feat: add folders (#1711)

packages/lib/server-only/folder/move-folder.ts

@@ -0,0 +1,85 @@
+import { AppError, AppErrorCode } from '@documenso/lib/errors/app-error';
+import type { ApiRequestMetadata } from '@documenso/lib/universal/extract-request-metadata';
+import { prisma } from '@documenso/prisma';
+
+export interface MoveFolderOptions {
+  userId: number;
+  teamId?: number;
+  folderId?: string;
+  parentId?: string | null;
+  requestMetadata?: ApiRequestMetadata;
+}
+
+export const moveFolder = async ({ userId, teamId, folderId, parentId }: MoveFolderOptions) => {
+  return await prisma.$transaction(async (tx) => {
+    const folder = await tx.folder.findFirst({
+      where: {
+        id: folderId,
+        userId,
+        teamId,
+      },
+    });
+
+    if (!folder) {
+      throw new AppError(AppErrorCode.NOT_FOUND, {
+        message: 'Folder not found',
+      });
+    }
+
+    if (parentId) {
+      const parentFolder = await tx.folder.findFirst({
+        where: {
+          id: parentId,
+          userId,
+          teamId,
+          type: folder.type,
+        },
+      });
+
+      if (!parentFolder) {
+        throw new AppError(AppErrorCode.NOT_FOUND, {
+          message: 'Parent folder not found',
+        });
+      }
+
+      if (parentId === folderId) {
+        throw new AppError(AppErrorCode.INVALID_REQUEST, {
+          message: 'Cannot move a folder into itself',
+        });
+      }
+
+      let currentParentId = parentFolder.parentId;
+      while (currentParentId) {
+        if (currentParentId === folderId) {
+          throw new AppError(AppErrorCode.INVALID_REQUEST, {
+            message: 'Cannot move a folder into its descendant',
+          });
+        }
+
+        const currentParent = await tx.folder.findUnique({
+          where: {
+            id: currentParentId,
+          },
+          select: {
+            parentId: true,
+          },
+        });
+
+        if (!currentParent) {
+          break;
+        }
+
+        currentParentId = currentParent.parentId;
+      }
+    }
+
+    return await tx.folder.update({
+      where: {
+        id: folderId,
+      },
+      data: {
+        parentId,
+      },
+    });
+  });
+};