From 209528da1528d0b22d525ce9180fd5c10306d93e Mon Sep 17 00:00:00 2001
From: imlonghao <git@imlonghao.com>
Date: Mon, 27 Jun 2022 21:56:29 +0800
Subject: [PATCH] feat(pricing): add currency api

---
 app/Models/Pricing.php                        | 78 ++++++++++---------
 .../components/currency-select.blade.php      | 12 ++-
 resources/views/home.blade.php                | 23 ++++--
 3 files changed, 63 insertions(+), 50 deletions(-)

diff --git a/app/Models/Pricing.php b/app/Models/Pricing.php
index 0a99d9c..b5af33d 100644
--- a/app/Models/Pricing.php
+++ b/app/Models/Pricing.php
@@ -2,11 +2,12 @@
 
 namespace App\Models;
 
+use Exception;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\DB;
-use Illuminate\Support\Facades\Session;
+use Illuminate\Support\Facades\Log;
 
 class Pricing extends Model
 {
@@ -14,46 +15,49 @@ class Pricing extends Model
 
     protected $fillable = ['service_id', 'service_type', 'currency', 'price', 'term', 'as_usd', 'usd_per_month', 'next_due_date'];
 
-    public static function convertFromUSD(string $amount, string $convert_to): float
-    {//Code rates update from an API??
-        if ($convert_to === 'AUD') {
-            return (1.39 * $amount);
-        } elseif ($convert_to === "USD") {
-            return $amount;
-        } elseif ($convert_to === "GBP") {
-            return (0.79 * $amount);
-        } elseif ($convert_to === "EUR") {
-            return (0.93 * $amount);
-        } elseif ($convert_to === "NZD") {
-            return (1.53 * $amount);
-        } elseif ($convert_to === "JPY") {
-            return (127.12 * $amount);
-        } elseif ($convert_to === "CAD") {
-            return (1.27 * $amount);
-        } else {
-            return $amount;
+    private static function refreshRates(): object
+    {
+        if (Cache::has("currency_rates")) {
+            return Cache::get("currency_rates");
         }
+        $response_json = file_get_contents("https://open.er-api.com/v6/latest/USD");
+        if (false === $response_json) {
+            Log::error("do file_get_contents failed");
+            return (object)null;
+        }
+        try {
+            $response = json_decode($response_json);
+            if ('success' === $response->result) {
+                return Cache::remember("currency_rates", now()->addWeek(1), function () use ($response) {
+                    return $response->rates;
+                });
+            }
+            Log::error("server response is " . $response->result . ", expecting success");
+        } catch (Exception $e) {
+            Log::error("failed to request v6.exchangerate-api.com", ['err' => $e]);
+        }
+        return (object)null;
+    }
+
+    private static function getRates($currency): float
+    {
+        $rate = self::refreshRates()->$currency;
+        return $rate === null ? 1.00 : $rate;
+    }
+
+    public static function getCurrencyList(): array
+    {
+        return array_keys((array)self::refreshRates());
+    }
+
+    public static function convertFromUSD(string $amount, string $convert_to): float
+    {
+        return $amount * self::getRates($convert_to);
     }
 
     public function convertToUSD(string $amount, string $convert_from): float
     {
-        if ($convert_from === 'AUD') {
-            return (0.76 * $amount);
-        } elseif ($convert_from === "USD") {
-            return $amount;
-        } elseif ($convert_from === "GBP") {
-            return (1.35 * $amount);
-        } elseif ($convert_from === "EUR") {
-            return (1.23 * $amount);
-        } elseif ($convert_from === "NZD") {
-            return (0.72 * $amount);
-        } elseif ($convert_from === "JPY") {
-            return (0.0097 * $amount);
-        } elseif ($convert_from === "CAD") {
-            return (0.78 * $amount);
-        } else {
-            return 1.00;
-        }
+        return $amount / self::getRates($convert_from);
     }
 
