"""
fonts_default 级联和验证测试
"""

import pytest
from utils.font_resolver import FontResolver
from loaders.yaml_loader import validate_template_library_yaml, YAMLError


class TestFontsDefaultCascade:
    """fonts_default 级联测试类"""

    def test_fonts_default_basic_resolution(self):
        """测试基本的 fonts_default 解析"""
        fonts = {
            "body": {"family": "Arial", "size": 18}
        }
        
        resolver = FontResolver(
            fonts=fonts,
            fonts_default="@body",
            scope="document"
        )
        
        # 元素未定义 font 时使用 fonts_default
        result = resolver.resolve_font(None)
        assert result.family == "Arial"
        assert result.size == 18

    def test_document_fonts_default_can_reference_template_fonts(self):
        """测试文档 fonts_default 可以引用模板库字体"""
        template_fonts = {
            "base": {"family": "SimSun", "size": 18}
        }
        
        resolver = FontResolver(
            fonts={},
            fonts_default="@base",
            scope="document",
            template_fonts=template_fonts
        )
        
        result = resolver.resolve_font(None)
        assert result.family == "SimSun"
        assert result.size == 18

    def test_fonts_default_with_parent_inheritance(self):
        """测试 fonts_default 的 parent 继承"""
        fonts = {
            "base": {"family": "Arial", "size": 18},
            "body": {"parent": "@base", "color": "#000000"}
        }
        
        resolver = FontResolver(
            fonts=fonts,
            fonts_default="@body",
            scope="document"
        )
        
        result = resolver.resolve_font(None)
        assert result.family == "Arial"
        assert result.size == 18
        assert result.color == "#000000"


class TestTemplatLibraryFontsDefaultValidation:
    """模板库 fonts_default 验证测试类"""

    def test_template_library_fonts_default_valid(self):
        """测试模板库 fonts_default 引用有效字体"""
        data = {
            "metadata": {
                "size": "16:9",
                "fonts": {
                    "base": {"family": "SimSun", "size": 18}
                },
                "fonts_default": "@base"
            },
            "templates": {
                "test": {"elements": []}
            }
        }
        
        # 应该不抛出异常
        validate_template_library_yaml(data, "test.yaml")

    def test_template_library_fonts_default_invalid_reference(self):
        """测试模板库 fonts_default 引用不存在的字体"""
        data = {
            "metadata": {
                "size": "16:9",
                "fonts": {
                    "base": {"family": "SimSun", "size": 18}
                },
                "fonts_default": "@nonexistent"
            },
            "templates": {
                "test": {"elements": []}
            }
        }
        
        # 应该抛出错误
        with pytest.raises(YAMLError, match="fonts_default.*不存在"):
            validate_template_library_yaml(data, "test.yaml")

    def test_template_library_fonts_default_not_reference_format(self):
        """测试模板库 fonts_default 不是引用格式"""
        data = {
            "metadata": {
                "size": "16:9",
                "fonts": {
                    "base": {"family": "SimSun", "size": 18}
                },
                "fonts_default": "Arial"
            },
            "templates": {
                "test": {"elements": []}
            }
        }
        
        # 应该抛出错误
        with pytest.raises(YAMLError, match="fonts_default 必须是引用格式"):
            validate_template_library_yaml(data, "test.yaml")

    def test_template_library_without_fonts_default(self):
        """测试模板库没有 fonts_default 时正常工作"""
        data = {
            "metadata": {
                "size": "16:9",
                "fonts": {
                    "base": {"family": "SimSun", "size": 18}
                }
            },
            "templates": {
                "test": {"elements": []}
            }
        }
        
        # 应该不抛出异常
        validate_template_library_yaml(data, "test.yaml")