"""Robot Framework helper for actor loader smoke tests.

Provides a CLI-style interface for Robot to invoke actor discovery
and loading.  Exit code 0 = success, 1 = failure.

Usage:
    python robot/helper_actor_loading.py discover <directory>
    python robot/helper_actor_loading.py discover-examples
    python robot/helper_actor_loading.py discover-hierarchical
    python robot/helper_actor_loading.py discover-invalid <directory>
    python robot/helper_actor_loading.py namespace-default <directory>
"""

from __future__ import annotations

import sys
import tempfile
from pathlib import Path

_SRC = str(Path(__file__).resolve().parents[1] / "src")
if _SRC not in sys.path:
    sys.path.insert(0, _SRC)

from cleveragents.actor.loader import ActorLoader  # noqa: E402


def main() -> int:
    if len(sys.argv) < 2:
        print("Usage: helper_actor_loading.py <command> [args...]")
        return 1

    command = sys.argv[1]

    if command == "discover":
        directory = sys.argv[2]
        return _discover(Path(directory))

    if command == "discover-examples":
        project_root = Path(__file__).resolve().parents[1]
        return _discover(project_root / "examples" / "actors")

    if command == "discover-hierarchical":
        project_root = Path(__file__).resolve().parents[1]
        return _discover_hierarchical(project_root / "examples" / "actors")

    if command == "discover-invalid":
        directory = sys.argv[2]
        return _discover_invalid(Path(directory))

    if command == "namespace-default":
        return _namespace_default()

    print(f"Unknown command: {command}")
    return 1


def _discover(directory: Path) -> int:
    loader = ActorLoader(search_roots=[directory])
    actors = loader.discover()
    for actor in actors:
        print(f"actor-loaded: {actor.name} type={actor.type.value}")
    print(f"actor-count: {len(actors)}")
    return 0


def _discover_hierarchical(examples_dir: Path) -> int:
    """Load the hierarchical workflow example via ActorLoader and print key stats."""
    loader = ActorLoader(search_roots=[examples_dir])
    actors = loader.discover()
    target = next((a for a in actors if a.name == "workflows/dev-workflow"), None)
    if target is None:
        print("hierarchical-actor-not-found")
        return 1
    print(f"actor-loaded: {target.name}")
    print(f"actor-type: {target.type.value}")
    route = target.route
    if route is not None:
        print(f"node-count: {len(route.nodes)}")
        print(f"edge-count: {len(route.edges)}")
    lsp_configured = bool(getattr(target, "lsp", None))
    print(f"lsp-configured: {lsp_configured}")
    return 0


def _discover_invalid(directory: Path) -> int:
    loader = ActorLoader(search_roots=[directory])
    try:
        loader.discover()
        print("actor-loading-unexpected-success")
        return 1
    except Exception as exc:
        print(f"actor-loading-expected-fail: {exc}")
        return 0


def _namespace_default() -> int:
    tmp = Path(tempfile.mkdtemp(prefix="actor_ns_"))
    yaml_content = (
        "name: bare-name\n"
        "type: llm\n"
        "description: Test namespace defaulting\n"
        'version: "1.0"\n'
        "provider: openai\n"
        "model: gpt-4\n"
    )
    (tmp / "bare.yaml").write_text(yaml_content)
    loader = ActorLoader(search_roots=[tmp])
    actors = loader.discover()
    if len(actors) == 1 and actors[0].name == "local/bare-name":
        print("namespace-default-ok: local/bare-name")
        return 0
    print(f"namespace-default-fail: {[a.name for a in actors]}")
    return 1


if __name__ == "__main__":
    sys.exit(main())