initial commit

internal/pkg/oauth/google/client.go

@@ -0,0 +1,77 @@
+package google
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+
+	"base/internal/pkg/oauth/types"
+)
+
+type client struct {
+	oauthConfig *oauth2.Config
+}
+
+func New(config oauth2.Config) types.Oauth {
+	oauthConfig := &oauth2.Config{
+		ClientID:     config.ClientID,
+		ClientSecret: config.ClientSecret,
+		Endpoint:     google.Endpoint,
+		RedirectURL:  config.RedirectURL,
+		Scopes:       config.Scopes,
+	}
+	return &client{oauthConfig: oauthConfig}
+}
+
+func (g client) GetConsentAuthUrl(ctx context.Context, state string) string {
+	return g.oauthConfig.AuthCodeURL(state, oauth2.AccessTypeOffline)
+}
+
+func (g client) ExchangeCodeWithToken(ctx context.Context, code string) (*types.Token, error) {
+	exchange, err := g.oauthConfig.Exchange(ctx, code, oauth2.AccessTypeOffline)
+	if err != nil {
+		return nil, err
+	}
+	token, err := g.oauthConfig.TokenSource(ctx, exchange).Token()
+	if err != nil {
+		return nil, err
+	}
+	return &types.Token{
+		AccessToken:  token.AccessToken,
+		TokenType:    token.TokenType,
+		RefreshToken: token.RefreshToken,
+		ExpiresIn:    token.ExpiresIn,
+	}, nil
+}
+
+func (g client) GetUserInfo(
+	ctx context.Context,
+	accessToken string,
+	refreshToken string,
+) (types.UserInfo, error) {
+	resp, err := g.oauthConfig.Client(
+		ctx,
+		&oauth2.Token{
+			AccessToken:  accessToken,
+			RefreshToken: refreshToken,
+		}).Get("https://www.googleapis.com/oauth2/v2/userinfo")
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	data, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	var user UserInfo
+
+	if err = json.Unmarshal(data, &user); err != nil {
+		return nil, err
+	}
+	return &user, err
+}

internal/pkg/oauth/google/user.go

@@ -0,0 +1,28 @@
+package google
+
+type UserInfo struct {
+	Id            string `json:"id"`
+	GEmail        string `json:"email"`
+	VerifiedEmail bool   `json:"verified_email"`
+	Name          string `json:"name"`
+	GivenName     string `json:"given_name"`
+	FamilyName    string `json:"family_name"`
+	Picture       string `json:"picture"`
+	Locale        string `json:"locale"`
+}
+
+func (u UserInfo) ID() string {
+	return u.Id
+}
+
+func (u UserInfo) Email() string {
+	return u.GEmail
+}
+
+func (u UserInfo) FirstName() string {
+	return u.Name
+}
+
+func (u UserInfo) LastName() string {
+	return u.Name
+}