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

import bpy


ARMATURE_NAME = "WebGapArmatureSelectLinkedPickArmature"
OBJECT_NAME = "WebGapArmatureSelectLinkedPickObject"
ROOT_BONE = "WebGapArmatureSelectLinkedPickRoot"
CHILD_BONE = "WebGapArmatureSelectLinkedPickChild"
GRANDCHILD_BONE = "WebGapArmatureSelectLinkedPickGrandchild"
OTHER_BONE = "WebGapArmatureSelectLinkedPickOther"


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00254.py -- OUTPUT")
    bpy.ops.wm.read_factory_settings(use_empty=True)
    armature = bpy.data.armatures.new(ARMATURE_NAME)
    obj = bpy.data.objects.new(OBJECT_NAME, armature)
    bpy.context.scene.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)
    bpy.ops.object.mode_set(mode="EDIT")
    root = armature.edit_bones.new(ROOT_BONE)
    root.head = (0.0, 0.0, 0.0); root.tail = (0.0, 1.0, 0.0)
    child = armature.edit_bones.new(CHILD_BONE)
    child.head = (0.0, 1.0, 0.0); child.tail = (0.0, 2.0, 0.0); child.parent = root; child.use_connect = True
    grandchild = armature.edit_bones.new(GRANDCHILD_BONE)
    grandchild.head = (0.0, 2.0, 0.0); grandchild.tail = (0.0, 3.0, 0.0); grandchild.parent = child; grandchild.use_connect = True
    other = armature.edit_bones.new(OTHER_BONE)
    other.head = (2.0, 0.0, 0.0); other.tail = (2.0, 1.0, 0.0)
    root.select = True; root.select_head = True; root.select_tail = True
    child.select = False; child.select_head = False; child.select_tail = False
    grandchild.select = False; grandchild.select_head = False; grandchild.select_tail = False
    other.select = False; other.select_head = False; other.select_tail = False
    armature.edit_bones.active = root
    bpy.ops.object.mode_set(mode="OBJECT")
    bpy.ops.wm.save_as_mainfile(filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True)


if __name__ == "__main__":
    main()