Budget Buddy App

An expense tracker app built using Dart and Flutter that allows users to add, delete, and view expenses. The app supports both light and dark modes, validates user inputs, and provides a snackbar action to undo deleted expenses within 3 seconds. The theme adapts according to the system settings. Additionally, the app includes a chart bar to display expenses category-wise using the expensebucket utility function.

Features

Add Expense: Add expenses with a category, date, and amount.
Delete Expense: Swipe in any direction to delete an expense.
Undo Deletion: Snackbar action to undo deleted expenses within 3 seconds.
Input Validation: Validates inputs and shows warnings for incorrect or empty fields.
Unique IDs: Uses the uuid package to generate unique IDs for each expense.
Light and Dark Mode: Supports both light and dark themes based on the system theme.
Category-wise Chart: Displays expenses in a chart based on categories.

Screenshots

Installation

Clone the repository:

git clone https://github.com/saumyasinha31/budget-buddy.git

Navigate to the project directory:
```
cd budget-buddy
```
Install dependencies:
```
flutter pub get 
```
Run the app:
```
flutter run
```

Usage

Adding an Expense

Click the add button in the top-right corner.
Enter the category, date, and amount.
Click the 'Add' button to save the expense.

Deleting an Expense

Swipe an expense item in any direction.
A snackbar will appear with an undo option.
Click 'Undo' within 3 seconds to restore the deleted expense.

Viewing Expenses

Expenses are listed on the home screen.
A chart displays expenses categorized by type.

Customizing

The app adapts to the system theme automatically. However, you can manually set the theme by modifying the ThemeData in the main Dart file.

 *main.dart file* : 

  themeMode: ThemeMode.system, // system theme
  themeMode: ThemeMode.dark,   // dark theme
  themeMode: ThemeMode.light, // light theme

Contributing

Fork the repository.
Create your feature branch:
```
git checkout -b feature/YourFeature
```
Commit your changes:
```
git commit -m 'Add some feature'
```
Push to the branch:
```
git push origin feature/YourFeature
```
Open a pull request.