feat: initialize Tauri application with Preact framework

- Added main application logic in `src-tauri/src/lib.rs` and `src-tauri/src/main.rs`.
- Configured Tauri settings in `tauri.conf.json`.
- Created basic styling in `src/App.css`.
- Implemented main application component in `src/App.tsx` with greeting functionality.
- Included Preact logo in `src/assets/preact.svg`.
- Set up rendering in `src/main.tsx`.
- Defined TypeScript environment in `vite-env.d.ts` and configured TypeScript settings in `tsconfig.json` and `tsconfig.node.json`.
- Configured Vite for Tauri development in `vite.config.ts`.
This commit is contained in:
Evandro Fonseca Junior committed 2026-01-09 17:25:23 -03:00
1 parent 98fde58d77
commit ce33464c6e
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# Auto detect text files and perform LF normalization
* text=auto
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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
pnpm-debug.log*
lerna-debug.log*
node_modules
dist
dist-ssr
*.local
# Editor directories and files
.vscode/*
!.vscode/extensions.json
.idea
.DS_Store
*.suo
*.ntvs*
*.njsproj
*.sln
*.sw?
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{
"recommendations": ["tauri-apps.tauri-vscode", "rust-lang.rust-analyzer"]
}
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MIT License
Copyright (c) 2026 Evandro Fonseca Junior
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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# localaiapp
O **localaiapp** é um orquestrador de inteligência artificial local de alta performance, construído sobre a stack **Tauri (Rust)** para o core, **Preact** para a interface de usuário de baixo footprint, e **Python (Llama)** como motor de inferência via Sidecar.
---
## 1. Abordagem de Princípios Primeiros (Arquitetura)
A escolha do modelo **Sidecar** em detrimento de um servidor local (HTTP) baseia-se na **eficiência de IPC (Inter-Process Communication)** e **gestão de ciclo de vida**:
- **Isolamento de Processo:** O motor de IA (Python) roda como um processo filho binário. Se a inferência travar, o core em Rust pode reiniciá-lo sem derrubar a UI.
- **Segurança de Memória:** O Rust atua como um "vigia", garantindo que os recursos de GPU/RAM consumidos pelo Llama sejam liberados imediatamente após o encerramento do app.
- **Distribuição:** Ao compilar o Python com Nuitka ou PyInstaller, eliminamos a necessidade de o usuário final ter o Python instalado no sistema.
---
## 2. Setup do Ambiente de Desenvolvimento
### Pré-requisitos de Engenharia
| Componente | Windows (PowerShell) | Manjaro Linux (Pacman/Pamac) |
| ------------------- | ------------------------------ | ------------------------------- |
| **Rust** | `rustup` (MSVC toolchain) | `rustup` ou `pacman -S rust` |
| **Node.js** | `winget install OpenJS.NodeJS` | `sudo pacman -S nodejs npm` |
| **C++ Build Tools** | Visual Studio Build Tools 2022 | `sudo pacman -S base-devel` |
| **Webview Engine** | WebView2 (Nativo) | `sudo pacman -S webkit2gtk-4.1` |
| **Python Tooling** | `python -m pip install nuitka` | `sudo pacman -S python-pip` |
### Instalação e Inicialização
1. **Clone o repositório:**
```bash
git clone https://github.com/seu-usuario/localaiapp.git
cd localaiapp
```
2. **Instale as dependências do Frontend:**
```bash
npm install
```
3. **Preparação do Sidecar (Python):**
> **Nota Crítica:** O Tauri exige que o binário sidecar siga a nomenclatura `[nome]-[target-triple]`.
