[WIP] change tree structure from dnd

typescript/Frontend/src/components/Context/GroupContextProvider.tsx

@@ -1,63 +1,47 @@
-import { NodeModel } from "@minoru/react-dnd-treeview";
 import { createContext, ReactNode, useCallback, useState } from "react";
 import axiosConfig from "../../config/axiosConfig";
+import { transformArrayToTree } from "../../util/group.util";
 import { I_Folder, I_Installation } from "../../util/types";
 
 interface GroupContextProviderProps {
+  currentType: string;
+  setCurrentType: (value: string) => void;
+  isMove: boolean;
+  setIsMove: (value: boolean) => void;
   data: (I_Folder | I_Installation)[];
   setData: (value: (I_Folder | I_Installation)[]) => void;
   fetchData: () => Promise<void>;
   loading: boolean;
   setLoading: (value: boolean) => void;
   getError: boolean;
-  tree: NodeModel<I_Folder | I_Installation>[];
-  setTree: (value: NodeModel<I_Folder | I_Installation>[]) => void;
-  currentType: string;
-  setCurrentType: (value: string) => void;
 }
 
 export const GroupContext = createContext<GroupContextProviderProps>({
+  currentType: "",
+  setCurrentType: () => {},
+  isMove: false,
+  setIsMove: () => {},
   data: [],
   setData: () => {},
   fetchData: () => Promise.resolve(),
   loading: false,
   setLoading: () => {},
   getError: false,
-  tree: [],
-  setTree: () => {},
-  currentType: "",
-  setCurrentType: () => {},
 });
 
-const getTreeData = (
-  data: (I_Folder | I_Installation)[]
-): NodeModel<I_Folder | I_Installation>[] => {
-  return data.map((element) => {
-    const isFolder = element.type === "Folder";
-    return {
-      id: isFolder ? element.id : "installation-" + element.id,
-      parent: element.parentId,
-      text: element.name,
-      droppable: isFolder,
-      data: element,
-    };
-  });
-};
-
 const GroupContextProvider = ({ children }: { children: ReactNode }) => {
+  const [currentType, setCurrentType] = useState("");
+  const [isMove, setIsMove] = useState(false);
   const [data, setData] = useState<(I_Folder | I_Installation)[]>([]);
   const [loading, setLoading] = useState(false);
   const [getError, setGetError] = useState(false);
-  const [tree, setTree] = useState<NodeModel<I_Folder | I_Installation>[]>([]);
-  const [currentType, setCurrentType] = useState("");
 
   const fetchData = useCallback(async () => {
     setLoading(true);
     return axiosConfig
       .get("/GetAllFoldersAndInstallations")
       .then((res) => {
-        setData(res.data);
+        setData(transformArrayToTree(res.data));
-        setTree(getTreeData(res.data));
         setLoading(false);
       })
       .catch((err) => {
@@ -69,16 +53,16 @@ const GroupContextProvider = ({ children }: { children: ReactNode }) => {
   return (
     <GroupContext.Provider
       value={{
+        currentType,
+        setCurrentType,
+        isMove,
+        setIsMove,
         data,
         setData,
         fetchData,
         loading,
         setLoading,
         getError,
-        tree,
-        setTree,
-        currentType,
-        setCurrentType,
       }}
     >
       {children}

typescript/Frontend/src/components/Groups/FolderForm.tsx

@@ -1,4 +1,4 @@
-import { Button, CircularProgress, Grid } from "@mui/material";
+import { Button, CircularProgress, Grid, InputLabel } from "@mui/material";
 import { useFormik } from "formik";
 import { useContext, useState } from "react";
 import { FormattedMessage, useIntl } from "react-intl";
@@ -7,6 +7,7 @@ import { I_Folder } from "../../util/types";
 import { GroupContext } from "../Context/GroupContextProvider";
 import InnovenergySnackbar from "../InnovenergySnackbar";
 import InnovenergyTextfield from "../Layout/InnovenergyTextfield";
+import MoveTree from "./Tree/MoveTree";
 
 interface I_CustomerFormProps {
   values: I_Folder;
@@ -20,23 +21,12 @@ const updateFolder = (data: I_Folder) => {
 const FolderForm = (props: I_CustomerFormProps) => {
   const { values, id } = props;
   const intl = useIntl();
+  const { isMove, setIsMove } = useContext(GroupContext);
 
