feat: add purgeContent option to tombstoneUser for soft-delete mode

packages/server/src/utils/userDeletion.ts

@@ -2,6 +2,11 @@ import crypto from 'crypto';
 import { eq, or, and, inArray } from 'drizzle-orm';
 import { getDb, schema } from '../db/index.js';
 
+export interface TombstoneOptions {
+  /** When false, skip reaction deletion and orphaned DM purge (soft-delete mode). Default: true */
+  purgeContent?: boolean;
+}
+
 /**
  * Tombstone a user account: removes them from all spaces, DMs, friends,
  * roles, reactions, folders, bans, voice restrictions, channel overrides,
@@ -12,7 +17,7 @@ import { getDb, schema } from '../db/index.js';
  * orphaned DM attachments). The caller is responsible for disk cleanup
  * and WebSocket disconnection after calling this.
  */
-export function tombstoneUser(uid: string): string[] {
+export function tombstoneUser(uid: string, options?: TombstoneOptions): string[] {
   const db = getDb();
 
   const user = db.select().from(schema.users).where(eq(schema.users.id, uid)).get();
@@ -22,6 +27,8 @@ export function tombstoneUser(uid: string): string[] {
   if (user.avatar) filesToDelete.push(user.avatar);
   if (user.banner) filesToDelete.push(user.banner);
 
+  const purge = options?.purgeContent !== false; // default true
+
   // Find group DMs this user owns so we can transfer ownership
   const ownedGroupDms = db.select({ id: schema.dmChannels.id })
     .from(schema.dmChannels)
@@ -36,8 +43,10 @@ export function tombstoneUser(uid: string): string[] {
     tx.delete(schema.friendRequests).where(or(eq(schema.friendRequests.fromId, uid), eq(schema.friendRequests.toId, uid))).run();
     tx.delete(schema.dmMembers).where(eq(schema.dmMembers.userId, uid)).run();
     tx.delete(schema.readStates).where(eq(schema.readStates.userId, uid)).run();
+    if (purge) {
       tx.delete(schema.reactions).where(eq(schema.reactions.userId, uid)).run();
       tx.delete(schema.dmReactions).where(eq(schema.dmReactions.userId, uid)).run();
+    }
     tx.delete(schema.spaceFolders).where(eq(schema.spaceFolders.userId, uid)).run();
 
     // Conditional deletes for tables that may reference userId
@@ -76,6 +85,7 @@ export function tombstoneUser(uid: string): string[] {
       }
     }
 
+    if (purge) {
       // Clean up orphaned DM channels (zero members after our removal)
       const orphanedDmIds = tx.select({ id: schema.dmChannels.id })
         .from(schema.dmChannels)
@@ -109,6 +119,7 @@ export function tombstoneUser(uid: string): string[] {
         }
         tx.delete(schema.dmChannels).where(eq(schema.dmChannels.id, dmId)).run();
       }
+    }
 
     // Tombstone user row — rename username to free it for reuse
     tx.update(schema.users).set({