refactor(zt): update state and watch management

go-client/apps/zt/logic/watch.go

@@ -0,0 +1,66 @@
+package logic
+
+import (
+	"sync"
+	"time"
+)
+
+var (
+	WatchExpireTime  = 5 * time.Minute
+	WatchReThreshold = 0.61
+
+	OpenWatch   *WatchMu
+	PosbuyWatch *WatchMu
+)
+
+type dipWatch struct {
+	LastClose float64
+	ExpiresAt time.Time
+}
+
+type WatchMu struct {
+	mu   *sync.Mutex
+	Data map[string]dipWatch
+}
+
+func InitWatch() {
+	OpenWatch = &WatchMu{
+		Data: make(map[string]dipWatch),
+	}
+	PosbuyWatch = &WatchMu{
+		Data: make(map[string]dipWatch),
+	}
+}
+
+func (w *WatchMu) Triggered(tag, code string, price float64) bool {
+	if price <= 0 {
+		return false
+	}
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	now := time.Now()
+	watch, ok := w.Data[code]
+	if !ok || now.After(watch.ExpiresAt) || now.Equal(watch.ExpiresAt) {
+		w.Data[code] = dipWatch{LastClose: price, ExpiresAt: now.Add(WatchExpireTime)}
+		logf("INFO", "[%s-观察] %s 现价=%.2f", tag, code, price)
+		return false
+	}
+	if price < watch.LastClose {
+		watch.LastClose = price
+		watch.ExpiresAt = now.Add(WatchExpireTime)
+		w.Data[code] = watch
+		logf("INFO", "[%s-下跌] %s 刷新低点=%.2f", tag, code, price)
+		return false
+	}
+	rebound := (price - watch.LastClose) / watch.LastClose * 100
+	if rebound <= 0 {
+		return false
+	}
+	if rebound < WatchReThreshold {
+		logf("INFO", "[%s-等待] %s 反弹=%.2f%% 阈值=%.2f%%", tag, code, rebound, WatchReThreshold)
+		return false
+	}
+	delete(w.Data, code)
+	logf("INFO", "[%s-触发] %s 反弹=%.2f%% 低点=%.2f", tag, code, rebound, watch.LastClose)
+	return true
+}