"""Jinja2 sandbox + regex_extract tests."""

from __future__ import annotations

import pytest

from mimic.templating.filters import regex_extract
from mimic.templating.sandbox import (
    CleanupRenderer,
    RenderError,
    StepOutputs,
    render_cleanup,
)


class TestRegexExtract:
    def test_returns_capture_group(self) -> None:
        assert regex_extract("hello world", r"hello (\w+)") == "world"

    def test_default_when_no_match(self) -> None:
        assert regex_extract("hello", r"foo(\d+)", default="N/A") == "N/A"

    def test_none_input_returns_default(self) -> None:
        assert regex_extract(None, r"x", default="empty") == "empty"

    def test_supports_group_zero(self) -> None:
        assert regex_extract("abc123", r"\w+\d+", group=0) == "abc123"


class TestCleanupRenderer:
    def setup_method(self) -> None:
        self.renderer = CleanupRenderer()

    def test_render_params(self) -> None:
        out = self.renderer.render(
            "echo {{ params.target }}",
            params={"target": "WIN-01"},
        )
        assert out == "echo WIN-01"

    def test_render_outputs_text(self) -> None:
        out = self.renderer.render(
            'echo "{{ outputs.text }}"',
            outputs=StepOutputs(text="captured"),
        )
        assert out == 'echo "captured"'

    def test_regex_extract_filter(self) -> None:
        out = self.renderer.render(
            r"{{ outputs.text | regex_extract('pid=(\\d+)') }}",
            outputs=StepOutputs(text="status: pid=4242 user=svc"),
        )
        assert out == "4242"

    def test_strict_undefined_raises(self) -> None:
        with pytest.raises(RenderError):
            self.renderer.render("{{ params.does_not_exist }}", params={})

    def test_sandbox_forbids_attribute_access(self) -> None:
        with pytest.raises(RenderError):
            self.renderer.render(
                "{{ ().__class__.__bases__[0].__subclasses__() }}",
                params={},
            )

    def test_module_singleton_round_trip(self) -> None:
        out = render_cleanup("hello {{ params.x }}", params={"x": "there"})
        assert out == "hello there"


class TestStepOutputsBlob:
    def test_blob_returns_empty_when_no_path(self) -> None:
        out = StepOutputs(text="x")
        assert out.blob() == ""

    def test_blob_caps_size(self, tmp_path) -> None:
        blob = tmp_path / "evidence.bin"
        blob.write_bytes(b"A" * 1024)
        out = StepOutputs(blob_path=blob, blob_max_bytes=10)
        assert out.blob() == "A" * 10