chore(esdoc): update and unify ESDoc and parameter names (2)

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

backend/src/permissions/require-permission.decorator.ts

@@ -10,7 +10,8 @@ export const PERMISSION_METADATA_KEY = 'requiredPermission';
 
 /**
  * This decorator gathers the {@link PermissionLevel} a user must hold for the {@link PermissionsGuard}
- * @param permissionLevel the required permission for the decorated action.
+ * @param permissionLevel the required permission for the decorated action
+ * @returns The custom decorator action
  */
 // eslint-disable-next-line @typescript-eslint/naming-convention
 export function RequirePermission(

backend/src/realtime/realtime-note/random-word-lists/random-words.json.license

@@ -1,3 +0,0 @@
-SPDX-FileCopyrightText: The author of https://www.randomlists.com/
-
-SPDX-License-Identifier: CC0-1.0

backend/src/realtime/realtime-note/realtime-connection.spec.ts

@@ -12,7 +12,7 @@ import * as HedgeDocCommonsModule from '@hedgedoc/commons';
 import { FieldNameUser, User } from '@hedgedoc/database';
 import { Mock } from 'ts-mockery';
 
-import * as NameRandomizerModule from './random-word-lists/name-randomizer';
+import * as NameRandomizerModule from '../../users/random-word-lists/name-randomizer';
 import { RealtimeConnection } from './realtime-connection';
 import { RealtimeNote } from './realtime-note';
 import {
@@ -21,7 +21,7 @@ import {
 } from './realtime-user-status-adapter';
 import * as RealtimeUserStatusModule from './realtime-user-status-adapter';
 
-jest.mock('./random-word-lists/name-randomizer');
+jest.mock('../../users/random-word-lists/name-randomizer');
 jest.mock('./realtime-user-status-adapter');
 jest.mock(
   '@hedgedoc/commons',

backend/src/realtime/realtime-note/realtime-connection.ts

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */
@@ -26,8 +26,8 @@ export class RealtimeConnection {
    * @param username The username of the user of the client
    * @param displayName The displayName of the user of the client
    * @param authorStyle The authorStyle of the user of the client
-   * @param realtimeNote The {@link RealtimeNote} that the client connected to.
-   * @param acceptEdits If edits by this connection should be accepted.
+   * @param realtimeNote The {@link RealtimeNote} that the client connected to
+   * @param acceptEdits If edits by this connection should be accepted
    * @throws Error if the socket is not open
    */
   constructor(
@@ -62,34 +62,74 @@ export class RealtimeConnection {
     );
   }
 
+  /**
+   * Returns the realtime user state adapter of this connection.
+   *
+   * @returns the realtime user state adapter
+   */
   public getRealtimeUserStateAdapter(): RealtimeUserStatusAdapter {
     return this.realtimeUserStateAdapter;
   }
 
+  /**
+   * Returns the message transporter of this connection.
+   *
+   * @returns the message transporter
+   */
   public getTransporter(): MessageTransporter {
     return this.transporter;
   }
 
+  /**
+   * Returns the YDoc sync adapter of this connection.
+   *
+   * @returns the YDoc sync adapter
+   */
   public getSyncAdapter(): YDocSyncServerAdapter {
     return this.yDocSyncAdapter;
   }
 
+  /**
+   * Returns the user id of the user of this connection.
+   *
+   * @returns the user id
+   */
   public getUserId(): number {
     return this.userId;
   }
 
+  /**
+   * Returns the display name of the user of this connection.
+   *
+   * @returns the display name
+   */
   public getDisplayName(): string {
     return this.displayName;
   }
 
+  /**
+   * Returns the username of the user of this connection.
+   *
+   * @returns the username or null for guest users
+   */
   public getUsername(): string | null {
     return this.username;
   }
 
+  /**
+   * Returns the author style of the user of this connection.
+   *
+   * @returns the author style
+   */
   public getAuthorStyle(): number {
     return this.authorStyle;
   }
 
+  /**
+   * Returns the realtime note that this connection is connected to.
+   *
+   * @returns the realtime note
+   */
   public getRealtimeNote(): RealtimeNote {
     return this.realtimeNote;
   }

backend/src/realtime/realtime-note/realtime-note-store.ts

@@ -7,17 +7,21 @@ import { Injectable } from '@nestjs/common';
 
 import { RealtimeNote } from './realtime-note';
 
