More API progress

This time mainly helper functions for converting an account and
associated types into their API representation

storage/userInfoFields.go

@@ -20,3 +20,34 @@ type UserInfoField struct {
 }
 
 // TODO: Add functions to store, load, update and delete these
+
+func (s *Storage) FindUserFieldById(id uint) (*UserInfoField, error) {
+	entry := UserInfoField{}
+	err := s.db.First(&entry, id).Error
+	switch err {
+	case nil:
+		return &entry, nil
+	case gorm.ErrRecordNotFound:
+		return nil, ErrEntryNotFound
+	default:
+		return nil, err
+	}
+}
+
+func (s *Storage) FindMultipleUserFieldsById(ids []uint) ([]UserInfoField, error) {
+	entries := []UserInfoField{}
+	err := s.db.Where(ids).Find(&entries).Error
+	switch err {
+	case gorm.ErrRecordNotFound:
+		return nil, ErrEntryNotFound
+	case nil:
+		return entries, nil
+	default:
+		return nil, err
+	}
+}
+
+func (s *Storage) AddNewUserField(name, value, belongsToId string) (*UserInfoField, error) {
+	// TODO: Implement me
+	panic("Not implemented")
+}