✨ Finit le 4eme jour

day_4/part_1.php

@@ -0,0 +1,13 @@
+<?php
+
+include 'passport.php';
+
+$passports = explode("\n\n", file_get_contents('input.txt'));
+$number_of_valid_passports = 0;
+
+foreach ($passports as $passport) {
+    $passport_o = Passport::fromInput($passport);
+    $number_of_valid_passports += ($passport_o->isValid()) ? 1 : 0;
+}
+
+var_dump($number_of_valid_passports);

day_4/part_2.php

@@ -0,0 +1,13 @@
+<?php
+
+include 'passport.php';
+
+$passports = explode("\n\n", file_get_contents('input.txt'));
+$number_of_valid_passports = 0;
+
+foreach ($passports as $passport) {
+    $passport_o = Passport::fromInput($passport);
+    $number_of_valid_passports += ($passport_o->isReallyValid()) ? 1 : 0;
+}
+
+var_dump($number_of_valid_passports);

day_4/passport.php

@@ -0,0 +1,108 @@
+<?php
+
+class Passport
+{
+    public $byr; // (Birth Year)
+    public $iyr; // (Issue Year)
+    public $eyr; // (Expiration Year)
+    public $hgt; // (Height)
+    public $hcl; // (Hair Color)
+    public $ecl; // (Eye Color)
+    public $pid; // (Passport ID)
+    public $cid; // (Country ID)
+
+    public static function fromInput($input)
+    {
+        $fields = preg_split('/\s+/', $input);
+
+        $new_passport = new self();
+        foreach ($fields as $field_data) {
+            [$field, $data] = explode(':', $field_data);
+            $new_passport->{$field} = $data;
+        }
+
+        return $new_passport;
+    }
+
+    public function validateByr()
+    {
+        return !empty($this->byr) &&
+            is_numeric($this->byr) &&
+            $this->byr >= 1920 && $this->byr <= 2002;
+    }
+
+    public function validateIyr()
+    {
+        return !empty($this->iyr) &&
+            is_numeric($this->iyr) &&
+            $this->iyr >= 2010 && $this->iyr <= 2020;
+    }
+
+    public function validateEyr()
+    {
+        return !empty($this->eyr) &&
+            is_numeric($this->eyr) &&
+            $this->eyr >= 2020 && $this->eyr <= 2030;
+    }
+
+    public function validateHgt()
+    {
+        $value = substr($this->hgt, 0, -2);
+        $unit = substr($this->hgt, -2);
+        return !empty($this->hgt) &&
+            in_array($unit, ['in','cm']) &&
+            ($unit === 'cm' ? $value >= 150 && $value <= 193 : $value >= 59 && $value <= 76)
+            ;
+    }
+
+    public function validateHcl()
+    {
+        return 1 === preg_match('/^#[0-9a-f]{6}$/', $this->hcl);
+    }
+
+    public function validateEcl()
+    {
+        return in_array($this->ecl, ['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth'], true);
+    }
+
+    public function validatePid()
+    {
+        return 1 === preg_match('/^\d{9}$/', $this->pid);
+    }
+
+    public function validateCid()
+    {
+        return true;
+    }
+
+    public function isReallyValid()
+    {
+        if (!$this->isValid()) {
+//            echo sprintf("invalide basiquement\n");
+            return false;
+        }
+
+        $vars = get_object_vars($this);
+
+        foreach ($vars as $var_name => $var_value) {
+            $method = sprintf('validate%s', ucfirst($var_name));
+            if (!$this->{$method}()) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public function isValid()
+    {
+        return
+            !empty($this->byr) &&
+            !empty($this->iyr) &&
+            !empty($this->eyr) &&
+            !empty($this->hgt) &&
+            !empty($this->hcl) &&
+            !empty($this->ecl) &&
+            !empty($this->pid);
+    }
+}