"""Gunicorn configuration for SOCKS Manager.

Usage:
    gunicorn -c gunicorn_config.py run:app

All values can be overridden via environment variables:
    SM_HOST       bind address  (default: 0.0.0.0)
    SM_PORT       bind port     (default: 5000)
    SM_WORKERS    worker count  (default: 1 — keep 1 for SOCKS5 thread singleton)
    SM_TIMEOUT    worker timeout (default: 30)
"""
import multiprocessing
import os

_host = os.environ.get("SM_HOST", "0.0.0.0")
_port = os.environ.get("SM_PORT", "5000")
_workers = int(os.environ.get("SM_WORKERS", 1))
_timeout = int(os.environ.get("SM_TIMEOUT", 30))

bind = f"{_host}:{_port}"
workers = _workers
timeout = _timeout
graceful_timeout = 30
worker_class = "sync"

# Periodic worker recycling to prevent memory leaks
max_requests = 1000
max_requests_jitter = 100

# Request size limits
limit_request_line = 8190
limit_request_fields = 100
limit_request_field_size = 8190

# Logging → journald
accesslog = "-"
errorlog = "-"
loglevel = os.environ.get("SM_LOG_LEVEL", "INFO").lower()

# Preload app (faster fork, fails fast). Keep True when workers=1.
preload_app = True

# PID file
pidfile = os.path.join(os.path.dirname(os.path.abspath(__file__)), "gunicorn.pid")