Currencies project files added

11.04/currencies/.gitignore

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+.idea/
+vendor/
+.env

11.04/currencies/app/Controllers/HomeController.php

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+<?php
+
+namespace App\Controllers;
+
+use App\Services\CurrencyService;
+
+class HomeController
+{
+    public function index()
+    {
+        $service = new CurrencyService();
+        $currencies = $service->getAll();
+
+        return require_once __DIR__  . '/../Views/HomeIndexView.php';
+    }
+
+    public function update()
+    {
+        $service = new CurrencyService();
+        $service->updateAll();
+
+        return header('Location: /');
+    }
+}

11.04/currencies/app/Models/Collection.php

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+<?php
+
+namespace App\Models;
+
+abstract class Collection
+{
+    protected $model;
+    protected array $models = [];
+
+    public function __construct(array $models)
+    {
+        foreach ($models as $model) {
+            $this->add($this->model::create($model));
+        }
+    }
+
+    public function all(): array
+    {
+        return $this->models;
+    }
+
+    public function add(ModelInterface $model): void
+    {
+        $this->models[] = $model;
+    }
+
+    public function pluck(string $parameter): array
+    {
+        $parameters = [];
+
+        foreach ($this->all() as $model) {
+            $parameters[] = $model->$parameter();
+        }
+
+        return $parameters;
+    }
+
+}

11.04/currencies/app/Models/Currency.php

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+<?php
+
+namespace App\Models;
+
+class Currency implements ModelInterface
+{
+    private string $currency;
+    private float $rate;
+
+    public function __construct(string $currency, float $rate)
+    {
+        $this->currency = $currency;
+        $this->rate = $rate;
+    }
+
+    public function currency(): string
+    {
+        return $this->currency;
+    }
+
+    public function rate(): float
+    {
+        return $this->rate;
+    }
+
+    public static function create(array $data): Currency
+    {
+        return new self(
+            $data['currency'],
+            (float) $data['rate']
+        );
+    }
+}

11.04/currencies/app/Models/CurrencyCollection.php

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+<?php
+
+namespace App\Models;
+
+class CurrencyCollection extends Collection
+{
+    protected $model = Currency::class;
+}

11.04/currencies/app/Models/ModelInterface.php

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+<?php
+
+namespace App\Models;
+
+interface ModelInterface
+{
+    public static function create(array $data): ModelInterface;
+}

11.04/currencies/app/Repositories/CurrencyRepository.php

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+<?php
+
+namespace App\Repositories;
+
+use App\Models\Currency;
+use App\Models\CurrencyCollection;
+use Sabre\Xml\Service;
+
+class CurrencyRepository
+{
+    public function getCurrencies(): CurrencyCollection
+    {
+        if ($this->isEmpty()) $this->createDB($this->getCurrenciesFromBank());
+
+        $query = query()
+            ->select('*')
+            ->from('currencies')
+            ->execute()
+            ->fetchAllAssociative();
+
+        return new CurrencyCollection($query);
+    }
+
+    public function updateCurrencies(): void
+    {
+        $currencies = $this->getCurrenciesFromBank();
+
+        /** @var Currency $currency */
+        foreach ($currencies->all() as $currency) {
+            query()
+                ->update('currencies')
+                ->set('rate', $currency->getRate())
+                ->where('currency = :currency')
+                ->setParameter('currency', $currency->getCurrency())
+                ->execute();
+        }
+    }
+
+    private function getCurrenciesFromBank(): CurrencyCollection
+    {
+        $xml = file_get_contents('https://www.bank.lv/vk/ecb.xml');
+
+        $service = new Service();
+        $result = $service->parse($xml);
+
+        $currenciesRaw = $result[1]['value'];
+
+        $data = [];
+
+        foreach ($currenciesRaw as $currencyRaw) {
+            $data[] = [
+                'currency' => $currencyRaw['value'][0]['value'],
+                'rate' => (float) $currencyRaw['value'][1]['value']
+            ];
+        }
+
+        return new CurrencyCollection($data);
+    }
+
+    private function isEmpty(): bool
+    {
+        $query = query()
+            ->select('*')
+            ->from('currencies')
+            ->execute()
+            ->fetchAllAssociative();
+
+        return count($query) === 0;
+    }
+
+    private function createDB(CurrencyCollection $currencies): void
+    {
+        /** @var Currency $currency */
+        foreach ($currencies->all() as $currency) {
+            query()
+                ->insert('currencies')
+                ->values([
+                    'currency' => ':currency',
+                    'rate' => ':rate'
+                ])
+                ->setParameters([
+                    'currency' => $currency->getCurrency(),
+                    'rate' => $currency->getRate(),
+                ])
+                ->execute();
+        }
+    }
+}

11.04/currencies/app/Services/CurrencyService.php

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+<?php
+
+namespace App\Services;
+
+use App\Models\CurrencyCollection;
+use App\Repositories\CurrencyRepository;
+
+class CurrencyService
+{
+    public function getAll(): CurrencyCollection
+    {
+        $repository = new CurrencyRepository();
+
+        return $repository->getCurrencies();
+    }
+
+    public function updateAll(): void
+    {
+        $repository = new CurrencyRepository();
+
+        $repository->updateCurrencies();
+    }
+}

11.04/currencies/app/Views/FooterView.php

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+
+</body>
+</html>

11.04/currencies/app/Views/HeaderView.php

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+<html>
+    <head>
+
+    </head>
+    <body>

11.04/currencies/app/Views/HomeIndexView.php

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+<?php require_once __DIR__  . '/../Views/HeaderView.php' ?>
+
+<h1>Currencies</h1>
+
+<form action="/currencies" method="POST">
+    <button type="submit">UPDATE CURRENCIES!</button>
+</form>
+
+<?php foreach ($currencies->all() as $currency): ?>
+    <h3>
+        <?php echo $currency->getCurrency() . ': ' . $currency->getRate(); ?>
+    </h3>
+<?php endforeach; ?>
+
+<?php require_once __DIR__  . '/../Views/FooterView.php' ?>

11.04/currencies/composer.json

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+{
+    "name": "kem4/codelex",
+    "autoload": {
+        "psr-4": {
+            "App\\": "app/"
+        }
+    },
+    "require": {
+        "nikic/fast-route": "^1.3",
+        "doctrine/dbal": "^2.12",
+        "vlucas/phpdotenv": "^5.2",
+        "respect/validation": "^2.1",
+        "imangazaliev/didom": "^1.16",
+        "sabre/xml": "^2.2",
+        "nesbot/carbon": "^2.41"
+    },
+    "minimum-stability": "stable"
+}