NoteMetadata DTOs: Add doc comments

Signed-off-by: David Mehren <git@herrmehren.de>

src/notes/note-metadata.dto.ts

@@ -8,6 +8,7 @@ import {
   IsArray,
   IsDate,
   IsNumber,
+  IsOptional,
   IsString,
   ValidateNested,
 } from 'class-validator';
@@ -15,37 +16,107 @@ import { UserInfoDto } from '../users/user-info.dto';
 import { NotePermissionsDto } from './note-permissions.dto';
 
 export class NoteMetadataDto {
+  /**
+   * ID of the note
+   */
   @IsString()
   id: string;
+
+  /**
+   * Alias of the note
+   * Can be null
+   */
   @IsString()
+  @IsOptional()
   alias: string;
+
+  /**
+   * Title of the note
+   * Does not contain any markup but might be empty
+   * @example "Shopping List"
+   */
   @IsString()
   title: string;
+
+  /**
+   * Description of the note
+   * Does not contain any markup but might be empty
+   * @example Everything I want to buy
+   */
   @IsString()
   description: string;
+
+  /**
+   * List of tags assigned to this note
+   * @example "['shopping', 'personal']
+   */
   @IsArray()
   @IsString({ each: true })
   tags: string[];
+
+  /**
+   * Datestring of the last time this note was updated
+   * @example "2020-12-01 12:23:34"
+   */
   @IsDate()
   updateTime: Date;
+
+  /**
+   * User that last edited the note
+   */
   @ValidateNested()
   updateUser: UserInfoDto;
+
+  /**
+   * Counts how many times the published note has been viewed
+   * @example 42
+   */
   @IsNumber()
   viewCount: number;
+
+  /**
+   * Datestring of the time this note was created
+   * @example "2020-12-01 12:23:34"
+   */
   @IsDate()
   createTime: Date;
+
+  /**
+   * List of usernames that edited the note
+   * @example "['john.smith', 'jane.smith']"
+   */
   @IsArray()
   @ValidateNested()
   editedBy: UserInfoDto['userName'][];
+
+  /**
+   * Permissions currently in effect for the note
+   */
   @ValidateNested()
   permissions: NotePermissionsDto;
 }
 
 export class NoteMetadataUpdateDto {
+  /**
+   * New title of the note
+   * Can not contain any markup and might be empty
+   * @example "Shopping List"
+   */
   @IsString()
   title: string;
+
+  /**
+   * New description of the note
+   * Can not contain any markup but might be empty
+   * @example Everything I want to buy
+   */
   @IsString()
   description: string;
+
+  /**
+   * New list of tags assigned to this note
+   * @example "['shopping', 'personal']
+   */
   @IsArray()
   @IsString({ each: true })
   tags: string[];