finance/app/Http/Controllers/CurrencyController.php

<?php

namespace App\Http\Controllers;

use App\Jobs\FetchCurrencyRates;
use App\Jobs\FetchGoldRates;
use App\Jobs\FetchCryptoCurrencyRates;
use App\Jobs\MergeCurrencyAndGoldRates;
use Illuminate\Support\Facades\Storage;
use App\Http\Controllers\Controller;


/**
 * Class CurrencyController
 * 
 * This controller handles the fetching and returning of currency and gold rates.
 */
class CurrencyController extends Controller
{


    /**
     * ⚙️  Dispatches all jobs to fetch currency and gold rates synchronously.
     * Rate limited to 2 requests per 30 seconds.
     * 
     * @return \Illuminate\Http\JsonResponse
     */
    public function runAllFetchs()
    {
        try {
            
            FetchCurrencyRates::dispatchSync();
            FetchGoldRates::dispatchSync();
            FetchCryptoCurrencyRates::dispatchSync();
            MergeCurrencyAndGoldRates::dispatchSync();

            return response()->json([
                'status' => 'success',
                'message' => 'All currency and gold rates have been successfully updated'
            ]);
        } catch (\Exception $e) {
            return response()->json([
                'status' => 'error',
                'message' => 'Kurlar güncellenirken bir hata oluştu: ' . $e->getMessage()
            ], 429);
        }
    }

    /**
     * 🪙 💵 ₿ Retrieves all gold and currency rates 
     *
     * @return \Illuminate\Http\JsonResponse
     */
    public function getAllRates()
    {
        $jsonFile = 'merged/rates.json';
        
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            $currentDate = now();
            $updateDate = isset($data['Update_Date']) ? \Carbon\Carbon::parse($data['Update_Date']) : null;

            if ($updateDate) {
                $minutesAgo = round($currentDate->diffInMinutes($updateDate), 2);
                $metaData = [
                    'Minutes_Ago' => $minutesAgo,
                    'Current_Date' => $currentDate->toDateTimeString(),
                    'Update_Date' => $updateDate->toDateTimeString(),
                ];
                unset($data['Update_Date']);
                $data = [
                    'Meta_Data' => $metaData,
                    'Rates' => $data
                ];
                
                return response()->json($data);
            }
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * 💵 Retrieves the current currency rates 
     *
     * @return \Illuminate\Http\JsonResponse
     */
    public function getCurrentRates()
    {
        // JSON dosyasından oku
        $jsonFile = 'currency/today.json';  
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            $currentDate = now(); // Şu anki tarih
            $updateDate = isset($data['Update_Date']) ? \Carbon\Carbon::parse($data['Update_Date']) : null;

            if ($updateDate) {
                $minutesAgo = round($currentDate->diffInMinutes($updateDate), 2); // Kaç dakika önce alındığı
                $metaData = [ // Tarih bilgileri için alt dizi
                    'Minutes_Ago' => $minutesAgo,
                    'Current_Date' => $currentDate->toDateTimeString(),
                    'Update_Date' => $updateDate->toDateTimeString(), // Update_Date burada kalacak
                ];
                unset($data['Update_Date']); // Rates içerisindeki Update_Date elemanını kaldır
                $data = [
                    'Meta_Data' => $metaData, // Tarih bilgileri alt dizisi
                    'Rates' => $data, // Kur bilgileri alt dizisi
                ];
            }

            return response()->json($data);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * 🪙 Retrieves the current gold rates 
     *
     * @return \Illuminate\Http\JsonResponse
     */
    public function getGoldRates()
    {
        // JSON dosyasından oku
        $jsonFile = 'gold/today.json';  
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            $currentDate = now(); // Şu anki tarih
            $updateDate = isset($data['Update_Date']) ? \Carbon\Carbon::parse($data['Update_Date']) : null;

            if ($updateDate) {
                $minutesAgo = round($currentDate->diffInMinutes($updateDate), 2); // Kaç dakika önce alındığı
                $metaData = [ // Tarih bilgileri için alt dizi
                    'Minutes_Ago' => $minutesAgo,
                    'Current_Date' => $currentDate->toDateTimeString(),
                    'Update_Date' => $updateDate->toDateTimeString(), // Update_Date burada kalacak
                ];
                unset($data['Update_Date']); // Rates içerisindeki Update_Date elemanını kaldır
                $data = [
                    'Meta_Data' => $metaData, // Tarih bilgileri alt dizisi
                    'Rates' => $data, // Kur bilgileri alt dizisi
                ];
            }

            return response()->json($data);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * ₿ Retrieves the current crypto currency rates 
     *
     * @return \Illuminate\Http\JsonResponse
     */
    public function getCryptoCurrencyRates()
    {
        $jsonFile = 'crypto/today.json';  
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            $currentDate = now();
            $updateDate = isset($data['Update_Date']) ? \Carbon\Carbon::parse($data['Update_Date']) : null;

            if ($updateDate) {
                $minutesAgo = round($currentDate->diffInMinutes($updateDate), 2);
                $metaData = [
                    'Minutes_Ago' => $minutesAgo,
                    'Current_Date' => $currentDate->toDateTimeString(),
                    'Update_Date' => $updateDate->toDateTimeString(),
                ];
                unset($data['Update_Date']);
                $data = [
                    'Meta_Data' => $metaData,
                    'Rates' => $data,
                ];
            }

            return response()->json($data);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * 🟰 💵 Retrieves the currency rate by its name 
     *
     * @param string $currencyName
     * @return \Illuminate\Http\JsonResponse
     */
    public function getCurrencyRateByName($currencyName)
    {
        // JSON dosyasından oku
        $jsonFile = 'currency/today.json';
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            if (isset($data[$currencyName])) {
                return response()->json([$currencyName => $data[$currencyName]]);
            }
            return response()->json(['error' => 'Currency not found'], 404);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * 🟰 🪙 Retrieves the gold rate by its name 
     *
     * @param string $goldName
     * @return \Illuminate\Http\JsonResponse
     */
    public function getGoldRateByName($goldName)
    {
        // JSON dosyasından oku
        $jsonFile = 'gold/today.json';
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            if (isset($data[$goldName])) {
                return response()->json([$goldName => $data[$goldName]]);
            }
            return response()->json(['error' => 'Currency not found'], 404);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }

    /**
     * 🟰 ₿ Retrieves the crypto currency rate by its name 
     *
     * @param string $cryptoCurrencyName
     * @return \Illuminate\Http\JsonResponse
     */
    public function getCryptoCurrencyRateByName($cryptoCurrencyName)
    {
        $jsonFile = 'crypto/today.json';
        if (Storage::exists($jsonFile)) {
            $data = json_decode(Storage::get($jsonFile), true);
            if (isset($data[$cryptoCurrencyName])) {
                return response()->json([$cryptoCurrencyName => $data[$cryptoCurrencyName]]);
            }
            return response()->json(['error' => 'Cryptocurrency not found'], 404);
        }

        return response()->json(['error' => 'Data not found'], 404);
    }
}