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

Introduction

Hey there, fellow code enthusiasts! Ready to dive into the world of fitness data? Let's talk Strava API. It's a goldmine of athletic information, and we're going to tap into it using Go. We'll be using the strava-api package, which makes our lives a whole lot easier. Buckle up!

Prerequisites

Before we hit the ground running, make sure you've got:

• Go installed (you're a pro, so I'm sure you do)
• Strava API credentials (if you don't, hop over to Strava's developer portal)
• The strava-api package (go get github.com/strava/go.strava)

Got all that? Great! Let's build something cool.

Setting up the project

First things first, let's create a new Go project:

mkdir strava-integration && cd strava-integration
go mod init strava-integration

Now, let's import the packages we need:

import (
    "fmt"
    "github.com/strava/go.strava"
)

Authentication

Alright, time for the fun part - authentication. Strava uses OAuth 2.0, so we need to implement that flow. Here's a quick snippet to get you started:

config := &oauth2.Config{
    ClientID:     "your_client_id",
    ClientSecret: "your_client_secret",
    Endpoint:     strava.OAuthEndpoint,
    RedirectURL:  "your_redirect_url",
    Scopes:       []string{strava.ScopeActivityRead, strava.ScopeActivityWrite},
}

// Implement the OAuth flow here

Basic API Requests

Now that we're authenticated, let's fetch some data! Here's how you can get athlete information:

client := strava.NewClient(accessToken)
athlete, err := strava.NewCurrentAthleteService(client).Get().Do()
if err != nil {
    // Handle error
}
fmt.Printf("Hello, %s!\n", athlete.FirstName)

Advanced API Usage

Feeling adventurous? Let's upload an activity:

upload, err := strava.NewUploadsService(client).
    Create(strava.FileDataTypes.FIT, "activity.fit", "My awesome ride!").
    Do()
if err != nil {
    // Handle error
}
fmt.Printf("Upload ID: %d\n", upload.Id)

Error Handling and Rate Limiting

Remember, we're good API citizens. Always handle your errors and respect rate limits:

if err, ok := err.(*strava.Error); ok {
    switch err.Code {
    case strava.ErrorRateLimitExceeded:
        // Wait and retry
    default:
        // Handle other errors
    }
}

Testing

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

func TestAthleteService_Get(t *testing.T) {
    client := strava.NewClient("fake_token")
    athlete, err := strava.NewCurrentAthleteService(client).Get().Do()
    assert.NoError(t, err)
    assert.NotNil(t, athlete)
}

Best Practices

To keep your app speedy and Strava happy:

1. Cache frequently accessed data
2. Use goroutines for concurrent API calls (but mind the rate limits!)
3. Process data in chunks for large datasets

Conclusion

And there you have it! You're now equipped to build some seriously cool Strava integrations. Remember, this is just the tip of the iceberg. There's so much more you can do with the Strava API, so keep exploring and building awesome things!

Happy coding, and may your KOMs be many! 🚴‍♂️💨