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

import bpy


STRIP_NAME = "WebGapAnimKeyframeDeleteVSEStrip"
ACTION_NAME = "WebGapAnimKeyframeDeleteVSEAction"


def main():
    arguments = sys.argv[sys.argv.index("--") + 1 :]
    if len(arguments) != 1:
        raise SystemExit("usage: blender -b --factory-startup --python M16-GAP-00185.py -- OUTPUT")

    bpy.ops.wm.read_factory_settings(use_empty=True)
    scene = bpy.context.scene
    sequence_editor = scene.sequence_editor_create()
    source = pathlib.Path(__file__).resolve().parents[3] / "tests/files/web/media/sequencer-frame.png"
    strip = sequence_editor.strips.new_image(
        name=STRIP_NAME,
        filepath=str(source),
        channel=1,
        frame_start=1,
    )
    strip.directory = "//../media/"
    strip.frame_final_duration = 6
    strip.select = True
    sequence_editor.active_strip = strip
    for frame, value in ((1, 0.25), (3, 0.5), (5, 0.75)):
        scene.frame_set(frame)
        strip.blend_alpha = value
        strip.keyframe_insert(data_path="blend_alpha", frame=frame)
    scene.animation_data.action.name = ACTION_NAME
    scene.frame_start = 1
    scene.frame_end = 6
    scene.frame_set(3)
    bpy.ops.wm.save_as_mainfile(
        filepath=str(pathlib.Path(arguments[0]).resolve()), check_existing=False, compress=True
    )


if __name__ == "__main__":
    main()