can get comment children of an other comment

src/main/kotlin/fr/dcproject/entity/Comment.kt

@@ -10,7 +10,8 @@ open class Comment <T: UuidEntity> (
     var content: String,
     var responses: List<Comment<T>>? = null,
     var parent: Comment<T>? = null,
-    var parentsIds: List<UUID>? = null
+    var parentsIds: List<UUID>? = null,
+    val childrenCount: Int? = null
 ): Extra<T>(id, createdBy),
     EntityUpdatedAt by EntityUpdatedAtImp(),
     EntityDeletedAt by EntityDeletedAtImp()

src/main/kotlin/fr/dcproject/routes/Comment.kt

@@ -19,6 +19,17 @@ import fr.dcproject.repository.CommentGeneric as CommentRepository
 object CommentPaths {
     // TODO: change UUID by entity converter
     @Location("/comments/{comment}") class CommentRequest(val comment: UUID)
+
+    @Location("/comments/{comment}/children")
+    class CommentChildrenRequest(
+        val comment: UUID,
+        page: Int = 1,
+        limit: Int = 50,
+        val search: String? = null
+    ) {
+        val page: Int = if (page < 1) 1 else page
+        val limit: Int = if (limit > 50) 50 else if (limit < 1) 1 else limit
+    }
 }
 
 @KtorExperimentalLocationsAPI
@@ -30,6 +41,19 @@ fun Route.comment(repo: CommentRepository) {
         call.respond(HttpStatusCode.OK, comment)
     }
 
+    get<CommentPaths.CommentChildrenRequest> {
+        val comments =
+            repo.findByParent(
+                it.comment,
+                it.page,
+                it.limit
+            )
+
+        assertCan(VIEW, comments.result)
+
+        call.respond(HttpStatusCode.OK, comments)
+    }
+
     put<CommentPaths.CommentRequest> {
         val comment = repo.findById(it.comment)!!
         assertCan(UPDATE,comment)

src/main/resources/openApi.yaml

@@ -257,8 +257,17 @@ paths:
               schema:
                 $ref: '#/components/schemas/ConstitutionResponse'
   /comments/{comment}:
+    parameters:
+      - name: comment
+        in: path
+        description: The ID of comment
+        example: 701dc504-db49-7e3a-2c0a-32542507ea57
+        required: true
+        schema:
+          type: string
+          format: uuid
     get:
-      summary: Get Comment and children by Comment ID
+      summary: Get Comment by Comment ID
       tags:
         - comment
       responses:
@@ -286,6 +295,36 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/CommentResponse'
+
+  /comments/{comment}/children:
+    parameters:
+      - name: comment
+        in: path
+        description: The ID of comment
+        example: 701dc504-db49-7e3a-2c0a-32542507ea57
+        required: true
+        schema:
+          type: string
+          format: uuid
+    get:
+      summary: Get Comment children by Comment ID
+      tags:
+        - comment
+      responses:
+        200:
+          description: Return Comment children
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/Paginated'
+                  - type: object
+                    properties:
+                      result:
+                        type: array
+                        items:
+                          $ref: '#/components/schemas/CommentResponse'
+
   /articles/{article}/comments:
     parameters:
       - name: article
@@ -297,7 +336,7 @@ paths:
           type: string
           format: uuid
     get:
-      summary: Get comment and children of one article
+      summary: Get comments of one article
       tags:
         - comment
       responses:
@@ -547,7 +586,7 @@ components:
     CreatedBy:
       properties:
         created_by:
-          $ref: '#/components/schemas/UuidEntity'
+          $ref: '#/components/schemas/CitizenResponse'
 
     CreatedAt:
       properties:

src/main/resources/sql/functions/comment/find_comments_by_parent.sql

@@ -7,16 +7,17 @@ create or replace function find_comments_by_parent(
 ) language plpgsql as
 $$
 begin
-    select json_agg(t), (select count(id) from "comment" com where com.parents_ids @> array[_parent_id])
+    select json_agg(t), (select count(id) from "comment" c3 where c3.parent_id = _parent_id)
     into resource, total
     from (
         select
             com.*,
+            (select count(*) from "comment" c2 where c2.parents_ids @> array[com.id]) as children_count,
             find_reference_by_id(com.target_id, com.target_reference) as target,
             find_citizen_by_id(com.created_by_id) as created_by
         from "comment" as com
         where parent_id = _parent_id
-        order by com.parents_ids nulls first, created_at desc,
+        order by created_at desc,
         com.created_at desc
         limit "limit" offset "offset"
     ) as t;

src/main/resources/sql/functions/comment/find_comments_by_target.sql

@@ -7,16 +7,17 @@ create or replace function find_comments_by_target(
 ) language plpgsql as
 $$
 begin
-    select json_agg(t), (select count(id) from "comment" com where com.target_id = _target_id)
+    select json_agg(t), (select count(id) from "comment" c3 where c3.parent_id = _target_id)
     into resource, total
     from (
         select
             com.*,
+            (select count(*) from "comment" c2 where c2.parents_ids @> array[com.id]) as children_count,
             find_reference_by_id(com.target_id, com.target_reference) as target,
             find_citizen_by_id(com.created_by_id) as created_by
         from "comment" as com
-        where com.target_id = _target_id
-        order by com.parents_ids nulls first, created_at desc,
+        where com.parent_id = _target_id
+        order by created_at desc,
         com.created_at desc
         limit "limit" offset "offset"
     ) as t;