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

import bpy


def clear_preview_range():
    window = bpy.context.window
    screen = window.screen
    area = next(candidate for candidate in screen.areas if candidate.type == "DOPESHEET_EDITOR")
    region = next(candidate for candidate in area.regions if candidate.type == "WINDOW")
    with bpy.context.temp_override(window=window, screen=screen, area=area, region=region):
        if not bpy.ops.anim.previewrange_clear.poll():
            raise RuntimeError("ANIM_OT_previewrange_clear poll failed in animation editor context")
        result = bpy.ops.anim.previewrange_clear()
        if "FINISHED" not in result:
            raise RuntimeError(f"ANIM_OT_previewrange_clear returned {result}")


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00200.py -- OUTPUT")
    bpy.ops.wm.read_factory_settings(use_empty=True)
    mesh = bpy.data.meshes.new("WebGapAnimPreviewRangeClearMesh")
    mesh.from_pydata(
        [(-1.0, -1.0, 0.0), (1.0, -1.0, 0.0), (1.0, 1.0, 0.0), (-1.0, 1.0, 0.0)],
        [],
        [(0, 1, 2, 3)],
    )
    obj = bpy.data.objects.new("WebGapAnimPreviewRangeClearObject", mesh)
    bpy.context.scene.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    obj.select_set(True)
    scene = bpy.context.scene
    scene.frame_start = 1
    scene.frame_end = 8
    scene.use_preview_range = True
    scene.frame_preview_start = 2
    scene.frame_preview_end = 6
    bpy.ops.wm.save_as_mainfile(
        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
    )


if __name__ == "__main__":
    main()