+/**
+ * A store for {@link RealtimeNote} instances that are linked to a specific note.
+ * It allows creating, finding, and retrieving all realtime notes.
+ */
 @Injectable()
 export class RealtimeNoteStore {
   private noteIdToRealtimeNote = new Map<number, RealtimeNote>();
 
   /**
-   * Creates a new {@link RealtimeNote} for the given {@link Note} and memorizes it.
+   * Creates a new {@link RealtimeNote} for the given note and memorizes it
    *
-   * @param noteId The note for which the realtime note should be created
+   * @param noteId The id of the note for which the realtime note should be created
    * @param initialTextContent the initial text content of realtime doc
    * @param initialYjsState the initial yjs state. If provided this will be used instead of the text content
-   * @throws Error if there is already an realtime note for the given note.
+   * @throws Error if there is already a realtime note for the given note.
    * @returns The created realtime note
    */
   public create(
@@ -41,16 +45,19 @@ export class RealtimeNoteStore {
   }
 
   /**
-   * Retrieves a {@link RealtimeNote} that is linked to the given {@link Note} id.
-   * @param noteId The id of the {@link Note}
-   * @returns A {@link RealtimeNote} or {@code undefined} if no instance is existing.
+   * Retrieves a {@link RealtimeNote} that is linked to the given note id
+   *
+   * @param noteId The id of the note
+   * @returns A {@link RealtimeNote} or undefined if no instance is existing
    */
   public find(noteId: number): RealtimeNote | undefined {
     return this.noteIdToRealtimeNote.get(noteId);
   }
 
   /**
-   * Returns all registered {@link RealtimeNote realtime notes}.
+   * Returns all registered {@link RealtimeNote realtime notes}
+   *
+   * @returns An array of all realtime notes
    */
   public getAllRealtimeNotes(): RealtimeNote[] {
     return [...this.noteIdToRealtimeNote.values()];

backend/src/realtime/realtime-note/realtime-note.service.ts

@@ -31,6 +31,10 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
     private permissionService: PermissionService,
   ) {}
 
+  /**
+   * Cleans up all {@link RealtimeNote} instances before the application is shut down
+   * This method is called by NestJS when the application is shutting down
+   */
   beforeApplicationShutdown(): void {
     this.realtimeNoteStore
       .getAllRealtimeNotes()
@@ -38,7 +42,7 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
   }
 
   /**
-   * Reads the current content from the given {@link RealtimeNote} and creates a new {@link Revision} for the linked {@link Note}.
+   * Reads the current content from the given {@link RealtimeNote} and creates a new revision for the linked note.
    *
    * @param realtimeNote The realtime note for which a revision should be created
    */
@@ -58,10 +62,11 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
   }
 
   /**
-   * Creates or reuses a {@link RealtimeNote} that is handling the real time editing of the {@link Note} which is identified by the given note id.
-   * @param noteId The {@link Note} for which a {@link RealtimeNote realtime note} should be retrieved.
+   * Creates or reuses a {@link RealtimeNote} that is handling the real-time-editing of the note which is identified by the given note id
+   *
+   * @param noteId The id of the note for which a {@link RealtimeNote} should be retrieved
+   * @returns A RealtimeNote that is linked to the given note.
    * @throws NotInDBError if note doesn't exist or has no revisions.
-   * @returns A {@link RealtimeNote} that is linked to the given note.
    */
   public async getOrCreateRealtimeNote(noteId: number): Promise<RealtimeNote> {
     return (
@@ -71,11 +76,12 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
   }
 
   /**
-   * Creates a new {@link RealtimeNote} for the given {@link Note}.
+   * Creates a new {@link RealtimeNote} for the given note and registers event listeners
+   * to persist the note periodically and before it is destroyed
    *
-   * @param noteId The note for which the realtime note should be created
-   * @throws NotInDBError if note doesn't exist or has no revisions.
+   * @param noteId The id of the note for which the realtime note should be created
    * @returns The created realtime note
+   * @throws NotInDBError if the note doesn't exist or has no revisions
    */
   private async createNewRealtimeNote(noteId: number): Promise<RealtimeNote> {
     const lastRevision = await this.revisionsService.getLatestRevision(noteId);
@@ -117,16 +123,31 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
       });
   }
 
