Initial commit: stock analysis backend and prototype UI.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/alerts.py

@@ -0,0 +1,67 @@
+"""预警引擎：拉取实时价格，评估规则，触发即生成站内事件。"""
+from __future__ import annotations
+
+import datetime as dt
+
+from sqlalchemy import select
+
+import akshare_service as svc
+import notifier
+from db import get_session
+from models import AlertRule, AlertEvent
+
+KIND_LABEL = {
+    "price_above": "价格突破",
+    "price_below": "价格跌破",
+    "pct_above": "涨幅达到",
+    "pct_below": "跌幅达到",
+}
+
+
+def _hit(kind, threshold, q):
+    price, pct = q["price"], q["pct"]
+    if kind == "price_above":
+        return price >= threshold, price
+    if kind == "price_below":
+        return price <= threshold, price
+    if kind == "pct_above":
+        return pct >= threshold, pct
+    if kind == "pct_below":
+        return pct <= -abs(threshold), pct
+    return False, price
+
+
+def check_alerts():
+    with get_session() as s:
+        rules = s.execute(select(AlertRule).where(AlertRule.status == "active")).scalars().all()
+        if not rules:
+            return {"checked": 0, "triggered": 0}
+        codes = list({r.code for r in rules})
+        quotes = svc.realtime_quotes(codes)
+        triggered = 0
+        push_msgs = []
+        for r in rules:
+            q = quotes.get(r.code)
+            if not q:
+                continue
+            hit, val = _hit(r.kind, r.threshold, q)
+            r.last_value = q["price"]
+            if hit:
+                unit = "" if r.kind.startswith("price") else "%"
+                msg = (f"{q['name']} {KIND_LABEL.get(r.kind, r.kind)} {r.threshold}{unit}"
+                       f"（现价 {q['price']}，{q['pct']:+.2f}%）")
+                s.add(AlertEvent(rule_id=r.id, code=r.code, name=q["name"], message=msg, value=val))
+                r.status = "triggered"
+                r.triggered_at = dt.datetime.now()
+                triggered += 1
+                push_msgs.append(msg)
+        s.commit()
+
+    # 触发后向已配置渠道推送（站外）
+    if push_msgs and notifier.any_enabled():
+        try:
+            notifier.notify("【智策预警】" + (push_msgs[0] if len(push_msgs) == 1 else f"{len(push_msgs)} 条预警触发"),
+                            "\n".join(push_msgs))
+        except Exception:
+            pass
+    return {"checked": len(rules), "triggered": triggered}