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react-js-electron-database

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Create a simple React Project + Electron App + Database connection. You will learn how many ways to create a simple app using React, Electron and Database.

react-js-electron-database 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# React-js + Electron + Database
#### Clone this project
```bash
git clone https://github.com/natancabral/react-js-electron-database.git react-js-electron-database
cd react-js-electron-database
npm install
npm audit fix
npm run start
```
#### Make yourself
* Create project
  * Begin with: [React](#begin-with-react)
  * Begin with: [Electron](#begin-with-electron)
* Run React
  * Working with: [Babel](#working-with-babel) | read: [css-error](#css-error)
  * Working with: [Concurrently + Wait-on](#working-with-wait-on-and-concurrently) (need nodejs installed to run)
* Database
  * [MySql](#mysql)
  * Sqlite3 (todo)
* [AppTray Window](#apptray-window)
  * Tray + NativeImage (todo)
* Packaging App
  * [Electron Builder](#electron-builder)
  * [Electron Packager](#electron-packager)
* Update (npm audit fix, npm update)
* [Kill Process](#kill-process-port3000)
* [Test](#test)
* [Error](#error)

----
# Create Project
## Begin with: React

First option begin with React
#### Create project and install React
```bash
# you need node.js
$ npx create-react-app react-js-electron-sqlite
$ cd react-js-electron-sqlite
```
#### Install Electron
```bash
# need sudo
$ npm install electron --save-dev
```
#### Update package.json file
* en: Open **package.json** file add insert above "scripts"
> "main": "main.js",
* en: Insert inside "scripts"
> "electron": "electron .",

#### Create main.js file
* en: Copy this script: 
```js
const { app, BrowserWindow } = require('electron')
const path = require('path')
//const url = require('url')

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      //webSecurity: false,
      //allowRunningInsecureContent: true,
      //preload: path.join(__dirname, 'preload.js')
      nodeIntegration: true
    }
  })

win.loadFile('src/index.html')
  //win.loadURL('http://127.0.0.1:3000')
  //win.webContents.openDevTools()
}

app.whenReady().then(createWindow)

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow()
  }
})
```

#### /src/index.html file
 I will create a **src/** folder and **index.html** file:
```html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="./index.css">
    <title>React-js + Electron + Sqlite3</title>
  </head>
  <body>
    <h1>React-js + Electron + Sqlite3</h1>
    
    <div id="app"></div>
    <div id="root"></div>
    <script src="./index.js"></script>
  </body>
</html>
```
####  Install react react-dom
```bash
# need sudo
$ npm install react react-dom
```
#### Done!
```bash
$ npm run electron
```
## Begin with: Electron
Second option begin with Electron
#### Clone electron-quick-start project
```bash
# you need node.js
$ git clone https://github.com/electron/electron-quick-start react-js-electron-sqlite
$ cd react-js-electron-sqlite
$ npm install
$ npm start
```
#### Install react react-dom
```bash
$ npm install react react-dom
```
#### Files
* I will create a **src/** folder 
* and move to inside **index.html** and **renderer.js**, 
* renamed as **renderer.js** to **index.js**.
* I will create an **index.css** and link it to the html. Finally, add an **app** container div.
* Replace **index.html** file:
```html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="./index.css">
    <title>React-js + Electron + Sqlite3</title>
  </head>
  <body>
    <h1>React-js + Electron + Sqlite3</h1>
    
    <div id="app"></div>
    <div id="root"></div>
    <script src="./index.js"></script>
  </body>
</html>
```
#### Change main.js file
With a small change to **main.js** so that it points to the correct file:
```js
.loadFile(path.join(__dirname, 'src', 'index.html'))
```
and **preload.js** to **index.js**
```js
webPreferences: {
  preload: path.join(__dirname, 'src', 'index.js')
}
```
#### index.js
```js
import React from 'react';
import ReactDOM from 'react-dom';
//import App from './App.js'; // <-- App / begin React
import App from './app.js'; // <-- app / begin Electron

window.onload = () => {
    ReactDOM.render(<App />, document.getElementById('app'));
};
```
----
# Run React

