Initial commit

2022-03-25 16:42:41 +01:00
commit 34685838bc
235 changed files with 12766 additions and 0 deletions
@@ -0,0 +1,97 @@
+<?php
+declare(strict_types=1);
+namespace App\Helper;
+
+use App\Entity\ExchangeRates;
+use Doctrine\ORM\EntityManager;
+
+class Currency
+{
+    public static array $currencies = ["USD","GBP","PLN"];
+    private static string $apiUrl = "https://api.nbp.pl/api/exchangerates/rates/a/:code/:date/?format=json";
+    private EntityManager $manager;
+    private array $ratesPerDate;
+
+    public function __construct(EntityManager $manager)
+    {
+        $this->manager = $manager;
+        $this->takeRates();
+    }
+
+    public function getRate(string $currency, \DateTime $dateTime, &$err) : float
+    {
+        $dayOfWeek = $dateTime->format("N");
+        $minusDay = 1;
+        if ($dayOfWeek == 7){
+            $minusDay = 2;
+        } elseif ($dayOfWeek == 1) {
+            $minusDay = 3;
+        }
+        $dateTime->modify("-$minusDay days");
+        $dateStr = $dateTime->format("Ymd");
+
+        if (isset($this->ratesPerDate[$currency]) && isset($this->ratesPerDate[$currency][$dateStr])) {
+            return $this->ratesPerDate[$currency][$dateStr];
+        }
+        $dateCopy = clone $dateTime;
+
+        do {
+            $rate = $this->takePLNOnDate($currency, $dateCopy->format("Y-m-d"));
+            if (!$rate) {
+                $dateCopy->modify("-1 day");
+            }
+        }while($rate == 0);
+
+        if ($rate) {
+            $ratesEntity = new ExchangeRates();
+            $ratesEntity->setIntRate(intval($rate * 10000));
+            $ratesEntity->setStrCurrency($currency);
+            $ratesEntity->setDateDate($dateTime);
+
+            $this->manager->persist($ratesEntity);
+            $this->manager->flush();
+            $this->ratesPerDate[$currency][$dateStr] = $rate;
+            return $rate;
+        }
+
+        return 0;
+    }
+
+
+    private function takePLNOnDate(string $currency, string $dateStr) : float
+    {
+        if (!in_array($currency, self::$currencies)) {
+            return 0;
+        }
+        $url = strtr(self::$apiUrl,[
+            ":code" => mb_strtolower($currency),
+            ":date" => str_replace(".","-",$dateStr)
+        ]);
+        $ch = curl_init();
+        curl_setopt($ch, CURLOPT_URL, $url);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        $result=curl_exec($ch);
+        curl_close($ch);
+        $data = json_decode($result, true);
+        if (!isset($data['rates']) || !isset($data['rates'][0]) || !isset($data['rates'][0]['mid'])) {
+            return 0;
+        }
+        return $data['rates'][0]['mid'];
+    }
+
+    private function takeRates()
+    {
+        $rates = $this->manager->getRepository(ExchangeRates::class);
+        $rates = $rates->findAll();
+
+        if ($rates) {
+            /** @var ExchangeRates $rate */
+            foreach ($rates as $rate) {
+                if (!isset($this->ratesPerDate[$rate->getStrCurrency()])) {
+                    $this->ratesPerDate[$rate->getStrCurrency()] = [];
+                }
+                $this->ratesPerDate[$rate->getStrCurrency()][$rate->getDateDate()->format("Ymd")] = $rate->getIntRate()/10000;
+            }
+        }
+    }
+}