   const [snackbarOpen, setSnackbarOpen] = useState(false);
   const [error, setError] = useState();
   const [loading, setLoading] = useState(false);
-
+  const [selectedParentId, setSelectedParentId] = useState<number>();
-  const { setTree, tree } = useContext(GroupContext);
-
-  const updateTree = (newValues: I_Folder) => {
-    const elementToUpdate = tree.find(
-      (element) => element.data?.id.toString() === id
-    );
-    if (elementToUpdate) {
-      elementToUpdate.data = newValues;
-      elementToUpdate.text = newValues.name;
-      setTree([...tree]);
-    }
-  };
 
   const formik = useFormik({
     initialValues: {
@@ -49,10 +39,10 @@ const FolderForm = (props: I_CustomerFormProps) => {
       updateFolder({
         ...values,
         ...formikValues,
+        parentId: selectedParentId ?? values.parentId,
         id: idAsNumber,
       })
         .then((res) => {
-          updateTree({ ...values, ...formikValues, id: idAsNumber });
           setSnackbarOpen(true);
           setLoading(false);
         })
@@ -86,6 +76,23 @@ const FolderForm = (props: I_CustomerFormProps) => {
         value={formik.values.information}
         handleChange={formik.handleChange}
       />
+      <Grid container direction="row" alignItems="center" spacing={2}>
+        <Grid item xs={3}>
+          <InputLabel>
+            <FormattedMessage id="location" defaultMessage="Location" />
+          </InputLabel>
+        </Grid>
+        <Grid item xs={9} display="inline">
+          <Button
+            variant="outlined"
+            sx={{ height: 40, ml: 2 }}
+            onClick={() => setIsMove(true)}
+          >
+            <FormattedMessage id="move" defaultMessage="Move" />
+          </Button>
+          {isMove && <MoveTree setSelectedParentId={setSelectedParentId} />}
+        </Grid>
+      </Grid>
       <Grid container justifyContent="flex-end" sx={{ pt: 1 }}>
         {loading && <CircularProgress />}
         <Button variant="outlined" type="submit" sx={{ height: 40, ml: 2 }}>

typescript/Frontend/src/components/Groups/Groups.tsx

@@ -3,11 +3,11 @@ import { Container } from "@mui/system";
 import { Routes, Route } from "react-router";
 import routes from "../../routes.json";
 import Installation from "../Installations/Installation";
-import NavigationButtons from "../Layout/NavigationButtons";
 import Folder from "./Folder";
 import GroupTabs from "./GroupTabs";
 import GroupContextProvider from "../Context/GroupContextProvider";
-import GroupTree from "./Tree/UserTree";
+import GroupTree from "./Tree/GroupTree";
+import NavigationButtons from "../Layout/NavigationButtons";
 
 const Groups = () => {
   return (
@@ -15,6 +15,7 @@ const Groups = () => {
       <Container maxWidth="xl">
         <Grid container spacing={2}>
           <Grid item xs={3}>
+            <NavigationButtons />
             <GroupTree />
           </Grid>
           <Grid item xs={9}>

typescript/Frontend/src/components/Groups/Tree/DragPreview.module.scss

@@ -1,20 +0,0 @@
-.root {
-  align-items: "center";
-  background-color: #1967d2;
-  border-radius: 4px;
-  box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.25),
-    0 0 0 1px rgba(0, 0, 0, 0.08);
-  color: #fff;
-  display: inline-grid;
-  font-size: 14px;
-  gap: 8px;
-  grid-template-columns: auto auto;
-  padding: 4px 8px;
-  pointer-events: none;
-}
-
-.icon,
-.label {
-  align-items: center;
-  display: flex;
-}

typescript/Frontend/src/components/Groups/Tree/DragPreview.tsx

@@ -1,23 +0,0 @@
-import { DragLayerMonitorProps } from "@minoru/react-dnd-treeview";
-import { I_Installation, I_Folder } from "../../../util/types";
-import styles from "./DragPreview.module.scss";
-import TypeIcon from "../TypeIcon";
-
-interface DragPreviewProps {
-  monitorProps: DragLayerMonitorProps<I_Installation | I_Folder>;
-}
-
-const DragPreview = (props: DragPreviewProps) => {
-  const item = props.monitorProps.item;
-
-  return (
-    <div className={styles.root}>
-      <div className={styles.icon}>
-        <TypeIcon type={item.data?.type} />
-      </div>
-      <div className={styles.label}>{item.text}</div>
-    </div>
-  );
-};
-
-export default DragPreview;