## Working with: Babel
Transpiling ES6 with Babel 7. 
#### Install Babel + Preset
```bash
$ npm i @babel/core --save-dev # this will install babel 7.0 
$ npm i @babel/preset-env @babel/preset-react --save-dev
$ npm i @babel/plugin-proposal-class-properties
```
#### Create .babelrc file
When it runs, it looks for its configuration in a file named .babelrc, so create in on the root and add:
```json
{ 
  "presets": ["@babel/preset-env", "@babel/preset-react"],
  "plugins": ["@babel/plugin-proposal-class-properties"]
}
```
#### Install Gulp
Babel needs to run before any code executes and the best way schedule that is through a build tool
```bash
$ npm i gulp gulp-babel --save-dev # basic gulp
$ npm i gulp-concat gulp-clean-css --save-dev # plugins
$ npm i gulp-livereload
# need root/admin
$ npm i -g gulp-cli # best sudo
```
#### Create gulpfile.js file
Create a gulpfile.js at the root of your project and add the tasks
```js
const exec = require('child_process').exec;
const gulp = require('gulp');
const babel = require('gulp-babel');
const css = require('gulp-clean-css');
const livereload = require('gulp-livereload');
//1. Compile HTML file and move them to the app folder
gulp.task('html', () => {
    return gulp.src('src/index.html')
        .pipe(gulp.dest('app/'))
        .pipe(livereload());
});

//2. Compile CSS file and move them to the app folder
gulp.task('css', () => {
    return gulp.src('src/**/*.css')
        .pipe(css())
        .pipe(gulp.dest('app/'))
        .pipe(livereload());
});

//3. Compile JS and JSX files and move them to the app folder
gulp.task('js*', () => {
    return gulp.src(['main*.js', 'src/**/*.js*'])
         .pipe(babel())
         .pipe(gulp.dest('app/'))
         .pipe(livereload());
});

//4. Compile IMAGES file and move them to the app folder
// ------------------------------------------------------------------------------------ All images inside ./assets/
gulp.task('images', () => {
    return gulp.src('src/assets/**/*')
         .pipe(gulp.dest('app/assets'))
         .pipe(livereload());
})

//5. Watch files
gulp.task('watch', async function() {
  livereload.listen();
  gulp.watch('src/**/*.html', gulp.series('html'));
  gulp.watch('src/**/*.css', gulp.series('css'));
  gulp.watch('src/**/*.js*', gulp.series('js*'));
  gulp.watch('src/assets/**/*', gulp.series('images'));
});

//6. Send to app folder
gulp.task('build', gulp.series('html', 'css', 'js*', 'images'));

//7. Start the electron process.
gulp.task('start', gulp.series('build', () => {
    return exec(
        __dirname+'/node_modules/.bin/electron .'
    ).on('close', () => process.exit());
}));

//0. Default process.
gulp.task('default', gulp.parallel('start', 'watch'));

```
#### Edit package.json file
Insert/change this:
```json
"main": "app/main.js",
```
And this:
```json
"scripts": {
    "electron": "electron .",
    "dev": "react-scripts start",
    "start": "gulp",
    "delete:all": "rm -r ./app",
    "postinstall": "install-app-deps",
    "build": "gulp build",
    "test": "gulp test",
    "release": "gulp release"
}
```
#### Edit main.js file
Insert/change this:
```js
// find .loadFile( 
// change to
.loadFile(path.join(__dirname, 'app', 'index.html'))
// or 
.loadFile('app/index.html')
```

#### CSS error
Babel cant import css files in js or jsx.
> **import './style.css'** show error

You need load css files inside react-context or index.html file.

#### Run
```bash
$ npm run-script start 
# or 
$ npm run start 
```

----
## Working with: Wait-on and Concurrently

#### Install Wait-on
* en: [Wait-on](https://www.npmjs.com/package/wait-on) is a cross-platform command line utility which will wait for files, ports, sockets, and http(s) resources to become available (or not available using reverse mode). Functionality is also available via a Node.js API. Cross-platform - runs everywhere Node.js runs (linux, unix, mac OS X, windows)
```node
$ npm install wait-on
```
#### Install Concurrently
* en: Run multiple commands [concurrently](https://www.npmjs.com/package/concurrently)
```bash
$ npm install concurrently
```
#### Run Wait-on + Concurrently
* en: Insert inside "scripts" 
```json
"electron-react": "concurrently \"BROWSER=none npm start\" \"wait-on http://localhost:3000 && electron .\"",
```
----
#### main.js
* en: Remember change this: (file)
> .loadFile('index.html')
* en: To this: (url)
> .loadURL('http://127.0.0.1:3000')

