Step by Step Guide to Building a POWR Form Builder API Integration in Go

Aug 16, 2024 • 6 minute read

Hey there, fellow Go enthusiast! Ready to dive into the world of form building with POWR? Let's roll up our sleeves and get coding!

Introduction

POWR Form Builder API is a nifty tool that lets you create, manage, and integrate forms into your applications. Today, we're going to build an integration that'll make your life easier and your forms smarter. Trust me, it's going to be fun!

Prerequisites

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

Go installed (I know you do, but just checking!)
A POWR account with an API key (if you don't have one, go grab it real quick)
Your favorite code editor ready to rock

Setting up the project

Let's start by creating a project structure that'll make our future selves proud:

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

Authentication

First things first, let's get that authentication sorted:

package main

import (
    "net/http"
)

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

func addAuthHeader(req *http.Request) {
    req.Header.Add("Authorization", "Bearer "+apiKey)
}

Basic API Requests

Now, let's fetch some form data:

func getFormData(formID string) {
    url := "https://api.powr.com/v1/forms/" + formID
    req, _ := http.NewRequest("GET", url, nil)
    addAuthHeader(req)
    
    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        // Handle error
    }
    defer resp.Body.Close()
    
    // Process response
}

Creating a new form is just as easy:

func createForm(formData []byte) {
    url := "https://api.powr.com/v1/forms"
    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(formData))
    addAuthHeader(req)
    req.Header.Set("Content-Type", "application/json")
    
    // Send request and handle response
}

Handling Form Submissions

Let's set up a webhook to catch those form submissions:

func handleSubmission(w http.ResponseWriter, r *http.Request) {
    if r.Method != "POST" {
        http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
        return
    }
    
    // Parse and process the form data
    // Don't forget to validate the webhook signature!
}

func main() {
    http.HandleFunc("/webhook", handleSubmission)
    http.ListenAndServe(":8080", nil)
}

Error Handling and Logging

Always be prepared for the unexpected:

import (
    "log"
)

func logError(err error) {
    if err != nil {
        log.Printf("Error: %v", err)
    }
}

// Use it like this:
logError(err)

Testing the Integration

Testing is not just important, it's crucial. Here's a quick example:

func TestGetFormData(t *testing.T) {
    formID := "test-form-id"
    data := getFormData(formID)
    if data == nil {
        t.Errorf("Expected form data, got nil")
    }
}

Optimizations and Best Practices

Remember to implement rate limiting to be a good API citizen:

import (
    "golang.org/x/time/rate"
)

var limiter = rate.NewLimiter(rate.Limit(10), 1) // 10 requests per second

func rateLimitedRequest(req *http.Request) (*http.Response, error) {
    if err := limiter.Wait(context.Background()); err != nil {
        return nil, err
    }
    return http.DefaultClient.Do(req)
}

Conclusion

And there you have it! You've just built a solid foundation for your POWR Form Builder API integration. Remember, this is just the beginning. There's always room to expand and improve your integration.

Keep exploring the API, try out different endpoints, and most importantly, have fun building awesome forms!

Resources

Now go forth and create some amazing forms! Happy coding! 🚀