"""ASV benchmarks for Resource CLI tree/inspect command overhead.

Measures the performance of:
- Tree rendering for a resource with no children
- Tree rendering for a resource with multiple children
- Inspect command rendering
- Link-child / unlink-child command throughput
"""

from __future__ import annotations

import importlib
import sys
from datetime import UTC, datetime
from pathlib import Path
from unittest.mock import MagicMock, patch

# Ensure the local *source* tree is importable even when ASV has an
# older build of the package installed.
_SRC = str(Path(__file__).resolve().parents[1] / "src")
if _SRC not in sys.path:
    sys.path.insert(0, _SRC)

import cleveragents  # noqa: E402

importlib.reload(cleveragents)

from typer.testing import CliRunner  # noqa: E402

from cleveragents.cli.commands.resource import app as resource_app  # noqa: E402
from cleveragents.domain.models.core.resource import (  # noqa: E402
    PhysVirt,
    Resource,
    ResourceCapabilities,
)

_runner = CliRunner()


def _mock_resource(
    resource_id: str = "01HBENCH0000000000RES0RCE0",
    name: str = "local/bench-res",
    type_name: str = "git-checkout",
) -> Resource:
    return Resource(
        resource_id=resource_id,
        name=name,
        resource_type_name=type_name,
        classification=PhysVirt.PHYSICAL,
        description="Benchmark resource",
        properties={"path": "/tmp/bench"},
        location="/tmp/bench",
        content_hash=None,
        sandbox_strategy=None,
        capabilities=ResourceCapabilities(),
        created_at=datetime.now(tz=UTC),
        updated_at=datetime.now(tz=UTC),
    )


def _mock_tree_node(
    resource: Resource,
    children: list[dict[str, object]] | None = None,
) -> dict[str, object]:
    return {
        "resource": resource,
        "children": children or [],
    }


class ResourceTreeSuite:
    """Benchmark resource tree command throughput."""

    def setup(self) -> None:
        """Set up mock service."""
        root = _mock_resource()
        child1 = _mock_resource(
            "01HBENCH0000000000CHJKD001", "local/child-1", "fs-directory"
        )
        child2 = _mock_resource(
            "01HBENCH0000000000CHJKD002", "local/child-2", "fs-directory"
        )
        tree = [
            _mock_tree_node(
                root,
                [
                    _mock_tree_node(child1),
                    _mock_tree_node(child2),
                ],
            )
        ]
        self._mock_service = MagicMock()
        self._mock_service.get_resource_tree.return_value = tree
        self._mock_service.show_resource.return_value = root
        self._patcher = patch(
            "cleveragents.cli.commands.resource._get_registry_service",
            return_value=self._mock_service,
        )
        self._patcher.start()

    def teardown(self) -> None:
        self._patcher.stop()

    def time_tree_default(self) -> None:
        """Benchmark tree with default settings."""
        _runner.invoke(resource_app, ["tree", "local/bench-res"])

    def time_tree_json(self) -> None:
        """Benchmark tree with JSON output."""
        _runner.invoke(resource_app, ["tree", "local/bench-res", "--format", "json"])

    def time_tree_depth(self) -> None:
        """Benchmark tree with depth limit."""
        _runner.invoke(resource_app, ["tree", "local/bench-res", "--depth", "1"])


class ResourceInspectSuite:
    """Benchmark resource inspect command throughput."""

    def setup(self) -> None:
        """Set up mock service."""
        res = _mock_resource()
        tree = [_mock_tree_node(res)]
        self._mock_service = MagicMock()
        self._mock_service.show_resource.return_value = res
        self._mock_service.get_resource_tree.return_value = tree
        self._patcher = patch(
            "cleveragents.cli.commands.resource._get_registry_service",
            return_value=self._mock_service,
        )
        self._patcher.start()

    def teardown(self) -> None:
        self._patcher.stop()

    def time_inspect_default(self) -> None:
        """Benchmark inspect with default settings."""
        _runner.invoke(resource_app, ["inspect", "local/bench-res"])

    def time_inspect_json(self) -> None:
        """Benchmark inspect with JSON output."""
        _runner.invoke(resource_app, ["inspect", "local/bench-res", "--format", "json"])

    def time_inspect_with_tree(self) -> None:
        """Benchmark inspect with --tree flag."""
        _runner.invoke(resource_app, ["inspect", "local/bench-res", "--tree"])


class ResourceLinkSuite:
    """Benchmark resource link-child/unlink-child command throughput."""

    def setup(self) -> None:
        """Set up mock service."""
        self._mock_service = MagicMock()
        self._mock_service.link_child.return_value = None
        self._mock_service.unlink_child.return_value = None
        self._patcher = patch(
            "cleveragents.cli.commands.resource._get_registry_service",
            return_value=self._mock_service,
        )
        self._patcher.start()

    def teardown(self) -> None:
        self._patcher.stop()

    def time_link_child(self) -> None:
        """Benchmark link-child command."""
        _runner.invoke(resource_app, ["link-child", "local/parent", "local/child"])

    def time_unlink_child(self) -> None:
        """Benchmark unlink-child command."""
        _runner.invoke(
            resource_app, ["unlink-child", "--yes", "local/parent", "local/child"]
        )
