_config": {**_default_acms_config(), "temporal_scope": scope}}
    _seed_policy_blob(context, project, blob)


@given('the tier service has fragments for "{project}" with strategy metadata')
def step_seed_tier_fragments(context: Any, project: str) -> None:
    from cleveragents.application.services.context_tiers import ContextTierService
    from cleveragents.domain.models.acms.tiers import ContextTier, TieredFragment

    svc = ContextTierService()
    svc.store(
        TieredFragment(
            fragment_id="frag-alpha",
            content="Alpha content for testing tier retrieval",
            tier=ContextTier.HOT,
            resource_id="res:file-alpha",
            project_name=project,
            token_count=30,
            access_count=5,
            metadata={"strategy": "tier_a"},
        )
    )
    svc.store(
        TieredFragment(
            fragment_id="frag-beta",
            content="Beta content with different strategy",
            tier=ContextTier.WARM,
            resource_id="res:file-beta",
            project_name=project,
            token_count=20,
            access_count=0,
            metadata={"strategy": "tier_b"},
        )
    )
    context.cb_tier_service = svc
    context.cb_stored_fragment_count = 2


@given('the tier service has large fragments for "{project}" exceeding budget')
def step_seed_large_fragments(context: Any, project: str) -> None:
    from cleveragents.application.services.context_tiers import ContextTierService
    from cleveragents.domain.models.acms.tiers import ContextTier, TieredFragment

    svc = ContextTierService()
    # First fragment: 60 tokens, long content, access_count > 0
    svc.store(
        TieredFragment(
            fragment_id="big-1",
            content="A" * 200,  # long content -> triggers truncation (line 339)
            tier=ContextTier.HOT,
            resource_id="res:big1",
            project_name=project,
            token_count=60,
            access_count=12,  # > 0 triggers relevance calc (line 344)
        )
    )
    # Second fragment: 60 tokens -> total would be 120 > budget of 100
    svc.store(
        TieredFragment(
            fragment_id="big-2",
            content="Short",  # short content -> no truncation
            tier=ContextTier.HOT,
            resource_id="res:big2",
            project_name=project,
            token_count=60,
            access_count=0,
        )
    )
    context.cb_tier_service = svc
    context.cb_stored_fragment_count = 2


# ------------------------------------------------------------------
# When steps
# ------------------------------------------------------------------


@when('I read the stored policy for "{project}"')
def step_read_policy(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import (
        _read_acms_config,
        _read_policy,
    )

    context.cb_policy = _read_policy(context.cb_session_factory, project)
    context.cb_acms = _read_acms_config(context.cb_session_factory, project)


@when('I write a policy for "{project}" without explicit ACMS config')
def step_write_policy_no_acms(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import _write_policy
    from cleveragents.domain.models.core.context_policy import ProjectContextPolicy

    policy = ProjectContextPolicy()
    # acms_config=None triggers the preservation branch (lines 199-201)
    _write_policy(context.cb_session_factory, project, policy, acms_config=None)


@when(
    'I run coverage-boost context set on "{project}" with view "{view}" and include-resource "{res}"'
)
def step_cb_set_include(context: Any, project: str, view: str, res: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(context, context_set, project=project, view=view, include_resource=[res])


@when(
    'I run coverage-boost context set on "{project}" with view "{view}" and clear flag'
)
def step_cb_set_clear(context: Any, project: str, view: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(context, context_set, project=project, view=view, clear=True)


@when('I run coverage-boost context set on "{project}" with default_depth "{depth}"')
def step_cb_set_depth_string(context: Any, project: str, depth: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(context, context_set, project=project, view="default", default_depth=depth)


@when(
    'I run coverage-boost context set on "{project}" with execution_environment "{env}"'
)
def step_cb_set_exec_env(context: Any, project: str, env: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(
        context,
        context_set,
        project=project,
        view="default",
        execution_environment=env,
    )


@when(
    'I run coverage-boost context set on "{project}" with view "{view}" include-resource "{res}" and format "{fmt}"'
)
def step_cb_set_json_fmt(
    context: Any, project: str, view: str, res: str, fmt: str
) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(
        context,
        context_set,
        project=project,
        view=view,
        include_resource=[res],
        output_format=fmt,
    )


@when('I run coverage-boost context set on "{project}" with temporal_scope "{scope}"')
def step_cb_set_temporal(context: Any, project: str, scope: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(context, context_set, project=project, view="default", temporal_scope=scope)


@when('I run coverage-boost context set on "{project}" with all ACMS overrides')
def step_cb_set_all_acms(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import context_set

    _run(
        context,
        context_set,
        project=project,
        view="default",
        hot_max_tokens=1234,
        warm_max_decisions=111,
        cold_max_decisions=222,
        query_limit=50,
        summarize=False,
        summary_max_tokens=999,
        strategy=["bfs", "dfs"],
        default_breadth=7,
        default_depth="4",
        skeleton_ratio=0.5,
        temporal_scope="recent",
        auto_refresh=False,
    )


