Add a mandatory comments block to a post | Gato GraphQL for WordPress

This query checks if block wp:comments has been added to the post indicated by variable $postId. If the block is missing, it then adds it at the bottom of the post.

This query requires the endpoint to have Nested Mutations enabled.

query CheckIfCommentsBlockExists($postId: ID!) {
  posts(
    filter: {
      ids: [$postId]
      status: any
      search: "\"<!-- /wp:comments -->\""
    }
  ) {
    id
    ...CommentBlocks
  }
  blockExists: _notEmpty(value: $__posts)
    @export(as: "blockExists")
}
 
mutation InsertCommentsBlockIfMissingInPost($postId: ID!)
  @depends(on: "CheckIfCommentsBlockExists")
  @skip(if: $blockExists)
{
  post(by: { id: $postId }, status: any) {
    id
    rawContent
    adaptedRawContent: _strAppend(
      after: $__rawContent
      append: """
 
<!-- wp:comments -->
<div class="wp-block-comments"><!-- wp:comments-title /-->
 
<!-- wp:comment-template -->
<!-- wp:columns -->
<div class="wp-block-columns"><!-- wp:column {"width":"40px"} -->
<div class="wp-block-column" style="flex-basis:40px"><!-- wp:avatar {"size":40,"style":{"border":{"radius":"20px"}}} /--></div>
<!-- /wp:column -->
 
<!-- wp:column -->
<div class="wp-block-column"><!-- wp:comment-author-name {"fontSize":"small"} /-->
 
<!-- wp:group {"style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}},"layout":{"type":"flex"}} -->
<div class="wp-block-group" style="margin-top:0px;margin-bottom:0px"><!-- wp:comment-date {"fontSize":"small"} /-->
 
<!-- wp:comment-edit-link {"fontSize":"small"} /--></div>
<!-- /wp:group -->
 
<!-- wp:comment-content /-->
 
<!-- wp:comment-reply-link {"fontSize":"small"} /--></div>
<!-- /wp:column --></div>
<!-- /wp:columns -->
<!-- /wp:comment-template -->
 
<!-- wp:comments-pagination -->
<!-- wp:comments-pagination-previous /-->
 
<!-- wp:comments-pagination-numbers /-->
 
<!-- wp:comments-pagination-next /-->
<!-- /wp:comments-pagination -->
 
<!-- wp:post-comments-form /--></div>
<!-- /wp:comments -->   
 
      """
    )
    update(input: {
      contentAs: { html: $__adaptedRawContent },
    }) {
      status
      errors {
        __typename
        ...on ErrorPayload {
          message
        }
      }
      post {
        id
        rawContent
        ...CommentBlocks
      }
    }
  }
}
 
fragment CommentBlocks on CustomPost {
  blocks(filterBy: { include: ["core/comments"] }) {
    ... on Block {
      name
      attributes
    }
  }
}