firefly-iii/app/Http/Controllers/HomeController.php

<?php namespace FireflyIII\Http\Controllers;

use Carbon\Carbon;
use Config;
use FireflyIII\Repositories\Account\AccountRepositoryInterface;
use Input;
use Preferences;
use Redirect;
use Session;
use Steam;

/**
 * Class HomeController
 *
 * @package FireflyIII\Http\Controllers
 */
class HomeController extends Controller
{

    public function dateRange()
    {
        $start = new Carbon(Input::get('start'));
        $end   = new Carbon(Input::get('end'));

        $diff = $start->diffInDays($end);

        if ($diff > 50) {
            Session::flash('warning', $diff . ' days of data may take a while to load.');
        }

        Session::put('start', $start);
        Session::put('end', $end);
    }

    /**
     * @return \Illuminate\Http\RedirectResponse
     */
    public function flush()
    {
        Session::clear();

        return Redirect::route('index');
    }

    /**
     * @param AccountRepositoryInterface $repository
     *
     * @return \Illuminate\View\View
     */
    public function index(AccountRepositoryInterface $repository)
    {

        $types             = Config::get('firefly.accountTypesByIdentifier.asset');
        $count             = $repository->countAccounts($types);
        $title             = 'Firefly';
        $subTitle          = trans('firefly.welcomeBack');
        $mainTitleIcon     = 'fa-fire';
        $transactions      = [];
        $frontPage         = Preferences::get('frontPageAccounts', []);
        $start             = Session::get('start', Carbon::now()->startOfMonth());
        $end               = Session::get('end', Carbon::now()->endOfMonth());
        $accounts          = $repository->getFrontpageAccounts($frontPage);
        $savings           = $repository->getSavingsAccounts();
        $piggyBankAccounts = $repository->getPiggyBankAccounts();


        $savingsTotal = 0;
        foreach ($savings as $savingAccount) {
            $savingsTotal += Steam::balance($savingAccount, $end);
        }

        // check if all books are correct.
        $sum = $repository->sumOfEverything();
        if ($sum != 0) {
            Session::flash(
                'error', 'Your transactions are unbalanced. This means a'
                         . ' withdrawal, deposit or transfer was not stored properly. '
                         . 'Please check your accounts and transactions for errors.'
            );
        }

        foreach ($accounts as $account) {
            $set = $repository->getFrontpageTransactions($account, $start, $end);
            if (count($set) > 0) {
                $transactions[] = [$set, $account];
            }
        }

        return view('index', compact('count', 'title', 'savings', 'subTitle', 'mainTitleIcon', 'transactions', 'savingsTotal', 'piggyBankAccounts'));
    }


}