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

def main(output):
    bpy.ops.wm.read_factory_settings(use_empty=True)
    parent = bpy.data.collections.new("WebGapCollection")
    child = bpy.data.collections.new("WebGapChild")
    bpy.context.scene.collection.children.link(parent)
    parent.children.link(child)
    mesh = bpy.data.meshes.new("WebGapCollectionMesh")
    mesh.from_pydata([(0, 0, 0), (1, 0, 0), (0, 1, 0)], [], [(0, 1, 2)])
    object_ = bpy.data.objects.new("WebGapCollectionObject", mesh)
    child.objects.link(object_)
    bpy.ops.wm.save_as_mainfile(filepath=output, compress=True)

if __name__ == "__main__":
    args = sys.argv[sys.argv.index("--") + 1:]
    if len(args) != 1: raise SystemExit("usage: blender -b --python generate-collection-fixture.py -- OUTPUT")
    main(args[0])