"""贴纸引擎单元测试 - 配置+解析等纯逻辑."""

from __future__ import annotations

import pytest
from video_processing.sticker_engine import (
    ImageStickerConfig,
    TextStickerConfig,
    parse_stickers_from_config,
)


class TestImageStickerConfigDefaults:
    """ImageStickerConfig 默认值测试."""

    def test_default_values(self):
        """默认值正确."""
        s = ImageStickerConfig()
        assert s.enabled is False
        assert s.type == "image"
        assert s.position == "top_right"
        assert s.x is None
        assert s.y is None
        assert s.x_unit == "percent"
        assert s.y_unit == "percent"
        assert s.scale == 1.0
        assert s.width is None
        assert s.height is None
        assert s.opacity == 1.0
        assert s.start_time == 0.0
        assert s.duration == 0.0
        assert s.fade_in == 0.0
        assert s.fade_out == 0.0
        assert s.z_index == 10
        assert s.image_url == ""
        assert s.preset_id == ""


class TestTextStickerConfigDefaults:
    """TextStickerConfig 默认值测试."""

    def test_default_values(self):
        """默认值正确."""
        s = TextStickerConfig()
        assert s.enabled is False
        assert s.type == "text"
        assert s.text == ""
        assert s.font_size == 36
        assert s.font_color == "#FFFFFF"
        assert s.font_family == "sans"
        assert s.stroke_color == "#000000"
        assert s.stroke_width == 2
        assert s.shadow_color == "#000000"
        assert s.shadow_x == 2
        assert s.shadow_y == 2
        assert s.shadow_alpha == 0.5
        assert s.position == "center"
        assert s.start_time == 0.0
        assert s.duration == 0.0
        assert s.z_index == 10
        assert s.bg_color == ""
        assert s.bg_padding == 8
        assert s.bg_alpha == 0.8
        assert s.bg_corner_radius == 8


class TestParseStickersFromConfig:
    """parse_stickers_from_config 测试."""

    def test_none_returns_empty(self):
        """None返回空列表."""
        result = parse_stickers_from_config(None)
        assert result == []

    def test_empty_dict_returns_empty(self):
        """空dict返回空."""
        result = parse_stickers_from_config({})
        assert result == []

    def test_no_stickers_key_returns_empty(self):
        """无stickers键返回空."""
        result = parse_stickers_from_config({"other": "value"})
        assert result == []

    def test_stickers_not_list_returns_empty(self):
        """stickers不是列表返回空."""
        result = parse_stickers_from_config({"stickers": "not_a_list"})
        assert result == []

    def test_empty_stickers_list(self):
        """空贴纸列表."""
        result = parse_stickers_from_config({"stickers": []})
        assert result == []

    def test_single_sticker(self):
        """单个贴纸."""
        result = parse_stickers_from_config(
            {
                "stickers": [{"type": "text", "text": "hello"}],
            }
        )
        assert len(result) == 1
        assert result[0]["text"] == "hello"

    def test_multiple_stickers(self):
        """多个贴纸."""
        result = parse_stickers_from_config(
            {
                "stickers": [
                    {"type": "text", "text": "a"},
                    {"type": "image", "image_url": "/b.png"},
                    {"type": "text", "text": "c"},
                ],
            }
        )
        assert len(result) == 3

    def test_returns_raw_dicts(self):
        """返回原始dict，不做转换."""
        sticker = {"type": "text", "text": "test", "font_size": 48}
        result = parse_stickers_from_config({"stickers": [sticker]})
        assert result[0] is sticker  # 引用相同，不做深拷贝