"""Snapshot RPC handler tests (REQ-021 AC-2, BAT-007 stub-shape)."""
from __future__ import annotations

from datetime import date

from trex_core.adapters.persistence.in_memory_intent_store import InMemoryIntentStore
from trex_core.application.intents import BuyIntent, IntentService
from trex_core.application.messaging import RpcRequest
from trex_core.application.messaging_handlers import make_snapshot_rpc_handler
from trex_core.domain.slot import SlotService
from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository

DAY = date(2026, 6, 5)


def _wire():
    repo = InMemorySlotRepository()
    svc = SlotService(repo)
    intents = IntentService(svc, repo, InMemoryIntentStore())
    svc.preallocate_daily_slots(DAY, 3)
    return repo, svc, intents


def _req(view="all", strategy_id=None):
    return RpcRequest(
        payload={
            "view": view,
            "strategy_id": strategy_id,
            "trading_date": DAY.isoformat(),
        },
        correlation_id="snap-cid",
    )


def test_snapshot_returns_all_slots_and_capacity():
    repo, svc, intents = _wire()
    intents.submit_buy(BuyIntent(
        intent_id="b1", trading_date=DAY, symbol="005930", qty=10,
        strategy_id="A", portfolio_id="PF-1",
    ))
    handler = make_snapshot_rpc_handler(repo, svc)
    resp = handler(_req())
    assert resp.payload["trading_date"] == DAY.isoformat()
    assert resp.payload["view"] == "all"
    assert len(resp.payload["slots"]) == 3  # all 3 slots returned
    cap = resp.payload["capacity"]
    assert cap["pending_count"] == 1 and cap["idle_count"] == 2


def test_snapshot_open_view_filters_to_active_slots():
    repo, svc, intents = _wire()
    intents.submit_buy(BuyIntent(
        intent_id="b1", trading_date=DAY, symbol="005930", qty=10, strategy_id="A",
        portfolio_id="PF-1",
    ))
    handler = make_snapshot_rpc_handler(repo, svc)
    resp = handler(_req(view="open"))
    statuses = {s["status"] for s in resp.payload["slots"]}
    assert "idle" not in statuses
    assert statuses == {"pending_buy"}


def test_snapshot_strategy_id_filter():
    repo, svc, intents = _wire()
    intents.submit_buy(BuyIntent(
        intent_id="b1", trading_date=DAY, symbol="005930", qty=10, strategy_id="A",
        portfolio_id="PF-1",
    ))
    intents.submit_buy(BuyIntent(
        intent_id="b2", trading_date=DAY, symbol="000660", qty=5, strategy_id="B",
        portfolio_id="PF-2",
    ))
    handler = make_snapshot_rpc_handler(repo, svc)
    resp = handler(_req(view="open", strategy_id="A"))
    assert len(resp.payload["slots"]) == 1
    assert resp.payload["slots"][0]["strategy_id"] == "A"
    assert resp.payload["slots"][0]["symbol"] == "005930"


# --- dcy-016 / REQ-021/034: operator query watchdog suppression -------------
class _RecWatchdog:
    def __init__(self):
        self.updated = []

    def update(self, slot_id):
        self.updated.append(str(slot_id))


def _holding_slot(repo, svc):
    from trex_core.domain.slot import SlotState
    slot = next(s for s in repo.list_slots(DAY) if s.status is SlotState.IDLE)
    svc.transit_slot(slot.slot_id, SlotState.IDLE, SlotState.PENDING_BUY,
                     reason="t", actor="t", symbol="005930", portfolio_id="PF-1", qty=10)
    svc.transit_slot(slot.slot_id, SlotState.PENDING_BUY, SlotState.HOLDING,
                     reason="t", actor="t", avg_price=1000)
    return str(slot.slot_id)


def test_strategy_poll_touches_watchdog_by_default():
    repo, svc, intents = _wire()
    sid = _holding_slot(repo, svc)
    wd = _RecWatchdog()
    handler = make_snapshot_rpc_handler(repo, svc, watchdog_store=wd)
    handler(_req())  # no actor flag => legacy liveness touch (REQ-034)
    assert sid in wd.updated


def test_operator_query_suppresses_watchdog_touch():
    repo, svc, intents = _wire()
    _holding_slot(repo, svc)
    wd = _RecWatchdog()
    handler = make_snapshot_rpc_handler(repo, svc, watchdog_store=wd)
    req = RpcRequest(
        payload={"view": "all", "trading_date": DAY.isoformat(),
                 "actor": "operator", "touch_watchdog": False},
        correlation_id="op",
    )
    handler(req)
    assert wd.updated == []  # dcy-016 R-4: operator query is not a liveness signal