A bit of testing with firebase

cmd/backend/firebase.go

@@ -0,0 +1,39 @@
+package backend
+
+import (
+	"context"
+
+	firebase "firebase.google.com/go/v4"
+	"firebase.google.com/go/v4/auth"
+	"google.golang.org/api/option"
+)
+
+type Client struct {
+	*auth.Client
+}
+
+func NewApp() (*Client, error) {
+	var err error
+	client := new(Client)
+
+	ctx := context.Background()
+	opt := option.WithCredentialsFile("path/to/serviceAccountKey.json")
+
+	app, err := firebase.NewApp(ctx, nil, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	client.Client, err = app.Auth(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return client, nil
+}
+
+func (c *Client) Verify(token string) (*auth.Token, error) {
+	ctx := context.Background()
+
+	return nil, nil
+}