Hamed R.

finance-tracker/.gitignore

@@ -0,0 +1 @@
+node_modules/

finance-tracker/.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "semi": true,
+  "trailingComma": "es5"
+}

finance-tracker/app.js

@@ -1,3 +1,83 @@
-// This is the entrypoint for your application.
+// This is the entrypoint for your application
 // node app.js
+const chalk = require('chalk');
+const transactions = require('./data');
+const {
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getTransactionsByCategory,
+  getLargestExpense,
+  getTransactionsByDateRange,
+  averageExpensePerCategory,
+} = require('./finance');
 
+// Display all transactions
+function printAllTransactions() {
+  console.log(chalk.bold('\n💰 PERSONAL FINANCE TRACKER 💰\n'));
+  console.log('All Transactions:');
+
+  transactions.forEach((t, i) => {
+    const label =
+      t.type === 'income' ? chalk.green('[INCOME]') : chalk.red('[EXPENSE]');
+    const amountColor =
+      t.type === 'income'
+        ? chalk.green(`€${t.amount}`)
+        : chalk.red(`€${t.amount}`);
+    console.log(
+      `${i + 1}. ${label} ${t.description} - ${amountColor} (${chalk.yellow(t.category)})`
+    );
+  });
+}
+
+// Display transactions by date range
+function printTransactionsByDateRange(start, end) {
+  const results = getTransactionsByDateRange(start, end);
+  console.log(chalk.bold(`\nTransactions from ${start} to ${end}:`));
+
+  results.forEach((t, i) => {
+    const label =
+      t.type === 'income' ? chalk.green('[INCOME]') : chalk.red('[EXPENSE]');
+    const amountColor =
+      t.type === 'income'
+        ? chalk.green(`€${t.amount}`)
+        : chalk.red(`€${t.amount}`);
+    console.log(
+      `${i + 1}. ${label} ${t.description} - ${amountColor} (${chalk.yellow(t.category)})`
+    );
+  });
+}
+
+// Display summary
+function printSummary() {
+  const income = getTotalIncome();
+  const expenses = getTotalExpenses();
+  const balance = getBalance();
+  const largestExpense = getLargestExpense();
+
+  console.log(chalk.bold('\n📊 FINANCIAL SUMMARY 📊'));
+  console.log(chalk.bold(`Total Income: €${income}`));
+  console.log(chalk.bold(`Total Expenses: €${expenses}`));
+
+  const balanceText =
+    balance >= 0 ? chalk.cyan(`€${balance}`) : chalk.red(`€${balance}`);
+  console.log(chalk.bold('Current Balance: '), balanceText);
+
+  if (largestExpense) {
+    console.log(
+      `\nLargest Expense: ${largestExpense.description} (€${largestExpense.amount})`
+    );
+  }
+
+  console.log(`Total Transactions: ${transactions.length}`);
+
+  const averages = averageExpensePerCategory();
+  console.log(chalk.bold('\nAverage Expense per Category:'));
+  for (const category in averages) {
+    console.log(`${chalk.yellow(category)}: €${averages[category].toFixed(2)}`);
+  }
+}
+
+printAllTransactions();
+printSummary();
+printTransactionsByDateRange('2025-01-01', '2025-01-25');

