"""AgentConfig serialize/deserialize round-trip via the hand-rolled _serialize."""

from __future__ import annotations

from pathlib import Path

from claire.config import AgentConfig, ClaireConfig, _serialize, load_or_init


def test_agent_section_omitted_when_default() -> None:
    cfg = ClaireConfig(machine_id="m")
    assert "[agent]" not in _serialize(cfg)


def test_agent_config_roundtrip(tmp_path: Path) -> None:
    p = tmp_path / "claire.toml"
    cfg = load_or_init(p)  # fresh: mints machine_id + sync_secret, writes file
    mutated = cfg.model_copy(
        update={"agent": AgentConfig(
            sync_interval_s=30, supervisor_allow_respawn=True, auto_continue="dry-run"
        )}
    )
    p.write_text(_serialize(mutated), encoding="utf-8")

    reloaded = load_or_init(p)
    assert "[agent]" in p.read_text()
    assert reloaded.agent.sync_interval_s == 30
    assert reloaded.agent.supervisor_allow_respawn is True
    assert reloaded.agent.auto_continue == "dry-run"   # guards _serialize coverage
    assert reloaded.agent.port == 8766  # default preserved across round-trip