aps.go

package aps

import (
	"net/http"
	"strings"

	"github.com/markbates/goth"
	"golang.org/x/oauth2"
)

const (
	authURL         string = "http://localhost:9096/authorize"
	tokenURL        string = "http://localhost:9096/token"
	endpointProfile string = "http://localhost:9096/userinfo"
)

// Provider is the implementation of `goth.Provider` for accessing APS.
type Provider struct {
	ClientKey   string
	Secret      string
	CallbackURL string
	config      *oauth2.Config
	prompt      oauth2.AuthCodeOption
}

// New - Please fill the code
func New(clientKey, secret, callbackURL string, scopes ...string) *Provider {
	p := &Provider{
		ClientKey:   clientKey,
		Secret:      secret,
		CallbackURL: callbackURL,
	}
	p.config = createConfig(p, scopes)

	return p
}
func (p *Provider) Client() *http.Client {
	return http.DefaultClient

}
func createConfig(p *Provider, scopes []string) *oauth2.Config {
	configuration := &oauth2.Config{
		ClientID:     p.ClientKey,
		ClientSecret: p.Secret,
		RedirectURL:  p.CallbackURL,
		Endpoint: oauth2.Endpoint{
			AuthURL:  authURL,
			TokenURL: tokenURL,
		},
		Scopes: []string{},
	}

	if len(scopes) > 0 {
		for _, scope := range scopes {
			configuration.Scopes = append(configuration.Scopes, scope)
		}
	}

	return configuration
}

// FetchUser - Please fill the code
func (p *Provider) FetchUser(session goth.Session) (goth.User, error) {
	s := session.(*Session)
	user := goth.User{
		AccessToken:  s.AccessToken,
		Provider:     p.Name(),
		RefreshToken: s.RefreshToken,
		ExpiresAt:    s.ExpiresAt,
	}
	req, err := http.NewRequest("GET", endpointProfile, nil)
	req.Header.Set("Authorization", "Bearer "+s.AccessToken)
	resp, err := p.Client().Do(req)
	if err != nil {
		if resp != nil {
			resp.Body.Close()
		}
		return user, err
	}
	defer resp.Body.Close()

	return user, err
}

// RefreshToken - Please fill the code
func (p *Provider) RefreshToken(refreshToken string) (*oauth2.Token, error) {
	token := &oauth2.Token{RefreshToken: refreshToken}
	ts := p.config.TokenSource(oauth2.NoContext, token)
	newToken, err := ts.Token()
	if err != nil {
		return nil, err
	}
	return newToken, err
}

// RefreshTokenAvailable - Please fill the code
func (p *Provider) RefreshTokenAvailable() bool {
	return true
}

// Name is the name used to retrieve this provider later.
func (p *Provider) Name() string {
	return "aps"
}

// Debug is a no-op for the APS package.
func (p *Provider) Debug(debug bool) {}

// BeginAuth - Please fill the code
func (p *Provider) BeginAuth(state string) (goth.Session, error) {
	var opts []oauth2.AuthCodeOption
	if p.prompt != nil {
		opts = append(opts, p.prompt)
	}
	url := p.config.AuthCodeURL(state, opts...)
	session := &Session{
		AuthURL: url,
	}
	return session, nil
}

// SetPrompt - Please fill the code
func (p *Provider) SetPrompt(prompt ...string) {
	if len(prompt) == 0 {
		return
	}
	p.prompt = oauth2.SetAuthURLParam("prompt", strings.Join(prompt, " "))
}