add solutions to day01

_solutions/day-01/exercise3/level1.js

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+// Exercise 3 - Level 1
+
+const dog = {}
+
+dog.name = 'Montgomery'
+dog.legs = 4
+dog.colour = 'brown'
+dog.age = 2
+
+dog.bark = function () {
+    console.log('woof woof')
+}
+
+dog.breed = 'Pug'
+dog.getDog = function () {
+    console.log(dog)
+}
+
+console.log(dog.name, dog.legs, dog.colour, dog.age, dog.breed)
+
+dog.getDog()

_solutions/day-01/exercise3/level2.js

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+// Exercise 3 - Level 2
+
+const users = {
+    Alex: {
+      email: 'alex@alex.com',
+      skills: ['HTML', 'CSS', 'JavaScript'],
+      age: 20,
+      isLoggedIn: false,
+      points: 30
+    },
+    Asab: {
+      email: 'asab@asab.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'Redux', 'MongoDB', 'Express', 'React', 'Node'],
+      age: 25,
+      isLoggedIn: false,
+      points: 50
+    },
+    Brook: {
+      email: 'daniel@daniel.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'React', 'Redux'],
+      age: 30,
+      isLoggedIn: true,
+      points: 50
+    },
+    Daniel: {
+      email: 'daniel@alex.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'Python'],
+      age: 20,
+      isLoggedIn: false,
+      points: 40
+    },
+    John: {
+      email: 'john@john.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'React', 'Redux', 'Node.js'],
+      age: 20,
+      isLoggedIn: true,
+      points: 50
+    },
+    Thomas: {
+      email: 'thomas@thomas.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'React'],
+      age: 20,
+      isLoggedIn: false,
+      points: 40
+    },
+    Paul: {
+      email: 'paul@paul.com',
+      skills: ['HTML', 'CSS', 'JavaScript', 'MongoDB', 'Express', 'React', 'Node'],
+      age: 20,
+      isLoggedIn: false,
+      points: 40
+    }
+  }
+
+getMostSkilled = function () {
+    let maxSkillsPerson = null;
+    let maxSkillsCount = 0;
+
+    Object.keys(users).forEach((person) => {
+        const skillsCount = users[person].skills.length;
+        if (skillsCount > maxSkillsCount) {
+            maxSkillsPerson = person;
+            maxSkillsCount = skillsCount;
+        }
+    });
+
+console.log(maxSkillsPerson);
+}
+
+getMostSkilled();
+
+
+const copyUsers = Object.assign({}, users)
+
+const newUser = {
+    email: 'newuser@example.com',
+    skills: ['HTML', 'CSS', 'JavaScript'],
+    age: 22,
+    isLoggedIn: true,
+    points: 35
+  };
+  
+copyUsers['NewUser'] = newUser;
+
+
+const keys = Object.keys(copyUsers)
+const values = Object.values(copyUsers)
+const entries = Object.entries(copyUsers)
+

_solutions/day-01/exercise3/level3.js

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+// Exercise 3 - Level 3
+
+const {users, products} = require('./users-products.js');
+
+const currentDate = new Date()
+
+const personAccount = {
+    firstName: '',
+    lastName: '',
+    incomes: '',
+    expenses: '',
+    totalIncome: function () {
+
+    },
+    totalExpense: function () {
+
+    },
+    accountInfo: function () {
+
+    },
+    addIncome: function () {
+
+    },
+    addExpense: function () {
+
+    },
+    accountBalance: function () {
+
+    }
+}
+
+
+formatDateTime = function () {
+    const year = currentDate.getFullYear()
+    const month = currentDate.getMonth() 
+    const day = currentDate.getDate()
+    const hours = currentDate.getHours()
+    const minutes = currentDate.getMinutes()
+    let amPm = 'AM'
+    let formatDay = day
+    let formatMonth = month
+
+    if (hours > 11) {
+        amPm = 'PM'
+    } else amPm = 'AM'
+
+    if (day < 10) {
+        formatDay = `0${day}`
+    }
+
+    if (month < 10) {
+        formatMonth = `0${month}`
+    }
+
+    return `${formatDay}/${formatMonth}/${year} ${hours}:${minutes} ${amPm}`
+}
+
+
+
+// a. Create a function called signUp which allows user to add to the collection. If user exists, inform the user that he has already an account.
+
+signUp = function (email, password) {
+        if (users.some((user) => user.email === email)) {
+            console.log('An account with this email already exists!');
+        } else {
+            const username = email.slice(0, email.indexOf('@'));
+            const capitalUsername = username[0].toUpperCase + username.slice(1)
+            newUser = {
+                _id: 'az17ds',
+                username: capitalUsernamesername,
+                email: email,
+                password: password,
+                createdAt: formatDateTime(),
+                isLoggedIn: true,
+            }
+        users.push(newUser)
+        console.log('New user created!')
+        }
+}
+
+function deleteUserByEmail(email) {
+    const userIndex = users.findIndex((user) => user.email === email);
+  
+    if (userIndex !== -1) {
+      users.splice(userIndex, 1);
+      console.log(`User with email ${email} has been deleted.`);
+    } else {
+      console.log('User with email not found.');
+    }
+  }
+
+
+// b. Create a function called signIn which allows user to sign in to the application
+
+const signIn = function (email, password) {
+    const foundUser = users.find((user) => user.email === email && user.password === password);
+    
+    if (foundUser) {
+      foundUser.isLoggedIn = true;
+      console.log('You have logged in!');
+    } else {
+      console.log('Incorrect email or password.');
+    }
+  };
+
+

_solutions/day-01/exercise3/users-products.js

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+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'],
+    },
+  ]
+
+module.exports = {users, products}