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Aggiornamento freeze_alert.py

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daniele
2025-12-24 20:03:08 +01:00
parent 192eacde2d
commit 7733ec1a86
1 changed files with 339 additions and 97 deletions
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services/telegram-bot/freeze_alert.py
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@@ -1,134 +1,376 @@
import requests
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import datetime
import html
import json
import logging
import os
import time
from dateutil import parser
from logging.handlers import RotatingFileHandler
from typing import Dict, Optional, Tuple
from zoneinfo import ZoneInfo
# --- CONFIGURAZIONE UTENTE ---
TELEGRAM_BOT_TOKEN = "8155587974:AAF9OekvBpixtk8ZH6KoIc0L8edbhdXt7A4"
TELEGRAM_CHAT_IDS = ["64463169", "24827341", "132455422", "5405962012"]
import requests
from dateutil import parser
# --- COORDINATE (Strada Cà Toro, 12 - San Marino) ---
# =============================================================================
# FREEZE ALERT (next 48h) - San Marino (Casa)
#
# Scopo:
# Notificare su Telegram se nelle prossime 48 ore è prevista una temperatura
# minima < SOGLIA_GELO.
#
# Requisiti operativi applicati (come gli altri script):
# - Nessun token in chiaro (legge da env o file /etc/telegram_dpc_bot_token)
# - Log su file + modalità DEBUG (DEBUG=1)
# - Timezone robusta (naive -> Europe/Rome; offset -> conversione)
# - Nessun Telegram in caso di errori (solo log)
# - Anti-spam: notifica solo su nuovo evento o variazione significativa
#
# Esecuzione:
# DEBUG=1 python3 freeze_alert.py
# tail -n 200 freeze_alert.log
# =============================================================================
DEBUG = os.environ.get("DEBUG", "0").strip() == "1"
# ----------------- TELEGRAM -----------------
TELEGRAM_CHAT_IDS = ["64463169", "24827341", "132455422", "5405962012"]
TOKEN_FILE_HOME = os.path.expanduser("~/.telegram_dpc_bot_token")
TOKEN_FILE_ETC = "/etc/telegram_dpc_bot_token"
# ----------------- LOCATION -----------------
LAT = 43.9356
LON = 12.4296
LOCATION_NAME = "🏠 Casa (Strada Cà Toro)"
# Soglia Gelo (°C)
SOGLIA_GELO = 0.0
# ----------------- THRESHOLD -----------------
SOGLIA_GELO = 0.0 # °C (allerta se min < 0.0°C)
# File di stato
# ----------------- HORIZON -----------------
HOURS_AHEAD = 48
FORECAST_DAYS = 3 # per coprire bene 48h
# ----------------- TIMEZONE -----------------
TZ = "Europe/Rome"
TZINFO = ZoneInfo(TZ)
# ----------------- FILES -----------------
STATE_FILE = "/home/daniely/docker/telegram-bot/freeze_state.json"
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
LOG_FILE = os.path.join(BASE_DIR, "freeze_alert.log")
def load_state():
# ----------------- OPEN-METEO -----------------
OPEN_METEO_URL = "https://api.open-meteo.com/v1/forecast"
HTTP_HEADERS = {"User-Agent": "rpi-freeze-alert/2.0"}
# =============================================================================
# LOGGING
# =============================================================================
def setup_logger() -> logging.Logger:
logger = logging.getLogger("freeze_alert")
logger.setLevel(logging.DEBUG if DEBUG else logging.INFO)
logger.handlers.clear()
fh = RotatingFileHandler(LOG_FILE, maxBytes=1_000_000, backupCount=5, encoding="utf-8")
fh.setLevel(logging.DEBUG)
fmt = logging.Formatter("%(asctime)s %(levelname)s %(message)s")
fh.setFormatter(fmt)
logger.addHandler(fh)
if DEBUG:
sh = logging.StreamHandler()
sh.setLevel(logging.DEBUG)
sh.setFormatter(fmt)
logger.addHandler(sh)
return logger
LOGGER = setup_logger()