#### Run app
```bash
$ npm run-script electron-react
```
#### Done!
Welcome React-Electron project!

----
# Database

## MySql

Install package mysql
```bash
$ npm install mysql
```

Import package mysql on component file:
```js
import mysql from 'mysql';
```

inside same component file:
```js

// set connection variable
  const [conn,setConn] = React.useState(undefined);

// function connection mysql remote
  const connection = () => {
    let c = mysql.createConnection({    
      //host     : '888.88.88.88', //:3306
      host     : 'localhost',
      user     : 'root',
      password : '',
      database : 'databasename'
    });
    c.connect((err) => {
      // in case of error
      if(err){
          alert( err.code );
          return console.log(err.code, err.fatal, err.stack);
      }
      return console.log('Connection successfully established');
    });
    setConn(c);
  }

// function query/search
  const query = () => {
    let sql = 'SELECT `name`,`id` FROM `tablename` where id > 0  limit 0,50 ';
    conn.query(sql, function (err, results, fields) {
      if (err) {
        alert(err.code);
        console.log(err.code);
      }
      else {
        alert(results);
        console.log(results);
        if(results.length)
           alert(results[0].id + results[0].name);
      }
     });
     
     // Close the connection
     conn.end(function(){
        // The connection has been closed
        console.log('Connection successfully closed');
     });
  }
```

Insert call buttons HTML/React/JSX:
```html
  <button onClick={()=>connection()}>Connection</button>
  <button onClick={()=>query()}>Query</button>
```

## Sqlite3

<!--
simple
https://stackoverflow.com/questions/32504307/how-to-use-sqlite3-module-with-electron
# Then add one of the following (adding a --save) flag:

git clone https://github.com/electron/electron-quick-start electron-sqlite3b
cd electron-sqlite3b
npm install

Sequence
$ npm install knex --save
$ npm install sqlite3 --save
$ npm install node-pre-gyp
$ npm install electron-rebuild --save-dev
$ npm install electron-build --save-dev
$ npm install electron-builder --save-dev
$ npm audit fix

package.json
"scripts": {
  ...
    "postinstall": "install-app-deps",
    "postinstall:e": "electron-builder install-app-deps",
    "rebuild": "electron-rebuild -f -w sqlite3"
}

$ npm run postinstall
$ npm run rebuild
$ npm run install
$ npm audit fix
// If Show Ubuntu/Mac Error :START --------------------------------------------------------------------------
// If Show Ubuntu/Mac Error :START --------------------------------------------------------------------------
//----- experimental
$ sudo npm install electron-rebuild node-gyp --overwrite --force
//----- experimental
//----- experimental
$ npm i node-gyp@latest
$ sudo npm i -g node-gyp@latest && npm config set node_gyp "/usr/local/lib/node_modules/node-gyp/bin/node-gyp.js"
//----- experimental
//----- fix error
$ sudo node-gyp rebuild -g
$ sudo npm install nw-gyp -gudo npm install sqlite3 --build-from-source --runtime=node-webkit --target_arch=ia32 --allow-root --unsafe-perm=true
$ sudo npm i web-kit -g --allow-root --unsafe-perm=true
$ npm run rebuild
$ npm i prebuild-install || npm run build-release
//----- fix error
// If Show Ubuntu/Mac Error :END --------------------------------------------------------------------------
// If Show Ubuntu/Mac Error :END --------------------------------------------------------------------------
$ npm run postinstall

Copy databse sample:
Copy code:

$ npm install sqlite3 --save
$ npm audit fix # fix vulnerabilities

// Ubuntu Error --------------------------------------------------------------------------
// Ubuntu Error --------------------------------------------------------------------------
An unhandled error occurred inside electron-rebuildnode-gyp failed to rebuild
Solution 2:
sudo npm install -g node-gyp --overwrite --force
npm config set python /usr/bin/python2.7 
npm install
-->