@when('I run coverage-boost context show on "{project}" with view "{view}"')
def step_cb_show_view(context: Any, project: str, view: str) -> None:
    from cleveragents.cli.commands.project_context import context_show

    _run(context, context_show, project=project, view=view)


@when(
    'I run coverage-boost context inspect on "{project}" with strategy filter "{strat}"'
)
def step_cb_inspect_strategy(context: Any, project: str, strat: str) -> None:
    from cleveragents.cli.commands.project_context import context_inspect

    _run(context, context_inspect, project=project, strategy_filter=strat)


@when('I run coverage-boost context inspect on "{project}" with focus "{uri}"')
def step_cb_inspect_focus(context: Any, project: str, uri: str) -> None:
    from cleveragents.cli.commands.project_context import context_inspect

    _run(context, context_inspect, project=project, focus=[uri])


@when(
    'I run coverage-boost context inspect on "{project}" with breadth {b:d} and depth "{d}"'
)
def step_cb_inspect_breadth_depth(context: Any, project: str, b: int, d: str) -> None:
    from cleveragents.cli.commands.project_context import context_inspect

    _run(context, context_inspect, project=project, breadth=b, depth=d)


@when('I run coverage-boost context inspect on "{project}" with view "{view}"')
def step_cb_inspect_view(context: Any, project: str, view: str) -> None:
    from cleveragents.cli.commands.project_context import context_inspect

    _run(context, context_inspect, project=project, view=view)


@when('I run coverage-boost context simulate on "{project}" with defaults')
def step_cb_simulate(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(context, context_simulate, project=project)


@when('I run coverage-boost context simulate on "{project}" with budget {b:d}')
def step_cb_simulate_budget(context: Any, project: str, b: int) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(context, context_simulate, project=project, budget=b)


@when('I run coverage-boost context simulate on "{project}" in rich format')
def step_cb_simulate_rich(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(context, context_simulate, project=project, output_format="rich")


@when('I run coverage-boost context simulate on "{project}" with view "{view}"')
def step_cb_simulate_view(context: Any, project: str, view: str) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(context, context_simulate, project=project, view=view)


@when('I run coverage-boost context simulate on "{project}" with focus "{uri}"')
def step_cb_simulate_focus(context: Any, project: str, uri: str) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(context, context_simulate, project=project, focus=[uri])


@when(
    'I run coverage-boost context simulate on "{project}" with strategy hints "{hints}"'
)
def step_cb_simulate_strategies(context: Any, project: str, hints: str) -> None:
    from cleveragents.cli.commands.project_context import context_simulate

    _run(
        context,
        context_simulate,
        project=project,
        strategy_hint=hints.split(","),
    )


# ------------------------------------------------------------------
# Then steps
# ------------------------------------------------------------------


@then("the policy should be a fresh default policy")
def step_assert_default_policy(context: Any) -> None:
    from cleveragents.domain.models.core.context_policy import ProjectContextPolicy

    default = ProjectContextPolicy()
    assert context.cb_policy.default_view == default.default_view
    assert context.cb_policy.strategize_view is None
    assert context.cb_policy.execute_view is None
    assert context.cb_policy.apply_view is None


@then("the ACMS config should equal the defaults")
def step_assert_default_acms(context: Any) -> None:
    from cleveragents.cli.commands.project_context import _default_acms_config

    expected = _default_acms_config()
    assert context.cb_acms == expected, f"{context.cb_acms} != {expected}"


@then("the stored project-context ACMS config hot_max_tokens should be {val}")
def step_assert_acms_hot(context: Any, val: str) -> None:
    blob = _load_raw_blob(context, "local/cov-app")
    assert blob is not None, "No policy blob stored"
    assert blob.get("acms_config", {}).get("hot_max_tokens") == int(val)


@then("the coverage-boost command should succeed")
def step_cb_ok(context: Any) -> None:
    assert context.cb_exit_code == 0, (
        f"Expected exit 0, got {context.cb_exit_code}. Output: {context.cb_output}"
    )


@then("the coverage-boost command should have exit code {code:d}")
def step_cb_exit(context: Any, code: int) -> None:
    assert context.cb_exit_code == code, (
        f"Expected exit {code}, got {context.cb_exit_code}. Output: {context.cb_output}"
    )


@then("the stored coverage-boost default view include_resources should be empty")
def step_cb_default_empty(context: Any) -> None:
    from cleveragents.cli.commands.project_context import _read_policy

    policy = _read_policy(context.cb_session_factory, "local/cov-app")
    assert policy.default_view.include_resources == [], (
        f"Expected empty, got {policy.default_view.include_resources}"
    )


