Initial Work on Client Account Credit System, DB Structure, Credit Balance Calculation, added Apply Credit and add Credit with Expire dates, Added DB Structure for Discount Codes, UI Rewrite on client top header now using grouped cards, more dark mode work as well

includes/inc_all_client.php

@@ -131,6 +131,12 @@ if (isset($_GET['client_id'])) {
 
         $recurring_monthly = $recurring_monthly_total + $recurring_yearly_total;
 
+        // Get Credit Balance
+        $sql_credit_balance = mysqli_query($mysqli, "SELECT SUM(credit_amount) AS credit_balance FROM credits WHERE credit_client_id = $client_id");
+        $row = mysqli_fetch_array($sql_credit_balance);
+
+        $credit_balance = floatval($row['credit_balance']);
+
         // Badge Counts
 
         $row = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT COUNT('contact_id') AS num FROM contacts WHERE contact_archived_at IS NULL AND contact_client_id = $client_id"));