# Path: scaffold/artisans/translocate_core/conductor/structure_sentinel/strategies/python_strategy/testing/generator.py
# ---------------------------------------------------------------------------------------------------------------------

from typing import List
from .contracts import TestFileBlueprint, TestableUnit


class PytestArchitect:
    """
    =============================================================================
    == THE PYTEST ARCHITECT (V-Ω-GENERATIVE-ENGINE)                            ==
    =============================================================================
    Forges the actual test scripture.
    Capabilities:
    1. Auto-Parametrization based on type hints.
    2. Async/Await handling.
    3. Class grouping.
    """

    def forge_suite(self, blueprint: TestFileBlueprint) -> str:
        lines = [
            "import pytest",
            "from unittest.mock import MagicMock, patch",
            f"from {blueprint.source_module} import *"
        ]

        lines.append("")

        # Organize by class
        class_groups = {}
        top_level = []

        for unit in blueprint.units:
            if unit.parent_class:
                class_groups.setdefault(unit.parent_class, []).append(unit)
            else:
                top_level.append(unit)

        # Render Top Level
        for unit in top_level:
            lines.extend(self._forge_test_case(unit))
            lines.append("")

        # Render Classes
        for class_name, units in class_groups.items():
            lines.append(f"class Test{class_name}:")
            for unit in units:
                case_lines = self._forge_test_case(unit)
                # Indent methods
                lines.extend([f"    {l}" if l else "" for l in case_lines])
                lines.append("")
            lines.append("")

        if not blueprint.units:
            lines.append("def test_smoke():")
            lines.append('    """Auto-generated smoke test."""')
            lines.append("    assert True")

        return "\n".join(lines).strip() + "\n"

    def _forge_test_case(self, unit: TestableUnit) -> List[str]:
        lines = []

        # 1. Async Marker
        if unit.is_async:
            lines.append("@pytest.mark.asyncio")

        # 2. Parametrization Strategy
        # If arguments exist, we suggest a parametrized test structure
        if unit.args:
            arg_names = ", ".join([a.name for a in unit.args])
            lines.append(f'@pytest.mark.parametrize("{arg_names}, expected", [')
            lines.append(f'    # TODO: Add test cases for {unit.name}')
            lines.append(f'    ({self._generate_example_args(unit.args)}, None),')
            lines.append("])")

            def_line = f"async def" if unit.is_async else "def"
            lines.append(f"{def_line} test_{unit.name}({arg_names}, expected):")
        else:
            def_line = f"async def" if unit.is_async else "def"
            lines.append(f"{def_line} test_{unit.name}():")

        # 3. Docstring
        lines.append(f'    """Test for {unit.name}."""')

        # 4. Body
        if unit.is_async:
            call_args = ", ".join([a.name for a in unit.args])
            # If method, we need an instance. But inside TestClass we assume self?
            # No, unit tests for classes usually instantiate in setup or fixture.
            # We generate generic call.
            lines.append(f"    # result = await {unit.name}({call_args})")
        else:
            call_args = ", ".join([a.name for a in unit.args])
            lines.append(f"    # result = {unit.name}({call_args})")

        lines.append("    assert True")
        return lines

    def _generate_example_args(self, args) -> str:
        """Generates dummy values based on type hints."""
        examples = []
        for arg in args:
            t = arg.type_hint
            if t == 'int':
                examples.append("1")
            elif t == 'str':
                examples.append('"test"')
            elif t == 'bool':
                examples.append("True")
            elif t == 'float':
                examples.append("1.0")
            elif t == 'List':
                examples.append("[]")
            elif t == 'Dict':
                examples.append("{}")
            else:
                examples.append("None")  # Mock or unknown
        return ", ".join(examples)