     public function costAsPerMonth(string $cost, int $term): float
@@ -140,7 +144,7 @@ class Pricing extends Model
     public static function pricingForService(string $service_id)
     {
         return Cache::remember("service_pricing.$service_id", now()->addWeek(1), function () use ($service_id) {
-            return  DB::table('servers as s')
+            return DB::table('servers as s')
                 ->join('pricings as p', 's.id', '=', 'p.service_id')
                 ->where('s.id', '=', $service_id)
                 ->get(['s.*', 'p.*']);
diff --git a/resources/views/components/currency-select.blade.php b/resources/views/components/currency-select.blade.php
index c068bf4..9218187 100644
--- a/resources/views/components/currency-select.blade.php
+++ b/resources/views/components/currency-select.blade.php
@@ -1,12 +1,10 @@
 <div class="input-group">
     <div class="input-group-prepend"><span class="input-group-text">{{ $title ??'Currency'}}</span></div>
     <select class="form-control" name="{{$name ?? 'currency'}}">
-        <option value="AUD" {{(isset($current) && (string)$current === 'AUD')? 'selected' : ''}}>AUD</option>
-        <option value="USD" {{(isset($current) && (string)$current === 'USD')? 'selected' : ''}}>USD</option>
-        <option value="GBP" {{(isset($current) && (string)$current === 'GBP')? 'selected' : ''}}>GBP</option>
-        <option value="EUR" {{(isset($current) && (string)$current === 'EUR')? 'selected' : ''}}>EUR</option>
-        <option value="NZD" {{(isset($current) && (string)$current === 'NZD')? 'selected' : ''}}>NZD</option>
-        <option value="JPY" {{(isset($current) && (string)$current === 'JPY')? 'selected' : ''}}>JPY</option>
-        <option value="CAD" {{(isset($current) && (string)$current === 'CAD')? 'selected' : ''}}>CAD</option>
+        @foreach (App\Models\Pricing::getCurrencyList() as $currency)
+            <option value="{{$currency}}" {{(isset($current) && (string)$current === $currency)? 'selected' : ''}}>
+                {{$currency}}
+            </option>
+        @endforeach
     </select>
 </div>
diff --git a/resources/views/home.blade.php b/resources/views/home.blade.php
index d9515ef..8a0587b 100644
--- a/resources/views/home.blade.php
+++ b/resources/views/home.blade.php
@@ -71,7 +71,10 @@
                         <div class="card">
                             <div class="card-body text-center shadow">
                                 <div class="row">
-                                    <h4>{{$information['total_cost_weekly']}} <small class="text-muted">{{$information['currency']}}</small></h4>
+                                    <h4>
+                                        {{$information['total_cost_weekly']}}
+                                        <small class="text-muted">{{$information['currency']}}</small>
+                                    </h4>
                                     <p>Weekly cost</p>
                                 </div>
                             </div>
@@ -81,7 +84,9 @@
                         <div class="card">
                             <div class="card-body text-center shadow">
                                 <div class="row">
-                                    <h4>{{$information['total_cost_monthly']}} <small class="text-muted">{{$information['currency']}}</small>
+                                    <h4>
+                                        {{$information['total_cost_monthly']}}
+                                        <small class="text-muted">{{$information['currency']}}</small>
                                     </h4>
                                     <p>Monthly cost</p>
                                 </div>
@@ -92,7 +97,10 @@
                         <div class="card">
                             <div class="card-body text-center shadow">
                                 <div class="row">
-                                    <h4>{{$information['total_cost_yearly']}} <small class="text-muted">{{$information['currency']}}</small></h4>
+                                    <h4>
+                                        {{$information['total_cost_yearly']}}
+                                        <small class="text-muted">{{$information['currency']}}</small>
+                                    </h4>
                                     <p>Yearly cost</p>
                                 </div>
                             </div>
@@ -102,7 +110,9 @@
                         <div class="card">
                             <div class="card-body text-center shadow">
                                 <div class="row">
-                                    <h4>{{$information['total_cost_2_yearly']}} <small class="text-muted">{{$information['currency']}}</small>
+                                    <h4>
+                                        {{$information['total_cost_2_yearly']}}
+                                        <small class="text-muted">{{$information['currency']}}</small>
                                     </h4>
                                     <p>2 yearly cost</p>
                                 </div>
@@ -388,8 +398,9 @@
 
                 @if(Session::has('timer_version_footer') && Session::get('timer_version_footer') === 1)
                     <p class="text-muted mt-4 text-end"><small>Page took {{$information['execution_time']}} seconds,
-                            Built on Laravel v{{ Illuminate\Foundation\Application::VERSION }} (PHP v{{ PHP_VERSION }}
-                            )</small>
+                            Built on Laravel v{{ Illuminate\Foundation\Application::VERSION }} (PHP v{{ PHP_VERSION }}),
+                            Rates By <a href="https://www.exchangerate-api.com">Exchange Rate API</a>
+                        </small>
                     </p>
                 @endif
     </div>