uprava zapisovani casu do deye (nevyvolava self_sustain), notifikace na discord pri zmene rezimu

backend/services/notification_service.py

@@ -3,7 +3,9 @@
 from __future__ import annotations
 
 import logging
+from datetime import datetime
 
+import asyncpg
 import httpx
 
 from app.config import get_settings
@@ -11,6 +13,80 @@ from app.config import get_settings
 logger = logging.getLogger(__name__)
 
 
+def _discord_level_for_mode_change(activated_by: str) -> str:
+    if activated_by == "system:mismatch":
+        return "critical"
+    if activated_by.startswith("system:"):
+        return "warning"
+    return "info"
+
+
+async def notify_operating_mode_changed(
+    site_code: str,
+    previous_mode: str,
+    new_mode: str,
+    activated_by: str,
+    notes: str | None,
+    *,
+    level: str | None = None,
+) -> None:
+    lvl = level or _discord_level_for_mode_change(activated_by)
+    note_line = f"\nPoznámka: {notes}" if notes else ""
+    msg = (
+        f"Přepnutí provozního režimu – lokalita `{site_code}`\n"
+        f"**{previous_mode}** → **{new_mode}**\n"
+        f"Aktivoval: `{activated_by}`{note_line}"
+    )
+    await send_discord(msg, level=lvl)
+
+
+async def run_fn_set_mode_with_discord(
+    conn: asyncpg.Connection,
+    site_id: int,
+    mode_code: str,
+    activated_by: str,
+    valid_until: datetime | None,
+    notes: str | None,
+    *,
+    notify_level: str | None = None,
+) -> str:
+    """
+    Zavolá ems.fn_set_mode. Při skutečné změně režimu pošle Discord (pokud je webhook).
+    Vrátí aktuální mode_code z DB po volání.
+    """
+    prev = await conn.fetchval(
+        "SELECT mode_code FROM ems.site_operating_mode WHERE site_id = $1",
+        site_id,
+    )
+    await conn.execute(
+        "SELECT ems.fn_set_mode($1, $2, $3, $4, $5)",
+        site_id,
+        mode_code,
+        activated_by,
+        valid_until,
+        notes,
+    )
+    new = await conn.fetchval(
+        "SELECT mode_code FROM ems.site_operating_mode WHERE site_id = $1",
+        site_id,
+    )
+    if new is None:
+        new = mode_code
+    if prev is not None and prev != new:
+        site_code = await conn.fetchval(
+            "SELECT code FROM ems.site WHERE id = $1", site_id
+        )
+        await notify_operating_mode_changed(
+            site_code or str(site_id),
+            str(prev),
+            str(new),
+            activated_by,
+            notes,
+            level=notify_level,
+        )
+    return str(new)
+
+
 async def send_discord(message: str, level: str = "info") -> bool:
     """
     Pošle notifikaci na Discord webhook.
@@ -65,6 +141,21 @@ async def notify_self_sustain_activated(site_code: str, reason: str) -> None:
     await send_discord(msg, level="critical")
 
 
+async def notify_modbus_clock_verify_exhausted(
+    site_code: str,
+    asset_code: str,
+    written: tuple[int, int, int],
+    actual: tuple[int, int, int],
+) -> None:
+    msg = (
+        f"Modbus **systémový čas 62–64** – po 3 neúspěšných ověřeních **bez** přepnutí režimu.\n"
+        f"Lokalita `{site_code}`, zařízení `{asset_code}`\n"
+        f"Zapsáno: `{written}` | Přečteno: `{actual}`\n"
+        f"Doporučení: zkontrolovat firmware/RS485; režim EMS se nemění automaticky."
+    )
+    await send_discord(msg, level="critical")
+
+
 async def notify_daily_economics(
     site_code: str,
     day: str,