"""把游戏 FBX 整理成混元 GLB 轴向（Y-up）且原点在底面中点。可重复执行。
调用：blender -b --factory-startup --python bl_restore_yup.py -- <fbx> [fbx...]
"""
import json
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from bl_decimate import (  # noqa: E402
    export_fbx_source_yup,
    import_model_objects,
    prepare_game_export,
)


def restore_file(path):
    import bpy

    bpy.ops.wm.read_factory_settings(use_empty=True)
    imported = import_model_objects(path)
    meshes = [o for o in imported if o.type == "MESH"]
    if not meshes:
        return {"path": path, "error": "no mesh"}
    for obj in meshes:
        prepare_game_export(obj)
    bpy.ops.object.select_all(action="DESELECT")
    for obj in meshes:
        obj.select_set(True)
    bpy.context.view_layer.objects.active = meshes[0]
    export_fbx_source_yup(path)
    verts = meshes[0].data.vertices
    xs = [v.co.x for v in verts]
    ys = [v.co.y for v in verts]
    zs = [v.co.z for v in verts]
    return {
        "path": os.path.basename(path),
        "meshes": len(meshes),
        "min_y": round(min(ys), 6),
        "mid_x": round((min(xs) + max(xs)) * 0.5, 6),
        "mid_z": round((min(zs) + max(zs)) * 0.5, 6),
    }


def main():
    argv = sys.argv[sys.argv.index("--") + 1 :]
    results = []
    for raw in argv:
        path = os.path.abspath(raw)
        if not os.path.isfile(path):
            results.append({"path": raw, "error": "missing"})
            continue
        results.append(restore_file(path))
    print("MT_SUMMARY " + json.dumps(results, ensure_ascii=False))


if __name__ == "__main__" and "--" in sys.argv:
    main()