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name = "windows_aarch64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
[[package]]
name = "windows_i686_gnu"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
[[package]]
name = "windows_i686_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
[[package]]
name = "windows_i686_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
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name = "windows_x86_64_gnu"
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
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name = "windows_x86_64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

8
Cargo.toml Normal file
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@@ -0,0 +1,8 @@
[package]
name = "garandos-tui"
version = "0.1.0"
edition = "2024"
[dependencies]
crossterm = "0.29.0"
ratatui = "0.29.0"

1
README.md Normal file
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# GarandOS TUI

12
default.nix Normal file
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@@ -0,0 +1,12 @@
{
lib,
rustPlatform,
pkg-config,
}:
rustPlatform.buildRustPackage {
name = "garandos-tui";
src = ./.;
# buildInputs = [ ];
nativeBuildInputs = [pkg-config];
cargoHash = lib.fakeHash;
}

90
flake.lock generated Normal file
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{
"nodes": {
"fenix": {
"inputs": {
"nixpkgs": [
"nixpkgs"
],
"rust-analyzer-src": "rust-analyzer-src"
},
"locked": {
"lastModified": 1762929886,
"narHash": "sha256-TQZ3Ugb1FoHpTSc8KLrzN4njIZU4FemAMHyS4M3mt6s=",
"owner": "nix-community",
"repo": "fenix",
"rev": "6998514dce2c365142a0a119a95ef95d89b84086",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "fenix",
"type": "github"
}
},
"naersk": {
"inputs": {
"fenix": [
"fenix"
],
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1752689277,
"narHash": "sha256-uldUBFkZe/E7qbvxa3mH1ItrWZyT6w1dBKJQF/3ZSsc=",
"owner": "nix-community",
"repo": "naersk",
"rev": "0e72363d0938b0208d6c646d10649164c43f4d64",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "naersk",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1762844143,
"narHash": "sha256-SlybxLZ1/e4T2lb1czEtWVzDCVSTvk9WLwGhmxFmBxI=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "9da7f1cf7f8a6e2a7cb3001b048546c92a8258b4",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"fenix": "fenix",
"naersk": "naersk",
"nixpkgs": "nixpkgs"
}
},
"rust-analyzer-src": {
"flake": false,
"locked": {
"lastModified": 1762860488,
"narHash": "sha256-rMfWMCOo/pPefM2We0iMBLi2kLBAnYoB9thi4qS7uk4=",
"owner": "rust-lang",
"repo": "rust-analyzer",
"rev": "2efc80078029894eec0699f62ec8d5c1a56af763",
"type": "github"
},
"original": {
"owner": "rust-lang",
"ref": "nightly",
"repo": "rust-analyzer",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

70
flake.nix Normal file
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{
description = "TUI for managing GarandsOS' hosts configuration";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
fenix = {
url = "github:nix-community/fenix";
inputs.nixpkgs.follows = "nixpkgs";
};
naersk = {
url = "github:nix-community/naersk";
inputs = {
nixpkgs.follows = "nixpkgs";
fenix.follows = "fenix";
};
};
};
outputs = {
self,
nixpkgs,
naersk,
fenix,
}: let
system = "x86_64-linux";
pkgs = nixpkgs.legacyPackages.${system};
rustToolchain = fenix.packages.${system}.stable.toolchain;
naerskLib = pkgs.callPackage naersk {
cargo = rustToolchain;
rustc = rustToolchain;
};
cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
packageVersion = cargoToml.package.version;
# ...
in {
packages.${system} = {
default =
pkgs.callPackage ./default.nix {};
develop = naerskLib.buildPackage {
name = "garandos-tui";
src = ./.;
# buildInputs = with pkgs; [];
nativeBuildInputs = with pkgs; [pkg-config];
};
};
devShells.${system}.default = pkgs.mkShell {
env.RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
buildInputs = [
rustToolchain
];
nativeBuildInputs = with pkgs; [pkg-config];
shellHook = ''
echo "garandos-tui v${packageVersion}"
echo ""
echo "Commands:"
echo " nix build - Build production version"
echo " nix run - Run production version"
echo " nix build .#develop - Build development version"
echo " nix run .#develop - Run development version"
'';
};
};
}

