[#276] added support for linking external auths by provider id

daos/external_auth.go

@@ -0,0 +1,99 @@
+package daos
+
+import (
+	"errors"
+
+	"github.com/pocketbase/dbx"
+	"github.com/pocketbase/pocketbase/models"
+)
+
+// ExternalAuthQuery returns a new ExternalAuth select query.
+func (dao *Dao) ExternalAuthQuery() *dbx.SelectQuery {
+	return dao.ModelQuery(&models.ExternalAuth{})
+}
+
+/// FindAllExternalAuthsByUserId returns all ExternalAuth models
+/// linked to the provided userId.
+func (dao *Dao) FindAllExternalAuthsByUserId(userId string) ([]*models.ExternalAuth, error) {
+	auths := []*models.ExternalAuth{}
+
+	err := dao.ExternalAuthQuery().
+		AndWhere(dbx.HashExp{"userId": userId}).
+		OrderBy("created ASC").
+		All(&auths)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return auths, nil
+}
+
+// FindExternalAuthByProvider returns the first available
+// ExternalAuth model for the specified provider and providerId.
+func (dao *Dao) FindExternalAuthByProvider(provider, providerId string) (*models.ExternalAuth, error) {
+	model := &models.ExternalAuth{}
+
+	err := dao.ExternalAuthQuery().
+		AndWhere(dbx.HashExp{
+			"provider":   provider,
+			"providerId": providerId,
+		}).
+		Limit(1).
+		One(model)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return model, nil
+}
+
+// FindExternalAuthByUserIdAndProvider returns the first available
+// ExternalAuth model for the specified userId and provider.
+func (dao *Dao) FindExternalAuthByUserIdAndProvider(userId, provider string) (*models.ExternalAuth, error) {
+	model := &models.ExternalAuth{}
+
+	err := dao.ExternalAuthQuery().
+		AndWhere(dbx.HashExp{
+			"userId":   userId,
+			"provider": provider,
+		}).
+		Limit(1).
+		One(model)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return model, nil
+}
+
+// SaveExternalAuth upserts the provided ExternalAuth model.
+func (dao *Dao) SaveExternalAuth(model *models.ExternalAuth) error {
+	return dao.Save(model)
+}
+
+// DeleteExternalAuth deletes the provided ExternalAuth model.
+//
+// The delete may fail if the linked user doesn't have an email and
+// there are no other linked ExternalAuth models available.
+func (dao *Dao) DeleteExternalAuth(model *models.ExternalAuth) error {
+	user, err := dao.FindUserById(model.UserId)
+	if err != nil {
+		return err
+	}
+
+	if user.Email == "" {
+		allExternalAuths, err := dao.FindAllExternalAuthsByUserId(user.Id)
+		if err != nil {
+			return err
+		}
+
+		if len(allExternalAuths) <= 1 {
+			return errors.New("You cannot delete the only available external auth relation because the user doesn't have an email set.")
+		}
+	}
+
+	return dao.Delete(model)
+}