implmentace plan guardu

backend/services/notification_service.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import asyncio
 import json
 import logging
-from datetime import datetime
+from datetime import datetime, timezone
 
 import asyncpg
 import httpx
@@ -119,6 +119,27 @@ async def run_fn_set_mode_with_discord(
     return str(new)
 
 
+async def notify_plan_vs_actual_fatal(
+    site_code: str,
+    slot_label: str,
+    interval_start_utc: datetime,
+    plan_grid_w: int,
+    actual_grid_w: int,
+    deviation_grid_w: int,
+    reason_code: str,
+    detail: str,
+) -> None:
+    """Discord po fatální odchylce plán vs. audit (síť) pro uzavřený 15min slot."""
+    utc_label = interval_start_utc.astimezone(timezone.utc).strftime("%Y-%m-%d %H:%M UTC")
+    msg = (
+        f"**Fatální odchylka plán vs. realita (síť)** – `{site_code}`\n"
+        f"Slot: **{slot_label}** (`{utc_label}`)\n"
+        f"**{reason_code}**: {detail}\n"
+        f"Plán grid: **{plan_grid_w}** W | Skutečnost: **{actual_grid_w}** W | Δ (act−plan): **{deviation_grid_w}** W"
+    )
+    await send_discord(msg, level="critical")
+
+
 async def send_discord(message: str, level: str = "info") -> bool:
     """
     Pošle notifikaci na Discord webhook.