Blog Image Id is retrieving differently via headless API

Issue

• Steps to reproduce:
  1. Start Liferay DXP 7.4.
  2. Navigate to Content & Data > Blogs.
  3. Create one blog.
  4. Now, navigate to localhost:8080/o/api.
  5. Execute this request under BlogPostingImage:
  Get /v1.0/sites/{site-id}/blog-postings-images
  

  After executing this request, you'll receive the following response body: Note the "id".

  { 
  "contentUrl": "/documents/34933/34935/Import.png/5a907d7d-df27-c701-5b08-8460e3daecdd?version=1.0&t=1688469903434", 
  "encodingFormat": "image/png", 
  "fileExtension": "png", 
  "id": 34936, 
  "sizeInBytes": 42586, 
  "title": "Import.png" 
  }

  6. Now, execute this request:
  Get /v1.0/sites/{site-id}/blog-postings under headless-delivery/v1.0

  After executing this request, you'll receive the following response body: Note the "image-id".

  "image": { 
  "caption": "<p>Caption</p>", 
  "contentUrl": "/documents/d/guest/import-png-1", 
  "imageId": 34950 
  },

  Actual Result: The blog image id is retrieved differently in steps 5 and step 6.
  Expected Result: The blog image id must be the same by fetching the blog contents from the following APIs:
  Get /v1.0/sites/{site-id}/blog-posting-images.
  Get /v1.0/sites/{site-id}/blog-postings under headless-delivery/v1.0.

Environment

• Liferay DXP 7.4

Resolution

• The 'id' and 'imageid' retrieval via headless API is the expected behavior of the product. The reason behind this is that in the following APIs, we're retrieving the different elements:
  

  Get /v1.0/sites/{site-id}/blog-posting-images
  Get /v1.0/sites/{site-id}/blog-postings 

• Regarding (Get /v1.0/sites/{site-id}/blog-posting-images) request:
  
  • The blog-posting-images request will show a list of the images uploaded to the blog's repository, which means All the ORIGINAL Images sent to the BLOGS repository. 
  • In this case, the id is the ID of the files that could be seen in the Images tab of the Blogs portlet.
  • Users can also verify this by checking the filentryid column of the dlfilentry table.
• Regarding (Get /v1.0/sites/{site-id}/blog-postings) request:
  
  • The blog-posting shows a list of blog entries.
  • In this case, the image id is the id of the image used as the Cover Image of each blog entry. It is a cropped copy of the original Image updated to the BLOGS repository.
  • Users can also verify this by checking the coverimagefileentryid column of the blogsentrytable.