from codesnap.utils.file_utils import FileUtils


class TestFileUtils:
    def test_should_ignore_patterns(self) -> None:
        assert FileUtils.should_ignore("test.pyc", ["*.pyc"]) is True
        assert FileUtils.should_ignore("test.pyc", ["*.pyc", "*.pyo"]) is True
        assert FileUtils.should_ignore("test.py", ["*.pyc"]) is False

    def test_should_ignore_directory(self) -> None:
        assert FileUtils.should_ignore("src/__pycache__", ["__pycache__/*"]) is True
        assert FileUtils.should_ignore(".git/config", [".git/*"]) is True

    def test_is_text_file(self) -> None:
        assert FileUtils.is_text_file("test.py") is True
        assert FileUtils.is_text_file("test.js") is True
        assert FileUtils.is_text_file("test.tsx") is True
        assert FileUtils.is_text_file("Dockerfile") is True

    def test_is_not_binary_file(self) -> None:
        assert FileUtils.is_text_file("test.png") is False
        assert FileUtils.is_text_file("test.jpg") is False
        assert FileUtils.is_text_file("test.so") is False

    def test_read_file_content(self) -> None:
        import os
        import tempfile
        with tempfile.NamedTemporaryFile(mode='w', suffix='.py', delete=False) as f:
            f.write("print('hello')")
            temp_path = f.name
        try:
            content = FileUtils.read_file_content(temp_path)
            assert content == "print('hello')"
        finally:
            os.unlink(temp_path)

    def test_read_file_content_not_found(self) -> None:
        content = FileUtils.read_file_content("/nonexistent/file.py")
        assert content is None

    def test_count_lines(self) -> None:
        content = "line1\nline2\nline3"
        assert FileUtils.count_lines(content) == 3
        assert FileUtils.count_lines("") == 1
        assert FileUtils.count_lines("single") == 1

    def test_get_relative_path(self) -> None:
        import os
        import tempfile
        with tempfile.TemporaryDirectory() as tmpdir:
            subdir = os.path.join(tmpdir, "subdir")
            os.makedirs(subdir)
            filepath = os.path.join(subdir, "test.py")
            rel = FileUtils.get_relative_path(filepath, tmpdir)
            assert rel == os.path.join("subdir", "test.py")

    def test_walk_directory(self) -> None:
        import os
        import tempfile
        with tempfile.TemporaryDirectory() as tmpdir:
            os.makedirs(os.path.join(tmpdir, "src"))
            os.makedirs(os.path.join(tmpdir, "tests"))
            with open(os.path.join(tmpdir, "main.py"), "w") as f:
                f.write("print('hello')")
            with open(os.path.join(tmpdir, "src", "module.py"), "w") as f:
                f.write("def test(): pass")

            files = FileUtils.walk_directory(tmpdir, ["*.pyc", "__pycache__/*"], 100)
            assert len(files) == 2

    def test_walk_directory_with_ignore(self) -> None:
        import os
        import tempfile
        with tempfile.TemporaryDirectory() as tmpdir:
            os.makedirs(os.path.join(tmpdir, "__pycache__"))
            with open(os.path.join(tmpdir, "main.py"), "w") as f:
                f.write("print('hello')")
            with open(os.path.join(tmpdir, "__pycache__", "cache.pyc"), "w") as f:
                f.write("cached")

            files = FileUtils.walk_directory(tmpdir, ["*.pyc", "__pycache__/*"], 100)
            assert len(files) == 1
            assert "__pycache__" not in files[0]

    def test_get_directory_tree(self) -> None:
        import os
        import tempfile
        with tempfile.TemporaryDirectory() as tmpdir:
            os.makedirs(os.path.join(tmpdir, "src"))
            os.makedirs(os.path.join(tmpdir, "tests"))
            with open(os.path.join(tmpdir, "main.py"), "w") as f:
                f.write("")
            with open(os.path.join(tmpdir, "src", "module.py"), "w") as f:
                f.write("")

            tree = FileUtils.get_directory_tree(tmpdir, ["*.pyc"], 3)
            assert len(tree) > 0
            assert any("main.py" in line for line in tree)