typescript/Frontend/src/components/Groups/Tree/GroupTree.module.scss

@@ -1,25 +0,0 @@
-.tree {
-  list-style-type: none;
-  padding-left: 0;
-}
-
-.app {
-  height: 100%;
-}
-
-.treeRoot {
-  height: 100%;
-}
-
-.draggingSource {
-  opacity: 0.3;
-}
-
-.dropTarget {
-  background-color: #e8f0fe;
-}
-
-.treeContainer {
-  max-height: 500px;
-  overflow: auto;
-}

typescript/Frontend/src/components/Groups/Tree/GroupTree.tsx

@@ -1,117 +1,66 @@
-import { useEffect, useState, useContext } from "react";
+import TreeView from "@mui/lab/TreeView";
-import axiosConfig from "../../../config/axiosConfig";
+import ExpandMoreIcon from "@mui/icons-material/ExpandMore";
+import ChevronRightIcon from "@mui/icons-material/ChevronRight";
+import { ReactNode, useContext, useEffect } from "react";
+import { TreeItem } from "@mui/lab";
 import { I_Folder, I_Installation } from "../../../util/types";
-import { Alert, CircularProgress, Grid } from "@mui/material";
+import { Link } from "react-router-dom";
-import { DndProvider } from "react-dnd";
+import routes from "../../../routes.json";
-import {
-  MultiBackend,
-  getBackendOptions,
-  Tree,
-  NodeModel,
-  DropOptions,
-} from "@minoru/react-dnd-treeview";
-import TreeNode from "./TreeNode";
-import styles from "./GroupTree.module.scss";
-import withScrolling from "react-dnd-scrolling";
-import DragPreview from "./DragPreview";
-import InnovenergySnackbar from "../../InnovenergySnackbar";
 import { GroupContext } from "../../Context/GroupContextProvider";
+import { instanceOfFolder } from "../../../util/group.util";
 
 const GroupTree = () => {
-  const { data, fetchData, loading, setLoading, getError, setTree, tree } =
+  const { setCurrentType, fetchData, data } = useContext(GroupContext);
-    useContext(GroupContext);
-  const [putError, setPutError] = useState(false);
-  const [snackbarOpen, setSnackbarOpen] = useState(false);
-  const [openNodes, setOpenNodes] = useState<(string | number)[]>([]);
-
-  const ScrollingComponent = withScrolling("div");
 
   useEffect(() => {
     fetchData();
   }, [fetchData]);
 
-  const handleDrop = (
+  const getNodes = (element: I_Folder | I_Installation): null | ReactNode => {
-    newTree: NodeModel<I_Folder | I_Installation>[],
+    if (instanceOfFolder(element)) {
-    { dropTargetId, dragSource }: DropOptions<I_Folder | I_Installation>
+      return element.children ? renderTree(element.children) : null;
-  ) => {
+    }
-    axiosConfig
+    return null;
-      .put(
-        dragSource?.data?.type === "Folder"
-          ? "/UpdateFolder"
-          : "/UpdateInstallation",
-        {
-          ...dragSource?.data,
-          parentId: dropTargetId,
-        }
-      )
-      .then(() => {
-        setSnackbarOpen(true);
-        setTree(newTree);
-      })
-      .catch((err) => {
-        setPutError(err);
-        setLoading(false);
-        setSnackbarOpen(true);
-      });
   };
 