finance-tracker/data.js

@@ -1,2 +1,101 @@
 // 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: 'housing',
+    amount: 1200,
+    description: 'Rent',
+    date: '2025-01-01',
+  },
+  {
+    id: 3,
+    type: 'expense',
+    category: 'food',
+    amount: 450,
+    description: 'Groceries',
+    date: '2025-01-10',
+  },
+  {
+    id: 4,
+    type: 'income',
+    category: 'side-income',
+    amount: 700,
+    description: 'Freelance',
+    date: '2025-01-20',
+  },
+  {
+    id: 5,
+    type: 'expense',
+    category: 'bills',
+    amount: 300,
+    description: 'Utilities',
+    date: '2025-01-05',
+  },
+  {
+    id: 6,
+    type: 'expense',
+    category: 'transport',
+    amount: 120,
+    description: 'Public transport',
+    date: '2025-01-12',
+  },
+  {
+    id: 7,
+    type: 'expense',
+    category: 'entertainment',
+    amount: 200,
+    description: 'Cinema & dinner',
+    date: '2025-01-18',
+  },
+  {
+    id: 8,
+    type: 'income',
+    category: 'bonus',
+    amount: 400,
+    description: 'Performance bonus',
+    date: '2025-01-25',
+  },
+  {
+    id: 9,
+    type: 'expense',
+    category: 'health',
+    amount: 90,
+    description: 'Pharmacy',
+    date: '2025-01-08',
+  },
+  {
+    id: 10,
+    type: 'expense',
+    category: 'shopping',
+    amount: 250,
+    description: 'Clothes',
+    date: '2025-01-22',
+  },
+  {
+    id: 11,
+    type: 'income',
+    category: 'gift',
+    amount: 150,
+    description: 'Birthday gift',
+    date: '2025-01-28',
+  },
+  {
+    id: 12,
+    type: 'expense',
+    category: 'food',
+    amount: 80,
+    description: 'Restaurant',
+    date: '2025-01-27',
+  },
+];
+
+module.exports = transactions;

finance-tracker/finance.js

@@ -1,27 +1,91 @@
+const transactions = require('./data');
+
+// Add new transaction
 function addTransaction(transaction) {
-  // TODO: Implement this function
+  transactions.push({ ...transaction });
 }
 
+// Total income
 function getTotalIncome() {
-  // TODO: Implement this function
+  let total = 0;
+  for (const transaction of transactions) {
+    if (transaction.type === 'income') total += transaction.amount;
+  }
+  return total;
 }
 
+// Total expenses
 function getTotalExpenses() {
-  // TODO: Implement this function
+  let total = 0;
+  for (const transaction of transactions) {
+    if (transaction.type === 'expense') total += transaction.amount;
+  }
+  return total;
 }
 
+// Current balance
 function getBalance() {
-  // TODO: Implement this function
+  return getTotalIncome() - getTotalExpenses();
 }
 
+// Filter transactions by category
 function getTransactionsByCategory(category) {
-  // TODO: Implement this function
+  const result = [];
+  for (const transaction of transactions) {
+    if (transaction.category.includes(category)) result.push(transaction);
+  }
+  return result;
 }
 
+// Find largest expense
 function getLargestExpense() {
-  // TODO: Implement this function
+  let largest = null;
+  for (const transaction of transactions) {
+    if (
+      transaction.type === 'expense' &&
+      (!largest || transaction.amount > largest.amount)
+    ) {
+      largest = transaction;
+    }
+  }
+  return largest;
+}
+
+// Search by date range
+function getTransactionsByDateRange(start, end) {
+  const result = [];
+  for (const transaction of transactions) {
+    if (transaction.date >= start && transaction.date <= end)
+      result.push(transaction);
+  }
+  return result;
+}
+
+// Average expense per category
+function averageExpensePerCategory() {
+  const totals = {};
+  const counts = {};
+  for (const transaction of transactions) {
+    if (transaction.type === 'expense') {
+      totals[transaction.category] =
+        (totals[transaction.category] || 0) + transaction.amount;
+      counts[transaction.category] = (counts[transaction.category] || 0) + 1;
+    }
+  }
+  const averages = {};
+  for (const category in totals) {
+    averages[category] = totals[category] / counts[category];
+  }
+  return averages;
 }
 
-function printAllTransactions() {
-  // TODO: Implement this function
-}
+module.exports = {
+  addTransaction,
+  getTotalIncome,
+  getTotalExpenses,
+  getBalance,
+  getTransactionsByCategory,
+  getLargestExpense,
+  getTransactionsByDateRange,
+  averageExpensePerCategory,
+};