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

Introduction

Hey there, fellow Go enthusiast! Ready to dive into the world of Teachable API integration? You're in for a treat. We'll be building a robust integration that'll have you interacting with Teachable's platform like a pro. Let's get cracking!

Prerequisites

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

• Go installed (I know, obvious, right?)
• A Teachable account with API credentials (if you don't have this, hop over to Teachable and sort it out)

Setting up the project

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

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

Now, let's grab the dependencies we'll need:

go get github.com/go-resty/resty/v2
go get golang.org/x/oauth2

Authentication

Teachable uses OAuth 2.0, so let's set that up:

import (
    "golang.org/x/oauth2"
)

func getClient(ctx context.Context) *http.Client {
    conf := &oauth2.Config{
        ClientID:     "your-client-id",
        ClientSecret: "your-client-secret",
        Scopes:       []string{"read_courses", "write_users"},
        Endpoint: oauth2.Endpoint{
            AuthURL:  "https://teachable.com/oauth/authorize",
            TokenURL: "https://teachable.com/oauth/token",
        },
    }

    token := &oauth2.Token{
        AccessToken: "your-access-token",
    }

    return conf.Client(ctx, token)
}

Making API requests

Let's create a basic API client:

import "github.com/go-resty/resty/v2"

func newAPIClient(httpClient *http.Client) *resty.Client {
    return resty.NewWithClient(httpClient).
        SetBaseURL("https://api.teachable.com/v1").
        SetHeader("Accept", "application/json")
}

Implementing key Teachable API endpoints

Here's how you might fetch courses:

func getCourses(client *resty.Client) ([]Course, error) {
    var result struct {
        Courses []Course `json:"courses"`
    }
    _, err := client.R().
        SetResult(&result).
        Get("/courses")
    return result.Courses, err
}

Error handling and logging

Don't forget to handle those pesky errors:

import "log"

func handleError(err error) {
    if err != nil {
        log.Printf("Error occurred: %v", err)
        // Handle the error appropriately
    }
}

Testing the integration

Testing is crucial. Here's a simple test to get you started:

func TestGetCourses(t *testing.T) {
    client := newAPIClient(getClient(context.Background()))
    courses, err := getCourses(client)
    if err != nil {
        t.Fatalf("Failed to get courses: %v", err)
    }
    if len(courses) == 0 {
        t.Error("No courses returned")
    }
}

Optimizing performance

Want to speed things up? Try concurrent requests:

func getConcurrentData(client *resty.Client) (courses []Course, users []User) {
    var wg sync.WaitGroup
    wg.Add(2)

    go func() {
        defer wg.Done()
        courses, _ = getCourses(client)
    }()

    go func() {
        defer wg.Done()
        users, _ = getUsers(client)
    }()

    wg.Wait()
    return
}

Deployment considerations

Consider containerizing your app with Docker:

FROM golang:1.16

WORKDIR /app

COPY go.mod ./
COPY go.sum ./
RUN go mod download

COPY *.go ./

RUN go build -o /teachable-api-integration

CMD [ "/teachable-api-integration" ]

Conclusion

And there you have it! You've just built a solid Teachable API integration in Go. Remember, this is just the beginning. There's always room for improvement and expansion. Keep exploring the Teachable API docs, and don't be afraid to push the boundaries of what you can do with this integration.

Happy coding, Gopher!