[Unit]
Description=Ralpha UE5 Asset Server
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=ralpha
Group=ralpha
Environment="DISPLAY=:99"
Environment="RALPHA_UE5_DIR=/opt/ralpha-ue5"
Environment="UE5_DIR=/opt/UnrealEngine"

# Sync assets before starting
ExecStartPre=/opt/ralpha-ue5/scripts/droplet-sync.sh

# Start virtual framebuffer
ExecStartPre=/usr/bin/Xvfb :99 -screen 0 1920x1080x24 &

# Launch UE5 with ralpha-ue5 project (headless, MCP server enabled)
ExecStart=/opt/UnrealEngine/Engine/Binaries/Linux/UnrealEditor \
    /opt/ralpha-ue5/Ralpha.uproject \
    -RenderOffscreen \
    -NoSound \
    -NullRHI=0 \
    -Vulkan \
    -log \
    -unattended

Restart=on-failure
RestartSec=10

# Logging
StandardOutput=append:/var/log/ralpha/ue5.log
StandardError=append:/var/log/ralpha/ue5-error.log

[Install]
WantedBy=multi-user.target