Voucher: Added calculation start time

config/config.default.php

@@ -138,6 +138,8 @@ return [
     'voucher_settings'        => [
         'initial_vouchers'   => 0,
         'shifts_per_voucher' => 1,
+        // 'Y-m-d' formatted
+        'voucher_start'      => null,
     ],
 
     // Available locales in /locale/

includes/model/ShiftEntry_model.php

@@ -1,5 +1,6 @@
 <?php
 
+use Carbon\Carbon;
 use Engelsystem\Database\DB;
 use Engelsystem\Models\User\User;
 
@@ -202,9 +203,10 @@ function ShiftEntries_upcoming_for_user($userId)
  * Returns shifts completed by the given user.
  *
  * @param int         $userId
+ * @param Carbon|null $sinceTime
  * @return array
  */
-function ShiftEntries_finished_by_user($userId)
+function ShiftEntries_finished_by_user($userId, Carbon $sinceTime = null)
 {
     return DB::select('
           SELECT *
@@ -214,6 +216,7 @@ function ShiftEntries_finished_by_user($userId)
           WHERE `ShiftEntry`.`UID` = ?
           AND `Shifts`.`end` < ?
           AND `ShiftEntry`.`freeloaded` = 0
+          ' . ($sinceTime ? 'AND Shifts.start >= ' . $sinceTime->getTimestamp() : '') . '
           ORDER BY `Shifts`.`end` desc
       ',
         [

includes/model/User_model.php

@@ -233,7 +233,10 @@ function User_reset_api_key($user, $log = true)
 function User_get_eligable_voucher_count($user)
 {
     $voucher_settings = config('voucher_settings');
-    $shifts_done = count(ShiftEntries_finished_by_user($user->id));
+    $start = $voucher_settings['voucher_start']
+        ? Carbon::createFromFormat('Y-m-d', $voucher_settings['voucher_start'])->setTime(0, 0)
+        : null;
+    $shifts_done = count(ShiftEntries_finished_by_user($user->id, $start));
 
     $earned_vouchers = $user->state->got_voucher - $voucher_settings['initial_vouchers'];
     $eligable_vouchers = $shifts_done / $voucher_settings['shifts_per_voucher'] - $earned_vouchers;