Step by Step Guide to Building a Basecamp 3 API Integration in Go

Hey there, fellow Go enthusiast! Ready to dive into the world of Basecamp 3 API integration? Let's roll up our sleeves and get coding!

Introduction

Basecamp 3 is a powerhouse for project management, and its API opens up a world of possibilities. We'll be using the basecamp3 package to make our lives easier. Trust me, it's a game-changer!

Prerequisites

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

• Go installed (I know you do, you rockstar!)
• A Basecamp 3 account (if not, go grab one)
• API credentials (we'll need these to make the magic happen)

Setting up the project

Let's kick things off:

mkdir basecamp3-integration
cd basecamp3-integration
go mod init basecamp3-integration
go get github.com/basecamp/basecamp3-api-go

Boom! You're all set.

Authenticating with Basecamp 3 API

Time to make friends with the API:

import "github.com/basecamp/basecamp3-api-go"

client := basecamp3.NewClient(nil)
client.AuthToken = "your-auth-token"

Pro tip: Keep that auth token safe!

Basic API operations

Let's get our hands dirty with some basic operations:

// Fetch projects
projects, _, err := client.Projects.List(accountID)

// Get to-do lists
todoLists, _, err := client.TodoLists.List(projectID)

// Create a new to-do item
newTodo := &basecamp3.TodoItem{Content: "Build awesome Go app"}
todo, _, err := client.TodoItems.Create(todoListID, newTodo)

Easy peasy, right?

Handling pagination

Basecamp's got your back with pagination. Here's how to handle it:

opt := &basecamp3.ListOptions{Page: 1, PerPage: 100}
for {
    projects, resp, err := client.Projects.List(accountID, opt)
    // Process projects...
    if resp.NextPage == 0 {
        break
    }
    opt.Page = resp.NextPage
}

Error handling and rate limiting

Be nice to the API, and it'll be nice to you:

if err != nil {
    if rateLimitErr, ok := err.(*basecamp3.RateLimitError); ok {
        time.Sleep(rateLimitErr.Rate.Reset.Sub(time.Now()))
        // Retry the request
    }
    // Handle other errors
}

Advanced usage

Want to level up? Try webhooks:

// Set up a webhook endpoint in your app
http.HandleFunc("/webhook", func(w http.ResponseWriter, r *http.Request) {
    // Process webhook payload
})

Testing the integration

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

func TestCreateTodo(t *testing.T) {
    client := basecamp3.NewClient(nil)
    client.BaseURL, _ = url.Parse("http://api.test.com")
    
    mux := http.NewServeMux()
    mux.HandleFunc("/todos", func(w http.ResponseWriter, r *http.Request) {
        fmt.Fprint(w, `{"id": 1, "content": "Test todo"}`)
    })
    
    server := httptest.NewServer(mux)
    defer server.Close()
    
    todo, _, err := client.TodoItems.Create(123, &basecamp3.TodoItem{Content: "Test todo"})
    
    assert.NoError(t, err)
    assert.Equal(t, "Test todo", todo.Content)
}

Best practices and optimization

• Cache frequently accessed data
• Use goroutines for concurrent API requests (but mind the rate limits!)

Conclusion

And there you have it! You're now equipped to build some seriously cool Basecamp 3 integrations with Go. Remember, the API is your oyster – so get out there and create something awesome!

Need more info? Check out the Basecamp 3 API docs and the basecamp3 package documentation.

Now go forth and code, you magnificent Go developer!