adds casbin and accounts

1 files changed, 89 insertions, 0 deletions

diff --git a/internal/goog/goog.go b/internal/goog/goog.go
new file mode 100644
index 0000000..5102a95
--- /dev/null
+++ b/internal/goog/goog.go
@@ -0,0 +1,89 @@
+package goog
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"golang.org/x/oauth2"
+)
+
+var (
+	ProfileURL    = "https://www.googleapis.com/oauth2/v3/userinfo"
+	ProfileKeyFmt = "goog:%s"
+)
+
+// GoogleProfile auth'd user profile
+// ProfileId, Email, Name, PictureURL
+type GoogleProfile struct {
+	ProfileID  string `json:"sub"`
+	Email      string `json:"email"`
+	Name       string `json:"name"`
+	PictureURL string `json:"picture"`
+}
+
+// ProfileKeys conform to ProfileKeys
+func (gp *GoogleProfile) ProfileKeyValues() (string, []string) {
+	return fmt.Sprintf(ProfileKeyFmt, gp.Email), []string{
+		"profile_id", gp.ProfileID,
+		"email", gp.Email,
+		"name", gp.Name,
+		"picture_url", gp.PictureURL,
+	}
+}
+
+type Servicer interface {
+	Config() *oauth2.Config
+	Profile(client *http.Client) (*GoogleProfile, *oauth2.Token, error)
+	UserClient(ctx context.Context, token *oauth2.Token) *http.Client
+}
+
+// NewService container for interacting with Google
+func NewService(o *oauth2.Config) Servicer {
+	return &Goog{
+		o,
+	}
+
+}
+
+type Goog struct {
+	oauthConfig *oauth2.Config
+}
+
+func (g *Goog) Config() *oauth2.Config {
+	return g.oauthConfig
+}
+
+// UserCient just calls oauth2.Client
+func (g *Goog) UserClient(ctx context.Context, token *oauth2.Token) *http.Client {
+	return g.oauthConfig.Client(ctx, token)
+}
+
+// Profile get profile from google
+func (g *Goog) Profile(client *http.Client) (*GoogleProfile, *oauth2.Token, error) {
+	client.Get(ProfileURL)
+	resp, err := client.Get(ProfileURL)
+	if err != nil {
+		return &GoogleProfile{}, &oauth2.Token{}, err
+	}
+	defer resp.Body.Close()
+	data, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return &GoogleProfile{}, &oauth2.Token{}, err
+	}
+	// Google Profile
+	gp := &GoogleProfile{}
+	err = json.Unmarshal(data, gp)
+	if err != nil {
+		return &GoogleProfile{}, &oauth2.Token{}, err
+	}
+	// Token
+	token := &oauth2.Token{}
+	err = json.Unmarshal(data, token)
+	if err != nil {
+		return &GoogleProfile{}, &oauth2.Token{}, err
+	}
+	return gp, token, nil
+}