----
# AppTray Window

## Tray + NativeImage
* en: I will create a **main-tray.js** file:
```js
const {app, BrowserWindow, Tray, nativeImage, screen } = require('electron')
const path = require('path')

let mainWindow = undefined;;
let tray = undefined;
//app.dock.hide();

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 300,
    height: 600,
    //-----tray----- start
    show: true, //set this false
    frame: false,
    fullscreen: false,
    resizable: false,
    transparent: false,
    //-----tray----- end
    webPreferences: {
      backgroundThrottling: false
    }
  })

// mainWindow.loadFile('index.html')
  mainWindow.loadFile(path.join(__dirname, 'index.html'))
  // Open the DevTools.
  // mainWindow.webContents.openDevTools()

//-----tray----- start
  mainWindow.on('closed',()=>mainWindow = null)
  // Hide the window when it loses focus
  mainWindow.on('blur', () => {
    // if (!mainWindow.webContents.isDevToolsOpened()) {
    //   mainWindow.hide();
    // }
  });
  //-----tray----- end
}

//-----tray----- start
const createTray = () => {
  const icon = path.join(__dirname, 'app', 'assets', 'tray.png')
  const nimage = nativeImage.createFromPath(icon)
  //tray is a app variable
  tray = new Tray(nimage)
  tray.on('click', (event)=>toggleWindow())
}

const toggleWindow = () => {
  mainWindow.isVisible() ? mainWindow.hide() : showWindow(); 
}

const showWindow = () => {
  const position = getWindowPosition();
  mainWindow.setPosition(position.x,position.y, false);
  mainWindow.show();
}

const getWindowPosition = () => {

//console.log(process.platform);
  //'aix'
  //'darwin'
  //'freebsd'
  //'linux'
  //'openbsd'
  //'sunos'
  //'win32'

const { screenWidth, screenHeight } = screen.getPrimaryDisplay().workAreaSize;
  const windowBounds = mainWindow.getBounds();
  const trayBounds = tray.getBounds(); 
  // Center window horizontally below the tray icon
  const x = Math.round(trayBounds.x + (trayBounds.width / 2) - (windowBounds.width / 2));
  let y = undefined;
  // Position window 4 pixels vertically below the tray icon
  if(process.platform == 'win32')
    y = Math.round(trayBounds.y - windowBounds.height);
  else
    y = Math.round(trayBounds.y + trayBounds.height + 4);

return {x,y}
}
//-----tray----- end

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.whenReady().then(() => {
  //-----tray----- start
  createTray()
  //-----tray----- end
  createWindow()
  
  app.on('activate', function () {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (BrowserWindow.getAllWindows().length === 0) createWindow()
  })
})

// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', function () {
  if (process.platform !== 'darwin') app.quit()
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
```
#### Edit package.json file
Insert/change this:
```json
"main": "app/main-tray.js",
```
* [sample1](main-tray.js) 
* [sample2](main-tray-two-windows.js)
----
# Packaging App

## Electron Builder
* en: There are mainly two options for packaging an Electron app and we will go with the second, [Electron Builder](https://www.npmjs.com/package/electron-builder/) (the other being Electron Packager).
```bash
$ npm i electron-builder --save-dev
```
We need to point the tool to the folder with the code to be compiled through the **package.json** by adding:
```json 
  "build": {
    "asar": true,
    "extends": null,
    "publish": null,
    "appId": "com.natancabral.react-js-electron-sqlite3",
    "compression": "maximum",
    "productName": "File Name App",
    "nsis": {
      "shortcutName": "App Name Shortcut",
      "installerIcon": "./app/assets/ico/icon48.ico",
      "oneClick": true,
      "perMachine": true,
      "allowElevation": true,
      "runAfterFinish": true,
      "createDesktopShortcut": true,
      "createStartMenuShortcut": true,
      "allowToChangeInstallationDirectory": false
    },
    "win": {
      "target": "nsis",
      "icon": "./app/assets/ico/icon48.ico"
    },
    "directories": {
      "buildResources": "./app",
      "output": "dist"
    },
    "files": [
      "package.json",
      "app/**/*"
    ]
  }
```
And inside scritps.
```json 
  "scripts": {
    ...
    "build:dist:1": "electron-builder",
    "build:dist:2": "electron-builder --dir",
    "build:postinstall": "electron-builder install-app-deps",
  }
``` 
Plus info.
```json 
"version": "1.0.0"
"author": "",
"description": "",
"license": "",
"private": true,
```

