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Building a ChatGPT Replica with Fyne in Go

3 min readMay 20, 2024
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In this step-by-step guide, we will create a simple ChatGPT replica using the Fyne framework in Go. The application will have a graphical user interface (GUI) that allows users to input messages and receive responses from ChatGPT.

Prerequisites

Before we begin, ensure you have the following installed:

  • Go programming language
  • Fyne framework (go get fyne.io/fyne/v2)
  • The ollama and langchaingo packages for language model integration (go get github.com/tmc/langchaingo/llms, go get github.com/tmc/langchaingo/llms/ollama)

Step-by-Step Guide

Step 1: Initialize the Application

First, let’s initialize our Fyne application and create a new window.

Step 2: Create the RichText Widget for Conversation

We need a RichText widget to display the conversation between the user and ChatGPT.

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Step 3: Create the Entry Widget for User Input

We also need an Entry widget where the user can type their messages.

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Step 4: Define the sendMessage Function

The sendMessage function captures the user's message, updates the conversation, and calls the function to get the ChatGPT response.

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Step 5: Create the Send Button and Set Up the Enter Key Event

We create a button to send the message and set up the Enter key event to trigger the sendMessage function.

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Step 6: Organize Widgets in the Layout

We use containers to organize the widgets in the layout.

Step 7: Adjust the Window Size Dynamically

We adjust the window size based on the screen size and set up a dynamic width adjustment for the Enter key.

Step 8: Create the Response Function

We define the createResponse function to generate the ChatGPT response and update the conversation.

Conclusion

By following these steps, you have created a simple ChatGPT replica using the Fyne framework in Go. The application captures user input, sends it to ChatGPT, and displays the response in a RichText widget. This guide provides a basic framework that you can expand upon to create more sophisticated chat applications.

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Alexandre E Souza
Alexandre E Souza

Written by Alexandre E Souza

Microservice Evangelist | Go Lover | JS Lover

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