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Add configurable timezone support with environment variables

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serversdwn
2026-01-12 16:31:33 +00:00
parent 6b363b0788
commit 2cb96a7a1c
3 changed files with 207 additions and 5 deletions
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30
app/services.py
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@@ -9,8 +9,9 @@ import asyncio
import contextlib
import logging
import time
import os
from dataclasses import dataclass
from datetime import datetime
from datetime import datetime, timezone, timedelta
from typing import Optional, List
from sqlalchemy.orm import Session
from ftplib import FTP
@@ -20,6 +21,16 @@ from app.models import NL43Status
logger = logging.getLogger(__name__)
# Configurable timezone offset
# Set via environment variable TIMEZONE_OFFSET (hours from UTC)
# Default: -5 (EST - Eastern Standard Time, UTC-5)
# Examples: -5 for EST, -4 for EDT, 0 for UTC, +1 for CET
TIMEZONE_OFFSET_HOURS = float(os.getenv("TIMEZONE_OFFSET", "-5"))
TIMEZONE_OFFSET = timedelta(hours=TIMEZONE_OFFSET_HOURS)
TIMEZONE_NAME = os.getenv("TIMEZONE_NAME", f"UTC{TIMEZONE_OFFSET_HOURS:+.0f}")
logger.info(f"Using timezone: {TIMEZONE_NAME} (UTC{TIMEZONE_OFFSET_HOURS:+.0f})")
@dataclass
class NL43Snapshot:
@@ -744,21 +755,30 @@ class NL43Client:
modified_timestamp = None
try:
from datetime import datetime
# Get current time in configured timezone for year comparison
now_local = datetime.utcnow() + TIMEZONE_OFFSET
# Try parsing with time (recent files: "Jan 07 14:23")
try:
dt = datetime.strptime(modified_str, "%b %d %H:%M")
# Add current year since it's not in the format
dt = dt.replace(year=datetime.now().year)
# Assume FTP timestamp is in the configured timezone
dt = dt.replace(year=now_local.year)
# If the resulting date is in the future, it's actually from last year
if dt > datetime.now():
if dt > now_local:
dt = dt.replace(year=dt.year - 1)
modified_timestamp = dt.isoformat()
# Convert local timezone to UTC
dt_utc = dt - TIMEZONE_OFFSET
modified_timestamp = dt_utc.isoformat()
except ValueError:
# Try parsing with year (older files: "Dec 25 2025")
dt = datetime.strptime(modified_str, "%b %d %Y")
modified_timestamp = dt.isoformat()
# Convert local timezone to UTC
dt_utc = dt - TIMEZONE_OFFSET
modified_timestamp = dt_utc.isoformat()
except Exception as e:
logger.warning(f"Failed to parse timestamp '{modified_str}': {e}")