make low level program code

Author: FarrelAD

src/main.js

@@ -1,73 +1,159 @@
 import fs from 'fs'
 import path from 'path'
 import { fileURLToPath } from 'url'
+import { exit } from 'process'
 import chalk from 'chalk'
 import readlineSync from 'readline-sync'
 
 
 
 
+// Simplify std out from `console.log` into `print`
+const print = console.log
+
+
 /**
  * TODO:
  * 
- * - Just complete the program flow based on some console.log below [0/7]
+ * - Just complete the program flow based on some print below [0/7]
  */
 
 
 const dataDir = path.join(path.dirname(fileURLToPath(import.meta.url)), '..', 'data')
 
+const showGuide = () => {
+    print('This is a guide for this program!');
+    for (let i = 1; i <= 5; i++) {
+        print('Data: ', i)
+    }
 
-let confirmation = 0
-do {
-    console.log(`
-==========================
-        WELCOME!
-==========================
-SIMPLE LINEAR REGRESSION DEMO
-    `)
-
-    // 1
-    console.log('Show menu')
 
-    console.log(`
-==========================
-1. Guide
-2. Run demo
-==========================
-`)
+    if (!readlineSync.keyInYNStrict(chalk.green('Back?'))) {
+        exit(0)
+    }
+}
 
+const runDemo = () => {
     let files
     try {
-        console.log('Scanning data input file ...')
+        print('Scanning data input file ...')
         files = fs.readdirSync(dataDir)
 
-        console.log('Choose file to do simple demo linear regression: ')
+        print('Choose file to do simple demo linear regression: ')
         files.forEach(file => {
-            console.log(chalk.blue('- ', file))
+            print(chalk.blue('- ', file))
         })
     } catch (error) {
-        console.error(chalk.red('Error reading directory: ', error.message))
+        print(chalk.red('Error reading directory: ', error.message))
+        return;
     }
 
+    if (readlineSync.keyInYNStrict(chalk.green('Preview data?'))) {
+        previewData('data passed')
+    }
 
-    // 2
-    console.log('Preview data')
+}
+
+const previewData = (data) => {
+    print('Preview data: ', data)
+
+    if (readlineSync.keyInYNStrict(chalk.green('Continue next process?'))) {
+        dataIdentification()
+    }
+}
+
+
+
+
+const dataIdentification = () => {
+    print('Data identification!')
+    const feature = readlineSync.question('Choose feature: ')
+    const label = readlineSync.question('Choose label: ')
+
+    if (readlineSync.keyInYNStrict(chalk.green('Continue process data?'))) {
+        processing()
+    }
+}
+
+
+
+
+const processing = () => {
+    print('Model processing!')
+    for (let i = 1; i <= 20; i++) {
+        print('iteration: ', i)
+    }
+
+    if (readlineSync.keyInYNStrict(chalk.green('Show visualization: '))) {
+        visualization()
+    }
+}
+
+
 
-    // 3
-    console.log('Choose feature')
 
-    // 4
-    console.log('Choose target')
 
-    // 5
-    console.log('Processing...')
+const visualization = () => {
+    print('Visualization here!')
+    print('Graph, chart, or whatever...')
 
-    // 6
-    console.log('Show the linear equation result')
 
     // 7
-    console.log('Show the prove of linear equation is actually match with user data')
+    print('Show the prove of linear equation is actually match with user data')
+}
+
+
+
+
+
+
+
+/////////////////////////////////////////////////////////////////////
+////  6MMMMb\ MMMMMMMMMM       dM.     `MMMMMMMb.  MMMMMMMMMM   /////
+////  6M'    ` /   MM   \      ,MMb      MM    `Mb  /   MM   \  /////
+////  MM           MM          d'YM.     MM     MM      MM      /////
+////  YM.          MM         ,P `Mb     MM     MM      MM      /////
+////   YMMMMb      MM         d'  YM.    MM    .M9      MM      /////
+////       `Mb     MM        ,P   `Mb    MMMMMMM9'      MM      /////
+////        MM     MM        d'    YM.   MM  \M\        MM      /////
+////        MM     MM       ,MMMMMMMMb   MM   \M\       MM      /////
+////  L    ,M9     MM       d'      YM.  MM    \M\      MM      /////
+////  MYMMMM9     _MM_    _dM_     _dMM__MM_    \M\_   _MM_     /////
+/////////////////////////////////////////////////////////////////////
 
-    confirmation = readlineSync.questionInt('Continue? ')
-} while (confirmation == 0);
+do {
+    console.clear()
+    print(`
+==========================
+        WELCOME!
+==========================
+SIMPLE LINEAR REGRESSION DEMO
+==========================
+-----------MENU-----------
+==========================
+1. Guide
+2. Run demo
+3. Exit
+==========================
+    `)
+
+    const selectedMenu = readlineSync.questionInt(chalk.green('Choose menu: '))
+    console.clear()
+
+    switch (selectedMenu) {
+        case 1:
+            showGuide()
+            break;
+        case 2:
+            runDemo()
+            break;
+        case 3:
+            print('Bye!')
+            exit(0);
+            break;
+        default:
+            print('Invalid input! Menu can not be found!')
+            break;
+    }
 
+} while (readlineSync.keyInYNStrict(chalk.green('\nContinue program? ')))