refactor(api): API overhaul (#392)

api/bolt/user_service.go

@@ -0,0 +1,56 @@
+package bolt
+
+import (
+	"github.com/portainer/portainer"
+	"github.com/portainer/portainer/bolt/internal"
+
+	"github.com/boltdb/bolt"
+)
+
+// UserService represents a service for managing users.
+type UserService struct {
+	store *Store
+}
+
+// User returns a user by username.
+func (service *UserService) User(username string) (*portainer.User, error) {
+	var data []byte
+	err := service.store.db.View(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(userBucketName))
+		value := bucket.Get([]byte(username))
+		if value == nil {
+			return portainer.ErrUserNotFound
+		}
+
+		data = make([]byte, len(value))
+		copy(data, value)
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var user portainer.User
+	err = internal.UnmarshalUser(data, &user)
+	if err != nil {
+		return nil, err
+	}
+	return &user, nil
+}
+
+// UpdateUser saves a user.
+func (service *UserService) UpdateUser(user *portainer.User) error {
+	data, err := internal.MarshalUser(user)
+	if err != nil {
+		return err
+	}
+
+	return service.store.db.Update(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(userBucketName))
+		err = bucket.Put([]byte(user.Username), data)
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+}