Day1

FailedCode · FailedCode · commit bbd577c597a7 · 2022-12-08T01:33:00.000+01:00
diff --git a/src/Days/AbstractDay.php b/src/Days/AbstractDay.php
@@ -2,8 +2,17 @@
 
 namespace Failedcode\Aoc2022\Days;
 
+use Failedcode\Aoc2022\Utils;
+
 abstract class AbstractDay
 {
+    protected Utils $util;
+
+    public function __construct()
+    {
+        $this->util = new Utils();
+    }
+
     public function solve_part_1(): string
     {
         return "TODO";
diff --git a/src/Days/Day1.php b/src/Days/Day1.php
@@ -5,4 +5,38 @@
 class Day1 extends AbstractDay
 {
 
+    public function solve_part_1(): string
+    {
+        $calories = $this->getCalories();
+        return max($calories);
+    }
+
+    public function solve_part_2(): string
+    {
+        $calories = $this->getCalories();
+        $caloriesMax = 0;
+        for ($i = 0; $i < 3; $i += 1) {
+            $maxVal = max($calories);
+            $position = array_search($maxVal, $calories);
+            unset($calories[$position]);
+            $caloriesMax += (int)$maxVal;
+        }
+        return $caloriesMax;
+    }
+
+    public function getCalories(): array
+    {
+        $list = $this->util->loadInput(1);
+        $calories = [];
+        $currentSum = 0;
+        foreach ($list as $row) {
+            if (trim($row) === '') {
+                $calories[] = $currentSum;
+                $currentSum = 0;
+                continue;
+            }
+            $currentSum += (int)$row;
+        }
+        return $calories;
+    }
 }
diff --git a/src/Utils.php b/src/Utils.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Failedcode\Aoc2022;
+
+class Utils
+{
+    public function loadInput($day, $type="day"): array
+    {
+        $filePath = "input/{$type}{$day}.txt";
+        if (!file_exists($filePath)) {
+            // TODO: download input
+            throw new \Exception("Input missing: '$filePath'", 1670457206416);
+        }
+        $content = file_get_contents($filePath);
+        return explode("\n", $content);
+    }
+}
