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

Introduction

Hey there, fellow Go enthusiast! Ready to dive into the world of lexoffice API integration? You're in for a treat. We'll be using the awesome github.com/wolfgang-werner/lexoffice-go-api package to make our lives easier. Let's get cracking!

Prerequisites

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

• Go installed (I know, obvious, right?)
• A lexoffice API key (if you don't have one, go grab it!)
• Some basic Go and RESTful API knowledge (but hey, you're here, so I'm sure you're good to go)

Setting up the project

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

mkdir lexoffice-integration
cd lexoffice-integration
go mod init github.com/yourusername/lexoffice-integration
go get github.com/wolfgang-werner/lexoffice-go-api

Easy peasy! We're all set up and ready to roll.

Initializing the lexoffice client

Now, let's get that lexoffice client up and running:

package main

import (
    "fmt"
    "github.com/wolfgang-werner/lexoffice-go-api"
)

func main() {
    client := lexoffice.New("your-api-key-here")
    // We'll use this client for all our lexoffice shenanigans
}

Implementing core functionalities

Fetching contacts

Let's grab some contacts:

contacts, err := client.Contacts().List()
if err != nil {
    fmt.Printf("Oops! Couldn't fetch contacts: %v\n", err)
    return
}
fmt.Printf("Look at all these contacts: %+v\n", contacts)

Creating invoices

Time to make some money! Let's create an invoice:

invoice := &lexoffice.Invoice{
    // Fill in the invoice details here
}
createdInvoice, err := client.Invoices().Create(invoice)
if err != nil {
    fmt.Printf("Invoice creation failed: %v\n", err)
    return
}
fmt.Printf("Cha-ching! Invoice created: %+v\n", createdInvoice)

Retrieving document information

Need some document info? We've got you covered:

docInfo, err := client.Documents().Get("document-id-here")
if err != nil {
    fmt.Printf("Couldn't fetch document info: %v\n", err)
    return
}
fmt.Printf("Here's what we found: %+v\n", docInfo)

Error handling and best practices

Remember, the API has rate limits, so be nice:

time.Sleep(time.Second) // Give the API a breather between requests

And always check for errors. The package usually returns meaningful error messages, so make use of them!

Testing the integration

Testing is crucial, folks! Here's a quick example:

func TestFetchContacts(t *testing.T) {
    client := lexoffice.New("test-api-key")
    contacts, err := client.Contacts().List()
    assert.NoError(t, err)
    assert.NotEmpty(t, contacts)
}

For mocking API responses, consider using a library like github.com/jarcoal/httpmock.

Extending the integration

Feel like a lexoffice wizard now? Why not implement more endpoints or customize the client for your specific needs? The world is your oyster!

Conclusion

And there you have it! You've just built a lexoffice API integration in Go. Pretty cool, right? Remember, practice makes perfect, so keep experimenting and building awesome stuff.

For more details, check out the lexoffice-go-api documentation and the official lexoffice API docs.

Now go forth and code, you magnificent Go developer!