feat: better validation for post

libraries/helpers/src/utils/valid.images.ts

@@ -0,0 +1,28 @@
+import {
+  ValidationArguments,
+  ValidatorConstraintInterface,
+  ValidatorConstraint,
+} from 'class-validator';
+import striptags from 'striptags';
+
+@ValidatorConstraint({ name: 'validateContent', async: false })
+export class ValidContent implements ValidatorConstraintInterface {
+  validate(contentRaw: string, args: ValidationArguments) {
+    console.log(args.object);
+    const content = striptags(contentRaw || '');
+    if (
+      // @ts-ignore
+      (!args?.object?.image || !Array.isArray(args?.object?.image) || !args?.object?.image.length) &&
+      (!content || typeof content !== 'string' || content?.trim() === '')
+    ) {
+      return false;
+    }
+
+    return true;
+  }
+
+  defaultMessage(args: ValidationArguments) {
+    // here you can provide default error message if validation failed
+    return ' If images do not exist, content must be a non-empty string.';
+  }
+}

libraries/nestjs-libraries/src/dtos/posts/create.post.dto.ts

@@ -1,20 +1,10 @@
 import {
-  ArrayMinSize,
-  IsArray,
-  IsBoolean,
-  IsDateString,
-  IsDefined,
-  IsIn,
-  IsNumber,
-  IsOptional,
-  IsString,
-  MinLength,
-  ValidateIf,
-  ValidateNested,
+  ArrayMinSize, IsArray, IsBoolean, IsDateString, IsDefined, IsIn, IsNumber, IsOptional, IsString, MinLength, Validate, ValidateIf, ValidateNested
 } from 'class-validator';
 import { Type } from 'class-transformer';
 import { MediaDto } from '@gitroom/nestjs-libraries/dtos/media/media.dto';
 import { allProviders, type AllProvidersSettings, EmptySettings } from '@gitroom/nestjs-libraries/dtos/posts/providers-settings/all.providers.settings';
+import { ValidContent } from '@gitroom/helpers/utils/valid.images';
 
 export class Integration {
   @IsDefined()
@@ -25,6 +15,7 @@ export class Integration {
 export class PostContent {
   @IsDefined()
   @IsString()
+  @Validate(ValidContent)
   content: string;
 
   @IsOptional()
@@ -32,7 +23,6 @@ export class PostContent {
   id: string;
 
   @IsArray()
-  @IsOptional()
   @Type(() => MediaDto)
   @ValidateNested({ each: true })
   image: MediaDto[];