```bash
# Exemplo de comando para gerar o binário (dentro da pasta /src-python)
python -m Nuitka --standalone --onefile main.py
```
---
## 3. Estrutura do Projeto
```plaintext
localaiapp/
├── src/ # Frontend (Preact + Typescript)
│ ├── components/ # Componentes atômicos
│ └── main.tsx # Entry point do Preact
├── src-tauri/ # Core do Sistema (Rust)
│ ├── bin/ # Binários Sidecar (Python compilado)
│ ├── src/ # Lógica de ponte Rust-UI
│ └── tauri.conf.json # Configuração de permissões e sidecars
├── src-python/ # Motor de IA (Llama-cpp-python)
│ ├── main.py # Script principal de inferência
│ └── requirements.txt
└── public/ # Assets estáticos
```
---
## 4. Fluxo de Execução (Engenharia de Dados)
1. **Frontend (Preact):** Dispara um evento `invoke('start_inference', { prompt: '...' })`.
2. **Bridge (Rust):** O Tauri recebe o comando, valida os parâmetros e comunica-se via `stdin` ou `localhost socket` com o processo Sidecar.
3. **Sidecar (Python):** O Llama processa os tensores, gera o stream de tokens e devolve ao Rust.
4. **Update (UI):** O Preact utiliza **Signals** para atualizar a interface em tempo real com o mínimo de re-renders.
---
## 5. Roadmap de Desenvolvimento
- [x] Setup Inicial (Tauri + Preact + TS)
- [ ] Implementação do Sidecar Llama (C++ Bindings)
- [ ] Suporte a Aceleração de Hardware (CUDA/Vulkan)
- [ ] **Futuro:** Módulo de Web Search (Integração de busca via Python e extração de contexto).
---
## 6. Verificação de Lacunas (Common Pitfalls)
- **PATH no Windows:** Certifique-se de que o compilador C++ está no PATH, ou o Tauri não conseguirá compilar os bindings do Rust.
- **Permissões no Linux:** No Manjaro, o WebKitGTK pode exigir permissões específicas de sandbox dependendo da versão do Kernel.
- **Sidecar Naming:** O erro mais comum é não incluir o _target triple_ (ex: `x86_64-unknown-linux-gnu`) no nome do binário dentro de `src-tauri/bin`.
---
**Como você é um engenheiro e estamos no início, gostaria que eu criasse o script inicial em Python para o Sidecar já com as tipagens básicas ou prefere focar na configuração do `tauri.conf.json` para reconhecer o binário?**
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" type="image/svg+xml" href="/vite.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Tauri + Preact + Typescript</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.tsx"></script>
</body>
</html>
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{
"name": "localaiapp",
"private": true,
"version": "0.1.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "tsc && vite build",
"preview": "vite preview",
"tauri": "tauri"
},
"dependencies": {
"preact": "^10.25.1",
"@tauri-apps/api": "^2",
"@tauri-apps/plugin-opener": "^2"
},
"devDependencies": {
"@preact/preset-vite": "^2.9.3",
"typescript": "~5.6.2",
"vite": "^6.0.3",
"@tauri-apps/cli": "^2"
}
}
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# Generated by Cargo
# will have compiled files and executables
/target/
# Generated by Tauri
# will have schema files for capabilities auto-completion
/gen/schemas
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[package]
name = "localaiapp"
version = "0.1.0"
description = "A Tauri App"
authors = ["you"]
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[lib]
# The `_lib` suffix may seem redundant but it is necessary
# to make the lib name unique and wouldn't conflict with the bin name.
# This seems to be only an issue on Windows, see https://github.com/rust-lang/cargo/issues/8519
name = "localaiapp_lib"
crate-type = ["staticlib", "cdylib", "rlib"]
[build-dependencies]
tauri-build = { version = "2", features = [] }
[dependencies]
tauri = { version = "2", features = [] }
tauri-plugin-opener = "2"
serde = { version = "1", features = ["derive"] }
serde_json = "1"
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fn main() {
tauri_build::build()
}
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{
"$schema": "../gen/schemas/desktop-schema.json",
"identifier": "default",
"description": "Capability for the main window",
"windows": ["main"],
"permissions": [
"core:default",
"opener:default"
]
}
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// Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
#[tauri::command]
fn greet(name: &str) -> String {
format!("Hello, {}! You've been greeted from Rust!", name)
}
#[cfg_attr(mobile, tauri::mobile_entry_point)]
pub fn run() {
tauri::Builder::default()
.plugin(tauri_plugin_opener::init())
.invoke_handler(tauri::generate_handler![greet])
.run(tauri::generate_context!())
.expect("error while running tauri application");
}
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// Prevents additional console window on Windows in release, DO NOT REMOVE!!
