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Modules/Currency/Entities/CurrencyRate.php

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+<?php
+
+namespace Modules\Currency\Entities;
+
+use Money\Currency;
+use Modules\Support\Eloquent\Model;
+use Illuminate\Support\Facades\Cache;
+use Modules\Currency\Admin\CurrencyRateTable;
+use Modules\Currency\Services\CurrencyRateExchanger;
+
+class CurrencyRate extends Model
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['currency', 'rate'];
+
+    /**
+     * Perform any actions required after the model boots.
+     *
+     * @return void
+     */
+    public static function booted()
+    {
+        static::saved(function ($currencyRate) {
+            Cache::forget(md5("currency_rate.{$currencyRate->currency}"));
+        });
+    }
+
+    /**
+     * Refresh all supported currencies exchange rate.
+     *
+     * @param \Modules\Currency\Services\CurrencyRateExchanger $exchanger
+     * @return void
+     */
+    public static function refreshRates(CurrencyRateExchanger $exchanger)
+    {
+        $fromCurrency = setting('default_currency');
+
+        foreach (setting('supported_currencies') as $toCurrency) {
+            $rate = $exchanger->exchange($fromCurrency, $toCurrency);
+
+            static::where('currency', $toCurrency)->first()->update(['rate' => $rate]);
+        }
+    }
+
+    /**
+     * Get currency rate for the given currency.
+     *
+     * @param string $currency
+     * @return int|float
+     */
+    public static function for($currency)
+    {
+        return Cache::rememberForever(md5("currency_rate.{$currency}"), function () use ($currency) {
+            return static::where('currency', $currency)->value('rate');
+        });
+    }
+
+    /**
+     * Get table data for the resource
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function table()
+    {
+        return new CurrencyRateTable($this->newQuery());
+    }
+}