# TSParams

A simple Python utility to reconstruct the `tailscale up` command arguments based on the current system preferences. It reads the output of `tailscale debug prefs` and generates the corresponding command string, handling specific logic for routes, DNS settings, and exit nodes.

## Features

The script currently parses and handles the following Tailscale parameters:

| CLI Value | Default |
| --- | --- |
| `--accept-routes` | `false` |
| `--accept-dns=false` | `true` |
| `--advertise-routes` | `[]` |
| `--advertise-exit-node` | `false` |

## Installation

### Arch Linux (AUR)
The package is available in the Arch User Repository.<br>
https://aur.archlinux.org/packages/tsparams<br>
You can install it using your preferred AUR helper, for example:
```bash
yay -S tsparams
```
More installation methods to come.

### Manual Installation
Since this is a Python script, it does not require compilation.

1. Download the script `tsparams.py`.
2. Rename it to `tsparams` (optional, but recommended for command usage).
3. Make it executable: `chmod +x tsparams`
4. Place it in a directory included in your `$PATH` variable.

System-wide installation:
```bash
sudo cp tsparams /usr/bin/tsparams
```
Local installation (recommended for non-root users):
```bash
mkdir -p ~/.local/bin
cp tsparams ~/.local/bin/tsparams
```

Ensure `~/.local/bin` is in your PATH.

## Building

This project is a pure Python script. No building or compilation steps are required. Simply ensure the file has execute permissions and is placed in a directory accessible by your shell. Refer to the [Installation](#installation) section for details.

## Usage

Run the command directly. It will execute `tailscale debug prefs` internally, parse the JSON output, and print the reconstructed command string to stdout.
```bash
tsparams
```
Example Output:

If your current Tailscale preferences have `CorpDNS` set to false and are advertising the route `192.168.1.0/24`, the output will look like this:
```bash
tailscale up --accept-dns=false --advertise-routes=192.168.1.0/24
```
If you are advertising an exit node (`0.0.0.0/0`) and a specific route:
```bash
tailscale up --advertise-exit-node --advertise-routes=192.168.1.0/24
```