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
fn main() {
localaiapp_lib::run()
}
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{
"$schema": "https://schema.tauri.app/config/2",
"productName": "localaiapp",
"version": "0.1.0",
"identifier": "evandrodevbr",
"build": {
"beforeDevCommand": "pnpm dev",
"devUrl": "http://localhost:1420",
"beforeBuildCommand": "pnpm build",
"frontendDist": "../dist"
},
"app": {
"windows": [
{
"title": "localaiapp",
"width": 800,
"height": 600
}
],
"security": {
"csp": null
}
},
"bundle": {
"active": true,
"targets": "all",
"icon": [
"icons/32x32.png",
"icons/128x128.png",
"icons/[email protected]",
"icons/icon.icns",
"icons/icon.ico"
]
}
}
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.logo.vite:hover {
filter: drop-shadow(0 0 2em #747bff);
}
.logo.preact:hover {
filter: drop-shadow(0 0 2em #673ab8);
}
:root {
font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
font-size: 16px;
line-height: 24px;
font-weight: 400;
color: #0f0f0f;
background-color: #f6f6f6;
font-synthesis: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-text-size-adjust: 100%;
}
.container {
margin: 0;
padding-top: 10vh;
display: flex;
flex-direction: column;
justify-content: center;
text-align: center;
}
.logo {
height: 6em;
padding: 1.5em;
will-change: filter;
transition: 0.75s;
}
.logo.tauri:hover {
filter: drop-shadow(0 0 2em #24c8db);
}
.row {
display: flex;
justify-content: center;
}
a {
font-weight: 500;
color: #646cff;
text-decoration: inherit;
}
a:hover {
color: #535bf2;
}
h1 {
text-align: center;
}
input,
button {
border-radius: 8px;
border: 1px solid transparent;
padding: 0.6em 1.2em;
font-size: 1em;
font-weight: 500;
font-family: inherit;
color: #0f0f0f;
background-color: #ffffff;
transition: border-color 0.25s;
box-shadow: 0 2px 2px rgba(0, 0, 0, 0.2);
}
button {
cursor: pointer;
}
button:hover {
border-color: #396cd8;
}
button:active {
border-color: #396cd8;
background-color: #e8e8e8;
}
input,
button {
outline: none;
}
#greet-input {
margin-right: 5px;
}
@media (prefers-color-scheme: dark) {
:root {
color: #f6f6f6;
background-color: #2f2f2f;
}
a:hover {
color: #24c8db;
}
input,
button {
color: #ffffff;
background-color: #0f0f0f98;
}
button:active {
background-color: #0f0f0f69;
}
}
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import { useState } from "preact/hooks";
import preactLogo from "./assets/preact.svg";
import { invoke } from "@tauri-apps/api/core";
import "./App.css";
function App() {
const [greetMsg, setGreetMsg] = useState("");
const [name, setName] = useState("");
async function greet() {
// Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
setGreetMsg(await invoke("greet", { name }));
}
return (
<main class="container">
<h1>Welcome to Tauri + Preact</h1>
<div class="row">
<a href="https://vite.dev" target="_blank">
<img src="/vite.svg" class="logo vite" alt="Vite logo" />
</a>
<a href="https://tauri.app" target="_blank">
<img src="/tauri.svg" class="logo tauri" alt="Tauri logo" />
</a>
<a href="https://preactjs.com" target="_blank">
<img src={preactLogo} class="logo preact" alt="Preact logo" />
</a>
</div>
<p>Click on the Tauri, Vite, and Preact logos to learn more.</p>
<form
class="row"
onSubmit={(e) => {
e.preventDefault();
greet();
}}
>
<input
id="greet-input"
onInput={(e) => setName(e.currentTarget.value)}
placeholder="Enter a name..."
