fix filter purchase ?approval_status=approved,rejected and ?product_category_id=1,2,3

internal/modules/purchases/services/purchase.service.go

@@ -175,7 +175,6 @@ func (s *purchaseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]enti
 	for i := range approvalStatuses {
 		approvalStatuses[i] = normalizeApprovalStatusFilter(approvalStatuses[i])
 	}
-	approvalStatus := normalizeApprovalStatusFilter(params.ApprovalStatus)
 
 	purchases, total, err := s.PurchaseRepo.GetAll(c.Context(), offset, params.Limit, func(db *gorm.DB) *gorm.DB {
 		db = s.withRelations(db)
@@ -326,34 +325,41 @@ func (s *purchaseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]enti
 			)
 		}
 
-		if approvalStatus != "" {
-			approvalLike := "%" + approvalStatus + "%"
-			db = db.Where(
-				`EXISTS (
-					SELECT 1
-					FROM approvals a
-					WHERE a.approvable_type = ?
-						AND a.approvable_id = purchases.id
-						AND a.id = (
-							SELECT a2.id
-							FROM approvals a2
-							WHERE a2.approvable_type = ?
-								AND a2.approvable_id = purchases.id
-							ORDER BY a2.action_at DESC, a2.id DESC
-							LIMIT 1
-						)
-						AND (
-							LOWER(COALESCE(a.step_name, '')) LIKE ?
-							OR LOWER(COALESCE(CAST(a.action AS TEXT), '')) LIKE ?
-							OR CAST(a.step_number AS TEXT) = ?
-						)
-				)`,
-				utils.ApprovalWorkflowPurchase.String(),
-				utils.ApprovalWorkflowPurchase.String(),
-				approvalLike,
-				approvalLike,
-				approvalStatus,
-			)
+		if len(approvalStatuses) > 0 {
+			approvalConditions := make([]string, 0, len(approvalStatuses))
+			approvalArgs := make([]any, 0, 2+(len(approvalStatuses)*3))
+			approvalArgs = append(approvalArgs, utils.ApprovalWorkflowPurchase.String(), utils.ApprovalWorkflowPurchase.String())
+			for _, status := range approvalStatuses {
+				if status == "" {
+					continue
+				}
+				like := "%" + status + "%"
+				approvalConditions = append(approvalConditions, `(LOWER(COALESCE(a.step_name, '')) LIKE ? OR LOWER(COALESCE(CAST(a.action AS TEXT), '')) LIKE ? OR CAST(a.step_number AS TEXT) = ?)`)
+				approvalArgs = append(approvalArgs, like, like, status)
+			}
+
+			if len(approvalConditions) > 0 {
+				approvalClause := strings.Join(approvalConditions, " OR ")
+				approvalQuery := fmt.Sprintf(
+					`EXISTS (
+						SELECT 1
+						FROM approvals a
+						WHERE a.approvable_type = ?
+							AND a.approvable_id = purchases.id
+							AND a.id = (
+								SELECT a2.id
+								FROM approvals a2
+								WHERE a2.approvable_type = ?
+									AND a2.approvable_id = purchases.id
+								ORDER BY a2.action_at DESC, a2.id DESC
+								LIMIT 1
+							)
+							AND (%s)
+					)`,
+					approvalClause,
+				)
+				db = db.Where(approvalQuery, approvalArgs...)
+			}
 		}
 
 		if search != "" {