feat: allow users to delete entities they have created

packages/api/src/routers/board.ts

@@ -15,7 +15,7 @@ import {
 } from "@kan/shared/utils";
 
 import { createTRPCRouter, protectedProcedure, publicProcedure } from "../trpc";
-import { assertPermission } from "../utils/permissions";
+import { assertCanDelete, assertCanEdit, assertPermission } from "../utils/permissions";
 
 export const boardRouter = createTRPCRouter({
   all: protectedProcedure
@@ -422,7 +422,13 @@ export const boardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, board.workspaceId, "board:edit");
+      await assertCanEdit(
+        ctx.db,
+        userId,
+        board.workspaceId,
+        "board:edit",
+        board.createdBy ?? null,
+      );
 
       if (input.slug) {
         const isBoardSlugAvailable = await boardRepo.isBoardSlugAvailable(
@@ -491,7 +497,13 @@ export const boardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, board.workspaceId, "board:delete");
+      await assertCanDelete(
+        ctx.db,
+        userId,
+        board.workspaceId,
+        "board:delete",
+        board.createdBy ?? null,
+      );
 
       const listIds = board.lists.map((list) => list.id);
 

packages/api/src/routers/card.ts

@@ -10,7 +10,7 @@ import * as workspaceRepo from "@kan/db/repository/workspace.repo";
 
 import { createTRPCRouter, protectedProcedure, publicProcedure } from "../trpc";
 import { mergeActivities } from "../utils/activities";
-import { assertPermission } from "../utils/permissions";
+import { assertCanDelete, assertCanEdit, assertPermission } from "../utils/permissions";
 import { generateDownloadUrl } from "../utils/s3";
 
 export const cardRouter = createTRPCRouter({
@@ -256,8 +256,6 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, card.workspaceId, "comment:edit");
-
       const existingComment = await cardCommentRepo.getByPublicId(
         ctx.db,
         input.commentPublicId,
@@ -269,11 +267,13 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      if (existingComment.createdBy !== userId)
-        throw new TRPCError({
-          message: `You do not have permission to update this comment`,
-          code: "FORBIDDEN",
-        });
+      await assertCanEdit(
+        ctx.db,
+        userId,
+        card.workspaceId,
+        "comment:edit",
+        existingComment.createdBy,
+      );
 
       const updatedComment = await cardCommentRepo.update(ctx.db, {
         id: existingComment.id,
@@ -334,8 +334,6 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, card.workspaceId, "comment:delete");
-
       const existingComment = await cardCommentRepo.getByPublicId(
         ctx.db,
         input.commentPublicId,
@@ -347,6 +345,14 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
+      await assertCanDelete(
+        ctx.db,
+        userId,
+        card.workspaceId,
+        "comment:delete",
+        existingComment.createdBy,
+      );
+
       const deletedComment = await cardCommentRepo.softDelete(ctx.db, {
         commentId: existingComment.id,
         deletedAt: new Date(),
@@ -782,7 +788,13 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, card.workspaceId, "card:edit");
+      await assertCanEdit(
+        ctx.db,
+        userId,
+        card.workspaceId,
+        "card:edit",
+        card.createdBy,
+      );
 
       const existingCard = await cardRepo.getByPublicId(
         ctx.db,
@@ -952,7 +964,13 @@ export const cardRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, card.workspaceId, "card:delete");
+      await assertCanDelete(
+        ctx.db,
+        userId,
+        card.workspaceId,
+        "card:delete",
+        card.createdBy,
+      );
 
       const deletedAt = new Date();
 

packages/api/src/routers/list.ts

@@ -7,7 +7,7 @@ import * as activityRepo from "@kan/db/repository/cardActivity.repo";
 import * as listRepo from "@kan/db/repository/list.repo";
 
 import { createTRPCRouter, protectedProcedure } from "../trpc";
-import { assertPermission } from "../utils/permissions";
+import { assertCanDelete, assertCanEdit, assertPermission } from "../utils/permissions";
 
 export const listRouter = createTRPCRouter({
   create: protectedProcedure
@@ -101,7 +101,13 @@ export const listRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, list.workspaceId, "list:delete");
+      await assertCanDelete(
+        ctx.db,
+        userId,
+        list.workspaceId,
+        "list:delete",
+        list.createdBy,
+      );
 
       const deletedAt = new Date();
 
@@ -183,7 +189,13 @@ export const listRouter = createTRPCRouter({
           code: "NOT_FOUND",
         });
 
