feat: implement blackout queue and recovery revalidation (TASK-CODE-008)

src/core/blackout_manager.py

@@ -0,0 +1,100 @@
+"""Blackout policy and queued order-intent manager."""
+
+from __future__ import annotations
+
+from collections import deque
+from dataclasses import dataclass
+from datetime import UTC, datetime, time
+from zoneinfo import ZoneInfo
+
+
+@dataclass(frozen=True)
+class BlackoutWindow:
+    start: time
+    end: time
+
+    def contains(self, kst_time: time) -> bool:
+        if self.start <= self.end:
+            return self.start <= kst_time < self.end
+        return kst_time >= self.start or kst_time < self.end
+
+
+@dataclass
+class QueuedOrderIntent:
+    market_code: str
+    exchange_code: str
+    stock_code: str
+    order_type: str
+    quantity: int
+    price: float
+    source: str
+    queued_at: datetime
+    attempts: int = 0
+
+
+def parse_blackout_windows_kst(raw: str) -> list[BlackoutWindow]:
+    """Parse comma-separated KST windows like '23:30-00:10,11:20-11:30'."""
+    windows: list[BlackoutWindow] = []
+    for token in raw.split(","):
+        span = token.strip()
+        if not span or "-" not in span:
+            continue
+        start_raw, end_raw = [part.strip() for part in span.split("-", 1)]
+        try:
+            start_h, start_m = [int(v) for v in start_raw.split(":", 1)]
+            end_h, end_m = [int(v) for v in end_raw.split(":", 1)]
+        except (ValueError, TypeError):
+            continue
+        if not (0 <= start_h <= 23 and 0 <= end_h <= 23):
+            continue
+        if not (0 <= start_m <= 59 and 0 <= end_m <= 59):
+            continue
+        windows.append(BlackoutWindow(start=time(start_h, start_m), end=time(end_h, end_m)))
+    return windows
+
+
+class BlackoutOrderManager:
+    """Tracks blackout mode and queues order intents until recovery."""
+
+    def __init__(
+        self,
+        *,
+        enabled: bool,
+        windows: list[BlackoutWindow],
+        max_queue_size: int = 500,
+    ) -> None:
+        self.enabled = enabled
+        self._windows = windows
+        self._queue: deque[QueuedOrderIntent] = deque()
+        self._was_blackout = False
+        self._max_queue_size = max_queue_size
+
+    @property
+    def pending_count(self) -> int:
+        return len(self._queue)
+
+    def in_blackout(self, now: datetime | None = None) -> bool:
+        if not self.enabled or not self._windows:
+            return False
+        now = now or datetime.now(UTC)
+        kst_now = now.astimezone(ZoneInfo("Asia/Seoul")).timetz().replace(tzinfo=None)
+        return any(window.contains(kst_now) for window in self._windows)
+
+    def enqueue(self, intent: QueuedOrderIntent) -> bool:
+        if len(self._queue) >= self._max_queue_size:
+            return False
+        self._queue.append(intent)
+        return True
+
+    def pop_recovery_batch(self, now: datetime | None = None) -> list[QueuedOrderIntent]:
+        in_blackout_now = self.in_blackout(now)
+        batch: list[QueuedOrderIntent] = []
+        if not in_blackout_now and self._queue:
+            while self._queue:
+                batch.append(self._queue.popleft())
+        self._was_blackout = in_blackout_now
+        return batch
+
+    def requeue(self, intent: QueuedOrderIntent) -> None:
+        if len(self._queue) < self._max_queue_size:
+            self._queue.append(intent)