feat: organisation home page with analytics (#532)

supabase/migrations/20241016235827_student_analytics.sql

@@ -52,11 +52,12 @@ CREATE OR REPLACE FUNCTION public.insert_login_event_on_user_session_update()
  SECURITY DEFINER
 AS $function$
 BEGIN
-  IF (NEW.updated_at IS NOT NULL) THEN
+  IF (NEW.updated_at IS NOT NULL AND NEW.updated_at != OLD.updated_at) THEN
     INSERT INTO public.analytics_login_events (logged_in_at, user_id)
     VALUES (NEW.updated_at, NEW.user_id)
     ON CONFLICT (user_id) DO UPDATE
-    SET logged_in_at = NEW.updated_at;
+    SET logged_in_at = EXCLUDED.logged_in_at
+    WHERE analytics_login_events.logged_in_at < EXCLUDED.logged_in_at;
   END IF;
   RETURN NEW;
 END;

supabase/migrations/20241231154543_dashboard_stats.sql

@@ -0,0 +1,79 @@
+set check_function_bodies = off;
+
+create or replace view "public"."dash_org_stats" as  SELECT gp.organization_id AS org_id,
+    count(DISTINCT course.id) AS no_of_courses,
+    count(DISTINCT gm.profile_id) AS enrolled_students
+   FROM ((course
+     JOIN "group" gp ON ((gp.id = course.group_id)))
+     LEFT JOIN groupmember gm ON (((gm.group_id = gp.id) AND (gm.role_id = 3))))
+  WHERE (course.status = 'ACTIVE'::text)
+  GROUP BY gp.organization_id;
+
+
+CREATE OR REPLACE FUNCTION public.get_dash_org_recent_enrollments(org_id_arg uuid)
+ RETURNS TABLE(profile_id uuid, avatar_url text, fullname text, course_id uuid, course_title character varying, enrolled_at timestamp with time zone)
+ LANGUAGE plpgsql
+AS $function$
+BEGIN
+    RETURN QUERY
+    SELECT 
+        p.id,
+        p.avatar_url,
+        p.fullname,
+        course.id,
+        course.title,
+        gm.created_at as enrolled_at
+    FROM
+        course
+        JOIN "group" as gp ON gp.id = course.group_id
+        LEFT JOIN groupmember as gm ON gm.group_id = gp.id AND gm.role_id = 3
+        JOIN profile as p ON p.id = gm.profile_id
+    WHERE 
+        course.status = 'ACTIVE' 
+        AND gp.organization_id = org_id_arg
+    GROUP BY 
+        p.id,
+        course.id,
+        course.title,
+        enrolled_at
+    ORDER BY 
+        enrolled_at DESC
+    LIMIT 5;
+END;
+$function$
+;
+
+CREATE OR REPLACE FUNCTION public.get_dash_org_top_courses(org_id_arg uuid)
+ RETURNS TABLE(course_id uuid, course_title character varying, total_students integer, completion_percentage integer)
+ LANGUAGE plpgsql
+AS $function$
+BEGIN
+  RETURN QUERY
+SELECT 
+    course_stats.course_id,
+    course_stats.course_title,
+    course_stats.total_students::integer,
+    CASE 
+      WHEN course_stats.total_students * course_stats.total_lessons = 0 THEN 0
+      ELSE ROUND((course_stats.completed_lessons::numeric / (course_stats.total_students * course_stats.total_lessons)) * 100)::integer
+    END as completion_percentage
+  FROM (
+    SELECT 
+      c.id as course_id,
+      c.title as course_title,
+      COUNT(DISTINCT gm.id) as total_students,
+      COUNT(DISTINCT l.id) as total_lessons,
+      COUNT(DISTINCT lc.id) FILTER (WHERE lc.is_complete = true) as completed_lessons
+    FROM course c
+    JOIN "group" g ON g.id = c.group_id
+    LEFT JOIN groupmember gm ON gm.group_id = g.id and gm.role_id = 3
+    LEFT JOIN lesson l ON l.course_id = c.id
+    LEFT JOIN lesson_completion lc ON lc.lesson_id = l.id 
+      AND lc.profile_id = gm.profile_id
+    WHERE c.status = 'ACTIVE'  AND g.organization_id = org_id_arg
+    GROUP BY c.id, c.title
+  ) as course_stats
+  LIMIT 5;
+END;
+$function$
+;