153
src/main.rs Normal file
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use crossterm::{
event,
event::{KeyCode, KeyEvent, KeyEventKind},
};
use ratatui::{
DefaultTerminal, Frame, Terminal,
prelude::{Buffer, Constraint, CrosstermBackend, Layout, Rect, Stylize},
style::{Color, Style},
symbols::border,
text::Line,
widgets::{Block, Gauge, Widget},
};
use std::{
io,
sync::mpsc::{self, Sender},
thread,
time::Duration,
};
fn main() -> io::Result<()> {
let mut terminal: Terminal<CrosstermBackend<io::Stdout>> = ratatui::init();
let mut app: App = App {
exit: false,
progress_bar_color: Color::Green,
background_progress: 0_f64,
};
let (event_tx, event_rx) = mpsc::channel::<Event>();
let tx_to_input_events: Sender<Event> = event_tx.clone();
thread::spawn(move || {
handle_input_events(tx_to_input_events);
});
let tx_to_background_events: Sender<Event> = event_tx.clone();
thread::spawn(move || {
run_background_thread(tx_to_background_events);
});
let app_result: Result<(), io::Error> = app.run(&mut terminal, event_rx);
ratatui::restore();
app_result
}
enum Event {
Input(KeyEvent),
Progress(f64),
}
fn handle_input_events(tx: mpsc::Sender<Event>) {
loop {
match event::read().unwrap() {
event::Event::Key(key_event) => tx.send(Event::Input(key_event)).unwrap(),
_ => {}
}
}
}
fn run_background_thread(tx: mpsc::Sender<Event>) {
let mut progress: f64 = 0_f64;
const INCREMENT: f64 = 0.01_f64;
loop {
thread::sleep(Duration::from_millis(100));
progress += INCREMENT;
progress = progress.min(1_f64);
tx.send(Event::Progress(progress)).unwrap();
}
}
pub struct App {
exit: bool,
progress_bar_color: Color,
background_progress: f64,
}
impl App {
fn run(&mut self, terminal: &mut DefaultTerminal, rx: mpsc::Receiver<Event>) -> io::Result<()> {
while !self.exit {
match rx.recv().unwrap() {
Event::Input(key_event) => self.handle_key_event(key_event)?,
Event::Progress(progress) => self.background_progress = progress,
}
terminal.draw(|frame: &mut Frame<'_>| self.draw(frame))?;
}
Ok(())
}
fn draw(&self, frame: &mut Frame<'_>) {
frame.render_widget(self, frame.area());
}
fn handle_key_event(&mut self, key_event: KeyEvent) -> io::Result<()> {
if key_event.kind == KeyEventKind::Press && key_event.code == KeyCode::Char('q') {
self.exit = true;
} else if key_event.kind == KeyEventKind::Press && key_event.code == KeyCode::Char('c') {
if self.progress_bar_color == Color::Green {
self.progress_bar_color = Color::Red;
} else {
self.progress_bar_color = Color::Green;
}
}
Ok(())
}
}
impl Widget for &App {
fn render(self, area: Rect, buf: &mut Buffer)
where
Self: Sized,
{
let vertical_layout: Layout =
Layout::vertical([Constraint::Percentage(20), Constraint::Percentage(80)]);
let [title_area, gauge_area] = vertical_layout.areas(area);
Line::from("Process overview")
.bold()
.render(title_area, buf);
let instructions: Line<'_> = Line::from(vec![
" Change color ".into(),
"<C>".blue().bold(),
" Quit ".into(),
"<Q>".blue().bold(),
])
.centered();
let block: Block<'_> = Block::bordered()
.title(Line::from(" Background processes "))
.title_bottom(instructions)
.border_set(border::THICK);
let progress_bar: Gauge<'_> = Gauge::default()
.gauge_style(Style::default().fg(self.progress_bar_color))
.block(block)
.label(format!(
"Process Bar: {:.2}%",
self.background_progress * 100_f64
))
.ratio(self.background_progress);
progress_bar.render(
Rect {
x: gauge_area.left(),
y: gauge_area.top(),
width: gauge_area.width,
height: 3,
},
buf,
);
}
}