+  /**
+   * Reflects the changes of the note's permissions to all connections of the note
+   *
+   * @param noteId The id of the note for that permissions changed
+   */
   @OnEvent(NoteEvent.PERMISSION_CHANGE)
   public async handleNotePermissionChanged(noteId: number): Promise<void> {
     const realtimeNote = this.realtimeNoteStore.find(noteId);
-    if (!realtimeNote) return;
+    if (realtimeNote === undefined) {
+      return;
+    }
 
     realtimeNote.announceMetadataUpdate();
     const allConnections = realtimeNote.getConnections();
     await this.updateOrCloseConnection(allConnections, noteId);
   }
 
+  /**
+   * Updates the connections of the given note based on the current permissions of the user.
+   * If the user has no permission to edit the note, the connection is closed.
+   * Otherwise, it updates the acceptEdits property of the connection.
+   *
+   * @param connections The connections to update
+   * @param noteId The id of the note for which the connections should be updated
+   */
   private async updateOrCloseConnection(
     connections: RealtimeConnection[],
     noteId: number,
@@ -145,6 +166,11 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
     }
   }
 
+  /**
+   * Reflects the deletion of a note to all connections of the note
+   *
+   * @param noteId The id of the just deleted note
+   */
   @OnEvent(NoteEvent.DELETION)
   public handleNoteDeleted(noteId: number): void {
     const realtimeNote = this.realtimeNoteStore.find(noteId);
@@ -153,11 +179,16 @@ export class RealtimeNoteService implements BeforeApplicationShutdown {
     }
   }
 
+  /**
+   * Closes the realtime note for the given note id and saves its content
+   * This is called when the note is updated externally, e.g. by the API
+   *
+   * @param noteId The id of the note for which the realtime note should be closed
+   */
   @OnEvent(NoteEvent.CLOSE_REALTIME)
   public closeRealtimeNote(noteId: number): void {
     const realtimeNote = this.realtimeNoteStore.find(noteId);
     if (realtimeNote) {
-      this.saveRealtimeNote(realtimeNote);
       realtimeNote.destroy();
     }
   }

backend/src/realtime/realtime-note/realtime-note.ts

@@ -31,6 +31,13 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   private isClosing = false;
   private destroyEventTimer: NodeJS.Timeout | null = null;
 
+  /**
+   * Creates a new realtime note for the given note id and initial text content
+   *
+   * @param noteId the id of the note that is being edited
+   * @param initialTextContent the initial text content of the note
+   * @param initialYjsState the initial yjs state of the note, if available
+   */
   constructor(
     private readonly noteId: number,
     initialTextContent: string,
@@ -58,9 +65,8 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   }
 
   /**
-   * Connects a new client to the note.
-   *
-   * For this purpose a {@link RealtimeConnection} is created and added to the client map.
+   * Connects a new client to the note
+   * For this purpose a {@link RealtimeConnection} is created and added to the client map
    *
    * @param client the websocket connection to the client
    */
@@ -73,7 +79,7 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   /**
    * Disconnects the given websocket client while cleaning-up if it was the last user in the realtime note.
    *
-   * @param client The websocket client that disconnects.
+   * @param client The websocket client that disconnects
    */
   public removeClient(client: RealtimeConnection): void {
     this.clients.delete(client);
@@ -94,7 +100,7 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   }
 
   /**
-   * Destroys the current realtime note by deleting the y-js doc and disconnecting all clients.
+   * Destroys the current realtime note by deleting the yjs doc and disconnecting all clients
    *
    * @throws Error if note has already been destroyed
    */
@@ -112,60 +118,60 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   }
 
   /**
-   * Checks if there's still clients connected to this note.
+   * Checks if there are still clients connected to this note
    *
-   * @returns {@code true} if there a still clinets connected, otherwise {@code false}
+   * @returns true if there are still clients connected, otherwise false
    */
   public hasConnections(): boolean {
     return this.clients.size !== 0;
   }
 
   /**
-   * Returns all {@link RealtimeConnection WebsocketConnections} currently hold by this note.
+   * Returns all {@link RealtimeConnection} currently hold by this note
    *
-   * @returns an array of {@link RealtimeConnection WebsocketConnections}
+   * @returns an array of {@link RealtimeConnection}s
    */
   public getConnections(): RealtimeConnection[] {
     return [...this.clients];
   }
 