# =============================================================================
# UTILS
# =============================================================================
def now_local() -> datetime.datetime:
return datetime.datetime.now(TZINFO)
def read_text_file(path: str) -> str:
try:
with open(path, "r", encoding="utf-8") as f:
return f.read().strip()
except FileNotFoundError:
return ""
except PermissionError:
LOGGER.debug("Permission denied reading %s", path)
return ""
except Exception as e:
LOGGER.exception("Error reading %s: %s", path, e)
return ""
def load_bot_token() -> str:
tok = os.environ.get("TELEGRAM_BOT_TOKEN", "").strip()
if tok:
return tok
tok = read_text_file(TOKEN_FILE_HOME)
if tok:
return tok
tok = read_text_file(TOKEN_FILE_ETC)
return tok.strip() if tok else ""
def parse_time_to_local(t: str) -> datetime.datetime:
"""
Parsing robusto:
- se naive (frequente con timezone=Europe/Rome) -> interpreta come Europe/Rome
- se con offset -> converte in Europe/Rome
"""
dt = parser.isoparse(t)
if dt.tzinfo is None:
return dt.replace(tzinfo=TZINFO)
return dt.astimezone(TZINFO)
def fmt_dt(dt: datetime.datetime) -> str:
return dt.strftime("%d/%m alle %H:%M")
# =============================================================================
# TELEGRAM
# =============================================================================
def telegram_send_html(message_html: str) -> bool:
"""
Non solleva eccezioni. Ritorna True se almeno un invio ha successo.
IMPORTANTE: chiamare solo per allerte (mai per errori).
"""
token = load_bot_token()
if not token:
LOGGER.warning("Telegram token missing: message not sent.")
return False
url = f"https://api.telegram.org/bot{token}/sendMessage"
base_payload = {
"text": message_html,
"parse_mode": "HTML",
"disable_web_page_preview": True,
}
sent_ok = False
with requests.Session() as s:
for chat_id in TELEGRAM_CHAT_IDS:
payload = dict(base_payload)
payload["chat_id"] = chat_id
try:
resp = s.post(url, json=payload, timeout=15)
if resp.status_code == 200:
sent_ok = True
else:
LOGGER.error("Telegram error chat_id=%s status=%s body=%s",
chat_id, resp.status_code, resp.text[:500])
time.sleep(0.25)
except Exception as e:
LOGGER.exception("Telegram exception chat_id=%s err=%s", chat_id, e)
return sent_ok
# =============================================================================
# STATE
# =============================================================================
def load_state() -> Dict:
default = {
"alert_active": False,
"min_temp": 100.0,
"min_time": "",
"signature": "",
"updated": "",
}
if os.path.exists(STATE_FILE):
try:
with open(STATE_FILE, 'r') as f: return json.load(f)
except: pass
return {"alert_active": False, "min_temp": 100.0}
with open(STATE_FILE, "r", encoding="utf-8") as f:
data = json.load(f) or {}
default.update(data)
except Exception as e:
LOGGER.exception("State read error: %s", e)
return default
def save_state(active, min_temp):
def save_state(state: Dict) -> None:
try:
with open(STATE_FILE, 'w') as f:
json.dump({"alert_active": active, "min_temp": min_temp, "updated": str(datetime.datetime.now())}, f)
except: pass
os.makedirs(os.path.dirname(STATE_FILE), exist_ok=True)
state["updated"] = now_local().isoformat()
with open(STATE_FILE, "w", encoding="utf-8") as f:
json.dump(state, f, ensure_ascii=False, indent=2)
except Exception as e:
LOGGER.exception("State write error: %s", e)
def send_telegram_message(message):
if not TELEGRAM_BOT_TOKEN or "INSERISCI" in TELEGRAM_BOT_TOKEN:
print(f"[TEST OUT] {message}")
return
url = f"https://api.telegram.org/bot{TELEGRAM_BOT_TOKEN}/sendMessage"
for chat_id in TELEGRAM_CHAT_IDS:
try:
requests.post(url, json={"chat_id": chat_id, "text": message, "parse_mode": "Markdown"}, timeout=10)
time.sleep(0.2)