@then('the stored ACMS config default_depth should be "{val}"')
def step_assert_acms_depth_str(context: Any, val: str) -> None:
    blob = _load_raw_blob(context, "local/cov-app")
    assert blob is not None
    assert blob.get("acms_config", {}).get("default_depth") == val


@then('the stored execution_environment should be "{env}"')
def step_assert_exec_env(context: Any, env: str) -> None:
    blob = _load_raw_blob(context, "local/cov-app")
    assert blob is not None, "No policy blob stored"
    assert blob.get("execution_environment") == env, (
        f"Expected '{env}', got {blob.get('execution_environment')}"
    )


@then('the coverage-boost output should contain "{text}"')
def step_cb_output_contains(context: Any, text: str) -> None:
    assert text in context.cb_output, f"'{text}' not in output: {context.cb_output!r}"


@then("the coverage-boost output should be valid JSON")
def step_cb_output_json(context: Any) -> None:
    try:
        _json.loads(context.cb_output.strip())
    except _json.JSONDecodeError as exc:
        raise AssertionError(
            f"Output is not valid JSON: {exc}\nOutput: {context.cb_output!r}"
        ) from exc


@then("the simulation should have fewer fragments than stored")
def step_cb_fewer_fragments(context: Any) -> None:
    # The output is rich format; we already checked success.
    # Just verify that the budget constrained the output
    # (budget=100, first frag=60 tokens, second would overflow).
    # We additionally verify via the internal function.
    from cleveragents.cli.commands.project_context import (
        _default_acms_config,
        _simulate_context_assembly,
    )

    assembled = _simulate_context_assembly(
        project_name="local/cov-app",
        acms_config=_default_acms_config(),
        budget_tokens=100,
    )
    assert len(assembled.fragments) < context.cb_stored_fragment_count, (
        f"Expected fewer than {context.cb_stored_fragment_count}, "
        f"got {len(assembled.fragments)}"
    )


# ------------------------------------------------------------------
# flush() → commit() regression test: real separate sessions
# ------------------------------------------------------------------


@when(
    'I save a policy for "{project}" via a real session factory and read it back via a separate session'
)
def step_save_and_read_real_sessions(context: Any, project: str) -> None:
    """Exercise _save_policy_json + _load_policy_json via real sessions.

    Uses a file-based SQLite database so that separate sessions truly
    see each other's committed data.  The _SafeSession wrapper is NOT
    used here — if production code uses flush() instead of commit(),
    the second session will not see the written data.
    """
    import os
    import tempfile

    from sqlalchemy import create_engine, text
    from sqlalchemy.orm import sessionmaker as real_sessionmaker

    from cleveragents.cli.commands.project_context import (
        _load_policy_json,
        _save_policy_json,
    )
    from cleveragents.infrastructure.database.models import Base

    # Create a file-based SQLite DB so separate sessions are independent.
    fd, db_path = tempfile.mkstemp(suffix=".db")
    os.close(fd)
    db_url = f"sqlite:///{db_path}"

    # M4: Use separate engines so that flush() vs commit() visibility
    # is truly tested — a shared engine/pool could serve the same
    # underlying connection, masking the difference.
    engine_seed = create_engine(db_url, echo=False)
    engine_write = create_engine(db_url, echo=False)
    engine_read = create_engine(db_url, echo=False)
    try:
        Base.metadata.create_all(engine_seed)
        factory_write = real_sessionmaker(bind=engine_write, expire_on_commit=False)
        factory_read = real_sessionmaker(bind=engine_read, expire_on_commit=False)

        # Seed the project row so UPDATE has a target.
        from datetime import UTC, datetime

        now = datetime.now(tz=UTC).isoformat()
        session = real_sessionmaker(bind=engine_seed, expire_on_commit=False)()
        try:
            session.execute(
                text(
                    "INSERT INTO ns_projects (namespaced_name, namespace, tags_json, created_at, updated_at) "
                    "VALUES (:ns, :nsp, :tags, :ca, :ua)"
                ),
                {"ns": project, "nsp": "local", "tags": "[]", "ca": now, "ua": now},
            )
            session.commit()
        finally:
            session.close()

        # Write policy via production code (uses commit) with write-only factory.
        policy_dict = {
            "regression_marker": "commit_test",
            "acms_config": {"hot_max_tokens": 42},
        }
        _save_policy_json(factory_write, project, policy_dict)

        # Read back via a SEPARATE engine/factory to prove commit visibility.
        loaded = _load_policy_json(factory_read, project)

        context.cb_regression_loaded = loaded
    finally:
        engine_seed.dispose()
        engine_write.dispose()
        engine_read.dispose()
        # Clean up the DB file and any WAL/SHM journal files left by
        # SQLite WAL mode to avoid leaking temp files.
        for suffix in ("", "-wal", "-shm"):
            path = db_path + suffix
            if os.path.exists(path):
                os.unlink(path)


