refactor(api): restructure bolt package (#1981)

* refactor(api): bolt package refactor

* refactor(api): refactor bolt package

api/bolt/user/user.go

@@ -0,0 +1,149 @@
+package user
+
+import (
+	"github.com/portainer/portainer"
+	"github.com/portainer/portainer/bolt/internal"
+
+	"github.com/boltdb/bolt"
+)
+
+const (
+	// BucketName represents the name of the bucket where this service stores data.
+	BucketName = "users"
+)
+
+// Service represents a service for managing endpoint data.
+type Service struct {
+	db *bolt.DB
+}
+
+// NewService creates a new instance of a service.
+func NewService(db *bolt.DB) (*Service, error) {
+	err := internal.CreateBucket(db, BucketName)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Service{
+		db: db,
+	}, nil
+}
+
+// User returns a user by ID
+func (service *Service) User(ID portainer.UserID) (*portainer.User, error) {
+	var user portainer.User
+	identifier := internal.Itob(int(ID))
+
+	err := internal.GetObject(service.db, BucketName, identifier, &user)
+	if err != nil {
+		return nil, err
+	}
+
+	return &user, nil
+}
+
+// UserByUsername returns a user by username.
+func (service *Service) UserByUsername(username string) (*portainer.User, error) {
+	var user *portainer.User
+
+	err := service.db.View(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(BucketName))
+		cursor := bucket.Cursor()
+
+		for k, v := cursor.First(); k != nil; k, v = cursor.Next() {
+			var u portainer.User
+			err := internal.UnmarshalObject(v, &u)
+			if err != nil {
+				return err
+			}
+
+			if u.Username == username {
+				user = &u
+				break
+			}
+		}
+
+		if user == nil {
+			return portainer.ErrObjectNotFound
+		}
+		return nil
+	})
+
+	return user, err
+}
+
+// Users return an array containing all the users.
+func (service *Service) Users() ([]portainer.User, error) {
+	var users = make([]portainer.User, 0)
+
+	err := service.db.View(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(BucketName))
+
+		cursor := bucket.Cursor()
+		for k, v := cursor.First(); k != nil; k, v = cursor.Next() {
+			var user portainer.User
+			err := internal.UnmarshalObject(v, &user)
+			if err != nil {
+				return err
+			}
+			users = append(users, user)
+		}
+
+		return nil
+	})
+
+	return users, err
+}
+
+// UsersByRole return an array containing all the users with the specified role.
+func (service *Service) UsersByRole(role portainer.UserRole) ([]portainer.User, error) {
+	var users = make([]portainer.User, 0)
+	err := service.db.View(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(BucketName))
+
+		cursor := bucket.Cursor()
+		for k, v := cursor.First(); k != nil; k, v = cursor.Next() {
+			var user portainer.User
+			err := internal.UnmarshalObject(v, &user)
+			if err != nil {
+				return err
+			}
+
+			if user.Role == role {
+				users = append(users, user)
+			}
+		}
+		return nil
+	})
+
+	return users, err
+}
+
+// UpdateUser saves a user.
+func (service *Service) UpdateUser(ID portainer.UserID, user *portainer.User) error {
+	identifier := internal.Itob(int(ID))
+	return internal.UpdateObject(service.db, BucketName, identifier, user)
+}
+
+// CreateUser creates a new user.
+func (service *Service) CreateUser(user *portainer.User) error {
+	return service.db.Update(func(tx *bolt.Tx) error {
+		bucket := tx.Bucket([]byte(BucketName))
+
+		id, _ := bucket.NextSequence()
+		user.ID = portainer.UserID(id)
+
+		data, err := internal.MarshalObject(user)
+		if err != nil {
+			return err
+		}
+
+		return bucket.Put(internal.Itob(int(user.ID)), data)
+	})
+}
+
+// DeleteUser deletes a user.
+func (service *Service) DeleteUser(ID portainer.UserID) error {
+	identifier := internal.Itob(int(ID))
+	return internal.DeleteObject(service.db, BucketName, identifier)
+}