"""测试 PPTX Reader 的解析功能。"""

import pytest
import os
from readers.pptx import PptxReader


class TestPythonPptxReaderParse:
    """测试 PPTX Reader 的 parse 方法。"""

    def test_normal_file(self, temp_pptx):
        """测试正常 PPTX 文件解析。"""
        # 创建包含多个幻灯片的测试文件
        file_path = temp_pptx(slides=[
            ("主标题", "这是第一张幻灯片的内容。"),
            ("子标题", "这是第二张幻灯片的内容。"),
        ])

        reader = PptxReader()
        content, failures = reader.parse(file_path)

        # 验证解析成功
        assert content is not None, f"解析失败: {failures}"
        assert len(failures) == 0 or all("成功" in f or not f for f in failures)

        # 验证关键内容存在
        assert "主标题" in content
        assert "子标题" in content
        assert "第一张幻灯片" in content or "第二张幻灯片" in content

    def test_file_not_exists(self, tmp_path):
        """测试文件不存在的情况。"""
        non_existent_file = str(tmp_path / "non_existent.pptx")

        reader = PptxReader()
        content, failures = reader.parse(non_existent_file)

        # 验证返回 None 和错误信息
        assert content is None
        assert len(failures) > 0
        assert any("不存在" in f or "找不到" in f for f in failures)

    def test_empty_file(self, temp_pptx):
        """测试空 PPTX 文件。"""
        # 创建没有任何内容的文件
        file_path = temp_pptx()

        reader = PptxReader()
        content, failures = reader.parse(file_path)

        # 空文件应该返回 None 或空字符串
        assert content is None or content.strip() == ""

    def test_corrupted_file(self, temp_pptx, tmp_path):
        """测试损坏的 PPTX 文件。"""
        # 先创建正常文件
        file_path = temp_pptx(slides=[("测试", "测试内容")])

        # 破坏文件内容 - 完全覆盖文件
        with open(file_path, "wb") as f:
            f.write(b"corrupted content that is not a valid pptx file")

        reader = PptxReader()
        content, failures = reader.parse(file_path)

        # 验证返回 None 和错误信息
        assert content is None
        assert len(failures) > 0

    def test_special_chars(self, temp_pptx):
        """测试特殊字符处理。"""
        special_slides = [
            ("中文标题", "中文测试内容"),
            ("Emoji测试", "😀🎉🚀"),
            ("特殊符号", "©®™°±"),
            ("混合内容", "Hello你好🎉World世界"),
        ]

        file_path = temp_pptx(slides=special_slides)

        reader = PptxReader()
        content, failures = reader.parse(file_path)

        assert content is not None, f"解析失败: {failures}"

        # 验证各种特殊字符都被正确处理
        assert "中文" in content
        assert "😀" in content or "🎉" in content  # 至少包含一个 emoji
        assert "©" in content or "®" in content  # 至少包含一个特殊符号
        assert "Hello" in content or "World" in content


class TestPythonPptxReaderSupports:
    """测试 PPTX Reader 的 supports 方法。"""

    def test_supports_pptx_extension(self):
        """测试识别 .pptx 扩展名。"""
        reader = PptxReader()
        assert reader.supports("test.pptx") is True

    def test_supports_uppercase_extension(self):
        """测试识别大写扩展名。"""
        reader = PptxReader()
        assert reader.supports("TEST.PPTX") is True

    def test_rejects_unsupported_format(self):
        """测试拒绝不支持的格式。"""
        reader = PptxReader()
        assert reader.supports("test.pdf") is False
        assert reader.supports("test.txt") is False

    def test_supports_path_with_spaces(self):
        """测试包含空格的路径。"""
        reader = PptxReader()
        assert reader.supports("path with spaces/test.pptx") is True

    def test_supports_absolute_path(self):
        """测试绝对路径。"""
        reader = PptxReader()
        assert reader.supports("/absolute/path/test.pptx") is True
        assert reader.supports("C:\\Windows\\path\\test.pptx") is True