   /**
-   * Get the {@link RealtimeDoc realtime note} of the note.
+   * Gets the {@link RealtimeDoc} for the note.
    *
-   * @returns the {@link RealtimeDoc realtime note} of the note
+   * @returns the {@link RealtimeDoc} for the note
    */
   public getRealtimeDoc(): RealtimeDoc {
     return this.doc;
   }
 
   /**
-   * Get the {@link Note note} that is edited.
+   * Gets the id of the note that is edited.
    *
-   * @returns the {@link Note note}
+   * @returns the note id
    */
   public getNoteId(): number {
     return this.noteId;
   }
 
   /**
-   * Announce to all clients that the metadata of the note have been changed.
-   * This could for example be a permission change or a revision being saved.
+   * Announces to all clients that the metadata of the note has been changed,
+   * for example on a permission change or a revision being saved
    */
   public announceMetadataUpdate(): void {
     this.sendToAllClients({ type: MessageType.METADATA_UPDATED });
   }
 
   /**
-   * Announce to all clients that the note has been deleted.
+   * Announces to all clients that the note has been deleted
    */
   public announceNoteDeletion(): void {
     this.sendToAllClients({ type: MessageType.DOCUMENT_DELETED });
   }
 
   /**
-   * Broadcasts the given content to all connected clients.
+   * Broadcasts the given content to all connected clients
    *
-   * @param {Uint8Array} content The binary message to broadcast
+   * @param content The binary message to broadcast
    */
   private sendToAllClients(content: Message<MessageType>): void {
     this.getConnections().forEach((connection) => {
@@ -174,7 +180,9 @@ export class RealtimeNote extends EventEmitter2<RealtimeNoteEventMap> {
   }
 
   /**
-   * Indicates if a realtime note is ready to get destroyed.
+   * Indicates if a realtime note is ready to get destroyed
+   *
+   * @returns true if the note can be destroyed, otherwise false
    */
   private canBeDestroyed(): boolean {
     return !this.hasConnections() && !this.isClosing;

backend/src/realtime/realtime-note/realtime-user-status-adapter.ts

@@ -19,6 +19,16 @@ export type OtherAdapterCollector = () => RealtimeUserStatusAdapter[];
 export class RealtimeUserStatusAdapter {
   private readonly realtimeUser: RealtimeUser;
 
+  /**
+   * Creates a new realtime user status adapter.
+   *
+   * @param username the username of the user, or null if the user is a guest
+   * @param displayName the display name of the user
+   * @param authorStyle the style index of the author
+   * @param collectOtherAdapters a function that returns all other adapters to send updates to
+   * @param messageTransporter the message transporter to use for sending messages
+   * @param acceptCursorUpdateProvider a function that returns whether cursor updates should be accepted
+   */
   constructor(
     private readonly username: string | null,
     private readonly displayName: string,
@@ -31,6 +41,11 @@ export class RealtimeUserStatusAdapter {
     this.bindRealtimeUserStateEvents();
   }
 
+  /**
+   * Returns the current realtime user state
+   *
+   * @returns the current realtime user state
+   */
   private createInitialRealtimeUserState(): RealtimeUser {
     return {
       username: this.username,
@@ -46,6 +61,9 @@ export class RealtimeUserStatusAdapter {
     };
   }
 
+  /**
+   * Registers the listeners for the realtime user state events
+   */
   private bindRealtimeUserStateEvents(): void {
     const transporterMessagesListener = this.messageTransporter.on(
       MessageType.REALTIME_USER_SINGLE_UPDATE,
@@ -102,10 +120,19 @@ export class RealtimeUserStatusAdapter {
     });
   }
 
+  /**
+   * Gets the current real-time user state if the message transporter is ready
+   *
+   * @returns the current real-time user state or undefined if the transporter is not ready
+   */
   private getSendableState(): RealtimeUser | undefined {
     return this.messageTransporter.isReady() ? this.realtimeUser : undefined;
   }
 