-      await assertPermission(ctx.db, userId, list.workspaceId, "list:edit");
+      await assertCanEdit(
+        ctx.db,
+        userId,
+        list.workspaceId,
+        "list:edit",
+        list.createdBy,
+      );
 
       let result: { name: string; publicId: string } | undefined;
 

packages/api/src/utils/permissions.ts

@@ -182,7 +182,7 @@ export async function assertCanManageRole(
     });
   }
 
-  const managerRole = managerMember.role as Role;
+  const managerRole = managerMember.role;
 
   if (!canManageRole(managerRole, targetRoleName as Role)) {
     throw new TRPCError({
@@ -223,8 +223,8 @@ export async function assertCanManageMember(
     });
   }
 
-  const managerRole = managerMember.role as Role;
-  const targetRole = targetMember.role as Role;
+  const managerRole = managerMember.role;
+  const targetRole = targetMember.role;
 
   if (!canManageRole(managerRole, targetRole)) {
     throw new TRPCError({
@@ -233,3 +233,63 @@ export async function assertCanManageMember(
     });
   }
 }
+
+/**
+ * Assert user can delete an entity - either has the delete permission OR is the creator
+ */
+export async function assertCanDelete(
+  db: dbClient,
+  userId: string,
+  workspaceId: number,
+  permission: Permission,
+  createdBy: string | null,
+): Promise<void> {
+  // Check if user has the general delete permission
+  const hasDeletePermission = await hasPermission(db, userId, workspaceId, permission);
+
+  // If user has permission, allow deletion
+  if (hasDeletePermission) {
+    return;
+  }
+
+  // If user doesn't have permission, check if they are the creator
+  if (createdBy && createdBy === userId) {
+    return;
+  }
+
+  // Neither condition met - deny deletion
+  throw new TRPCError({
+    message: `You do not have permission to delete this entity (${permission})`,
+    code: "FORBIDDEN",
+  });
+}
+
+/**
+ * Assert user can edit an entity - either has the edit permission OR is the creator
+ */
+export async function assertCanEdit(
+  db: dbClient,
+  userId: string,
+  workspaceId: number,
+  permission: Permission,
+  createdBy: string | null,
+): Promise<void> {
+  // Check if user has the general edit permission
+  const hasEditPermission = await hasPermission(db, userId, workspaceId, permission);
+
+  // If user has permission, allow editing
+  if (hasEditPermission) {
+    return;
+  }
+
+  // If user doesn't have permission, check if they are the creator
+  if (createdBy && createdBy === userId) {
+    return;
+  }
+
+  // Neither condition met - deny editing
+  throw new TRPCError({
+    message: `You do not have permission to edit this entity (${permission})`,
+    code: "FORBIDDEN",
+  });
+}

packages/db/src/repository/board.repo.ts

@@ -518,6 +518,7 @@ export const getWithListIdsByPublicId = (
     columns: {
       id: true,
       workspaceId: true,
+      createdBy: true,
     },
     with: {
       lists: {
@@ -671,6 +672,7 @@ export const getWorkspaceAndBoardIdByBoardPublicId = async (
     columns: {
       id: true,
       workspaceId: true,
+      createdBy: true,
     },
     where: eq(boards.publicId, boardPublicId),
   });

packages/db/src/repository/card.repo.ts

@@ -424,6 +424,7 @@ export const getWithListAndMembersByPublicId = async (
       title: true,
       description: true,
       dueDate: true,
+      createdBy: true,
     },
     with: {
       labels: {
@@ -938,7 +939,7 @@ export const getWorkspaceAndCardIdByCardPublicId = async (
   cardPublicId: string,
 ) => {
   const result = await db.query.cards.findFirst({
-    columns: { id: true },
+    columns: { id: true, createdBy: true },
     where: and(eq(cards.publicId, cardPublicId), isNull(cards.deletedAt)),
     with: {
       list: {
@@ -958,6 +959,7 @@ export const getWorkspaceAndCardIdByCardPublicId = async (
   return result
     ? {
         id: result.id,
+        createdBy: result.createdBy,
         workspaceId: result.list.board.workspaceId,
         workspaceVisibility: result.list.board.visibility,
       }

packages/db/src/repository/list.repo.ts

@@ -419,7 +419,7 @@ export const getWorkspaceAndListIdByListPublicId = async (
   listPublicId: string,
 ) => {
   const result = await db.query.lists.findFirst({
-    columns: { id: true },
+    columns: { id: true, createdBy: true },
     where: and(eq(lists.publicId, listPublicId), isNull(lists.deletedAt)),
     with: {
       board: {
@@ -431,6 +431,10 @@ export const getWorkspaceAndListIdByListPublicId = async (
   });
 
   return result
-    ? { id: result.id, workspaceId: result.board.workspaceId }
+    ? {
+        id: result.id,
+        createdBy: result.createdBy,
+        workspaceId: result.board.workspaceId,
+      }
     : null;
 };