-  if (loading) {
+  const renderTree = (data: (I_Folder | I_Installation)[]): ReactNode => {
+    return data.map((element) => {
+      return (
+        <Link
+          key={element.id}
+          to={
+            element.type === "Folder"
+              ? routes.folder + element.id
+              : routes.installation + element.id
+          }
+          style={{
+            textDecoration: "none",
+            color: "black",
+          }}
+          draggable={false}
+        >
+          <TreeItem
+            key={element.id}
+            nodeId={element.id.toString()}
+            label={element.name}
+            onClick={() => setCurrentType(element.type)}
+          >
+            {getNodes(element)}
+          </TreeItem>
+        </Link>
+      );
+    });
+  };
+  if (data) {
     return (
-      <Grid container justifyContent="center" width="100%">
+      <TreeView
-        <CircularProgress sx={{ m: 6 }} />
+        aria-label="rich object"
-      </Grid>
+        defaultCollapseIcon={<ExpandMoreIcon />}
-    );
+        defaultExpandIcon={<ChevronRightIcon />}
-  } else if (data && data?.length > 1) {
+        sx={{ height: 300, flexGrow: 1, maxWidth: 400 }}
-    return (
+      >
-      <DndProvider backend={MultiBackend} options={getBackendOptions()}>
+        {renderTree(data)}
-        <ScrollingComponent className={styles.treeContainer}>
+      </TreeView>
-          <Tree<I_Installation | I_Folder>
-            tree={tree}
-            rootId={0}
-            dragPreviewRender={(monitorProps) => (
-              <DragPreview monitorProps={monitorProps} />
-            )}
-            classes={{
-              container: styles.tree,
-              root: styles.treeRoot,
-              draggingSource: styles.draggingSource,
-              dropTarget: styles.dropTarget,
-            }}
-            render={(
-              node: NodeModel<I_Installation | I_Folder>,
-              { depth, isOpen, onToggle, hasChild, handleRef }
-            ) => (
-              <TreeNode
-                node={node}
-                depth={depth}
-                isOpen={isOpen}
-                onToggle={onToggle}
-                hasChild={hasChild}
-                handleRef={handleRef}
-              />
-            )}
-            onDrop={(
-              tree: NodeModel<I_Folder | I_Installation>[],
-              options: DropOptions<I_Folder | I_Installation>
-            ) => handleDrop(tree, options)}
-            onChangeOpen={(nodeIds: (number | string)[]) =>
-              setOpenNodes(nodeIds)
-            }
-            initialOpen={openNodes}
-          />
-        </ScrollingComponent>
-        <InnovenergySnackbar
-          error={putError}
-          open={snackbarOpen}
-          setOpen={setSnackbarOpen}
-        />
-      </DndProvider>
-    );
-  } else if (getError) {
-    return (
-      <Alert severity="error" sx={{ mt: 1 }}>
-        Couldn't load data
-      </Alert>
     );
   }
   return null;

typescript/Frontend/src/components/Groups/Tree/MoveTree.tsx

@@ -0,0 +1,58 @@
+import TreeView from "@mui/lab/TreeView";
+import ExpandMoreIcon from "@mui/icons-material/ExpandMore";
+import ChevronRightIcon from "@mui/icons-material/ChevronRight";
+import { ReactNode, useContext } from "react";
+import { TreeItem } from "@mui/lab";
+import { I_Folder, I_Installation } from "../../../util/types";
+import { GroupContext } from "../../Context/GroupContextProvider";
+import { instanceOfFolder } from "../../../util/group.util";
+
+interface GroupTreeProps {
+  setSelectedParentId: (value: number) => void;
+}
+
+const GroupTree = (props: GroupTreeProps) => {
+  const { data } = useContext(GroupContext);
+
+  const getNodes = (element: I_Folder | I_Installation): null | ReactNode => {
+    if (instanceOfFolder(element)) {
+      return element.children ? renderTree(element.children) : null;
+    }
+    return null;
+  };
+
+  const renderTree = (data: (I_Folder | I_Installation)[]): ReactNode => {
+    return data
+      .filter((element) => element.type === "Folder")
+      .map((element) => {
+        return (
+          <TreeItem
+            key={"move-tree-element-" + element.id}
+            nodeId={element.id.toString()}
+            label={element.name}
+          >
+            {getNodes(element)}
+          </TreeItem>
+        );
+      });
+  };
+
+  if (data) {
+    return (
+      <TreeView
+        aria-label="rich object"
+        defaultCollapseIcon={<ExpandMoreIcon />}
+        defaultExpandIcon={<ChevronRightIcon />}
+        sx={{ height: 200, flexGrow: 1, width: 400, overflow: "auto" }}
+        onNodeSelect={(e: any, id: string) =>
+          props.setSelectedParentId(parseInt(id))
+        }
+      >
+        {renderTree(data)}
+      </TreeView>
+    );
+  }
+  return null;
+};
+
+export default GroupTree;