+  /**
+   * Sends the current real-time user state to all other clients
+   * This includes the own user state and the states of all other users
+   */
   public sendCompleteStateToClient(): void {
     if (!this.messageTransporter.isReady()) {
       return;
@@ -126,29 +153,4 @@ export class RealtimeUserStatusAdapter {
       },
     });
   }
-
-  private findLeastUsedStyleIndex(map: Map<number, number>): number {
-    let leastUsedStyleIndex = 0;
-    let leastUsedStyleIndexCount = map.get(0) ?? 0;
-    for (let styleIndex = 0; styleIndex < 8; styleIndex++) {
-      const count = map.get(styleIndex) ?? 0;
-      if (count < leastUsedStyleIndexCount) {
-        leastUsedStyleIndexCount = count;
-        leastUsedStyleIndex = styleIndex;
-      }
-    }
-    return leastUsedStyleIndex;
-  }
-
-  private createStyleIndexToCountMap(): Map<number, number> {
-    return this.collectOtherAdapters()
-      .map((adapter) => adapter.realtimeUser.styleIndex)
-      .reduce((map, styleIndex) => {
-        if (styleIndex !== undefined) {
-          const count = (map.get(styleIndex) ?? 0) + 1;
-          map.set(styleIndex, count);
-        }
-        return map;
-      }, new Map<number, number>());
-  }
 }

backend/src/realtime/realtime-note/test-utils/mock-connection.ts

@@ -42,7 +42,7 @@ export class MockConnectionBuilder {
   public withGuestUser(displayName: string): this {
     this.username = null;
     this.displayName = displayName;
-    this.authorStyle = 8;
+    this.authorStyle = 2;
     this.userId = 1000;
     return this;
   }
@@ -50,7 +50,7 @@ export class MockConnectionBuilder {
   /**
    * Defines that the user who belongs to this connection is a logged-in user.
    *
-   * @param username the username of the mocked user. If this value is omitted then the builder will user a {@link MOCK_FALLBACK_USERNAME fallback}.
+   * @param username the username of the mocked user
    */
   public withLoggedInUser(username: string): this {
     this.username = username;
@@ -79,7 +79,7 @@ export class MockConnectionBuilder {
   /**
    * Creates a new connection based on the given configuration.
    *
-   * @returns {RealtimeConnection} The constructed mocked connection
+   * @returns The constructed mocked connection
    * @throws Error if neither withGuestUser nor withLoggedInUser has been called.
    */
   public build(): RealtimeConnection {

backend/src/realtime/realtime-note/test-utils/mock-message-transporter.ts

@@ -1,12 +1,12 @@
 /*
- * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 import { MessageTransporter, MessageType } from '@hedgedoc/commons';
 
 /**
- * A message transporter that is only used in testing where certain conditions like resending of requests isn't needed.
+ * A message transporter that is only used in testing where certain conditions like resending of requests aren't needed.
  */
 export class MockMessageTransporter extends MessageTransporter {
   protected startSendingOfReadyRequests(): void {

backend/src/revisions/revisions.service.ts

@@ -194,6 +194,13 @@ export class RevisionsService {
     });
   }
 
+  /**
+   * Get a revision by its UUID
+   *
+   * @param revisionUuid The UUID of the revision to get
+   * @returns The revision DTO
+   * @throws NotInDBError if the revision with the given UUID does not exist
+   */
   async getRevisionDto(revisionUuid: string): Promise<RevisionDto> {
     const revision = await this.knex(TableRevision)
       .select(
@@ -225,9 +232,10 @@ export class RevisionsService {
   }
 
   /**
-   * Get the latest
-   * @param noteId
-   * @param transaction
+   * Gets the latest revision of a note
+   *
+   * @param noteId The id of the note for which the latest revision should be retrieved
+   * @param transaction The optional pre-existing database transaction to use
    */
   async getLatestRevision(
     noteId: number,
@@ -249,6 +257,13 @@ export class RevisionsService {
     return revision;
   }
 
+  /**
+   * Gets the user information of the authors of a revision
+   *
+   * @param revisionUuid The UUID of the revision for which the user information should be retrieved
+   * @param transaction The optional pre-existing database transaction to use
+   * @returns An object containing the usernames and guest UUIDs of the authors and the count of guest users
+   */
   async getRevisionUserInfo(
     revisionUuid: string,
     transaction?: Knex,
@@ -291,17 +306,15 @@ export class RevisionsService {
   }
 
