Yusup R.

.prettierrc

@@ -0,0 +1,8 @@
+
+{
+    "semi": true,
+    "singleQuote": true,
+    "tabWidth": 2,
+    "trailingComma": "es5",
+    "printWidth": 80
+}

finance-tracker/app.js

@@ -1,3 +1,40 @@
-// This is the entrypoint for your application.
-// node app.js
+const chalk = require('chalk');
+const data = require('./data');
+const transactions = data.transactions;
 
+const {
+  addTransaction,
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getTransactionsByCategory,
+  getLargestExpense,
+  printAllTransactions
+} = require('./finance');
+
+// Example usage of the functions
+console.log(chalk.blue('💰 PERSONAL FINANCE TRACKER 💰'));
+
+printAllTransactions(transactions);
+
+console.log('\n📊 FINANCIAL SUMMARY 📊');
+console.log(chalk.bold('Total Income:') + chalk.green(` €${getTotalIncome(transactions)}`));
+console.log(chalk.bold('Total Expenses:') + chalk.red(` €${getTotalExpenses(transactions)}`));
+console.log(chalk.bold('Current Balance:') + (getBalance(transactions) < 0 ? chalk.red : chalk.cyan)(` €${getBalance(transactions)}`));
+
+const largest = getLargestExpense(transactions);
+if (largest) {
+    console.log(chalk.bold(`\nLargest Expense: ${largest.category} (€${largest.amount})`));
+}
+
+
+console.log(chalk.bold(`Total Transactions: ${transactions.length}`));
+
+addTransaction({
+    id: 6,
+    type: 'expense',
+    category: 'entertainment',
+    amount: 200,
+    description: 'Concert tickets',
+    date: '2025-02-05'
+});

finance-tracker/data.js

@@ -1,2 +1,43 @@
 // Place here the transaction data array. Use it in your application as needed.
-const transactions = [];
+const transactions = [
+    {id: 1,
+        type: 'income',
+        category: 'Salary',
+        amount: 3000,
+        description: 'salary',
+        date: '2025-01-15'
+    },
+    {id: 2,
+        type: 'expense',
+        category: 'Rent',
+        amount: 1200,
+        description: 'housing',
+        date: '2025-01-25'
+    },
+    {id: 3,
+        type: 'expense',
+        category: 'Groceries',
+        amount: 300,
+        description: 'food',
+        date: '2025-01-20'
+    },
+
+    {id: 4,
+        type: 'income',
+        category: 'Freelance',
+        amount: 500,
+        description: 'side-income',
+        date: '2025-01-28'
+    },
+    {id: 5,
+        type: 'expense',
+        category: 'Utilities',
+        amount: 150,
+        description: 'bills',
+        date: '2025-01-30'
+    }
+];
+
+module.exports = {
+    transactions
+};

finance-tracker/finance.js

@@ -1,27 +1,79 @@
-function addTransaction(transaction) {
-  // TODO: Implement this function
+const chalk = require('chalk');
+
+let transactions = [];  
+
+function addTransaction(singleTransaction) {
+  const newTransaction = { ...singleTransaction };
+  transactions.push(newTransaction);
+}
+
+function getTotalIncome(transactions) {
+  let total = 0;
+  for (const singleTransaction of transactions) {
+    if(singleTransaction.type === 'income') {
+      total += singleTransaction.amount;
+    }
+  }
+  return total;
 }
 
-function getTotalIncome() {
-  // TODO: Implement this function
+function getTotalExpenses(transactions) {
+  let total = 0;
+  for (const singleTransaction of transactions) {
+    if(singleTransaction.type === 'expense') {
+      total += singleTransaction.amount;
+    }
+  }
+  return total;
 }
 
-function getTotalExpenses() {
-  // TODO: Implement this function
+function getBalance(transactions) {
+  const income = getTotalIncome(transactions);
+  const expenses = getTotalExpenses(transactions);
+  return income - expenses;
 }
 
-function getBalance() {
-  // TODO: Implement this function
+function getTransactionsByCategory(category, transactions) {
+  const results = [];
+  for (const singleTransaction of transactions) {
+    if(singleTransaction.category === category) {
+      results.push(singleTransaction);
+    }
+  }
+  return results;
 }
 
-function getTransactionsByCategory(category) {
-  // TODO: Implement this function
+function getLargestExpense(transactions) {
+  let largest = null;
+  for (const singleTransaction of transactions) {
+    if(singleTransaction.type === 'expense') {
+      if(largest === null || singleTransaction.amount > largest.amount) {
+        largest = singleTransaction;
+      }
+    }
+  }
+  return largest;
 }
 
-function getLargestExpense() {
-  // TODO: Implement this function
+function printAllTransactions(transactions) {
+  console.log('\nAll Transactions:');
+  let index = 1;
+  for (const singleTransaction of transactions) {
+    const {id, type, category, amount, description} = singleTransaction;
+    const typeLabel = type === 'income' ? chalk.green('Income') : chalk.red('Expense');
+    const coloredAmount = type === 'income' ? chalk.green(`${amount}`) : chalk.red(`${amount}`);
+    const coloredCategory = chalk.yellow(`${category}`);
+    console.log(`${index}. [${typeLabel}] ${coloredCategory} - ${coloredAmount} (${description})`);
+    index++;
+  }
 }
 
-function printAllTransactions() {
-  // TODO: Implement this function
-}
+module.exports = {
+  addTransaction,
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getTransactionsByCategory,
+  getLargestExpense,
+  printAllTransactions
+};

package.json

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+{
+  "name": "c55-core-week-4",
+  "version": "1.0.0",
+  "description": "The week 4 assignment for the HackYourFuture Core program can be found at the following link: https://hub.hackyourfuture.nl/core-program-week-4-assignment",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Yusuprozimemet/c55-core-week-4.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "bugs": {
+    "url": "https://github.com/Yusuprozimemet/c55-core-week-4/issues"
+  },
+  "homepage": "https://github.com/Yusuprozimemet/c55-core-week-4#readme",
+  "dependencies": {
+    "chalk": "^4.1.2"
+  }
+}