[Unit]
Description=Swictation Voice-to-Text Daemon
After=graphical-session.target
# Auto-start UI service when daemon starts
Wants=swictation-ui.service

[Service]
Type=simple
ExecStart=/usr/local/lib/node_modules/swictation/bin/swictation-daemon
Restart=on-failure
RestartSec=5

# Environment - CRITICAL for GPU acceleration and correct model operation
Environment="RUST_LOG=info"

# ORT_DYLIB_PATH: Points to ONNX Runtime library (CRITICAL - without this, model produces 100% blank tokens)
Environment="ORT_DYLIB_PATH=/usr/local/lib/node_modules/swictation/lib/native/libonnxruntime.so"

# LD_LIBRARY_PATH: CUDA runtime + ONNX Runtime CUDA providers (for GPU acceleration)
# Without this: 14x performance regression (43s vs 3-6s expected for 57s audio)
# Include cuda-12.9 for cuDNN libraries (libcudnn.so.9) required by ONNX Runtime
Environment="LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/local/cuda-12.9/lib64:/usr/local/lib/node_modules/swictation/lib/native"

# CUDA_HOME: Helps CUDA libraries find additional resources at runtime
Environment="CUDA_HOME=/usr/local/cuda"

# Import user environment for PulseAudio/PipeWire session (enables full audio device detection)
ImportEnvironment=

# Resource limits - Relaxed for optimal GPU performance
# 1.1B model needs ~3.5GB GPU VRAM + ~1-2GB system RAM + multi-core CPU for optimal performance
# Original limits (MemoryMax=500M, CPUQuota=50%) caused performance issues
# Uncomment and adjust for production if needed:
# MemoryMax=8G
# CPUQuota=200%

# Security hardening - Relaxed for USB audio device access
# Re-enable these in production if your audio devices don't require direct USB access:
# PrivateTmp=true
# ProtectSystem=strict
# ProtectHome=read-only
# ReadWritePaths=/tmp
# ReadWritePaths=%h/.local/share/swictation
# ReadWritePaths=%h/.cache/swictation
# ReadWritePaths=%h/.config/swictation

[Install]
WantedBy=default.target