   /**
-   * Creates (but does not persist(!)) a new {@link Revision} for the given {@link Note}.
-   * Useful if the revision is saved together with the note in one action.
-   *
+   * Creates a new revision for the given note
+   * This method wraps the actual action in a database transaction
    *
    * @param noteId The note for which the revision should be created
    * @param newContent The new note content
    * @param firstRevision Whether this is called for the first revision of a note
    * @param transaction The optional pre-existing database transaction to use
    * @param yjsStateVector The yjs state vector that describes the new content
-   * @returns {Revision} the created revision
-   * @returns {undefined} if the revision couldn't be created because e.g. the content hasn't changed
+   * @returns the created revision or undefined if the revision couldn't be created
    */
   async createRevision(
     noteId: number,
@@ -331,6 +344,16 @@ export class RevisionsService {
     );
   }
 
+  /**
+   * Internal method to create a revision for the given note
+   * This method is used by the public createRevision method and should not be called directly
+   *
+   * @param noteId The note for which the revision should be created
+   * @param newContent The new note content
+   * @param firstRevision Whether this is called for the first revision of a note
+   * @param transaction The database transaction to use
+   * @param yjsStateVector The yjs state vector that describes the new content
+   */
   private async innerCreateRevision(
     noteId: number,
     newContent: string,
@@ -388,6 +411,13 @@ export class RevisionsService {
     }
   }
 
+  /**
+   * Get all tags of a revision
+   *
+   * @param revisionUuid The UUID of the revision for which the tags should be retrieved
+   * @param transaction The optional pre-existing database transaction to use
+   * @returns An array of tags associated with the revision
+   */
   async getTagsByRevisionUuid(
     revisionUuid: string,
     transaction?: Knex,
@@ -412,7 +442,7 @@ export class RevisionsService {
   }
 
   /**
-   * Delete old {@link Revision}s except the latest one.
+   * Deletes old revisions except the latest one if the clean-up is enabled
    */
   async removeOldRevisions(): Promise<void> {
     const currentTime = new Date().getTime();

backend/src/revisions/utils/extract-revision-metadata-from-content.ts

@@ -29,9 +29,10 @@ interface FrontmatterParserResult {
 }
 
 /**
- * Parses the frontmatter of the given content and extracts the metadata that are necessary to create a new revision..
+ * Parses the frontmatter of the given content and extracts the metadata that are necessary to create a new revision
  *
- * @param content the revision content that contains the frontmatter.
+ * @param content the revision content that contains the frontmatter
+ * @returns the extracted metadata, including the title, description, tags, and note type
  */
 export function extractRevisionMetadataFromContent(
   content: string,
@@ -52,6 +53,13 @@ export function extractRevisionMetadataFromContent(
   return { title, description, tags, noteType };
 }
 
+/**
+ * Generates the content of a revision without the frontmatter.
+ *
+ * @param firstLineOfContentIndex the index of the first line of content after the frontmatter
+ * @param content the full content including frontmatter
+ * @returns the content without frontmatter
+ */
 function generateContentWithoutFrontmatter(
   firstLineOfContentIndex: number | undefined,
   content: string,
@@ -61,6 +69,12 @@ function generateContentWithoutFrontmatter(
     : content.split('\n').slice(firstLineOfContentIndex).join('\n');
 }
 
+/**
+ * Parses the frontmatter from the given content and returns the parsed frontmatter and the index of the first line of content.
+ *
+ * @param content the content to parse
+ * @returns an object containing the parsed frontmatter and the index of the first line of content, or undefined if no frontmatter was found
+ */
 function parseFrontmatter(
   content: string,
 ): FrontmatterParserResult | undefined {
@@ -82,6 +96,12 @@ function parseFrontmatter(
   };
 }
 
+/**
+ * Extracts the first heading from the given markdown content
+ *
+ * @param content the content to extract the first heading from
+ * @returns the first heading or undefined if no heading was found
+ */
 function extractFirstHeadingFromContent(content: string): string | undefined {
   const markdownIt = new MarkdownIt('default');
   const html = markdownIt.render(content);

backend/src/sessions/session.service.ts

@@ -60,7 +60,7 @@ export class SessionService {
   }
 
   /**
-   * Extracts the hedgedoc session cookie from the given {@link IncomingMessage request} and checks if the signature is correct.
+   * Extracts the HedgeDoc session cookie from the given {@link IncomingMessage request} and checks if the signature is correct.
    *
    * @param request The http request that contains a session cookie
    * @returns An {@link Optional optional} that either contains the extracted session id or is empty if no session cookie has been found

backend/src/users/random-word-lists/name-randomizer.spec.ts

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */

backend/src/users/random-word-lists/name-randomizer.ts

@@ -6,7 +6,7 @@
 import { adjectives, items } from './random-words';
 
