enhanced client results and export functionality with coach and supervisor details, added date filters for results

lib/repositories/ResultRepo.php

@@ -53,10 +53,14 @@ class ResultRepo
 
         $sql = "
             SELECT cl.clientCode, cl.coachID,
+                   co.username AS coachUsername,
+                   sv.username AS supervisorUsername,
                    cq.status, cq.startedAt, cq.completedAt, cq.sumPoints, cq.assignedByCoach
             FROM client cl
             INNER JOIN completed_questionnaire cq
                 ON cq.clientCode = cl.clientCode AND cq.questionnaireID = :qnid
+            LEFT JOIN coach co ON co.coachID = cl.coachID
+            LEFT JOIN supervisor sv ON sv.supervisorID = co.supervisorID
             WHERE $rbacClause
         ";
         $params = array_merge([':qnid' => $questionnaireID], $rbacParams);