[Unit]
Description=TNT Terminal Chat Server (Anonymous)
Documentation=https://github.com/m1ngsama/TNT
After=network.target

[Service]
Type=simple
User=tnt
Group=tnt
WorkingDirectory=/var/lib/tnt
ExecStart=/usr/local/bin/tnt

# Automatic restart on failure for long-term stability
Restart=always
RestartSec=10

# Limit restart rate to prevent thrashing
StartLimitInterval=300
StartLimitBurst=5

# Security hardening
NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ProtectHome=true
ReadWritePaths=/var/lib/tnt

# Resource limits for stability
LimitNOFILE=65536
LimitNPROC=512

# Logging
StandardOutput=journal
StandardError=journal
SyslogIdentifier=tnt

# Graceful shutdown
TimeoutStopSec=30

# Environment (can be customized via systemctl edit)
Environment="PORT=2222"

[Install]
WantedBy=multi-user.target