⚡ VoltStudy 📚

🏠 Home Activity:

VoltStudy leverages a Java-based Android architecture with Firebase real-time database, authentication, and cloud storage for dynamic content delivery and user management. The app integrates Apache POI for document handling, ExoPlayer for multimedia playback, Glide for image optimization, and OkHttp for network communication. In-app billing is implemented for monetization, while Node.js Cloud Functions handle backend tasks like revenue calculation. Additional libraries enhance the user experience with features such as video compression, email support, toast notifications, image cropping, and PDF viewing. The app's scalable design facilitates future growth and feature enhancements.

🚀 Features

• Dynamic Course Content :

  • Textual PDF Courses:
    
    

  • Video Courses:
    

• Quizzes & Certification: Implemented gamification with section-wise quizzes.

Attempt quiz after each chapter	Complete before you run out of time	Score above 50% to unlock next chapter
Answer multiple choice questions in time	Know your right and wrong answers to learn	Get your custom certificate after completing all quizzes

• In-App Purchases: Users can purchase courses using Google's in-app billing:

• UI Components :

  • Splash screen :
  
  
  
  
  • Interactive animations :
  
  
  
  
  • Save liked courses :
  
  
  
  
  • Fluid Navigation :
  
  

• User Authentication & Management :

Sign In	Registration with Email OTP Verification

View or update details	Reset Password

• Trainers Registration :

Checks if user is a trainer	Trainer E-mail before registration

Trainer basic details form	Trainer academic background form

• Trainer Admin Panel :

Trainer Dashboard	Set course details and thumbnail

Video preview before upload	Automatic compressed upload

Create Quizzes	Set name and time limit

PDF course upload	Checks to help users

• Course search filters :

• Community Interaction :

  • Doubt Discussion :
  
  
  
  
  • Like correct answers :
  
  
  
  

Ask questions with or without images	Share with friends

Feedback & FAQs

Share feedback with us	Frequently asked questions

Additional Features

• Images, PDFs & Video compression: Automatic compression of files during upload to ensure efficient data usage and storage.

• Trainer account moderation: Email is sent to super admin with TrainerID, their academic background and personal details for verification.

• Course content moderation: Email is sent to super admin with AuthorID, CourseID and other content for verification.

🛠️ Setup & Deployment

1. Clone the repository:

Begin by cloning the project repository to your local machine using the following command:

git clone https://github.com/vatsalcshah/VoltStudy

Modify the build.gradle file (if needed):

After cloning, you might need to modify the build.gradle file to match older Gradle versions if you're having trouble with the app building. Check the official Android documentation or online resources for guidance on compatibility issues.

2. Set up Firebase:

• Create a Firebase project on the Firebase console (https://console.firebase.google.com/).

• In your Firebase project settings, add an Android app and provide your app's package name.

• Download the google-services.json file generated by Firebase and replace it in your Android project's app module directory.

3. Prepare the Firebase Realtime Database:

• Go to your Firebase Realtime Database and import the dummy_firebase_realtime_database.json file. This will populate your database with the initial data structure.

• Set the security rules for your Realtime Database by uploading the rules.txt file. This ensures data integrity and security.

Modify rules.txt & json based on your requirements & data

You can refer my file cloud_functions to deploy node.js functions of your Firestore Cloud Functions.

4. Configure In-App Billing:

• In the Google Play Console, set up in-app billing products for your app (if it offers premium features or content).

• Obtain your app's license key from the Google Play Console and add it to your Android project's configuration files.

• For testing purposes only, you can set the productID variable in CourseDetailActivity.java to android.test.purchased. This allows you to simulate purchases without actually charging the user's account. Remember to revert this change before releasing your app to production.

Pro Tip: Once you have completed the setup, use your code editor's global find and replace feature to quickly change any API links or endpoints to match your specific backend setup. This will streamline the customization process.

🔗 Database ER diagram

erDiagram
USER ||--o{ COMMENT : writes
USER ||--o{ RESULTS : achieves
USER ||--o{ COURSE : purchases
USER ||--o{ COURSE : likes
POST ||--o{ USER : authored_by
COMMENT ||--o{ POST : belongs_to
RESULTS ||--o{ COURSE : belongs_to

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