wip: vfs implementation

apps/backend/internal/virtualfs/node.go

@@ -0,0 +1,49 @@
+package virtualfs
+
+import (
+	"time"
+
+	"github.com/get-drexa/drexa/internal/blob"
+	"github.com/google/uuid"
+	"github.com/uptrace/bun"
+)
+
+type NodeKind string
+
+const (
+	NodeKindFile      NodeKind = "file"
+	NodeKindDirectory NodeKind = "directory"
+)
+
+type NodeStatus string
+
+const (
+	NodeStatusPending NodeStatus = "pending"
+	NodeStatusReady   NodeStatus = "ready"
+)
+
+type Node struct {
+	bun.BaseModel `bun:"vfs_nodes"`
+
+	ID       uuid.UUID  `bun:",pk,type:uuid"`
+	PublicID string     `bun:"public_id,notnull"`
+	UserID   uuid.UUID  `bun:"user_id,notnull"`
+	ParentID uuid.UUID  `bun:"parent_id,notnull"`
+	Kind     NodeKind   `bun:"kind,notnull"`
+	Status   NodeStatus `bun:"status,notnull"`
+	Name     string     `bun:"name,notnull"`
+
+	BlobKey  blob.Key `bun:"blob_key"`
+	Size     int64    `bun:"size"`
+	MimeType string   `bun:"mime_type"`
+
+	CreatedAt time.Time `bun:"created_at,notnull"`
+	UpdatedAt time.Time `bun:"updated_at,notnull"`
+	DeletedAt time.Time `bun:"deleted_at"`
+}
+
+// IsAccessible returns true if the node can be accessed.
+// If the node is not ready or if it is soft deleted, it cannot be accessed.
+func (n *Node) IsAccessible() bool {
+	return n.DeletedAt.IsZero() && n.Status == NodeStatusReady
+}