import unittest
import sys
from pathlib import Path


PROJECT_ROOT = Path(__file__).resolve().parents[1]
SOURCE_ROOT = PROJECT_ROOT / "src" / "anyimage"


class NodeAssetsTest(unittest.TestCase):
    def test_geometry_assets_have_readable_local_layouts(self):
        import bpy

        sys.path.insert(0, str(PROJECT_ROOT / "tools" / "node_assets"))
        from node_layout import validate_node_layout

        bpy.ops.wm.read_factory_settings(use_empty=True)
        with bpy.data.libraries.load(
            str(SOURCE_ROOT / "assets" / "O_AnyImage.blend")
        ) as (source, target):
            target.node_groups = list(source.node_groups)
        groups = [
            group
            for group in target.node_groups
            if group.bl_idname == "GeometryNodeTree"
        ]
        self.assertEqual(len(groups), 5)
        for group in groups:
            validate_node_layout(group)

    def test_production_code_does_not_create_node_groups(self):
        offenders = []
        for path in SOURCE_ROOT.rglob("*.py"):
            if "bpy.data.node_groups.new" in path.read_text(encoding="utf-8"):
                offenders.append(path.relative_to(PROJECT_ROOT).as_posix())
        self.assertEqual(offenders, [])

    def test_runtime_node_group_entries_load_assets(self):
        material_source = (SOURCE_ROOT / "common" / "material.py").read_text(
            encoding="utf-8"
        )
        mesh_plane_source = (
            SOURCE_ROOT / "operators" / "convert_to_plane" / "mesh_plane.py"
        ).read_text(encoding="utf-8")
        depth_plane_source = (
            SOURCE_ROOT / "operators" / "convert_to_plane" / "object.py"
        ).read_text(encoding="utf-8")
        self.assertIn("return load_node_group(group_name)", material_source)
        self.assertIn(
            "load_node_group(MESH_PLANE_NODE_GROUP_NAME)",
            mesh_plane_source,
        )
        self.assertIn(
            "load_node_group(DEPTH_PLANE_NODE_GROUP_NAME)",
            depth_plane_source,
        )
        self.assertFalse(
            (SOURCE_ROOT / "operators" / "convert_to_plane" / "nodes.py").exists()
        )


if __name__ == "__main__":
    unittest.main()