 /**
- * Generates a random names based on an adjective and a noun.
+ * Generates a random name based on an adjective and a noun
  *
  * @returns the generated name
  */
@@ -16,6 +16,12 @@ export function generateRandomName(): string {
   return `${adjective} ${things}`;
 }
 
+/**
+ * Generates a random word from a given list and capitalizes the first letter
+ *
+ * @param list - The list of words to choose from
+ * @returns a randomly selected word with the first letter capitalized
+ */
 function generateRandomWord(list: string[]): string {
   const index = Math.floor(Math.random() * list.length);
   const word = list[index];

backend/src/users/random-word-lists/random-words.ts

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */

backend/src/users/users.service.ts

@@ -23,7 +23,7 @@ import { v4 as uuidv4 } from 'uuid';
 
 import { GenericDBError, NotInDBError } from '../errors/errors';
 import { ConsoleLoggerService } from '../logger/console-logger.service';
-import { generateRandomName } from '../realtime/realtime-note/random-word-lists/name-randomizer';
+import { generateRandomName } from './random-word-lists/name-randomizer';
 
 @Injectable()
 export class UsersService {
@@ -41,13 +41,13 @@ export class UsersService {
    *
    * @param username New user's username
    * @param displayName New user's displayName
-   * @param [email] New user's email address if exists
-   * @param [photoUrl] URL of the user's profile picture if exists
+   * @param email New user's email address if exists
+   * @param photoUrl URL of the user's profile picture if exists
    * @param transaction The optional transaction to access the db
    * @returns The id of newly created user
-   * @throws {BadRequestException} if the username contains invalid characters or is too short
-   * @throws {AlreadyInDBError} the username is already taken.
-   * @thorws {GenericDBError} the database returned a non-expected value
+   * @throws BadRequestException if the username contains invalid characters or is too short
+   * @throws AlreadyInDBError if the username is already taken
+   * @thorws GenericDBError if the database returned a non-expected value
    */
   async createUser(
     username: string,
@@ -97,7 +97,7 @@ export class UsersService {
    * Creates a new guest user with a random displayName
    *
    * @returns The guest uuid and the id of the newly created user
-   * @throws {GenericDBError} the database returned a non-expected value
+   * @throws GenericDBError if the database returned a non-expected value
    */
   async createGuestUser(): Promise<[string, number]> {
     const randomName = generateRandomName();
@@ -128,7 +128,7 @@ export class UsersService {
    * Deletes a user by its id
    *
    * @param userId id of the user to be deleted
-   * @throws {NotInDBError} the username has no user associated with it
+   * @throws NotInDBError if the username has no user associated with it
    */
   async deleteUser(userId: number): Promise<void> {
     const usersDeleted = await this.knex(TableUser)
@@ -229,7 +229,7 @@ export class UsersService {
    *
    * @param username The username to fetch
    * @returns The found user object
-   * @throws {NotInDBError} if the user could not be found
+   * @throws NotInDBError if the user could not be found
    */
   async getUserIdByUsername(username: string): Promise<number> {
     const userId = await this.knex(TableUser)
@@ -247,11 +247,11 @@ export class UsersService {
   }
 
   /**
-   * Fetches the userId for a given username from the database
+   * Fetches the userId for a given guest uuid from the database
    *
-   * @param uuid The uuid to fetch
+   * @param uuid The guest uuid to fetch
    * @returns The found user object
-   * @throws {NotInDBError} if the user could not be found
+   * @throws NotInDBError if the guest user could not be found
    */
   async getUserIdByGuestUuid(uuid: string): Promise<User[FieldNameUser.id]> {
     const userId = await this.knex(TableUser)
@@ -273,7 +273,7 @@ export class UsersService {
    *
    * @param username The username to fetch
    * @returns The found user object
-   * @throws {NotInDBError} if the user could not be found
+   * @throws NotInDBError if the user could not be found
    */
   async getUserDtoByUsername(username: string): Promise<UserInfoDto> {
     const user = await this.knex(TableUser)

