# -*- coding: utf-8 -*-

import pytest

from domain.config import WorkerConfig
from domain.task import Effect, OutputSpec, RenderSpec
from handlers.render_video import RenderSegmentVideoHandler


class _DummyApiClient:
    pass


def _create_handler(tmp_path):
    config = WorkerConfig(
        api_endpoint='http://127.0.0.1:18084/api',
        access_key='TEST_ACCESS_KEY',
        worker_id='test-worker',
        temp_dir=str(tmp_path),
        cache_enabled=False,
        cache_dir=str(tmp_path / 'cache')
    )
    return RenderSegmentVideoHandler(config, _DummyApiClient())


def test_get_zoom_params_with_valid_values():
    effect = Effect.from_string('zoom:1.5,1.35,2')
    assert effect is not None

    start_sec, scale_factor, duration_sec = effect.get_zoom_params()
    assert start_sec == pytest.approx(1.5)
    assert scale_factor == pytest.approx(1.35)
    assert duration_sec == pytest.approx(2.0)


@pytest.mark.parametrize(
    'effect_str',
    [
        'zoom:-1,0.9,-2',
        'zoom:nan,inf,0',
        'zoom:bad,value,data',
        'zoom:,,',
    ],
)
def test_get_zoom_params_invalid_values_fallback_to_default(effect_str):
    effect = Effect.from_string(effect_str)
    assert effect is not None
    assert effect.get_zoom_params() == (0.0, 1.2, 1.0)


def test_build_command_with_zoom_uses_filter_complex(tmp_path):
    handler = _create_handler(tmp_path)
    render_spec = RenderSpec(effects='zoom:1.5,1.4,2')
    output_spec = OutputSpec(width=1080, height=1920, fps=30)

    command = handler._build_command(
        input_file='input.mp4',
        output_file='output.mp4',
        render_spec=render_spec,
        output_spec=output_spec,
        duration_ms=6000,
    )

    assert '-filter_complex' in command
    assert '-vf' not in command


def test_build_video_filters_zoom_and_camera_shot_stack_in_order(tmp_path):
    handler = _create_handler(tmp_path)
    render_spec = RenderSpec(effects='cameraShot:3,1|zoom:1,1.2,2')
    output_spec = OutputSpec(width=1080, height=1920, fps=30)

    filters = handler._build_video_filters(
        render_spec=render_spec,
        output_spec=output_spec,
        duration_ms=8000,
        source_duration_sec=10.0,
    )

    camera_shot_marker = 'concat=n=2:v=1:a=0'
    zoom_marker = "overlay=0:0:enable='between(t,1.0,3.0)'"
    assert camera_shot_marker in filters
    assert zoom_marker in filters
    assert filters.index(camera_shot_marker) < filters.index(zoom_marker)