except: pass
def get_forecast():
url = "https://api.open-meteo.com/v1/forecast"
# =============================================================================
# OPEN-METEO
# =============================================================================
def get_forecast() -> Optional[Dict]:
params = {
"latitude": LAT, "longitude": LON,
"latitude": LAT,
"longitude": LON,
"hourly": "temperature_2m",
"timezone": "Europe/Rome",
"forecast_days": 3 # Prendiamo 3 giorni per coprire bene le 48h
"timezone": TZ,
"forecast_days": FORECAST_DAYS,
}
try:
r = requests.get(url, params=params, timeout=10)
r = requests.get(OPEN_METEO_URL, params=params, headers=HTTP_HEADERS, timeout=25)
if r.status_code == 400:
try:
j = r.json()
LOGGER.error("Open-Meteo 400: %s", j.get("reason", j))
except Exception:
LOGGER.error("Open-Meteo 400: %s", r.text[:500])
return None
r.raise_for_status()
return r.json()
except: return None
except Exception as e:
LOGGER.exception("Open-Meteo request error: %s", e)
return None
def analyze_freeze():
print("--- Controllo Gelo ---")
data = get_forecast()
if not data: return
hourly = data.get("hourly", {})
times = hourly.get("time", [])
temps = hourly.get("temperature_2m", [])
now = datetime.datetime.now(ZoneInfo("Europe/Rome"))
limit_time = now + datetime.timedelta(hours=48)
def compute_min_next_48h(data: Dict) -> Optional[Tuple[float, datetime.datetime]]:
hourly = data.get("hourly", {}) or {}
times = hourly.get("time", []) or []
temps = hourly.get("temperature_2m", []) or []
n = min(len(times), len(temps))
if n == 0:
return None
now = now_local()
limit_time = now + datetime.timedelta(hours=HOURS_AHEAD)
min_temp_val = 100.0
min_temp_time = None
# Cerca la minima nelle prossime 48 ore
for i, t_str in enumerate(times):
t_obj = parser.isoparse(t_str).replace(tzinfo=ZoneInfo("Europe/Rome"))
# Filtra solo futuro prossimo (da adesso a +48h)
if t_obj > now and t_obj <= limit_time:
temp = temps[i]
if temp < min_temp_val:
min_temp_val = temp
min_temp_time = t_obj
min_temp_time: Optional[datetime.datetime] = None
for i in range(n):
try:
t_obj = parse_time_to_local(times[i])
except Exception:
continue
# solo intervallo (now, now+48h]
if t_obj <= now or t_obj > limit_time:
continue
try:
temp = float(temps[i])
except Exception:
continue
if temp < min_temp_val:
min_temp_val = temp
min_temp_time = t_obj
if min_temp_time is None:
return None
return float(min_temp_val), min_temp_time
# =============================================================================
# MAIN
# =============================================================================
def analyze_freeze() -> None:
LOGGER.info("--- Controllo Gelo (next %sh) ---", HOURS_AHEAD)
data = get_forecast()
if not data:
# errori: solo log
return
result = compute_min_next_48h(data)
if not result:
LOGGER.error("Impossibile calcolare minima nelle prossime %s ore.", HOURS_AHEAD)
return
min_temp_val, min_temp_time = result
is_freezing = (min_temp_val < SOGLIA_GELO)
# --- LOGICA ALLARME ---
state = load_state()
was_active = state.get("alert_active", False)
# C'è rischio gelo?
is_freezing = min_temp_val < SOGLIA_GELO
if is_freezing:
# Formatta orario
time_str = min_temp_time.strftime('%d/%m alle %H:%M')
# SCENARIO A: NUOVO GELO (o peggioramento significativo di 2 gradi)
if not was_active or min_temp_val < state.get("min_temp", 0) - 2.0:
msg = (
f"❄️ **ALLERTA GELO**\n"
f"📍 {LOCATION_NAME}\n\n"
f"Prevista temperatura minima di **{min_temp_val:.1f}°C**\n"
f"📅 Quando: {time_str}\n\n"
f"_Proteggere piante e tubature esterne._"
)
send_telegram_message(msg)
save_state(True, min_temp_val)
print(f"Allerta inviata: {min_temp_val}°C")
else:
print(f"Gelo già notificato ({min_temp_val}°C).")
