dunkbing / tchat

A simple chatapp with Golang and Redis Pub/Sub

Terminal chat application

A simple chat application inside the terminal with Golang and Redis Pub/Sub.

How it works

How the data is stored:

• The chat data is stored as keys.
  • For each channel contents, the channel: is the prefix key, followed by the channel name.
  • For each message contents, the message: is the prefix key, followed by the channel-name and the message-data in json format.

How the data is accessed:

• Here is the sample code to access the channel's messages with Go Redis:

# Get the channel's messages
ctx := context.Background()  
iter := redis.Client.Scan(ctx, 0, fmt.Sprintf("%s%s*", messagePrefix, m.channel), 0).Iterator()  
var messages []string  
for iter.Next(ctx) {  
   rawMsg := iter.Val()  
   rawMsg = strings.Replace(rawMsg, fmt.Sprintf("%s%s:", messagePrefix, m.channel), "", 1)  
   message := Message{}  
   _ = json.Unmarshal([]byte(rawMsg), &message)
   messages = append(messages, formatMessage(message, m.senderStyle))  
}

How to run it locally?

Prerequisites

• Go - 1.18

Local installation

• Clone the repository with git clone command.
• Copy the .env.example file to a new .env file.
• Run the go build command.
• Run the ./tchat executable file.

Deployment

To make deploys work, you need to create free account on Redis Cloud(https://redis.info/try-free-dev-to)