@then("the policy read from the separate session should contain the saved data")
def step_assert_regression_data(context: Any) -> None:
    loaded = context.cb_regression_loaded
    assert loaded is not None, "Policy was None — data did not persist across sessions"
    assert loaded.get("regression_marker") == "commit_test", (
        f"Expected 'commit_test', got {loaded.get('regression_marker')}"
    )
    assert loaded.get("acms_config", {}).get("hot_max_tokens") == 42, (
        f"Expected hot_max_tokens=42, got {loaded.get('acms_config', {}).get('hot_max_tokens')}"
    )


@then("the stored ACMS config should reflect all overrides")
def step_assert_all_acms(context: Any) -> None:
    blob = _load_raw_blob(context, "local/cov-app")
    assert blob is not None
    acms = blob.get("acms_config", {})
    assert acms["hot_max_tokens"] == 1234
    assert acms["warm_max_decisions"] == 111
    assert acms["cold_max_decisions"] == 222
    assert acms["query_limit"] == 50
    assert acms["summarize"] is False
    assert acms["summary_max_tokens"] == 999
    assert acms["strategies"] == ["bfs", "dfs"]
    assert acms["default_breadth"] == 7
    assert acms["default_depth"] == 4  # "4" is parseable as int
    assert acms["skeleton_ratio"] == 0.5
    assert acms["temporal_scope"] == "recent"
    assert acms["auto_refresh"] is False


# ------------------------------------------------------------------
# Rollback path test for _save_policy_json (P3-14)
# ------------------------------------------------------------------


@when("I attempt to save a policy with a commit that will fail")
def step_save_policy_commit_fail(context: Any) -> None:
    """Force a commit failure and verify the rollback path.

    Uses the existing ``context.cb_session_factory`` (set up by the
    Background step which already seeded the ``local/cov-app`` project
    row) to ensure the UPDATE actually modifies data.  Monkey-patches
    ``commit()`` on the underlying real session to simulate a commit
    failure.
    """
    from cleveragents.cli.commands.project_context import _save_policy_json

    factory = context.cb_session_factory

    # Get the _SafeSession wrapper and the real session underneath.
    safe_session = factory()
    real: Session = object.__getattribute__(safe_session, "_real")
    original_commit = real.commit

    def failing_commit() -> None:
        raise RuntimeError("Simulated commit failure")

    real.commit = failing_commit  # type: ignore[assignment]

    context.cb_rollback_exception = None
    try:
        _save_policy_json(factory, "local/cov-app", {"marker": "rollback_test"})
    except RuntimeError as exc:
        context.cb_rollback_exception = exc
    finally:
        # Restore original commit so subsequent scenarios can use it.
        real.commit = original_commit  # type: ignore[assignment]

    # Store the session for dirty-state check.
    context.cb_rollback_session = real


@then("the original commit exception should be re-raised")
def step_assert_commit_exception_reraised(context: Any) -> None:
    exc = context.cb_rollback_exception
    assert exc is not None, "_save_policy_json did not re-raise the commit exception"
    assert "Simulated commit failure" in str(exc), (
        f"Expected 'Simulated commit failure', got: {exc}"
    )


@then("the session should not be in a dirty state after the failure")
def step_assert_session_clean_after_rollback(context: Any) -> None:
    session: Session = context.cb_rollback_session
    # After rollback, the session should have no pending changes.
    assert not session.dirty, "Session has dirty objects after rollback"
    assert not session.new, "Session has new objects after rollback"


# ------------------------------------------------------------------
# Nonexistent project test for _save_policy_json (P3-15)
# ------------------------------------------------------------------


@when('I save a policy for a nonexistent project "{project}"')
def step_save_policy_nonexistent(context: Any, project: str) -> None:
    """Call _save_policy_json for a project that has no ns_projects row."""
    from cleveragents.cli.commands.project_context import _save_policy_json

    context.cb_nonexistent_exception = None
    try:
        _save_policy_json(
            context.cb_session_factory,
            project,
            {"marker": "nonexistent_test"},
        )
    except Exception as exc:
        context.cb_nonexistent_exception = exc


@then("the save should complete without error")
def step_assert_save_no_error(context: Any) -> None:
    exc = context.cb_nonexistent_exception
    # _save_policy_json does not currently check rowcount, so it
    # completes without error even when 0 rows are affected.
    assert exc is None, f"_save_policy_json raised an unexpected error: {exc}"


@then('the policy should not be retrievable for "{project}"')
def step_assert_policy_not_retrievable(context: Any, project: str) -> None:
    from cleveragents.cli.commands.project_context import _load_policy_json

    loaded = _load_policy_json(context.cb_session_factory, project)
    assert loaded is None, f"Expected None for nonexistent project, got: {loaded}"