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

Aug 18, 2024 • 6 minute read

Introduction

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

Prerequisites

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

Go installed (I know, obvious, right?)
A TeamUp API key (grab one from your TeamUp account)
Your favorite code editor at the ready

Setting up the project

First things first, let's get our project structure sorted:

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

Easy peasy! Now we're ready to rock and roll.

Authentication

TeamUp uses API key authentication. Let's set that up:

const apiKey = "your-api-key-here"

func getAuthHeader() map[string]string {
    return map[string]string{
        "Teamup-Token": apiKey,
    }
}

Pro tip: In a real-world scenario, you'd want to keep that API key safe and sound in an environment variable.

Making API requests

Time to create our HTTP client:

import (
    "net/http"
    "time"
)

var client = &http.Client{
    Timeout: time.Second * 10,
}

func makeRequest(method, url string, body io.Reader) (*http.Response, error) {
    req, err := http.NewRequest(method, url, body)
    if err != nil {
        return nil, err
    }
    
    for k, v := range getAuthHeader() {
        req.Header.Set(k, v)
    }
    
    return client.Do(req)
}

Implementing core functionalities

Let's tackle the bread and butter of our integration:

Fetching calendars

func getCalendars() ([]Calendar, error) {
    resp, err := makeRequest("GET", "https://api.teamup.com/calendars", nil)
    if err != nil {
        return nil, err
    }
    defer resp.Body.Close()
    
    // Parse response and return calendars
}

Creating events

func createEvent(calendarID string, event Event) error {
    body, _ := json.Marshal(event)
    resp, err := makeRequest("POST", fmt.Sprintf("https://api.teamup.com/%s/events", calendarID), bytes.NewBuffer(body))
    if err != nil {
        return err
    }
    defer resp.Body.Close()
    
    // Handle response
}

You get the idea - update and delete would follow a similar pattern. Easy as pie!

Error handling and response parsing

Don't forget to handle those pesky errors and parse responses:

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

func handleResponse(resp *http.Response) error {
    if resp.StatusCode >= 400 {
        var apiError APIError
        json.NewDecoder(resp.Body).Decode(&apiError)
        return fmt.Errorf("API error: %s", apiError.Message)
    }
    return nil
}

Rate limiting and optimization

TeamUp's got your back with rate limiting info in the response headers. Let's use it:

func handleRateLimit(resp *http.Response) {
    if limit := resp.Header.Get("X-Rate-Limit-Remaining"); limit != "" {
        remaining, _ := strconv.Atoi(limit)
        if remaining < 10 {
            time.Sleep(time.Second)
        }
    }
}

Testing the integration

You know the drill - unit tests and integration tests are your friends. Here's a quick example:

func TestGetCalendars(t *testing.T) {
    calendars, err := getCalendars()
    assert.NoError(t, err)
    assert.NotEmpty(t, calendars)
}

Best practices and tips

Log errors like your life depends on it (it kinda does)
Keep that API key secret, keep it safe
Use meaningful error messages - your future self will thank you

Conclusion

And there you have it! You've just built a rock-solid TeamUp API integration in Go. Pat yourself on the back - you've earned it. Remember, this is just the beginning. There's always room for improvement and expansion. Keep coding, keep learning, and most importantly, have fun with it!

Resources

Now go forth and integrate! Your calendars await their Go-powered future.