# Aggiorniamo comunque la minima registrata nel file
save_state(True, min(min_temp_val, state.get("min_temp", 100)))
was_active = bool(state.get("alert_active", False))
last_sig = str(state.get("signature", ""))
# SCENARIO B: ALLARME RIENTRATO
elif was_active and not is_freezing:
# firma per evitare spam: temp (0.1) + timestamp
sig = f"{min_temp_val:.1f}|{min_temp_time.isoformat()}"
if is_freezing:
# invia se:
# - prima non era attivo, oppure
# - peggiora di almeno 2°C, oppure
# - cambia la firma (es. orario minima spostato o min diversa)
prev_min = float(state.get("min_temp", 100.0) or 100.0)
should_notify = (not was_active) or (min_temp_val < prev_min - 2.0) or (sig != last_sig)
if should_notify:
msg = (
"❄️ <b>ALLERTA GELO</b><br/>"
f"📍 {html.escape(LOCATION_NAME)}<br/><br/>"
f"Minima prevista (entro {HOURS_AHEAD}h): <b>{min_temp_val:.1f}°C</b><br/>"
f"📅 Quando: <b>{html.escape(fmt_dt(min_temp_time))}</b><br/><br/>"
"<i>Proteggere piante e tubature esterne.</i>"
)
ok = telegram_send_html(msg)
if ok:
LOGGER.info("Allerta gelo inviata. Tmin=%.1f°C at %s", min_temp_val, min_temp_time.isoformat())
else:
LOGGER.warning("Allerta gelo NON inviata (token mancante o errore Telegram).")
else:
LOGGER.info("Gelo già notificato (invariato o peggioramento < 2°C). Tmin=%.1f°C", min_temp_val)
state.update({
"alert_active": True,
"min_temp": min_temp_val,
"min_time": min_temp_time.isoformat(),
"signature": sig,
})
save_state(state)
return
# --- RIENTRO ---
if was_active and not is_freezing:
msg = (
f"☀️ **RISCHIO GELO RIENTRATO**\n"
f"📍 {LOCATION_NAME}\n\n"
f"Le previsioni per le prossime 48 ore indicano temperature sopra lo zero.\n"
f"Minima prevista: {min_temp_val:.1f}°C."
"☀️ <b>RISCHIO GELO RIENTRATO</b><br/>"
f"📍 {html.escape(LOCATION_NAME)}<br/><br/>"
f"Le previsioni nelle prossime {HOURS_AHEAD} ore indicano temperature sopra lo zero.<br/>"
f"Minima prevista: <b>{min_temp_val:.1f}°C</b> (alle {html.escape(fmt_dt(min_temp_time))})."
)
send_telegram_message(msg)
save_state(False, min_temp_val)
print("Allarme rientrato.")
else:
save_state(False, min_temp_val)
print(f"Nessun gelo. Minima: {min_temp_val}°C")
ok = telegram_send_html(msg)
if ok:
LOGGER.info("Rientro gelo notificato. Tmin=%.1f°C", min_temp_val)
else:
LOGGER.warning("Rientro gelo NON inviato (token mancante o errore Telegram).")
state.update({
"alert_active": False,
"min_temp": min_temp_val,
"min_time": min_temp_time.isoformat(),
"signature": "",
})
save_state(state)
return
# --- TRANQUILLO ---
state.update({
"alert_active": False,
"min_temp": min_temp_val,
"min_time": min_temp_time.isoformat(),
"signature": "",
})
save_state(state)
LOGGER.info("Nessun gelo. Tmin=%.1f°C at %s", min_temp_val, min_temp_time.isoformat())
if __name__ == "__main__":
analyze_freeze()