Project Idea: Personal Data Locker API

Description:

Create an API called Personal Data Locker, a secure and decentralized platform for storing and retrieving personal files, notes, and encrypted information. The system ensures data integrity and high security without relying on third-party services like paid cloud storage or PostgreSQL.

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Core Features:

1. User Authentication and Authorization:

   • Implement JWT-based authentication.
   • Password hashing using bcrypt or another secure Go library.
   • User roles: Admin and Regular User.

2. Data Storage:

   • Store data as encrypted files or JSON-like structures in SQLite or BoltDB (a lightweight key-value store).
   • Each user has a separate namespace for their stored data.

3. File Upload and Download:

   • Allow users to upload small files (like PDFs, images, or text files) with metadata.
   • Use a secure folder structure on the server to organize files by user.
   • Implement rate-limiting for file uploads.

4. Data Encryption:

   • Encrypt sensitive files and notes using Go's crypto package before storage.
   • Ensure the encryption key is user-specific and never stored on the server.

5. Searchable Metadata:

   • Allow users to tag their data with searchable metadata (e.g., file type, creation date, tags).
   • Implement efficient search functionality.

6. Activity Logs:

   • Log user activities such as logins, uploads, and downloads into an activity log stored locally.

7. API Documentation:

   • Use Swagger or Postman to provide comprehensive API documentation.

8. Local Deployment:

   • Package the API for easy local deployment using Docker or a simple installation guide.

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Advanced Features (Optional):

1. WebSocket Notifications:

   • Real-time notifications for file upload/download activities.

2. Version Control:

   • Allow users to upload new versions of existing files, retaining previous versions for download.

3. Offline Sync:

   • Provide a CLI tool (also written in Go) to sync local files with the server.

4. Role-based Data Sharing:

   • Implement a feature where users can share specific files or data with other registered users.

5. Backup & Restore:

   • Allow users to export their data as encrypted zip files for backup.
   • Provide a restore endpoint for uploading backups.

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Skills Showcased:

1. API Design: RESTful API principles with clean and efficient routes.
2. Security: JWT, encryption, rate-limiting, and secure file storage practices.
3. Database Management: Using SQLite or BoltDB creatively for structured data storage.
4. Concurrency: Handle simultaneous requests effectively using Go routines.
5. Documentation: API usability and onboarding for developers.
6. Packaging and Deployment: Dockerize and deploy locally or on a low-resource server.

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Next Steps:

1. Define the Schema: Plan user models, file metadata structures, and database schema.
2. Choose Libraries:
   • SQLite: Use gorm or sqlx for database interaction.
   • JWT: github.com/golang-jwt/jwt/v4.
   • File encryption: crypto/aes.
   • CLI Sync Tool: cobra for CLI tool creation.
3. Implementation Plan:
   • Start with user authentication and database setup.
   • Build core CRUD functionality.
   • Implement encryption and file upload/download.
   • Add search and metadata tagging.

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Would you like me to help you with any specific aspect, like structuring the database, setting up a project skeleton, or designing the API endpoints? Packages used: "github.com/blacac3/go-rest-api/internal/api"
"golang.org/x/crypto/argon2" "github.com/go-playground/validator/v10" "github.com/stretchr/testify/assert" "github.com/mattn/go-sqlite3" "gorm.io/driver/postgres" "gorm.io/driver/sqlite" "gorm.io/gorm" "gorm.io/gorm/logger"