Step by Step Guide to Building a Salesmsg API Integration in Go

Introduction

Hey there, fellow Go enthusiast! Ready to supercharge your messaging game? Let's dive into building a Salesmsg API integration. Salesmsg is a powerful platform for business texting, and we're about to harness its potential with some slick Go code.

Prerequisites

Before we jump in, make sure you've got:

• Go installed (you're a pro, so I'm sure you do)
• Salesmsg API credentials (if you don't have 'em, grab 'em quick)
• Your favorite code editor at the ready

Setting up the project

Let's kick things off:

mkdir salesmsg-integration
cd salesmsg-integration
go mod init salesmsg-integration

We'll need a few packages. Let's grab them:

go get github.com/go-resty/resty/v2

Authentication

Alright, time to get cozy with the Salesmsg API. First, snag your API key from your Salesmsg dashboard. We'll use it like this:

package main

import (
    "github.com/go-resty/resty/v2"
)

const apiKey = "your_api_key_here"
const baseURL = "https://api.salesmsg.com/v1"

func main() {
    client := resty.New()
    client.SetHeader("Authorization", "Bearer "+apiKey)
    client.SetHostURL(baseURL)
}

Making API requests

Now we're cooking! Let's make some requests:

// GET request
resp, err := client.R().
    SetQueryParam("limit", "10").
    Get("/conversations")

// POST request
resp, err := client.R().
    SetBody(map[string]interface{}{
        "to": "+1234567890",
        "body": "Hello from Go!",
    }).
    Post("/messages")

Implementing key Salesmsg features

Sending messages

func sendMessage(client *resty.Client, to, body string) error {
    _, err := client.R().
        SetBody(map[string]interface{}{
            "to": to,
            "body": body,
        }).
        Post("/messages")
    return err
}

Retrieving conversations

func getConversations(client *resty.Client, limit int) ([]byte, error) {
    resp, err := client.R().
        SetQueryParam("limit", fmt.Sprintf("%d", limit)).
        Get("/conversations")
    return resp.Body(), err
}

Error handling and best practices

Always check for errors and respect rate limits:

resp, err := client.R().Get("/conversations")
if err != nil {
    log.Printf("Error: %v", err)
    return
}

if resp.StatusCode() == 429 {
    log.Println("Rate limit exceeded. Backing off...")
    time.Sleep(5 * time.Second)
    // Retry the request
}

Testing the integration

Unit testing is your friend:

func TestSendMessage(t *testing.T) {
    client := resty.New().SetHostURL("http://mock-api.test")
    err := sendMessage(client, "+1234567890", "Test message")
    if err != nil {
        t.Errorf("Expected no error, got %v", err)
    }
}

Deployment considerations

Keep your API key safe:

apiKey := os.Getenv("SALESMSG_API_KEY")
if apiKey == "" {
    log.Fatal("SALESMSG_API_KEY environment variable not set")
}

Conclusion

And there you have it! You've just built a solid Salesmsg API integration in Go. Remember, this is just the beginning. Explore the API docs, experiment with different endpoints, and keep building awesome stuff!

Happy coding, Gopher!