Hiready

AI-powered interview practice platform integrated with Presage Vitals Sensing.

This monorepo contains the Next.js frontend and the C++ Presage Vitals Engine for real-time physiological monitoring.

Features

• Real-Time Vitals: Contactless heart rate and breathing rate monitoring via webcam.
• Glassmorphism UI: Modern, responsive design with animated gradients.
• Remote Control: Start tracking sessions directly from the web UI.
• Privacy First: Processed locally on the device.

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🏗️ Project Structure

intervyou/
├── src/                    # Next.js Frontend
│   ├── app/                # App Router (Pages & APIs)
│   ├── components/         # React Components
│   └── ...
├── presage_quickstart/     # C++ Vitals Engine
│   ├── hello_vitals.cpp    # Main Application
│   ├── include/            # Headers (inc. MJPEG Streamer)
│   └── build/              # Compiled Binaries
└── ...

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🚀 Getting Started

You need to run both the C++ Engine (backend) and the Next.js App (frontend) simultaneously.

1. C++ Vitals Engine (Backend)

Prerequisites & Installation (Ubuntu/WSL):

# 1. Install Dependencies
sudo apt update
sudo apt install -y build-essential git lsb-release pkg-config curl gpg \
libcurl4-openssl-dev libssl-dev libv4l-dev libgles2-mesa-dev libunwind-dev \
libgoogle-glog-dev libatlas-base-dev libopencv-dev

# 2. Install CMake 3.27.0
curl -L -o cmake-3.27.0-linux-x86_64.sh https://github.com/Kitware/CMake/releases/download/v3.27.0/cmake-3.27.0-linux-x86_64.sh
chmod +x cmake-3.27.0-linux-x86_64.sh
sudo ./cmake-3.27.0-linux-x86_64.sh --skip-license --prefix=/usr/local

# 3. Setup Presage Repository
curl -s "https://presage-security.github.io/PPA/KEY.gpg" | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/presage-technologies.gpg >/dev/null
sudo curl -s --compressed -o /etc/apt/sources.list.d/presage-technologies.list "https://presage-security.github.io/PPA/presage-technologies.list"
sudo apt update

# 4. Force install and lock SDK version 2.0.4
sudo apt install -y libsmartspectra-dev=2.0.4 libphysiologyedge-dev=2.0.4
sudo apt-mark hold libsmartspectra-dev
sudo apt-mark hold libphysiologyedge-dev

Build & Run:

cd presage_quickstart
mkdir build && cd build
cmake ..
make

# Run the engine (Must be running for video feed to appear)
./hello_vitals + API_KEY

The engine will start an MJPEG stream on http://localhost:8080/video_feed and write realtime data to latest_vitals.json.

2. Next.js App (Frontend)

Open a new terminal window.

# Install dependencies
npm install

# Run the development server
npm run dev

Open http://localhost:3000 in your browser.

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🖥️ Usage

1. Launch: Ensure ./hello_vitals is running in the background.
2. Setup: Fill out the interview details on the home page.
3. Start: Click "Start Interview".
4. Monitor:
   • The camera feed will appear on the interview page.
   • Heart Rate and Breathing Rate will update in real-time below the video.
   • Colors indicate status: Green (Relaxed), Yellow (Normal), Red (Stress).
5. Record: Click "Start Session" to trigger recording. This signals the C++ engine to start logging data for the specific question.

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🛠️ Tech Stack

• Frontend: Next.js 14, React 18, Tailwind CSS, Framer Motion.
• Backend / AI: C++17, OpenCV 4, Presage SmartSpectra SDK.
• Communication: MJPEG Stream (Video), JSON Polling (Data), File-based IPC (Triggers).

License

MIT License