"""Edge case tests for tool registry."""

import pytest

from alfred.agent.registry import Tool, make_tools
from alfred.settings import settings


class TestToolEdgeCases:
    """Edge case tests for Tool dataclass."""

    def test_tool_creation(self):
        """Should create tool with all fields."""
        tool = Tool(
            name="test_tool",
            description="Test description",
            func=lambda: {"status": "ok"},
            parameters={"type": "object", "properties": {}},
        )

        assert tool.name == "test_tool"
        assert tool.description == "Test description"
        assert callable(tool.func)

    def test_tool_with_unicode_name(self):
        """Should handle unicode in tool name."""
        tool = Tool(
            name="tool_日本語",
            description="Japanese tool",
            func=lambda: {},
            parameters={},
        )

        assert "日本語" in tool.name

    def test_tool_with_unicode_description(self):
        """Should handle unicode in description."""
        tool = Tool(
            name="test",
            description="日本語の説明 🔧",
            func=lambda: {},
            parameters={},
        )

        assert "日本語" in tool.description

    def test_tool_with_complex_parameters(self):
        """Should handle complex parameter schemas."""
        tool = Tool(
            name="complex",
            description="Complex tool",
            func=lambda: {},
            parameters={
                "type": "object",
                "properties": {
                    "nested": {
                        "type": "object",
                        "properties": {
                            "deep": {
                                "type": "array",
                                "items": {"type": "string"},
                            },
                        },
                    },
                    "enum_field": {
                        "type": "string",
                        "enum": ["a", "b", "c"],
                    },
                },
                "required": ["nested"],
            },
        )

        assert "nested" in tool.parameters["properties"]

    def test_tool_with_empty_parameters(self):
        """Should handle empty parameters."""
        tool = Tool(
            name="no_params",
            description="Tool with no parameters",
            func=lambda: {},
            parameters={},
        )

        assert tool.parameters == {}

    def test_tool_with_none_func(self):
        """Should handle None func (though invalid)."""
        tool = Tool(
            name="invalid",
            description="Invalid tool",
            func=None,
            parameters={},
        )

        assert tool.func is None

    def test_tool_func_execution(self):
        """Should execute tool function."""
        result_value = {"status": "ok", "data": "test"}
        tool = Tool(
            name="test",
            description="Test",
            func=lambda: result_value,
            parameters={},
        )

        result = tool.func()

        assert result == result_value

    def test_tool_func_with_args(self):
        """Should execute tool function with arguments."""
        tool = Tool(
            name="test",
            description="Test",
            func=lambda x, y: {"sum": x + y},
            parameters={},
        )

        result = tool.func(1, 2)

        assert result["sum"] == 3

    def test_tool_func_with_kwargs(self):
        """Should execute tool function with keyword arguments."""
        tool = Tool(
            name="test",
            description="Test",
            func=lambda **kwargs: {"received": kwargs},
            parameters={},
        )

        result = tool.func(a=1, b=2)

        assert result["received"]["a"] == 1


class TestMakeToolsEdgeCases:
    """Edge case tests for make_tools function."""

    def test_make_tools_returns_dict(self, memory):
        """Should return dictionary of tools."""
        tools = make_tools(settings)

        assert isinstance(tools, dict)

    def test_make_tools_all_tools_have_required_fields(self, memory):
        """Should have all required fields for each tool."""
        tools = make_tools(settings)

        for name, tool in tools.items():
            assert tool.name == name
            assert isinstance(tool.description, str)
            assert len(tool.description) > 0
            assert callable(tool.func)
            assert isinstance(tool.parameters, dict)

    def test_make_tools_unique_names(self, memory):
        """Should have unique tool names."""
        tools = make_tools(settings)

        names = list(tools.keys())
        assert len(names) == len(set(names))

    def test_make_tools_valid_parameter_schemas(self, memory):
        """Should have valid JSON Schema for parameters."""
        tools = make_tools(settings)

        for tool in tools.values():
            params = tool.parameters
            if params:
                assert "type" in params
                assert params["type"] == "object"
                if "properties" in params:
                    assert isinstance(params["properties"], dict)

