Seiri - AI Cloud File Manager

A full-stack personal cloud storage system featuring AI-driven organization and Enterprise-grade architecture.

Tech Stack

• Backend: NestJS
• Frontend: Angular
• Database: PostgreSQL + TypeORM
• Cloud & AI: (AWS S3), AI API

Design Principles

• Direct-to-S3 Uploads: Using S3 Pre-signed URLs to offload file traffic from the server to the cloud.
• Hybrid Schema: Relational SQL for structure combined with JSONB for flexible, AI-generated metadata and tags.
• Tree Architecture: Efficient hierarchical folder management using TypeORM Tree Entities.

Roadmap & Implementation Plan

1. Data Layer & Schema Design

• Define Core Entities (FileSystemItem, FileMetadata, User).
• Establish Database Relationships and Tree Structure.

2. Backend Foundation (NestJS)

• Core Infrastructure: Logging, Migrations, Global Exceptions Filter, Validation Pipes, ESLint, and Swagger API Documentation.

• DTOs & Interfaces: Defining strict data contracts for all requests and responses.

• Authentication: Secure user registration and JWT-based login.

• API Skeleton: Building Controllers and Services with Mock functions for file uploads, retrieval, and management.

3. Frontend Development (Angular)

• Setting up the Angular workspace and core services.

• Implementing the UI for file browsing and upload tracking.

4. Cloud Integration (AWS S3(?))

• Pre-signed URLs: Implementing secure, direct-to-S3 upload and download flows.

• Cloud Security: Configuring S3 CORS policies and IAM permissions.

• Automation: Setting up S3 Lifecycle Rules for efficient storage management.

5. Intelligence Layer (AI Integration)

• Background Processing: Integrating AI models for content analysis.

• Polling Mechanism: Implementing a client-side polling system to track AI processing status.

• Typed AI Responses: Mapping AI outputs to structured Interfaces for consistent data storage in JSONB.