"""Pure classification logic for the agent supervisor — no rclaude/process."""

from __future__ import annotations

from uuid import uuid4

from claire.agent.supervisor import (
    _is_orchestrator_cwd,
    detect_wedged_and_orphaned,
    select_resume_candidates,
    should_auto_continue,
)
from claire.rclaude import SessionRow, TmuxRow

NOW = 1_000_000.0


def _sess(uuid, *, host="local", age_s=0, cwd="/x"):
    return SessionRow(host=host, uuid=uuid, snippet="", cwd=cwd, mtime_epoch=int(NOW) - age_s)


def _tmux(resumed_uuid, *, host="local", name="claude-x-1"):
    return TmuxRow(host=host, session_name=name, detail="1 windows", resumed_uuid=resumed_uuid)


def test_wedged_when_live_pane_and_stale_mtime():
    u = uuid4()
    wedged, orphaned = detect_wedged_and_orphaned(
        [_sess(u, age_s=400)], [_tmux(u)], wedge_threshold_s=300, now=NOW
    )
    assert [s.uuid for s in wedged] == [u]
    assert orphaned == []


def test_not_wedged_when_fresh():
    u = uuid4()
    wedged, orphaned = detect_wedged_and_orphaned(
        [_sess(u, age_s=10)], [_tmux(u)], wedge_threshold_s=300, now=NOW
    )
    assert wedged == [] and orphaned == []


def test_orphaned_when_no_live_pane():
    u = uuid4()
    wedged, orphaned = detect_wedged_and_orphaned(
        [_sess(u, age_s=9999)], [], wedge_threshold_s=300, now=NOW
    )
    assert wedged == []
    assert [s.uuid for s in orphaned] == [u]


def test_remote_sessions_not_supervised():
    u = uuid4()  # host != "local" → another machine's session, skip it
    wedged, orphaned = detect_wedged_and_orphaned(
        [_sess(u, host="apricot", age_s=9999)], [], wedge_threshold_s=300, now=NOW
    )
    assert wedged == [] and orphaned == []


def test_auto_continue_gate():
    # Continuable when not parked and under the cap.
    assert should_auto_continue(None, 0, 3) is True
    assert should_auto_continue("in_progress", 2, 3) is True
    # Capped.
    assert should_auto_continue("in_progress", 3, 3) is False
    # Parked states never auto-continue.
    for parked in ("blocked", "user_review", "claire_review", "done"):
        assert should_auto_continue(parked, 0, 3) is False


def test_no_resumed_uuid_means_no_wedge_classification():
    # Older rclaude omits resumed_uuid → can't correlate → never act blind.
    u = uuid4()
    wedged, orphaned = detect_wedged_and_orphaned(
        [_sess(u, age_s=9999)], [_tmux(None)], wedge_threshold_s=300, now=NOW
    )
    assert wedged == []                       # not classified wedged without correlation
    assert [s.uuid for s in orphaned] == [u]  # no live pane matched → orphaned


# --- auto-resume selection (pure) ------------------------------------------

_W = 86_400  # resume recency window used in these tests


def _resume(sessions, tmux_rows, *, attempts=None, max_attempts=3, max_per_tick=3):
    return select_resume_candidates(
        sessions, tmux_rows,
        window_s=_W, now=NOW, attempts=attempts or {},
        max_attempts=max_attempts, max_per_tick=max_per_tick,
    )


def test_is_orchestrator_cwd():
    assert _is_orchestrator_cwd("/var/home/lilith/.local/share/claire/orchestrator")
    assert _is_orchestrator_cwd("/home/x/.local/share/claire/orchestrator/")  # trailing slash
    assert not _is_orchestrator_cwd("/home/x/Code/@projects/@lilith/lilith-platform.live")
    assert not _is_orchestrator_cwd(None)


def test_auto_resume_recency_window():
    fresh, old = uuid4(), uuid4()
    sessions = [_sess(fresh, age_s=10, cwd="/a"), _sess(old, age_s=_W + 5, cwd="/b")]
    to_resume, _ = _resume(sessions, [])  # no live panes
    keys = {str(s.uuid) for s in to_resume}
    assert str(fresh) in keys          # recently alive → candidate
    assert str(old) not in keys        # beyond window → ignored (graveyard)


def test_auto_resume_supersession_guard():
    """A dead session whose cwd already has a LIVE session must NOT be resumed."""
    dead, live = uuid4(), uuid4()
    sessions = [_sess(dead, age_s=30, cwd="/shared"), _sess(live, age_s=5, cwd="/shared")]
    tmux = [_tmux(str(live))]  # `live` has a pane; `dead` does not
    to_resume, skipped = _resume(sessions, tmux)
    assert [str(s.uuid) for s in to_resume] == []
    assert any(str(s.uuid) == str(dead) and r == "superseded-by-live-session-in-cwd"
               for s, r in skipped)


def test_auto_resume_excludes_orchestrator_workspace():
    orch = uuid4()
    sessions = [_sess(orch, age_s=20, cwd="/home/x/.local/share/claire/orchestrator")]
    to_resume, skipped = _resume(sessions, [])
    assert to_resume == []
    assert any(r == "orchestrator-workspace" for _, r in skipped)


def test_auto_resume_per_session_retry_cap():
    capped = uuid4()
    sessions = [_sess(capped, age_s=15, cwd="/a")]
    to_resume, skipped = _resume(sessions, [], attempts={str(capped): 3}, max_attempts=3)
    assert to_resume == []
    assert any(r == "retry-cap-reached" for _, r in skipped)


def test_auto_resume_per_tick_global_ceiling():
    ids = [uuid4() for _ in range(5)]
    sessions = [_sess(u, age_s=10, cwd=f"/cwd/{i}") for i, u in enumerate(ids)]
    to_resume, skipped = _resume(sessions, [], max_per_tick=2)
    assert len(to_resume) == 2  # ceiling enforced
    assert sum(1 for _, r in skipped if r == "per-tick-ceiling-deferred") == 3


def test_auto_resume_ignores_remote_and_live():
    local_dead, remote_dead, local_live = uuid4(), uuid4(), uuid4()
    sessions = [
        _sess(local_dead, age_s=10, cwd="/a"),
        _sess(remote_dead, host="apricot", age_s=10, cwd="/b"),
        _sess(local_live, age_s=10, cwd="/c"),
    ]
    tmux = [_tmux(str(local_live))]
    to_resume, _ = _resume(sessions, tmux)
    keys = {str(s.uuid) for s in to_resume}
    assert keys == {str(local_dead)}  # not remote (not ours), not live