    def test_make_tools_required_params_in_properties(self, memory):
        """Should have required params defined in properties."""
        tools = make_tools(settings)

        for tool in tools.values():
            params = tool.parameters
            if "required" in params and "properties" in params:
                for req in params["required"]:
                    assert req in params["properties"], (
                        f"Required param {req} not in properties for {tool.name}"
                    )

    def test_make_tools_descriptions_not_empty(self, memory):
        """Should have non-empty descriptions."""
        tools = make_tools(settings)

        for tool in tools.values():
            assert tool.description.strip() != ""

    def test_make_tools_funcs_callable(self, memory):
        """Should have callable functions."""
        tools = make_tools(settings)

        for tool in tools.values():
            assert callable(tool.func)

    def test_make_tools_expected_tools_present(self, memory):
        """Should have expected tools."""
        tools = make_tools(settings)

        expected = [
            "set_path_for_folder",
            "list_folder",
            "find_media_imdb_id",
            "find_torrent",  # Changed from find_torrents
            "add_torrent_by_index",
            "add_torrent_to_qbittorrent",
            "get_torrent_by_index",
            "set_language",
        ]

        for name in expected:
            assert name in tools, f"Expected tool {name} not found"

    def test_make_tools_idempotent(self, memory):
        """Should return same tools on multiple calls."""
        tools1 = make_tools(settings)
        tools2 = make_tools(settings)

        assert set(tools1.keys()) == set(tools2.keys())

    def test_make_tools_parameter_types(self, memory):
        """Should have valid parameter types."""
        tools = make_tools(settings)

        valid_types = ["string", "integer", "number", "boolean", "array", "object"]

        for tool in tools.values():
            if "properties" in tool.parameters:
                for prop_name, prop_schema in tool.parameters["properties"].items():
                    if "type" in prop_schema:
                        assert prop_schema["type"] in valid_types, (
                            f"Invalid type for {tool.name}.{prop_name}"
                        )

    def test_make_tools_enum_values(self, memory):
        """Should have valid enum values."""
        tools = make_tools(settings)

        for tool in tools.values():
            if "properties" in tool.parameters:
                for _prop_name, prop_schema in tool.parameters["properties"].items():
                    if "enum" in prop_schema:
                        assert isinstance(prop_schema["enum"], list)
                        assert len(prop_schema["enum"]) > 0


class TestToolExecution:
    """Tests for tool execution edge cases."""

    def test_tool_returns_dict(self, memory, real_folder):
        """Should return dict from tool execution."""
        tools = make_tools(settings)
        memory.ltm.set_config("download_folder", str(real_folder["downloads"]))

        result = tools["list_folder"].func(folder_type="download")

        assert isinstance(result, dict)

    def test_tool_returns_status(self, memory, real_folder):
        """Should return status in result."""
        tools = make_tools(settings)
        memory.ltm.set_config("download_folder", str(real_folder["downloads"]))

        result = tools["list_folder"].func(folder_type="download")

        assert "status" in result or "error" in result

    def test_tool_handles_missing_args(self, memory):
        """Should handle missing required arguments."""
        tools = make_tools(settings)

        with pytest.raises(TypeError):
            tools["set_path_for_folder"].func()  # Missing required args

    def test_tool_handles_wrong_type_args(self, memory):
        """Should handle wrong type arguments."""
        tools = make_tools(settings)

        # Pass wrong type - should either work or raise
        try:
            result = tools["get_torrent_by_index"].func(index="not an int")
            # If it doesn't raise, should return error
            assert "error" in result or "status" in result
        except (TypeError, ValueError):
            pass  # Also acceptable

    def test_tool_handles_extra_args(self, memory, real_folder):
        """Should handle extra arguments."""
        tools = make_tools(settings)
        memory.ltm.set_config("download_folder", str(real_folder["downloads"]))

        # Extra args should raise TypeError
        with pytest.raises(TypeError):
            tools["list_folder"].func(
                folder_type="download",
                extra_arg="should fail",
            )