## Electron Packager
* en: Install [electron-packager](https://github.com/electron/electron-packager/)
```bash
$ npm install electron-packager --save-dev
```
#### Shotcut to create App 
* en: Open **package.json** and insert inside on scripts:
```json
"scripts": {
...
"packager:win:1": "electron-packager . --overwrite --platform=win32 --arch=ia32 --out=release-builds",
"packager:win:2": "electron-packager . --overwrite --platform=win32 --arch=ia32 --out=release-builds --icon=./app/assets/icons/win/app.ico",
"packager:win:3": "electron-packager . --overwrite --platform=win32 --arch=ia32 --out=release-builds --icon=./app/assets/icons/win/icon.ico --prune=true --version-string.CompanyName=CE --version-string.FileDescription=CE --version-string.ProductName=\"React Electron Sqlite\"",

"packager:mac:1": "electron-packager . --overwrite --platform=darwin --arch=x64 --out=release-builds",
"packager:mac:2": "electron-packager . --overwrite --platform=darwin --arch=x64 --out=release-builds --icon=./app/assets/icons/mac/icon.icns --prune=true",
"packager:mac:3": "electron-packager . --overwrite --platform=darwin --arch=x64 --out=release-builds --icon=./app/assets/icons/mac/app.icns --osx-sign.identity='React Electron Sqlite' --extend-info=assets/mac/info.plist",

"packager:linux:1": "electron-packager . --overwrite --platform=linux --arch=x64 --out=release-builds",
"packager:linux:2": "electron-packager . --overwrite --platform=linux --arch=x64 --out=release-builds --icon=./app/assets/icons/png/1024x1024.png --prune=true",

"packager:sign-exe": "signcode './release-builds/Electron API Demos-win32-ia32/Electron API Demos.exe' --cert ~/electron-api-demos.p12 --prompt --name 'React Electron Sqlite' --url 'http://electron.atom.io'",
"packager:installer": "node ./script/installer.js",
"packager:sign-installer": "signcode './release-builds/windows-installer/ElectronAPIDemosSetup.exe' --cert ~/electron-api-demos.p12 --prompt --name 'React Electron Sqlite' --url 'http://electron.atom.io'",
...
}
```
#### Create binary app
```bash
$ npm run packager:win:1
$ npm run packager:mac:1
$ npm run packager:linux:1
```
----
# Others

## Kill Process port:3000
#### Install find-process to close server x.x.x.x:3000
* en: Install find-process
```bash
$ npm install find-process
```
* en: main.js
```js
const find = require('find-process');

app.on('before-quit', (e) => {
  find('port', 3000)
  .then(function (list) {  
    if (list[0] != null) { 
      console.log('---kill---:', list[0].pid);
      process.kill(list[0].pid, 'SIGHUP'); 
    }
  })
  .catch((e) => {
    console.log('---error---',e.stack || e);
  });
});
```
## Test
#### Jest test
```bash
$ npm i jest
$ npm i babel-jest
```
#### React test renderer
```bash
$ npm i react-test-renderer
```
## Error
* Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/electron/.electron' [issues](https://github.com/npm/npm/issues/17268)
```bash
$ sudo npm install -g electron --unsafe-perm=true --allow-root
```
* Cant remove or update global create-react-app version.
```bash
$ sudo rm -rf /usr/local/bin/create-react-app
```
* Update babel
```bash
$ sudo npm install --save-dev @babel/core @babel/cli
$ sudo npx babel-upgrade --write --install # --install optional
```
* Danger: Permission denied
```bash
$ sudo npm install ... --unsafe-perm=true --allow-root # danger
```
* Gtk-Message: hh:mm:ss.mls: Failed to load module "canberra-gtk-module"
```bash
$  sudo apt-get install libcanberra-gtk-module
```

<!-- 
React + Electron
https://www.youtube.com/watch?v=2_fROfS8FPE
TrayIcon
https://www.youtube.com/watch?v=3kRmU-QVrSg

--

react-js-electron-database

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