[TM-6.7/st-compl] training-module

Solving 2 tasks. Working with "early return, if/else, trim()".

FS-dev: B-3 / JS basic

Author: matowdev

full-stack-dev/3-js-basic/6-boolean-logic/6-7-training-module/training.js

@@ -0,0 +1,79 @@
+'use strict';
+
+// Задание 1:
+// Нужно определить процент скидки на основе типа клиента и суммы покупки, полученных из аргументов командной строки.
+
+function getDiscountPercentage(customerType, purchaseAmount) {
+  if (!customerType || typeof customerType !== 'string') {
+    return `0%`;
+  }
+
+  if (!purchaseAmount || typeof purchaseAmount !== 'number') {
+    return `0%`;
+  }
+
+  customerType = customerType.trim();
+  let discountPercent = 0;
+
+  if (customerType === 'vip') {
+    discountPercent = 15;
+  } else if (customerType === 'premium') {
+    discountPercent = 10;
+  } else if (customerType === 'regular') {
+    if (purchaseAmount >= 1000) {
+      discountPercent = 5;
+    }
+  }
+
+  return `${discountPercent}%`;
+}
+
+console.log(getDiscountPercentage('regular', 500)); // "0%"
+console.log(getDiscountPercentage('regular', 1500)); // "5%"
+console.log(getDiscountPercentage('premium', 300)); // "10%"
+console.log(getDiscountPercentage('vip', 800)); // "15%"
+console.log(getDiscountPercentage('', 800)); // "0%"
+console.log(getDiscountPercentage('vip')); // "0%"
+
+// Задание 2:
+// Определить тип подписки (BASIC, STANDARD, PREMIUM) на основе количества входов, статуса обучения и возраста аккаунта.
+
+function getSubscriptionType(
+  monthlyLogins,
+  hasCompletedTutorialStr,
+  accountAge
+) {
+  if (!monthlyLogins || typeof monthlyLogins !== 'number') {
+    return '';
+  }
+
+  if (!hasCompletedTutorialStr || typeof hasCompletedTutorialStr !== 'string') {
+    return '';
+  }
+
+  if (!accountAge || typeof accountAge !== 'number') {
+    return '';
+  }
+
+  hasCompletedTutorialStr = hasCompletedTutorialStr.trim().toLowerCase();
+  const hasCompletedTutorial = hasCompletedTutorialStr === 'true';
+
+  if (hasCompletedTutorial === false || monthlyLogins < 5) {
+    return 'BASIC';
+  } else if (
+    hasCompletedTutorial === true &&
+    monthlyLogins >= 20 &&
+    accountAge > 30
+  ) {
+    return 'PREMIUM';
+  } else {
+    return 'STANDARD';
+  }
+}
+
+console.log(getSubscriptionType(3, 'false', 45)); // "BASIC"
+console.log(getSubscriptionType(25, 'true', 60)); // "PREMIUM"
+console.log(getSubscriptionType(12, 'true', 15)); // "STANDARD"
+console.log(getSubscriptionType(8, 'false', 100)); // "BASIC"
+console.log(getSubscriptionType(1, ' TRUE', 10)); // "BASIC"
+console.log(getSubscriptionType()); // ""