# Toak Project Structure

This document outlines the high-level architecture and directory structure of the Toak project to help contributors navigate the codebase.

## Overview

Toak is designed as a fast, Linux-native dictation application utilizing C# AOT (Ahead-Of-Time compilation) for minimal latency. It operates primarily as a client-daemon architecture where background application state is managed by a daemon process while short-lived CLI commands issue control messages via Unix domain sockets.

## Directory Structure

```text
Toak/
├── Api/
│   ├── GroqApiClient.cs     # Client for external transcription and LLM API calls (Groq/Whisper)
│   └── Models/              # API payload representations
├── Assets/                  # Sound files or other static resources
├── Audio/
│   └── AudioRecorder.cs     # Handles audio capture via system utilities (e.g., ffmpeg/arecord)
├── Commands/
│   ├── ToggleCommand.cs     # Start/stop recording and pass pipe/copy flags
│   ├── DiscardCommand.cs    # Abort the current recording
│   ├── OnboardCommand.cs    # Initial interactive configuration setup
│   ├── ConfigUpdaterCommand.cs # Direct configuration modifications
│   ├── ShowCommand.cs       # Display current configuration
│   └── LatencyTestCommand.cs # Benchmark tool for API calls
├── Configuration/
│   ├── ConfigManager.cs     # Loads and saves JSON configuration from the user's home folder
│   └── ToakConfig.cs        # Data model for user preferences
├── Core/
│   ├── DaemonService.cs     # The background daemon maintaining the socket server and handling states
│   ├── Logger.cs            # Logging utility (verbose logging)
│   ├── PromptBuilder.cs     # Constructs the system prompts for the LLM based on user settings
│   ├── StateTracker.cs      # Tracks the current application state (e.g. is recording active?)
│   └── Skills/              # Modular capabilities (e.g., Terminal mode, Language Translation)
├── IO/
│   ├── ClipboardManager.cs  # Cross-session (Wayland/X11) clipboard manipulation (`wl-copy`, `xclip`)
│   ├── TextInjector.cs      # Native keyboard injection handling (`wtype`, `xdotool`)
│   └── Notifications.cs     # System notifications (`notify-send`) and sound playback (`paplay`)
├── Serialization/
│   └── AppJsonSerializerContext.cs # System.Text.Json source generation context for AOT support
├── docs/                    # Documentation
├── toak.service             # systemd user service file to run the daemon automatically
└── Program.cs               # Application entry point using System.CommandLine
```

## Key Architectural Concepts

### The Daemon Process
The `DaemonService` (`toak daemon`) is the heart of Toak. It listens on a Unix domain socket for IPC messages. This allows `toak toggle` to execute almost instantaneously, delegating all heavy lifting and state management to an already-hot background process.

### Unix Sockets IPC
Client commands communicate with the daemon via Unix sockets. For details on the byte payloads used for communication, please refer to [PROTOCOL.md](./PROTOCOL.md).

### AOT Compilation
The project relies on Native AOT compilation (`dotnet publish -c Release -r linux-x64 --aot`) to avoid JIT-startup time on CLI executions, making `toak toggle` fast enough to bind seamlessly to hotkeys.