/>
<button type="submit">Greet</button>
</form>
<p>{greetMsg}</p>
</main>
);
}
export default App;
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="27.68" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 296"><path fill="#673AB8" d="m128 0l128 73.9v147.8l-128 73.9L0 221.7V73.9z"/><path fill="#FFF" d="M34.865 220.478c17.016 21.78 71.095 5.185 122.15-34.704c51.055-39.888 80.24-88.345 63.224-110.126c-17.017-21.78-71.095-5.184-122.15 34.704c-51.055 39.89-80.24 88.346-63.224 110.126Zm7.27-5.68c-5.644-7.222-3.178-21.402 7.573-39.253c11.322-18.797 30.541-39.548 54.06-57.923c23.52-18.375 48.303-32.004 69.281-38.442c19.922-6.113 34.277-5.075 39.92 2.148c5.644 7.223 3.178 21.403-7.573 39.254c-11.322 18.797-30.541 39.547-54.06 57.923c-23.52 18.375-48.304 32.004-69.281 38.441c-19.922 6.114-34.277 5.076-39.92-2.147Z"/><path fill="#FFF" d="M220.239 220.478c17.017-21.78-12.169-70.237-63.224-110.126C105.96 70.464 51.88 53.868 34.865 75.648c-17.017 21.78 12.169 70.238 63.224 110.126c51.055 39.889 105.133 56.485 122.15 34.704Zm-7.27-5.68c-5.643 7.224-19.998 8.262-39.92 2.148c-20.978-6.437-45.761-20.066-69.28-38.441c-23.52-18.376-42.74-39.126-54.06-57.923c-10.752-17.851-13.218-32.03-7.575-39.254c5.644-7.223 19.999-8.261 39.92-2.148c20.978 6.438 45.762 20.067 69.281 38.442c23.52 18.375 42.739 39.126 54.06 57.923c10.752 17.85 13.218 32.03 7.574 39.254Z"/><path fill="#FFF" d="M127.552 167.667c10.827 0 19.603-8.777 19.603-19.604c0-10.826-8.776-19.603-19.603-19.603c-10.827 0-19.604 8.777-19.604 19.603c0 10.827 8.777 19.604 19.604 19.604Z"/></svg>

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import { render } from "preact";
import App from "./App";
render(<App />, document.getElementById("root")!);
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/// <reference types="vite/client" />
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{
"compilerOptions": {
"target": "ES2020",
"useDefineForClassFields": true,
"module": "ESNext",
"lib": ["ES2020", "DOM", "DOM.Iterable"],
"skipLibCheck": true,
/* Bundler mode */
"moduleResolution": "bundler",
"allowImportingTsExtensions": true,
"resolveJsonModule": true,
"isolatedModules": true,
"noEmit": true,
"jsx": "react-jsx",
"jsxImportSource": "preact",
/* Linting */
"strict": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
"noFallthroughCasesInSwitch": true
},
"include": ["src"],
"references": [{ "path": "./tsconfig.node.json" }]
}
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{
"compilerOptions": {
"composite": true,
"skipLibCheck": true,
"module": "ESNext",
"moduleResolution": "bundler",
"allowSyntheticDefaultImports": true
},
"include": ["vite.config.ts"]
}
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import { defineConfig } from "vite";
import preact from "@preact/preset-vite";
// @ts-expect-error process is a nodejs global
const host = process.env.TAURI_DEV_HOST;
// https://vite.dev/config/
export default defineConfig(async () => ({
plugins: [preact()],
// Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
//
// 1. prevent Vite from obscuring rust errors
clearScreen: false,
// 2. tauri expects a fixed port, fail if that port is not available
server: {
port: 1420,
strictPort: true,
host: host || false,
hmr: host
? {
protocol: "ws",
host,
port: 1421,
}
: undefined,
watch: {
// 3. tell Vite to ignore watching `src-tauri`
ignored: ["**/src-tauri/**"],
},
},
}));