auth0/go-auth0

package main

import (
	"context"
	"log"

	"github.com/auth0/go-auth0/authentication"
	"github.com/auth0/go-auth0/authentication/database"
	"github.com/auth0/go-auth0/authentication/oauth"
)

func main() {
	// Get these from your Auth0 Application Dashboard.
	domain := "example.us.auth0.com"
	clientID := "EXAMPLE_16L9d34h0qe4NVE6SaHxZEid"
	clientSecret := "EXAMPLE_XSQGmnt8JdXs23407hrK6XXXXXXX"

	// Initialize a new client using a domain, client ID and client secret.
	authAPI, err := authentication.New(
		context.TODO(), // Replace with a Context that better suits your usage
		domain,
		authentication.WithClientID(clientID),
		authentication.WithClientSecret(clientSecret), // Optional depending on the grants used
	)
	if err != nil {
		log.Fatalf("failed to initialize the auth0 authentication API client: %+v", err)
	}

	// Now we can interact with the Auth0 Authentication API.
	// Sign up a user
	userData := database.SignupRequest{
		Connection: "Username-Password-Authentication",
		Username:   "mytestaccount",
		Password:   "mypassword",
		Email:      "[email protected]",
	}

	createdUser, err := authAPI.Database.Signup(context.Background(), userData)
	if err != nil {
		log.Fatalf("failed to sign user up: %+v", err)
	}

	// Login using OAuth grants
	tokenSet, err := authAPI.OAuth.LoginWithAuthCodeWithPKCE(context.Background(), oauth.LoginWithAuthCodeWithPKCERequest{
		Code:         "test-code",
		CodeVerifier: "test-code-verifier",
	}, oauth.IDTokenValidationOptions{})
	if err != nil {
		log.Fatalf("failed to retrieve tokens: %+v", err)
	}
}

package main

import (
	"context"
	"log"

	"github.com/auth0/go-auth0"
	"github.com/auth0/go-auth0/management"
)

func main() {
	// Get these from your Auth0 Application Dashboard.
	// The application needs to be a Machine To Machine authorized
	// to request access tokens for the Auth0 Management API,
	// with the desired permissions (scopes).
	domain := "example.auth0.com"
	clientID := "EXAMPLE_16L9d34h0qe4NVE6SaHxZEid"
	clientSecret := "EXAMPLE_XSQGmnt8JdXs23407hrK6XXXXXXX"

	// Initialize a new client using a domain, client ID and client secret.
	// Alternatively you can specify an access token:
	// `management.WithStaticToken("token")`
	auth0API, err := management.New(
		domain,
		management.WithClientCredentials(context.TODO(), clientID, clientSecret),  // Replace with a Context that better suits your usage
	)
	if err != nil {
		log.Fatalf("failed to initialize the auth0 management API client: %+v", err)
	}

	// Now we can interact with the Auth0 Management API.
	// Example: Creating a new client.
	client := &management.Client{
		Name:        auth0.String("My Client"),
		Description: auth0.String("Client created through the Go SDK"),
	}

	// The passed in client will get hydrated with the response.
	// This means that after this request, we will have access
	// to the client ID on the same client object.
	err = auth0API.Client.Create(context.TODO(), client)  // Replace with a Context that better suits your usage
	if err != nil {
		log.Fatalf("failed to create a new client: %+v", err)
	}

	// Make use of the getter functions to safely access
	// fields without causing a panic due nil pointers.
	log.Printf(
		"Created an auth0 client successfully. The ID is: %q",
		client.GetClientID(),
	)
}