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path: root/app/Console/Commands/updateRates.php
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<?php

namespace App\Console\Commands;

use App\Models\Rates;
use App\Models\Currency;

use Illuminate\Console\Command;
use \GuzzleHttp\Client;

class updateRates extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'rates:update';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Pull updated rates from our API';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle()
    {
        $client = new \GuzzleHttp\Client();
        $res = $client->get('https://api.coingecko.com/api/v3/exchange_rates', []);

        if($res->getStatusCode() != 200) {
          echo "failed to make query to coingecko.";
        } 

        else {

          $parsed = json_decode($res->getBody(),true);

          if(array_key_exists('rates', $parsed)) {

            foreach($parsed['rates'] as $rate) {

              // grab our BTC object, since all results are relative to it.
              $btc = Currency::Where('id', 1)->first();

              // setup a Currency object if we don't have one already.
              if(!$currency = Currency::where('name', '=', $rate['name'])->first()) {
                $currency = new Currency(['name'=> $rate['name'], 'unit' => $rate['unit']]);
                $currency->save();
              }

              // build rate.
              $rateObj = new Rates;
              $rateObj->value = $rate['value'];
              $rateObj->currency_id = $currency->id;
              $rateObj->relative_id = $btc->id;
              $rateObj->save();
            }
          }

        }
    }
}