backend/src/utils/array-duplicate-check.ts

@@ -1,9 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export function hasArrayDuplicates<T>(array: Array<T>): boolean {
-  return new Set(array).size !== array.length;
-}

backend/src/utils/base.dto.ts

@@ -1,10 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-/**
- * The base class for all DTOs.
- */
-export abstract class BaseDto {}

backend/src/utils/password.ts

@@ -37,11 +37,11 @@ export async function checkPassword(
 }
 
 /**
- * Transform a {@link Buffer} into a base64Url encoded string
+ * Transforms a {@link Buffer} into a base64Url encoded string
  *
- * This is necessary as the is no base64url encoding in the toString method
+ * This is necessary as there is no base64url encoding in the toString method
  * but as can be seen on https://tools.ietf.org/html/rfc4648#page-7
- * base64url is quite easy buildable from base64
+ * base64url is quite easily buildable from base64
  *
  * @param text The buffer we want to decode
  * @returns The base64Url encoded string
@@ -73,7 +73,7 @@ export function hashApiToken(token: string): string {
  *
  * @param userSecret The secret of the token the user gave us
  * @param databaseSecretHash The secret hash we have saved in the database.
- * @returns Wether or not the tokens are the equal
+ * @returns Whether or not the tokens are equal
  */
 export function checkTokenEquality(
   userSecret: string,

backend/src/utils/server-version.ts

@@ -11,10 +11,10 @@ import { join as joinPath } from 'path';
 let versionCache: ServerVersionDto | undefined = undefined;
 
 /**
- * Reads the HedgeDoc version from the root package.json. This is done only once per run.
+ * Reads the HedgeDoc version from the root package.json. This is done only once per run and then cached for further calls
  *
- * @returns {Promise<ServerVersionDto>} A Promise that contains the parsed server version.
- * @throws {Error} if the package.json couldn't be found or doesn't contain a correct version.
+ * @returns A Promise that contains the parsed server version.
+ * @throws Error if the package.json couldn't be found or doesn't contain a correct version.
  */
 export async function getServerVersionFromPackageJson(): Promise<ServerVersionDto> {
   if (!versionCache) {
@@ -23,6 +23,12 @@ export async function getServerVersionFromPackageJson(): Promise<ServerVersionDt
   return versionCache;
 }
 
+/**
+ * Parses the version from the root package.json file.
+ *
+ * @returns A Promise that contains the parsed server version.
+ * @throws Error if the package.json couldn't be found or doesn't contain a correct version.
+ */
 async function parseVersionFromPackageJson(): Promise<ServerVersionDto> {
   const rawFileContent: string = await fs.readFile(
     joinPath(__dirname, '../../../package.json'),
@@ -47,6 +53,11 @@ async function parseVersionFromPackageJson(): Promise<ServerVersionDto> {
   };
 }
 
+/**
+ * Clears the cached version information
+ *
+ * This function is useful for testing purposes or when the version information needs to be reloaded
+ */
 export function clearCachedVersion(): void {
   versionCache = undefined;
 }

backend/src/utils/swagger.ts

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2024 The HedgeDoc developers (see AUTHORS file)
+ * SPDX-FileCopyrightText: 2025 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */
@@ -10,6 +10,11 @@ import { PrivateApiModule } from '../api/private/private-api.module';
 import { PublicApiModule } from '../api/public/public-api.module';
 import { getServerVersionFromPackageJson } from './server-version';
 
+/**
+ * Sets up the public API documentation for HedgeDoc.
+ *
+ * @param app The NestJS application instance to set up the Swagger module on.
+ */
 export async function setupPublicApiDocs(app: INestApplication): Promise<void> {
   const version = await getServerVersionFromPackageJson();
   const publicApiOptions = new DocumentBuilder()
@@ -26,6 +31,11 @@ export async function setupPublicApiDocs(app: INestApplication): Promise<void> {
   SwaggerModule.setup('api/doc/v2', app, publicApi);
 }
 
+/**
+ * Sets up the private API documentation for HedgeDoc.
+ *
+ * @param app The NestJS application instance to set up the Swagger module on.
+ */
 export async function setupPrivateApiDocs(
   app: INestApplication,
 ): Promise<void> {