typescript/Frontend/src/components/Groups/Tree/TreeNode.module.scss

@@ -1,40 +0,0 @@
-.root {
-  align-items: center;
-  display: grid;
-  grid-template-columns: auto auto 1fr auto;
-  height: 32px;
-  padding-inline-end: 8px;
-}
-
-.expandIconWrapper {
-  align-items: center;
-  font-size: 0;
-  cursor: pointer;
-  display: flex;
-  height: 24px;
-  justify-content: center;
-  width: 24px;
-  transition: transform linear 0.1s;
-  transform: rotate(0deg);
-}
-
-.expandIconWrapper.isOpen {
-  transform: rotate(90deg);
-}
-
-.labelGridItem {
-  padding-inline-start: 8px;
-}
-
-.handle {
-  cursor: grab;
-  display: flex;
-}
-
-.handle > svg {
-  pointer-events: none;
-}
-
-.selected {
-  background-color: #f5910014;
-}

typescript/Frontend/src/components/Groups/Tree/TreeNode.tsx

@@ -1,95 +0,0 @@
-import React, { useContext, useEffect } from "react";
-import Typography from "@mui/material/Typography";
-import ArrowRightIcon from "@mui/icons-material/ArrowRight";
-import { NodeModel } from "@minoru/react-dnd-treeview";
-import styles from "./TreeNode.module.scss";
-import { Link } from "react-router-dom";
-import routes from "../../../routes.json";
-import { I_Folder, I_Installation } from "../../../util/types";
-import TypeIcon from "../TypeIcon";
-import DragHandleIcon from "@mui/icons-material/DragHandle";
-import useRouteMatch from "../../../hooks/useRouteMatch";
-import { GroupContext } from "../../Context/GroupContextProvider";
-
-interface TreeNodeProps {
-  node: NodeModel<I_Installation | I_Folder>;
-  depth: number;
-  isOpen: boolean;
-  onToggle: (id: NodeModel["id"]) => void;
-  hasChild: boolean;
-  handleRef: React.RefObject<any>;
-}
-
-const TreeNode = (props: TreeNodeProps) => {
-  const { node, isOpen, hasChild, onToggle, depth, handleRef } = props;
-  const indent = depth * 24;
-
-  const { setCurrentType } = useContext(GroupContext);
-  const routeMatch = useRouteMatch([
-    routes.groups + routes.installation + ":id",
-    routes.groups + routes.folder + ":id",
-    routes.groups + routes.users + ":id",
-  ]);
-
-  const isSelected = routeMatch?.params.id === node.data?.id.toString();
-
-  const handleToggle = (e: React.MouseEvent) => {
-    setTimeout(
-      () =>
-        document
-          .getElementById(node.id.toString())
-          ?.scrollIntoView({ block: "center" }),
-      0
-    );
-    e.stopPropagation();
-    onToggle(node.id);
-  };
-
-  useEffect(() => {
-    if (node.data && isSelected) {
-      setCurrentType(node.data?.type);
-    }
-  }, [isSelected, node.data, setCurrentType]);
-
-  return (
-    <div
-      id={node.id.toString()}
-      className={`tree-node ${styles.root} ${
-        isSelected ? styles.selected : ""
-      }`}
-      style={{ paddingInlineStart: indent }}
-    >
-      <div
-        className={`${styles.expandIconWrapper} ${isOpen ? styles.isOpen : ""}`}
-      >
-        {node.droppable && hasChild && (
-          <div onClick={handleToggle}>
-            <ArrowRightIcon />
-          </div>
-        )}
-      </div>
-      <TypeIcon type={node.data?.type} />
-      <Link
-        to={
-          node.droppable
-            ? routes.folder + node.id
-            : routes.installation + (node.data ? node.data.id : "")
-        }
-        style={{
-          textDecoration: "none",
-          color: "black",
-        }}
-        draggable={false}
-      >
-        <div className={styles.labelGridItem}>
-          <Typography variant="body2">{node.text}</Typography>
-        </div>
-      </Link>
-      <div className={`${styles.handle} drag-handle`} ref={handleRef}>
-        <DragHandleIcon />
-      </div>
-    </div>
-  );
-};
-
-export default TreeNode;

