AI Chatbot

Video Demo: https://youtu.be/96rdAvVNIuY

Project Overview

This project is a Command-Line Interface (CLI) AI Chatbot implemented in C++. It integrates the Gemini API for natural language generation and supports user authentication with registration and login features. Each user's chat history is stored and retrieved during subsequent logins, providing a personalized experience.

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Features

• User Authentication:
  • Register with a unique username and password (passwords are hashed using SHA256 for security).
  • Log in with your credentials to access your chat history.
• Chat History:
  • User-specific chat histories are stored in text files (e.g., history_<username>.txt) and persist across sessions.
  • View previous conversations upon login.
• AI-Powered Conversations:
  • Uses the Gemini API to generate intelligent and context-aware responses.
• Robust Error Handling:
  • Handles invalid inputs, API errors, and empty requests gracefully.

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Prerequisites

• C++ Compiler with support for C++11 or later
• OpenSSL Library (for password hashing)
• libcurl Library (for HTTP requests)
• nlohmann/json Library (for JSON processing)
• Gemini API Key

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Setup Instructions

1. Clone the Repository

git clone https://github.com/HtetAungKhant23/AIChatBot.git
cd AIChatBot

2. Install Dependencies

Make sure the following libraries are installed on your system:

• OpenSSL
• libcurl
• nlohmann/json

For Debian-based systems:

sudo apt-get install libssl-dev libcurl4-openssl-dev nlohmann-json3-dev

3. Set Up Your API Key

Replace the placeholder API key in the code with your actual Gemini API key:

string apiKey = "YOUR_API_KEY_HERE";

4. Compile the Project

Use g++ to compile the source code:

g++ aichatbot.cpp -o chatbot -lcurl -std=c++17 -lssl -lcrypto -I/usr/include/openssl

5. Run the Chatbot

Execute the program:

./chatbot

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How to Use

Register

1. Start the program and choose the Register option.
2. Enter a unique username and password.
3. Your credentials will be securely stored.

Login

1. Choose the Login option and enter your username and password.
2. View your previous chat history (if any).

Start Chatting

• Enter your messages, and the chatbot will respond using the Gemini API.
• Type exit to end the session.

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Error Handling

• Invalid Credentials: Displays a message for incorrect username or password.
• API Errors: Prints detailed error messages if the API fails to respond.