#!/usr/bin/env python3
import pathlib
import sys

import bpy


def main(output: pathlib.Path) -> None:
    bpy.ops.wm.read_factory_settings(use_empty=True)
    mesh = bpy.data.meshes.new("WebGapBuildMesh")
    mesh.from_pydata([(-1, -1, 0), (1, -1, 0), (1, 1, 0), (-1, 1, 0)], [], [(0, 1, 2, 3)])
    mesh.update()
    obj = bpy.data.objects.new("WebGapBuildObject", mesh)
    bpy.context.collection.objects.link(obj)
    modifier = obj.modifiers.new(name="WebGapBuild", type="BUILD")
    modifier.frame_start = 3
    modifier.frame_duration = 12
    modifier.use_reverse = True
    modifier.use_random_order = True
    modifier.seed = 17
    modifier.show_viewport = True
    modifier.show_render = False
    modifier.show_in_editmode = True
    modifier.show_on_cage = False
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)
    bpy.ops.wm.save_as_mainfile(filepath=str(output.resolve()), check_existing=False, compress=True)


if __name__ == "__main__":
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --python M16-GAP-00034.py -- OUTPUT")
    main(pathlib.Path(arguments[0]))