typescript/Frontend/src/components/Groups/Tree/UserTree.tsx

@@ -1,75 +0,0 @@
-import TreeView from "@mui/lab/TreeView";
-import ExpandMoreIcon from "@mui/icons-material/ExpandMore";
-import ChevronRightIcon from "@mui/icons-material/ChevronRight";
-import { ReactNode, useEffect, useState } from "react";
-import { TreeItem } from "@mui/lab";
-import axiosConfig from "../../../config/axiosConfig";
-import { I_Folder, I_Installation } from "../../../util/types";
-
-const GroupTree = () => {
-  const [data, setData] = useState<(I_Folder | I_Installation)[]>();
-
-  useEffect(() => {
-    axiosConfig.get("/GetAllFoldersAndInstallations").then((res) => {
-      setData(res.data);
-    });
-  }, []);
-
-  const handleClick = (e: any, nodes: any) => {
-    console.log(e);
-    console.log(nodes);
-  };
-
-  const instanceOfFolder = (object: any): object is I_Folder => {
-    return "children" in object;
-  };
-
-  const getNodes = (element: I_Folder | I_Installation): null | ReactNode => {
-    if (instanceOfFolder(element)) {
-      return element.children ? renderTree(element.children) : null;
-    }
-    return null;
-  };
-
-  const nest = (
-    items: (I_Folder | I_Installation)[],
-    id: number | null = null
-  ): any => {
-    return items.map((item) => {
-      if (item.parentId === 0 && item.type === "Installlation") {
-        return item;
-      }
-      return { ...item, children: nest(items, item.id) };
-    });
-  };
-
-  const renderTree = (data: (I_Folder | I_Installation)[]): ReactNode => {
-    return data.map((element) => {
-      return (
-        <TreeItem
-          key={element.id}
-          nodeId={element.id.toString()}
-          label={element.name}
-        >
-          {getNodes(element)}
-        </TreeItem>
-      );
-    });
-  };
-
-  return (
-    <></>
-    // <TreeView
-    //   aria-label="rich object"
-    //   defaultCollapseIcon={<ExpandMoreIcon />}
-    //   defaultExpandIcon={<ChevronRightIcon />}
-    //   sx={{ height: 300, flexGrow: 1, maxWidth: 400 }}
-    //   onNodeToggle={handleClick}
-    // >
-    //   {renderTree(data)}
-    //   {data && renderTree(data)}
-    // </TreeView>
-  );
-};
-
-export default GroupTree;

typescript/Frontend/src/components/Installations/CustomerForm.tsx

@@ -1,14 +1,10 @@
 import { Alert, Button, Grid, Snackbar } from "@mui/material";
 import { useFormik } from "formik";
-import { useContext, useState } from "react";
+import { useState } from "react";
 import { FormattedMessage, useIntl } from "react-intl";
 import axiosConfig from "../../config/axiosConfig";
-import useRouteMatch from "../../hooks/useRouteMatch";
 import { I_Installation } from "../../util/types";
-import { GroupContext } from "../Context/GroupContextProvider";
 import InnovenergyTextfield from "../Layout/InnovenergyTextfield";
-import routes from "../../routes.json";
-import { InstallationContext } from "../Context/InstallationContextProvider";
 
 interface I_CustomerFormProps {
   values: I_Installation;
@@ -19,12 +15,6 @@ const CustomerForm = (props: I_CustomerFormProps) => {
   const [open, setOpen] = useState(false);
 
   const intl = useIntl();
-  const { fetchData: fetchGroupData } = useContext(GroupContext);
-  const { fetchData: fetchInstallationData } = useContext(InstallationContext);
-
-  const groupsMatch = useRouteMatch([
-    routes.groups + routes.installation + ":id",
-  ]);
 
   const formik = useFormik({
     initialValues: {
@@ -42,11 +32,6 @@ const CustomerForm = (props: I_CustomerFormProps) => {
         })
         .then(() => {
           setOpen(true);
-          if (groupsMatch) {
-            fetchGroupData();
-          } else {
-            fetchInstallationData();
-          }
         });
     },
   });

typescript/Frontend/src/util/group.util.tsx

@@ -0,0 +1,22 @@
+import { I_Folder, I_Installation } from "./types";
+
+export const transformArrayToTree = (
+  array: (I_Folder | I_Installation)[],
+  parentId: number = 0
+): (I_Folder | I_Installation)[] => {
+  return array
+    .filter((item) => item.parentId === parentId)
+    .map((item) => {
+      if (item.type === "Installation") {
+        return item;
+      } else {
+        const folder = item as I_Folder;
+        folder.children = transformArrayToTree(array, folder.id);
+        return folder;
+      }
+    });
+};
+
+export const instanceOfFolder = (object: any): object is I_Folder => {
+  return "children" in object;
+};