Add SQL query for insert citizen with user

src/main/kotlin/fr/dcproject/repository/Citizen.kt

@@ -11,9 +11,10 @@ import fr.dcproject.entity.Citizen as CitizenEntity
 class Citizen(override var requester: Requester) : RepositoryI<CitizenEntity> {
     override val entityName = CitizenEntity::class
 
-    fun findById(id: UUID): CitizenEntity? {
-        val function = requester.getFunction("find_citizen_by_id")
-        return function.selectOne("id" to id)
+    fun findById(id: UUID, withUser: Boolean = false): CitizenEntity? {
+        return requester
+            .getFunction(if (withUser) "find_citizen_by_id_with_user" else "find_citizen_by_id")
+            .selectOne("id" to id)
     }
 
     fun find(
@@ -38,4 +39,10 @@ class Citizen(override var requester: Requester) : RepositoryI<CitizenEntity> {
             .getFunction("upsert_citizen")
             .selectOne("resource" to citizen)
     }
+
+    fun createWithUser(citizen: CitizenEntity): CitizenEntity? {
+        return requester
+            .getFunction("insert_citizen_with_user")
+            .selectOne("resource" to citizen)
+    }
 }

src/main/resources/sql/functions/citizen/find_citizen_by_id_with_user.sql

@@ -0,0 +1,18 @@
+create or replace function find_citizen_by_id_with_user(in id uuid, out resource json) language plpgsql as
+$$
+declare
+    _id alias for id;
+begin
+    select to_json(t) into resource
+    from (
+         select 
+            z.*,
+            u as "user"
+         from citizen as z
+         join "user" u on z.user_id = u.id
+         where z.id = _id
+     ) as t;
+end;
+$$;
+
+-- drop function if exists find_citizen_by_id_with_user(uuid, inout json);

src/main/resources/sql/functions/citizen/insert_citizen_with_user.sql

@@ -0,0 +1,31 @@
+create or replace function insert_citizen_with_user(inout resource json)
+    language plpgsql as
+$$
+declare
+    new_id        uuid;
+    inserted_user json;
+begin
+    select insert_user(resource->'user') into inserted_user;
+
+    insert into citizen (id, name, birthday, user_id, vote_annonymous, follow_annonymous)
+    select
+       coalesce(id, uuid_generate_v4()),
+       name,
+       birthday,
+       (inserted_user->>'id')::uuid,
+       coalesce(vote_annonymous, true),
+       coalesce(follow_annonymous, true)
+    from json_populate_record(null::citizen, resource)
+    on conflict (id) do update set
+        name = excluded.name,
+        birthday = excluded.birthday,
+        user_id = excluded.user_id,
+        vote_annonymous = excluded.vote_annonymous,
+        follow_annonymous = excluded.follow_annonymous
+    returning id into new_id;
+
+    select find_citizen_by_id_with_user(new_id) into resource;
+end;
+$$;
+
+-- drop function if exists create_citizen_with_user(inout json);