"""update_thresholds intent RPC handler tests (REQ-040 / BAT-011)."""
from __future__ import annotations

from datetime import datetime
from decimal import Decimal

import pytest

from trex_core.application.intents import IntentService
from trex_core.application.messaging import RpcRequest
from trex_core.application.messaging_handlers import make_intent_rpc_handler
from trex_core.application.watchdog import WatchdogStore
from trex_core.domain.slot import SlotService, SlotState
from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository



@pytest.fixture
def repo():
    return InMemorySlotRepository()


@pytest.fixture
def service(repo):
    return SlotService(repo)


@pytest.fixture
def watchdog():
    return WatchdogStore()


@pytest.fixture
def handler(repo, service, watchdog):
    intent_service = IntentService(service, repo, repo._intent_store if hasattr(repo, "_intent_store") else _StubIntentStore())
    return make_intent_rpc_handler(intent_service, slot_service=service, watchdog_store=watchdog)


class _StubIntentStore:
    def try_insert(self, *a, **k):
        return True


def _holding(service, repo, *, symbol="005930", stop_loss_price=None,
             take_profit_price=None, forced_close_at=None):
    from uuid import uuid4
    pid = f"pf-{uuid4().hex[:8]}"
    repo.reconcile_universe("default", {pid: "SYM"})
    slot = repo.find_slot_by_portfolio("default", pid)
    pending = service.transit_slot(
        slot.slot_id, SlotState.INACTIVE, SlotState.PENDING_BUY,
        reason="buy", actor="test", symbol=symbol,
        stop_loss_price=stop_loss_price, take_profit_price=take_profit_price,
        forced_close_at=forced_close_at,
    )
    return service.transit_slot(
        pending.slot_id, SlotState.PENDING_BUY, SlotState.HOLDING,
        reason="filled", actor="test", avg_price=50000.0, qty=1.0,
    )


def _req(**body):
    return RpcRequest(payload={"action": "update_thresholds", **body}, correlation_id="c1")


def test_updates_stop_loss(handler, service, repo):
    """AC-1: stop_loss_price is updated in the slot."""
    slot = _holding(service, repo)
    resp = handler(_req(slot_id=str(slot.slot_id), stop_loss_price=50000))
    assert resp.payload["status"] == "updated"
    assert repo.fetch_slot(slot.slot_id).stop_loss_price == Decimal("50000")


def test_updates_take_profit_and_forced_close(handler, service, repo):
    """AC-2: take_profit_price and forced_close_at updated together."""
    slot = _holding(service, repo)
    resp = handler(_req(
        slot_id=str(slot.slot_id),
        take_profit_price=80000,
        forced_close_at="2026-06-07T15:10:00+09:00",
    ))
    assert resp.payload["status"] == "updated"
    updated = repo.fetch_slot(slot.slot_id)
    assert updated.take_profit_price == Decimal("80000")
    assert updated.forced_close_at == datetime.fromisoformat("2026-06-07T15:10:00+09:00")


def test_resets_watchdog_last_seen(handler, service, repo, watchdog):
    """AC-3: update_thresholds resets the watchdog last_seen_at."""
    slot = _holding(service, repo)
    assert str(slot.slot_id) not in watchdog._store
    handler(_req(slot_id=str(slot.slot_id), stop_loss_price=50000))
    assert str(slot.slot_id) in watchdog._store


def test_partial_update_keeps_other_fields(handler, service, repo):
    """AC-4: omitted fields keep their current value."""
    slot = _holding(service, repo, take_profit_price=Decimal("90000"))
    handler(_req(slot_id=str(slot.slot_id), stop_loss_price=50000))
    updated = repo.fetch_slot(slot.slot_id)
    assert updated.stop_loss_price == Decimal("50000")
    assert updated.take_profit_price == Decimal("90000")  # untouched


def test_explicit_null_clears(handler, service, repo):
    """AC-5: explicit null clears the threshold."""
    slot = _holding(service, repo, stop_loss_price=Decimal("50000"))
    handler(_req(slot_id=str(slot.slot_id), stop_loss_price=None))
    assert repo.fetch_slot(slot.slot_id).stop_loss_price is None


def test_non_holding_ignored(handler, service, repo, watchdog):
    """AC-6: non-holding slot → ignored + not_holding reason, no watchdog reset."""
    repo.reconcile_universe("default", {"pf-inactive": "SYM"})
    inactive = repo.find_slot_by_portfolio("default", "pf-inactive")
    resp = handler(_req(slot_id=str(inactive.slot_id), stop_loss_price=50000))
    assert resp.payload["status"] == "ignored"
    assert resp.payload["reason"] == "not_holding"
    assert str(inactive.slot_id) not in watchdog._store


def test_reply_updated_status(handler, service, repo):
    """AC-7: success returns {status: updated, slot_id}."""
    slot = _holding(service, repo)
    resp = handler(_req(slot_id=str(slot.slot_id), forced_close_at="2026-06-07T15:10:00+09:00"))
    assert resp.payload == {"status": "updated", "slot_id": str(slot.slot_id)}


def test_unknown_slot_ignored(handler):
    """Unknown slot → ignored + slot_not_found reason."""
    from uuid import uuid4
    sid = uuid4()
    resp = handler(_req(slot_id=str(sid), stop_loss_price=50000))
    assert resp.payload["status"] == "ignored"
    assert resp.payload["reason"] == "slot_not_found"