"""Tests for dynamic Modal proxy nodes and local execution fallback."""

from __future__ import annotations

from typing import Any


class _FakeOriginalNode:
    """Simple fake legacy node for proxy signature mirroring."""

    RETURN_TYPES = ("IMAGE", "INT")
    RETURN_NAMES = ("image", "count")
    OUTPUT_IS_LIST = (False, False)
    FUNCTION = "run"

    def run(self, **kwargs: Any) -> tuple[Any, ...]:
        """Return a tuple that exposes the inputs for verification."""
        return (kwargs["value"], 1)


def test_dynamic_proxy_node_preserves_output_signature(
    modal_executor_module: Any,
) -> None:
    """Dynamic Modal proxies should mirror the original output count and names."""
    fake_nodes_module = type(
        "FakeNodesModule",
        (),
        {
            "NODE_CLASS_MAPPINGS": {"OriginalNode": _FakeOriginalNode},
            "NODE_DISPLAY_NAME_MAPPINGS": {},
        },
    )()

    proxy_id = modal_executor_module.ensure_modal_proxy_node_registered(
        original_class_type="OriginalNode",
        original_class=_FakeOriginalNode,
        nodes_module=fake_nodes_module,
    )

    proxy_class = fake_nodes_module.NODE_CLASS_MAPPINGS[proxy_id]
    schema = proxy_class.GET_SCHEMA()

    assert schema.node_id == proxy_id
    assert [output.display_name for output in schema.outputs] == ["image", "count"]
    assert [output.io_type for output in schema.outputs] == ["IMAGE", "INT"]


def test_proxy_execution_uses_injected_remote_client(
    modal_executor_module: Any,
) -> None:
    """Proxy execution should delegate to the configured remote client."""
    fake_nodes_module = type(
        "FakeNodesModule",
        (),
        {
            "NODE_CLASS_MAPPINGS": {"OriginalNode": _FakeOriginalNode},
            "NODE_DISPLAY_NAME_MAPPINGS": {},
        },
    )()

    proxy_id = modal_executor_module.ensure_modal_proxy_node_registered(
        original_class_type="OriginalNode",
        original_class=_FakeOriginalNode,
        nodes_module=fake_nodes_module,
    )
    proxy_class = fake_nodes_module.NODE_CLASS_MAPPINGS[proxy_id]

    class FakeClient:
        """Test client that returns deterministic outputs."""

        def execute_payload(self, payload: dict[str, Any], kwargs: dict[str, Any]) -> tuple[str, int]:
            """Return values derived from the proxied node payload."""
            return (f"{payload['class_type']}::{kwargs['value']}", 3)

    modal_executor_module.set_remote_executor_client_factory(lambda: FakeClient())
    try:
        result = proxy_class.execute(original_node_data={"class_type": "OriginalNode"}, value="payload")
    finally:
        modal_executor_module.set_remote_executor_client_factory(None)

    assert result.result == ("OriginalNode::payload", 3)


def test_local_remote_app_executes_original_node(
    remote_modal_app_module: Any,
    serialization_module: Any,
) -> None:
    """The local fallback remote app should execute a mapped legacy node."""
    payload = remote_modal_app_module.execute_node_locally(
        node_data={"class_type": "OriginalNode"},
        kwargs_payload='{"value": "hello"}',
        node_mapping={"OriginalNode": _FakeOriginalNode},
    )
    outputs = serialization_module.deserialize_node_outputs(payload)
    assert outputs == ("hello", 1)


def test_stable_modal_cloud_entry_imports_without_modal_sdk(
    modal_cloud_module: Any,
) -> None:
    """The stable Modal cloud module should stay importable when modal is unavailable."""
    assert modal_cloud_module.__name__ == "comfyui_modal_sync_cloud"
    assert hasattr(modal_cloud_module, "RemoteEngine")


def test_modal_cloud_ignores_heavy_comfyui_paths(
    modal_cloud_module: Any,
) -> None:
    """The Modal cloud module should skip heavyweight ComfyUI runtime artifacts."""
    from pathlib import Path

    assert modal_cloud_module._should_ignore_comfyui_path(Path("models/checkpoint.safetensors"))
    assert modal_cloud_module._should_ignore_comfyui_path(Path("output/run/output.png"))
    assert modal_cloud_module._should_ignore_comfyui_path(Path("__pycache__/execution.pyc"))
    assert not modal_cloud_module._should_ignore_comfyui_path(Path("execution.py"))
    assert not modal_cloud_module._should_ignore_comfyui_path(Path("comfy/model_management.py"))


def test_modal_cloud_installs_comfyui_runtime_packages(
    modal_cloud_module: Any,
) -> None:
    """The Modal cloud image should include the core packages ComfyUI imports at runtime."""
    packages = set(modal_cloud_module._comfyui_runtime_packages())

    assert "psutil" in packages
    assert "torch" in packages
    assert "torchvision" in packages
    assert "torchsde" in packages
    assert "transformers" in packages
    assert "sentencepiece" in packages
    assert "aiohttp" in packages
    assert "opencv-python-headless" in packages


class _BoundarySourceNode:
    """Simple source node used for subgraph execution tests."""

    RETURN_TYPES = ("INT",)
    RETURN_NAMES = ("value",)
    OUTPUT_IS_LIST = (False,)
    FUNCTION = "run"

    @classmethod
    def INPUT_TYPES(cls) -> dict[str, dict[str, tuple[str]]]:
        """Return the minimal V1 input schema."""
        return {"required": {"value": ("INT",)}}

    def run(self, value: int) -> tuple[int]:
        """Increment the boundary input."""
        return (value + 1,)


class _BoundarySinkNode:
    """Simple downstream node used for subgraph execution tests."""

    RETURN_TYPES = ("INT",)
    RETURN_NAMES = ("value",)
    OUTPUT_IS_LIST = (False,)
    FUNCTION = "run"

    @classmethod
    def INPUT_TYPES(cls) -> dict[str, dict[str, tuple[str]]]:
        """Return the minimal V1 input schema."""
        return {"required": {"value": ("INT",)}}

    def run(self, value: int) -> tuple[int]:
        """Double the upstream value."""
        return (value * 2,)


def test_local_remote_app_executes_subgraph_payload(
    remote_modal_app_module: Any,
    serialization_module: Any,
) -> None:
    """The local fallback remote app should execute rewritten subgraph payloads."""
    payload = remote_modal_app_module.execute_subgraph_locally(
        payload={
            "payload_kind": "subgraph",
            "component_id": "component-1",
            "subgraph_prompt": {
                "remote_1": {
                    "class_type": "BoundarySource",
                    "inputs": {"value": 0},
                    "_meta": {},
                },
                "remote_2": {
                    "class_type": "BoundarySink",
                    "inputs": {"value": ["remote_1", 0]},
                    "_meta": {},
                },
            },
            "boundary_inputs": [
                {
                    "proxy_input_name": "remote_input_0",
                    "targets": [{"node_id": "remote_1", "input_name": "value"}],
                }
            ],
            "boundary_outputs": [
                {
                    "proxy_output_name": "remote_2_value",
                    "node_id": "remote_2",
                    "output_index": 0,
                    "io_type": "INT",
                    "is_list": False,
                }
            ],
            "execute_node_ids": ["remote_2"],
            "extra_data": {},
            "custom_nodes_bundle": None,
        },
        kwargs_payload='{"remote_input_0": 4}',
        node_mapping={
            "BoundarySource": _BoundarySourceNode,
            "BoundarySink": _BoundarySinkNode,
        },
    )
    outputs = serialization_module.deserialize_node_outputs(payload)
    assert outputs == (10,)