#22 - wip

app/Domain/Validation/Rules/DoesNotExceedLimitRule.php

@@ -4,23 +4,64 @@ declare(strict_types=1);
 
 namespace Toby\Domain\Validation\Rules;
 
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Toby\Domain\Enums\VacationRequestState;
+use Toby\Domain\Enums\VacationType;
+use Toby\Domain\VacationDaysCalculator;
 use Toby\Domain\VacationTypeConfigRetriever;
+use Toby\Eloquent\Models\User;
 use Toby\Eloquent\Models\VacationRequest;
+use Toby\Eloquent\Models\YearPeriod;
 
 class DoesNotExceedLimitRule implements VacationRequestRule
 {
     public function __construct(
         protected VacationTypeConfigRetriever $configRetriever,
+        protected VacationDaysCalculator $vacationDaysCalculator,
     ) {
     }
 
     public function check(VacationRequest $vacationRequest): bool
     {
-        return true;
+        if (!$this->configRetriever->hasLimit($vacationRequest->type)) {
+            return true;
+        }
+
+        $limit = $this->getUserVacationLimit($vacationRequest->user, $vacationRequest->yearPeriod);
+        $vacationDays = $this->getVacationDaysWithLimit($vacationRequest->user, $vacationRequest->yearPeriod);
+        $estimatedDays = $this->vacationDaysCalculator->calculateDays($vacationRequest->yearPeriod, $vacationRequest->from, $vacationRequest->to)->count();
+
+        return $limit >= ($vacationDays + $estimatedDays);
     }
 
     public function errorMessage(): string
     {
         return __("You have exceeded your vacation limit.");
     }
+
+    protected function getUserVacationLimit(User $user, YearPeriod $yearPeriod): int
+    {
+        return $user->vacationLimits()->where("year_period_id", $yearPeriod->id)->first()->days ?? 0;
+    }
+
+    protected function getVacationDaysWithLimit(User $user, YearPeriod $yearPeriod): int
+    {
+        return $user->vacations()
+            ->where("year_period_id", $yearPeriod->id)
+            ->whereRelation(
+                "vacationRequest",
+                fn(Builder $query) => $query
+            ->whereIn("type", $this->getLimitableVacationTypes())
+            ->noStates(VacationRequestState::failedStates()),
+            )
+            ->count();
+    }
+
+    protected function getLimitableVacationTypes(): Collection
+    {
+        $types = new Collection(VacationType::cases());
+
+        return $types->filter(fn(VacationType $type) => $this->configRetriever->hasLimit($type));
+    }
 }