Stage 07.4.3.2 — price polling, event bus and UI throttling

app/src/trading/auto/service.py

@@ -10,6 +10,7 @@ from src.trading.auto.state import AutoTradeState
 from src.trading.journal.service import JournalService
 from src.trading.strategies.base import BaseStrategy, StrategyContext
 from src.trading.strategies.registry import StrategyRegistry
+from src.core.event_bus import EventBus
 
 
 class AutoTradeService:
@@ -69,18 +70,30 @@ class AutoTradeService:
     # запустить активную торговлю
     def start(self) -> tuple[AutoTradeState, str]:
         state = self.get_state()
+        previous_status = state.status
 
         if state.status == "RUNNING":
-            self.start_loop()
             return state, "Автоторговля уже активна."
 
         if state.status == "OBSERVING":
             state.status = "RUNNING"
-            self.start_loop()
+            EventBus.emit(
+                "auto_status_changed",
+                {
+                    "previous_status": previous_status,
+                    "status": state.status,
+                },
+            )
             return state, "Автоторговля активирована."
 
         state.status = "RUNNING"
-        self.start_loop()
+        EventBus.emit(
+            "auto_status_changed",
+            {
+                "previous_status": previous_status,
+                "status": state.status,
+            },
+        )
         return state, "Автоторговля запущена."
 
     # включить режим наблюдения
@@ -89,11 +102,17 @@ class AutoTradeService:
         previous_status = state.status
 
         if previous_status == "OBSERVING":
-            self.start_loop()
             return state, "Режим наблюдения уже включён."
 
         state.status = "OBSERVING"
-        self.start_loop()
+
+        EventBus.emit(
+            "auto_status_changed",
+            {
+                "previous_status": previous_status,
+                "status": state.status,
+            },
+        )
 
         if previous_status == "OFF":
             return state, "Включён режим наблюдения."
@@ -103,6 +122,7 @@ class AutoTradeService:
     # полностью выключить автоторговлю
     def stop(self) -> tuple[AutoTradeState, str]:
         state = self.get_state()
+        previous_status = state.status
 
         if state.status == "OFF":
             self.stop_loop()
@@ -110,6 +130,15 @@ class AutoTradeService:
 
         state.status = "OFF"
         self.stop_loop()
+
+        EventBus.emit(
+            "auto_status_changed",
+            {
+                "previous_status": previous_status,
+                "status": state.status,
+            },
+        )
+
         return state, "Автоторговля выключена."
 
     # установить инструмент
@@ -132,7 +161,7 @@ class AutoTradeService:
         state.risk_percent = risk_percent
         return state
     
-        # установить плечо
+    # установить плечо
     def set_leverage(self, leverage: float) -> AutoTradeState:
         state = self.get_state()
         state.leverage = leverage
@@ -285,6 +314,9 @@ class AutoTradeService:
         reason: str,
         confidence: float,
     ) -> None:
+        previous_signal = state.last_signal
+        previous_decision_status = state.decision_status
+
         state.last_signal = signal
         state.last_signal_repeat_count = self._same_signal_count
         state.last_signal_confidence = confidence
@@ -296,6 +328,29 @@ class AutoTradeService:
             confidence=confidence,
         )
 
+        if previous_signal != state.last_signal:
+            EventBus.emit(
+                "auto_signal_changed",
+                {
+                    "previous_signal": previous_signal,
+                    "signal": state.last_signal,
+                    "repeat_count": state.last_signal_repeat_count,
+                    "confidence": state.last_signal_confidence,
+                },
+            )
+
+        if previous_decision_status != state.decision_status:
+            EventBus.emit(
+                "auto_decision_changed",
+                {
+                    "previous_decision_status": previous_decision_status,
+                    "decision_status": state.decision_status,
+                    "signal": state.last_signal,
+                    "repeat_count": state.last_signal_repeat_count,
+                    "confidence": state.last_signal_confidence,
+                },
+            )
+
     # записать одиночный сигнал в журнал
     def _log_signal_event(
         self,