feature #6: implement route for search articles

resources/logback.xml

@@ -4,7 +4,7 @@
             <pattern>%d{YYYY-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
         </encoder>
     </appender>
-    <root level="trace">
+    <root level="debug">
         <appender-ref ref="STDOUT"/>
     </root>
     <logger name="org.eclipse.jetty" level="INFO"/>

resources/sql/functions/article/find_article_by_id.sql

@@ -16,5 +16,3 @@ end;
 $$;
 
 -- drop function if exists find_article_by_id(uuid, out json);
-
-select find_article_by_id('12fed2f3-2a7d-434b-87e6-5a9895f9d12d')

resources/sql/functions/article/find_articles.sql

@@ -0,0 +1,41 @@
+create or replace function find_articles(
+    search text default null,
+    direction text default 'desc',
+    sort text default 'created_at',
+    "limit" int default 50,
+    "offset" int default 0,
+    out resource json,
+    out total int
+) language plpgsql as
+$$
+begin
+    select json_agg(t), (select count(id) from article)
+    into resource, total
+    from (
+        select
+            a.*,
+            find_citizen_by_id(a.created_by_id) as created_by
+        from article as a
+        where title ilike '%'||"search"||'%'
+        order by
+        case direction when 'asc' then
+            case sort
+                when 'title' then a.title
+                when 'created_at' then a.created_at::text
+                else null
+            end
+        end,
+        case direction when 'desc' then
+            case sort
+                when 'title' then a.title
+                when 'created_at' then a.created_at::text
+            end
+        end
+        desc,
+        a.created_at desc
+        limit "limit" offset "offset"
+    ) as t;
+end;
+$$;
+
+-- drop function if exists find_articles(json, int, int);

resources/sql/functions/citizen/find_citizen_by_id.sql

@@ -6,8 +6,7 @@ begin
     select to_json(t) into resource
     from (
          select 
-            z.*, 
-            find_user_by_id(z.user_id) as "user"
+            z.*
          from citizen as z
          where z.id = _id
      ) as t;