"""Gunicorn configuration for Squid Manager.

Usage:
    gunicorn -c gunicorn_config.py wsgi:app

All values can be overridden via environment variables:
    SQUIDMGR_HOST        bind address  (default: 0.0.0.0)
    SQUIDMGR_PORT        bind port     (default: 5200)
    SQUIDMGR_WORKERS     worker count  (default: 2)
    SQUIDMGR_TIMEOUT     worker timeout (default: 120)
"""
import multiprocessing
import os

_host = os.environ.get("SQUIDMGR_HOST", "0.0.0.0")
_port = os.environ.get("SQUIDMGR_PORT", "5200")
_workers = int(os.environ.get("SQUIDMGR_WORKERS", 2))
_timeout = int(os.environ.get("SQUIDMGR_TIMEOUT", 120))

bind = f"{_host}:{_port}"
workers = _workers
timeout = _timeout
worker_class = "sync"

# Logging
accesslog = "-"      # stdout → journald
errorlog = "-"       # stderr → journald
loglevel = "info"

# Preload app to share memory & fail fast on import errors
preload_app = True

# PID file (for health-check scripts)
pidfile = os.path.join(os.path.dirname(os.path.abspath(__file__)), "instance", "gunicorn.pid")