Completed level 2 of the object exercises

Almost completed level 3

01_Day_JavaScript_Refresher/01_javascript_refresher/Object Exercises/level2.js

@@ -53,11 +53,65 @@ const users = {
 function mostSkills() {
     let obj = undefined;
     for (const person in users) {
-        if (users.person.skills.length > obj.skills.length) {
+		if (obj == undefined) {
-            obj = users.person;
+			obj = users[person];
+			continue;
 		}
+        if (users[person].skills.length > obj.skills.length) {
+            obj = users[person];
         }
-    console.log(obj);
+    }
+    return obj;
+}
+
+function enoughPoints() {
+	let count = 0;
+	for (const person in users) {
+		if (Object.hasOwnProperty.call(users, person)) {
+			if (users[person].points >= 50) {
+				count += 1;
+			}	
+		}
+	}
+	return count;
+}
+
+function findMERN() {
+	const MERN = ["MongoDB", "Express", "React", "Node"];
+	const people = {};
+	for (const person in users) {
+		if (Object.hasOwnProperty.call(users, person) && MERN.every(stack => users[person].skills.includes(stack))) {
+			people[person] = users[person];
+		}
+	}
+	return people;
+}
+
+function addUser(user) {
+	let name = user.email;
+	name = name.split("@")[0];
+	name = name[0].toUpperCase() + name.slice(1);
+	users[name] = user;
+}
+
+function getKeys() {
+	const keys = [];
+	for (const person in users) {
+		if (Object.hasOwnProperty.call(users, person)) {
+			keys.push(person);
+		}
+	}
+	return keys;
+}
+
+function getValues() {
+	const values = [];
+	for (const person in users) {
+		if (Object.hasOwnProperty.call(users, person)) {
+			values.push(users[person]);
+		}
+	}
+	return values;
 }
 
-mostSkills();
+// no countries object???

01_Day_JavaScript_Refresher/01_javascript_refresher/Object Exercises/level3.js

@@ -0,0 +1,160 @@
+const personAccount = {
+    firstName: "Joe",
+    lastName: "Dover",
+    incomes: [0],
+    expenses: [0],
+    
+    totalIncome: function() {
+        return this.incomes.reduce((acc, val) => acc+val);
+    },
+    
+    totalExpense: function() {
+        return this.expenses.reduce((acc, val) => acc+val);
+    },
+    
+    accountInfo: function() {
+        return `Name: ${this.lastName} ${this.firstName} In/Out: ${this.totalIncome()}/${this.totalExpense()}`;
+    },
+    
+    addExpense: function(expense) {
+        this.expenses.push(expense);
+    },
+    
+    accountBalance: function() {
+        return this.totalIncome() - this.totalExpense();
+    }
+}
+
+const users = [
+    {
+        _id: 'ab12ex',
+        username: 'Alex',
+        email: 'alex@alex.com',
+        password: '123123',
+        createdAt: '08/01/2020 9:00 AM',
+        isLoggedIn: false,
+    },
+    {
+        _id: 'fg12cy',
+        username: 'Asab',
+        email: 'asab@asab.com',
+        password: '123456',
+        createdAt: '08/01/2020 9:30 AM',
+        isLoggedIn: true,
+    },
+    {
+        _id: 'zwf8md',
+        username: 'Brook',
+        email: 'brook@brook.com',
+        password: '123111',
+        createdAt: '08/01/2020 9:45 AM',
+        isLoggedIn: true,
+    },
+    {
+        _id: 'eefamr',
+        username: 'Martha',
+        email: 'martha@martha.com',
+        password: '123222',
+        createdAt: '08/01/2020 9:50 AM',
+        isLoggedIn: false,
+    },
+    {
+        _id: 'ghderc',
+        username: 'Thomas',
+        email: 'thomas@thomas.com',
+        password: '123333',
+        createdAt: '08/01/2020 10:00 AM',
+        isLoggedIn: false,
+    },
+]
+const products = [
+    {
+        _id: 'eedfcf',
+        name: 'mobile phone',
+        description: 'Huawei Honor',
+        price: 200,
+        ratings: [
+        { userId: 'fg12cy', rate: 5 },
+        { userId: 'zwf8md', rate: 4.5 },
+        ],
+        likes: [],
+    },
+    {
+        _id: 'aegfal',
+        name: 'Laptop',
+        description: 'MacPro: System Darwin',
+        price: 2500,
+        ratings: [],
+        likes: ['fg12cy'],
+    },
+    {
+        _id: 'hedfcg',
+        name: 'TV',
+        description: 'Smart TV:Procaster',
+        price: 400,
+        ratings: [{ userId: 'fg12cy', rate: 5 }],
+        likes: ['fg12cy'],
+    },
+]
+
+function signUp(username, email, password) {
+    if (accountExists(email)) {
+        console.log("This account already exists");
+        return;
+    }
+    const newUser = {};
+    newUser._id = userIdGenerator();
+    newUser.username = username;
+    newUser.email = email;
+    newUser.password = password;
+    newUser.createdAt = showDateTime();
+    isLoggedIn = false;
+}
+
+function showDateTime() {
+    const format = {
+        year: "numeric",
+        month: "2-digit",
+        day: "2-digit",
+        hour: "2-digit",
+        minute: "2-digit"
+    };
+    console.log(Intl.DateTimeFormat(undefined, format).format(new Date()).replace(',', ''));
+}
+
+function userIdGenerator() {
+    const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    result = "";
+    for (let i = 0; i < 7; i++) {
+        result += chars[Math.floor(Math.random() * chars.length)];
+    }
+    console.log(result);
+    return result;
+}
+
+/**
+ * Checks if the account already exists
+ * returns boolean
+ */
+function accountExists(email) {
+    users.forEach(user => {
+        if (user.email == email) {
+            return true;
+        }
+    });
+    return false;
+}
+
+function rateProduct(userID, productID, rating) {
+    products.forEach(product => {
+        if (product._id == productID) {
+            product.ratings.push({userId: userID, rate: rating});
+            return;
+        }
+    });
+    console.log("There is no such product");
+}
+
+function averageRating() {
+    
+}