"""Shared fixtures for integration tests.

All integration tests share a single container (session scope) to avoid the
overhead of starting/stopping Docker for every test function.  Each test that
needs filesystem isolation gets its own temporary working directory via the
``workdir`` fixture, which is torn down after the test.
"""

from __future__ import annotations

import uuid

import pytest

from docker_agent_sandbox import DockerSandbox

# python:3.11-slim ships bash, grep (GNU), find, and standard POSIX utilities.
_IMAGE = "python:3.11-slim"
_CONTAINER_NAME = "docker-agent-sandbox-tests"


@pytest.fixture(scope="session")
def sandbox():
    """Start a long-running container shared by all integration tests."""
    sb = DockerSandbox(
        container_name=_CONTAINER_NAME,
        image=_IMAGE,
        command="sleep infinity",
        cpu_limit=2,
        memory_limit="512m",
    )
    sb.start()
    yield sb
    sb.stop()


@pytest.fixture
def workdir(sandbox: DockerSandbox):
    """Create a fresh temp directory in the container for the calling test."""
    d = f"/tmp/test-{uuid.uuid4().hex}"
    sandbox.exec(f"mkdir -p {d}")
    yield d
    sandbox.exec(f"rm -rf {d}")