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

Aug 15, 2024 • 5 minute read

Introduction

Hey there, fellow Go enthusiast! Ready to dive into the world of Demio API integration? You're in for a treat. We'll be building a sleek, efficient integration that'll have you managing events and attendees like a pro. Let's get cracking!

Prerequisites

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

Go installed (I know, obvious, right?)
Demio API credentials (grab 'em from your Demio dashboard)
Your favorite code editor

Oh, and we'll be using these Go packages:

"net/http"
"encoding/json"
"github.com/gorilla/mux"

Setting up the project

First things first, let's set up our project:

mkdir demio-api-integration
cd demio-api-integration
go mod init github.com/yourusername/demio-api-integration

Easy peasy! Now we've got our project structure ready to rock.

Authentication

Alright, let's get that authentication sorted. We'll create a reusable client with your API key:

type DemioClient struct {
    APIKey string
    BaseURL string
    HTTPClient *http.Client
}

func NewDemioClient(apiKey string) *DemioClient {
    return &DemioClient{
        APIKey: apiKey,
        BaseURL: "https://my.demio.com/api/v1",
        HTTPClient: &http.Client{},
    }
}

Basic API Requests

Time to make some requests! Let's start with a GET request to fetch events:

func (c *DemioClient) GetEvents() ([]Event, error) {
    req, err := http.NewRequest("GET", c.BaseURL+"/events", nil)
    if err != nil {
        return nil, err
    }
    
    req.Header.Set("Api-Key", c.APIKey)
    
    resp, err := c.HTTPClient.Do(req)
    if err != nil {
        return nil, err
    }
    defer resp.Body.Close()
    
    var events []Event
    err = json.NewDecoder(resp.Body).Decode(&events)
    return events, err
}

Handling Responses

Now, let's handle those responses like a champ:

type APIError struct {
    Code    int    `json:"code"`
    Message string `json:"message"`
}

func (c *DemioClient) decodeResponse(resp *http.Response, v interface{}) error {
    if resp.StatusCode != http.StatusOK {
        var apiErr APIError
        if err := json.NewDecoder(resp.Body).Decode(&apiErr); err != nil {
            return err
        }
        return fmt.Errorf("API error: %s (code: %d)", apiErr.Message, apiErr.Code)
    }
    
    return json.NewDecoder(resp.Body).Decode(v)
}

Advanced Features

Ready to level up? Let's implement webhook handling:

func handleWebhook(w http.ResponseWriter, r *http.Request) {
    var payload WebhookPayload
    if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
        http.Error(w, err.Error(), http.StatusBadRequest)
        return
    }
    
    // Process the webhook payload
    fmt.Printf("Received webhook: %+v\n", payload)
    
    w.WriteHeader(http.StatusOK)
}

Testing

Don't forget to test your code! Here's a quick example:

func TestGetEvents(t *testing.T) {
    client := NewDemioClient("your-api-key")
    events, err := client.GetEvents()
    if err != nil {
        t.Fatalf("Error getting events: %v", err)
    }
    if len(events) == 0 {
        t.Fatal("No events returned")
    }
}

Best Practices

Remember to implement rate limiting and caching to keep your integration smooth and efficient. You could use a package like golang.org/x/time/rate for rate limiting.

Conclusion

And there you have it! You've just built a rock-solid Demio API integration in Go. From authentication to webhooks, you're now equipped to manage events like a boss. Keep exploring the API, and don't be afraid to push the boundaries of what you can do with it.

Resources

Now go forth and code, you magnificent Go developer!