<?php

use Illuminate\Support\Facades\Route;
use Illuminate\Support\Collection;
use App\Models\Currency;
use App\Models\Rates;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {

 /*
   select value, currency_id, relative_id, MAX(updated_at)
   from rates
   group by (currency_id);
  */
 $ratesRaw = DB::table('rates')
   ->selectRaw("id, value, currency_id, relative_id, max(`created_at`) as created_at")
   ->groupByRaw('currency_id')
   ->get();

 $rates  = new Collection();
 foreach($ratesRaw as $r) {
   $rates->push(Rates::find($r->id));
 }
 return view('welcome',  ['currencies' => Currency::all(), 'rates' => $rates]);
});