"""测试 CLI 主函数功能。"""

import pytest
import os


class TestCLIDefaultOutput:
    """测试 CLI 默认输出功能。"""

    def test_default_output_docx(self, cli_runner, temp_docx):
        """测试默认输出 DOCX 文件的 Markdown 内容。"""
        file_path = temp_docx(paragraphs=["测试内容段落"])

        stdout, stderr, exit_code = cli_runner([file_path])

        assert exit_code == 0
        assert "测试内容段落" in stdout
        assert len(stdout.strip()) > 0

    def test_default_output_pdf(self, cli_runner, temp_pdf):
        """测试默认输出 PDF 文件的 Markdown 内容。"""
        file_path = temp_pdf(text="PDF测试内容")

        stdout, stderr, exit_code = cli_runner([file_path])

        assert exit_code == 0
        # PDF 解析可能有格式差异，只验证有输出
        assert len(stdout.strip()) > 0

    def test_default_output_html(self, cli_runner, temp_html):
        """测试默认输出 HTML 文件的 Markdown 内容。"""
        file_path = temp_html(content="<h1>HTML标题</h1><p>HTML内容</p>")

        stdout, stderr, exit_code = cli_runner([file_path])

        assert exit_code == 0
        assert "HTML标题" in stdout or "HTML内容" in stdout


class TestCLICountOption:
    """测试 CLI 字数统计功能。"""

    def test_count_option(self, cli_runner, temp_docx):
        """测试 -c 选项统计字数。"""
        file_path = temp_docx(paragraphs=["测试内容"])

        stdout, stderr, exit_code = cli_runner([file_path, "-c"])

        assert exit_code == 0
        # 输出应该是一个数字
        assert stdout.strip().isdigit()
        count = int(stdout.strip())
        assert count > 0

    def test_count_option_long_form(self, cli_runner, temp_docx):
        """测试 --count 选项。"""
        file_path = temp_docx(paragraphs=["测试"])

        stdout, stderr, exit_code = cli_runner([file_path, "--count"])

        assert exit_code == 0
        assert stdout.strip().isdigit()


class TestCLILinesOption:
    """测试 CLI 行数统计功能。"""

    def test_lines_option(self, cli_runner, temp_docx):
        """测试 -l 选项统计行数。"""
        file_path = temp_docx(paragraphs=["第一行", "第二行", "第三行"])

        stdout, stderr, exit_code = cli_runner([file_path, "-l"])

        assert exit_code == 0
        # 输出应该是一个数字
        assert stdout.strip().isdigit()
        lines = int(stdout.strip())
        assert lines > 0


class TestCLITitlesOption:
    """测试 CLI 标题提取功能。"""

    def test_titles_option(self, cli_runner, temp_docx):
        """测试 -t 选项提取标题。"""
        file_path = temp_docx(
            headings=[(1, "一级标题"), (2, "二级标题")],
            paragraphs=["普通段落"]
        )

        stdout, stderr, exit_code = cli_runner([file_path, "-t"])

        assert exit_code == 0
        # 输出应该包含标题
        assert "一级标题" in stdout
        assert "二级标题" in stdout
        # 不应该包含普通段落
        assert "普通段落" not in stdout


class TestCLITitleContentOption:
    """测试 CLI 标题内容提取功能。"""

    def test_title_content_option(self, cli_runner, temp_docx):
        """测试 -tc 选项提取标题内容。"""
        file_path = temp_docx(
            headings=[(1, "目标标题")],
            paragraphs=["标题下的内容"]
        )

        stdout, stderr, exit_code = cli_runner([file_path, "-tc", "目标标题"])

        assert exit_code == 0
        assert "目标标题" in stdout
        assert "标题下的内容" in stdout

    def test_title_content_not_found(self, cli_runner, temp_docx):
        """测试标题不存在时的错误处理。"""
        file_path = temp_docx(paragraphs=["测试内容"])

        stdout, stderr, exit_code = cli_runner([file_path, "-tc", "不存在的标题"])

        assert exit_code != 0
        # 应该输出错误信息
        output = stdout + stderr
        assert "未找到" in output or "不存在" in output or "错误" in output


class TestCLISearchOption:
    """测试 CLI 搜索功能。"""

    def test_search_option(self, cli_runner, temp_docx):
        """测试 -s 选项搜索内容。"""
        file_path = temp_docx(paragraphs=["包含关键词的段落", "其他内容"])

        stdout, stderr, exit_code = cli_runner([file_path, "-s", "关键词"])

        assert exit_code == 0
        assert "关键词" in stdout

    def test_search_no_match(self, cli_runner, temp_docx):
        """测试搜索无匹配时的错误处理。"""
        file_path = temp_docx(paragraphs=["测试内容"])

        stdout, stderr, exit_code = cli_runner([file_path, "-s", "不存在的内容"])

        assert exit_code != 0
        # 应该输出错误信息
        output = stdout + stderr
        assert "未找到" in output or "无匹配" in output or "错误" in output

    def test_search_with_context(self, cli_runner, temp_docx):
        """测试 -n 选项设置上下文行数。"""
        file_path = temp_docx(
            paragraphs=["第一行", "第二行", "包含关键词的行", "第四行", "第五行"]
        )

        stdout, stderr, exit_code = cli_runner([file_path, "-s", "关键词", "-n", "2"])

        assert exit_code == 0
        assert "关键词" in stdout
        # 应该包含上下文
        assert "第二行" in stdout or "第四行" in stdout


class TestCLIErrorHandling:
    """测试 CLI 错误处理。"""

    def test_file_not_exists(self, cli_runner, tmp_path):
        """测试文件不存在时的错误处理。"""
        non_existent = str(tmp_path / "non_existent.docx")

        stdout, stderr, exit_code = cli_runner([non_existent])

        assert exit_code != 0
        output = stdout + stderr
        assert "错误" in output or "不存在" in output

    def test_unsupported_format(self, cli_runner, tmp_path):
        """测试不支持的文件类型。"""
        unsupported_file = tmp_path / "test.xyz"
        unsupported_file.write_text("test content")

        stdout, stderr, exit_code = cli_runner([str(unsupported_file)])

        assert exit_code != 0
        output = stdout + stderr
        assert "reader" in output.lower() or "支持" in output

    def test_all_readers_failed(self, cli_runner, tmp_path):
        """测试所有 Reader 失败时的错误输出。"""
        # 创建一个看起来像 DOCX 但实际损坏的文件
        fake_docx = tmp_path / "fake.docx"
        fake_docx.write_bytes(b"not a real docx file")

        stdout, stderr, exit_code = cli_runner([str(fake_docx)])

        assert exit_code != 0
        output = stdout + stderr
        # 应该列出失败原因
        assert "失败" in output or "错误" in output