Fix bugs in calculator

app/Calculator/MaturityAnswerLevelCalculator.php

@@ -7,13 +7,15 @@
 
 class MaturityAnswerLevelCalculator
 {
-    public function calculateFundamentalLevel(Evaluation $evaluation): float|int|null
+    public function calculateFundamentalLevel(Evaluation $evaluation): int
     {
-        return $evaluation->measureLevels->filter(function (MeasureLevel $ml) {
+        $level = $evaluation->measureLevels->filter(function (MeasureLevel $ml) {
             return true === $ml->measure->fundamental;
         })->average(function (MeasureLevel $ml) {
             return $ml->actual_level;
         });
+
+        return (int)floor($level);
     }
 
     public function calculateExecutionLevel(Evaluation $evaluation): int
@@ -23,7 +25,7 @@ public function calculateExecutionLevel(Evaluation $evaluation): int
          * @var Evaluation|null $previousEvaluation
          */
         $previousEvaluation = Evaluation::where('status', Evaluation::STATUS_DONE)
-            ->where('updated_at', '<', $evaluation->updatedAt)
+            ->whereDate('updated_at', '<', $evaluation->updated_at->toDateString())
             ->orderBy('updated_at', 'DESC')
             ->first();
         if ($previousEvaluation) {
@@ -42,7 +44,11 @@ public function calculateExecutionLevel(Evaluation $evaluation): int
             });
 
             // Calculate score
-            $score = $expectedLevelMeasures->count() / $attainedLevelMeasures->count();
+            $atc = $attainedLevelMeasures->count();
+            if ($atc === 0) {
+                return 0;
+            }
+            $score = $expectedLevelMeasures->count() / $atc;
 
             // Return level from score
             if ($score > 80) {