"""Read browser-produced blend files and independently import OBJ using Blender."""
import json
import pathlib
import sys
import bpy


def vector(values):
    return [round(float(value), 5) for value in values]


def summary():
    bpy.context.view_layer.update()
    return sorted([{
        "name": obj.name, "type": obj.type,
        "location": vector(obj.location), "rotation": vector(obj.rotation_euler),
        "scale": vector(obj.scale),
        "vertices": [vector(vertex.co) for vertex in obj.data.vertices] if obj.type == "MESH" else [],
        "faces": [list(face.vertices) for face in obj.data.polygons] if obj.type == "MESH" else [],
    } for obj in bpy.data.objects], key=lambda item: item["name"])


def geometry():
    bpy.context.view_layer.update()
    return sorted([{
        "vertices": sorted(vector(obj.matrix_world @ vertex.co) for vertex in obj.data.vertices),
        "faces": len(obj.data.polygons),
    } for obj in bpy.data.objects if obj.type == "MESH"], key=lambda item: json.dumps(item, sort_keys=True))


directory, fixture, source = sys.argv[sys.argv.index("--") + 1:]
directory = pathlib.Path(directory)
states = {}
for blend in sorted(directory.glob("*.blend")):
    bpy.ops.wm.open_mainfile(filepath=str(blend))
    states[blend.stem] = summary()
    if blend.stem == "after":
        states["afterGeometry"] = geometry()
bpy.ops.wm.open_mainfile(filepath=fixture)
assert bpy.ops.wm.obj_import(filepath=source) == {"FINISHED"}
states["desktopExpected"] = summary()
bpy.ops.wm.read_factory_settings(use_empty=True)
assert bpy.ops.wm.obj_import(filepath=str(directory / "exported.obj")) == {"FINISHED"}
states["exportedGeometry"] = geometry()
(directory / "native.json").write_text(json.dumps(states, sort_keys=True, indent=2) + "\n")