add Setup Account Helper function

helper/setup.go

@@ -0,0 +1,62 @@
+package helper
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/speatzle/go-passbolt/api"
+
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/gopenpgp/v2/helper"
+)
+
+// SetupAccount Setup a Account for a Invited User
+func SetupAccount(ctx context.Context, c *api.Client, inviteURL, password string) (string, error) {
+	split := strings.Split(inviteURL, "/")
+	if len(split) < 4 {
+		return "", fmt.Errorf("Invite URL does not have enough slashes")
+	}
+	userID := split[len(split)-2]
+	token := strings.TrimSuffix(split[len(split)-1], ".json")
+
+	install, err := c.SetupInstall(ctx, userID, token)
+	if err != nil {
+		return "", fmt.Errorf("Get Setup Install Data: %w", err)
+	}
+
+	keyName := install.Profile.FirstName + " " + install.Profile.LastName + " <" + install.Username + ">"
+
+	privateKey, err := helper.GenerateKey(keyName, install.Username, []byte(password), "rsa", 2048)
+	if err != nil {
+		return "", fmt.Errorf("Generating Private Key: %w", err)
+	}
+
+	key, err := crypto.NewKeyFromArmoredReader(strings.NewReader(privateKey))
+	if err != nil {
+		return "", fmt.Errorf("Reading Private Key: %w", err)
+	}
+
+	publicKey, err := key.GetArmoredPublicKey()
+	if err != nil {
+		return "", fmt.Errorf("Get Public Key: %w", err)
+	}
+
+	request := api.SetupCompleteRequest{
+		AuthenticationToken: api.AuthenticationToken{
+			Token: token,
+		},
+		User: api.User{
+			Locale: api.UserLocaleENUK,
+		},
+		GPGKey: api.GPGKey{
+			ArmoredKey: publicKey,
+		},
+	}
+
+	err = c.SetupComplete(ctx, userID, request)
+	if err != nil {
+		return "", fmt.Errorf("Setup Completion Failed: %w", err)
+	}
+	return privateKey, nil
+}