Zeming Wang - Academic Dashboard

Welcome back, {{ currentUser.username }}.

You are signed in as administrator. Every new tool you develop will automatically integrate as a module into this dashboard. You are signed in as viewer. You can browse content but cannot make changes.

Online

Exam Schedule Dashboard

Personalized exam preparation system for Sommersemester 2026. Includes progress tracking, ECTS analysis, and AI-driven study strategies.

Enter System

Dev Stage

Study Datahub API

Backend database interface (now live!). Stores exam states, notes, and uploaded files on your VPS — replacing LocalStorage for cross-device sync.

View API Architecture

Locked

AI Error Analysis Engine

Planned OpenAI/Gemini integration. Input exam questions to automatically generate explanations and archive knowledge points.

Coming Soon

Locked

GPA Tracker & Predictor

Dynamically calculates your current average based on passed subjects and predicts the target scores needed to achieve a 1.X average.

Coming Soon

System Logs

{{ log.time }} [{{ log.type }}] {{ log.message }}

Datahub API — Now Live

The backend is now running on your Ubuntu VPS with JWT authentication. All data is stored server-side with three-tier access control.

POST /api/login PUBLIC

Authenticates user, returns JWT token valid for 7 days.

// Request
{ "username": "ZemingWang", "password": "***" }

// Response
{ "token": "eyJ...", "user": { "role": "admin" } }

GET /api/states AUTH (any role)

Returns all exam states, notes, and flags. Both admin and viewer can read.

POST /api/states/:lv_nummer ADMIN ONLY

Updates exam status, materials, notes. Viewer accounts get 403.

POST /api/files/upload ADMIN ONLY

Uploads study materials (PDF, DOCX, images) — stored under /home/administrator/server/uploads/.

Live Tech Stack:
• Runtime: Node.js v20 + Express
• Database: SQLite (via better-sqlite3, WAL mode)
• Auth: JWT (HS256) + bcryptjs (12 rounds)
• Process Manager: PM2 with systemd boot integration
• File Storage: Local disk + metadata in DB