Correction on week4

.prettierrc

@@ -0,0 +1,5 @@
+{
+   "semi": true,
+   "singleQuote": true,
+   "tabWidth": 2
+}

finance-tracker/app.js

@@ -1,3 +1,39 @@
-// This is the entrypoint for your application.
-// node app.js
+const chalk = require('chalk');
+const transactions = require('./data');
 
+const {
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getLargestExpense,
+  printAllTransactions,
+} = require('./finance');
+
+// Header
+console.log(chalk.bold('\n💰 PERSONAL FINANCE TRACKER 💰'));
+
+// All Transactions
+console.log('\nAll Transactions:');
+printAllTransactions();
+
+// Summary Header
+console.log(chalk.bold('\n📊 FINANCIAL SUMMARY 📊'));
+
+const income = getTotalIncome();
+const expenses = getTotalExpenses();
+const balance = getBalance();
+
+console.log(`Total Income: ${chalk.green('€' + income)}`);
+console.log(`Total Expenses: ${chalk.red('€' + expenses)}`);
+
+// Balance color logic
+const balanceColor = balance >= 0 ? chalk.cyan : chalk.red;
+console.log(`Current Balance: ${balanceColor('€' + balance)}`);
+
+// largest expenses and total
+const largest = getLargestExpense();
+console.log(
+  `\nLargerst Expenses: ${chalk.yellow(largest.description)} (${chalk.red('€' + largest.amount)})`,
+);
+
+console.log(`Total Transactions: ${transactions.length}\n`);

finance-tracker/data.js

@@ -1,2 +1,44 @@
-// 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: 'Monthly salary',
+    date: '2025-01-15',
+  },
+  {
+    id: 2,
+    type: 'expense',
+    category: 'housing',
+    amount: 1200,
+    description: 'Rent',
+    date: '2025-01-16',
+  },
+  {
+    id: 3,
+    type: 'expense',
+    category: 'food',
+    amount: 300,
+    description: 'Groceries',
+    date: '2025-01-17',
+  },
+  {
+    id: 4,
+    type: 'income',
+    category: 'side-income',
+    amount: 500,
+    description: 'Freelance',
+    date: '2025-01-18',
+  },
+  {
+    id: 5,
+    type: 'expense',
+    category: 'bills',
+    amount: 150,
+    description: 'Utilities',
+    date: '2025-01-19',
+  },
+];
+
+module.exports = transactions;

finance-tracker/finance.js

@@ -1,27 +1,59 @@
+const transactions = require('./data');
+
 function addTransaction(transaction) {
-  // TODO: Implement this function
+  return [...transactions, transaction];
 }
 
 function getTotalIncome() {
-  // TODO: Implement this function
+  const total = transactions.reduce(
+    (total, tx) => (tx.type === 'income' ? total + tx.amount : total),
+    0,
+  );
+
+  return total;
 }
 
 function getTotalExpenses() {
-  // TODO: Implement this function
+  const total = transactions.reduce(
+    (total, tx) => (tx.type === 'expense' ? total + tx.amount : total),
+    0,
+  );
+  return total;
 }
 
 function getBalance() {
-  // TODO: Implement this function
+  return getTotalIncome() - getTotalExpenses();
 }
 
 function getTransactionsByCategory(category) {
-  // TODO: Implement this function
+  const getByCatagory = transactions.filter((tx) => tx.category === category);
+  return getByCatagory;
 }
 
 function getLargestExpense() {
-  // TODO: Implement this function
+  const largest = transactions
+    .filter((tx) => tx.type === 'expense')
+    .reduce(
+      (max, tx) => (max === null || tx.amount > max.amount ? tx : max),
+      null,
+    );
+  return largest;
 }
 
 function printAllTransactions() {
-  // TODO: Implement this function
-}
+  transactions.forEach((tx, index) => {
+    console.log(
+      `${index + 1}. [${tx.type.toUpperCase()}] ${tx.description} - €${tx.amount} (${tx.category})`,
+    );
+  });
+}
+
+module.exports = {
+  addTransaction,
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getTransactionsByCategory,
+  getLargestExpense,
+  printAllTransactions,
+};

package.json

@@ -0,0 +1,27 @@
+{
+  "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/Dagim02/c55-core-week-4.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "bugs": {
+    "url": "https://github.com/Dagim02/c55-core-week-4/issues"
+  },
+  "homepage": "https://github.com/Dagim02/c55-core-week-4#readme",
+  "dependencies": {
+    "chalk": "^4.1.2"
+  },
+  "devDependencies": {
+    "prettier": "^3.8.1"
+  }
+}