<?php
/**
 * CurrencyController.php
 * Copyright (c) 2017 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace FireflyIII\Http\Controllers;

use Cache;
use FireflyIII\Http\Requests\CurrencyFormRequest;
use FireflyIII\Models\TransactionCurrency;
use FireflyIII\Repositories\Currency\CurrencyRepositoryInterface;
use FireflyIII\Repositories\User\UserRepositoryInterface;
use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator;
use Log;
use Preferences;
use View;

/**
 * Class CurrencyController.
 */
class CurrencyController extends Controller
{
    /** @var CurrencyRepositoryInterface */
    protected $repository;

    /** @var UserRepositoryInterface */
    protected $userRepository;

    /**
     *
     */
    public function __construct()
    {
        parent::__construct();

        $this->middleware(
            function ($request, $next) {
                app('view')->share('title', trans('firefly.currencies'));
                app('view')->share('mainTitleIcon', 'fa-usd');
                $this->repository     = app(CurrencyRepositoryInterface::class);
                $this->userRepository = app(UserRepositoryInterface::class);

                return $next($request);
            }
        );
    }

    /**
     * @param Request $request
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector|View
     */
    public function create(Request $request)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            $request->session()->flash('error', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));

            return redirect(route('currencies.index'));
        }

        $subTitleIcon = 'fa-plus';
        $subTitle     = trans('firefly.create_currency');

        // put previous url in session if not redirect from store (not "create another").
        if (true !== session('currencies.create.fromStore')) {
            $this->rememberPreviousUri('currencies.create.uri');
        }
        $request->session()->forget('currencies.create.fromStore');

        return view('currencies.create', compact('subTitleIcon', 'subTitle'));
    }

    /**
     * @param Request             $request
     * @param TransactionCurrency $currency
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function defaultCurrency(Request $request, TransactionCurrency $currency)
    {
        Preferences::set('currencyPreference', $currency->code);
        Preferences::mark();

        $request->session()->flash('success', trans('firefly.new_default_currency', ['name' => $currency->name]));
        Cache::forget('FFCURRENCYSYMBOL');
        Cache::forget('FFCURRENCYCODE');

        return redirect(route('currencies.index'));
    }

    /**
     * @param Request             $request
     * @param TransactionCurrency $currency
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector|View
     */
    public function delete(Request $request, TransactionCurrency $currency)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            // @codeCoverageIgnoreStart
            $request->session()->flash('error', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));

            return redirect(route('currencies.index'));
            // @codeCoverageIgnoreEnd
        }

        if (!$this->repository->canDeleteCurrency($currency)) {
            $request->session()->flash('error', trans('firefly.cannot_delete_currency', ['name' => $currency->name]));

            return redirect(route('currencies.index'));
        }

        // put previous url in session
        $this->rememberPreviousUri('currencies.delete.uri');
        $subTitle = trans('form.delete_currency', ['name' => $currency->name]);

        return view('currencies.delete', compact('currency', 'subTitle'));
    }

    /**
     * @param Request             $request
     * @param TransactionCurrency $currency
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function destroy(Request $request, TransactionCurrency $currency)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            // @codeCoverageIgnoreStart
            $request->session()->flash('error', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));

            return redirect(route('currencies.index'));
            // @codeCoverageIgnoreEnd
        }

        if (!$this->repository->canDeleteCurrency($currency)) {
            $request->session()->flash('error', trans('firefly.cannot_delete_currency', ['name' => $currency->name]));

            return redirect(route('currencies.index'));
        }

        $this->repository->destroy($currency);
        $request->session()->flash('success', trans('firefly.deleted_currency', ['name' => $currency->name]));

        return redirect($this->getPreviousUri('currencies.delete.uri'));
    }

    /**
     * @param Request             $request
     * @param TransactionCurrency $currency
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector|View
     */
    public function edit(Request $request, TransactionCurrency $currency)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            // @codeCoverageIgnoreStart
            $request->session()->flash('error', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));

            return redirect(route('currencies.index'));
            // @codeCoverageIgnoreEnd
        }

        $subTitleIcon     = 'fa-pencil';
        $subTitle         = trans('breadcrumbs.edit_currency', ['name' => $currency->name]);
        $currency->symbol = htmlentities($currency->symbol);

        // put previous url in session if not redirect from store (not "return_to_edit").
        if (true !== session('currencies.edit.fromUpdate')) {
            $this->rememberPreviousUri('currencies.edit.uri');
        }
        $request->session()->forget('currencies.edit.fromUpdate');

        return view('currencies.edit', compact('currency', 'subTitle', 'subTitleIcon'));
    }

    /**
     * @param Request $request
     *
     * @return View
     */
    public function index(Request $request)
    {
        $page       = 0 === intval($request->get('page')) ? 1 : intval($request->get('page'));
        $pageSize   = intval(Preferences::get('listPageSize', 50)->data);
        $collection = $this->repository->get();
        $total      = $collection->count();
        $collection = $collection->sortBy(
            function (TransactionCurrency $currency) {
                return $currency->name;
            }
        );
        $collection = $collection->slice(($page - 1) * $pageSize, $pageSize);
        $currencies = new LengthAwarePaginator($collection, $total, $pageSize, $page);
        $currencies->setPath(route('currencies.index'));

        $defaultCurrency = $this->repository->getCurrencyByPreference(Preferences::get('currencyPreference', config('firefly.default_currency', 'EUR')));
        $isOwner         = true;
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            $request->session()->flash('info', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));
            $isOwner = false;
        }

        return view('currencies.index', compact('currencies', 'defaultCurrency', 'isOwner'));
    }

    /**
     * @param CurrencyFormRequest $request
     *
     * @return $this|\Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function store(CurrencyFormRequest $request)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            // @codeCoverageIgnoreStart
            Log::error('User ' . auth()->user()->id . ' is not admin, but tried to store a currency.');

            return redirect($this->getPreviousUri('currencies.create.uri'));
            // @codeCoverageIgnoreEnd
        }

        $data     = $request->getCurrencyData();
        $currency = $this->repository->store($data);
        $request->session()->flash('success', trans('firefly.created_currency', ['name' => $currency->name]));

        if (1 === intval($request->get('create_another'))) {
            // @codeCoverageIgnoreStart
            $request->session()->put('currencies.create.fromStore', true);

            return redirect(route('currencies.create'))->withInput();
            // @codeCoverageIgnoreEnd
        }

        return redirect($this->getPreviousUri('currencies.create.uri'));
    }

    /**
     * @param CurrencyFormRequest $request
     * @param TransactionCurrency $currency
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function update(CurrencyFormRequest $request, TransactionCurrency $currency)
    {
        if (!$this->userRepository->hasRole(auth()->user(), 'owner')) {
            // @codeCoverageIgnoreStart
            $request->session()->flash('error', trans('firefly.ask_site_owner', ['owner' => env('SITE_OWNER')]));

            return redirect(route('currencies.index'));
            // @codeCoverageIgnoreEnd
        }

        $data     = $request->getCurrencyData();
        $currency = $this->repository->update($currency, $data);
        $request->session()->flash('success', trans('firefly.updated_currency', ['name' => $currency->name]));
        Preferences::mark();

        if (1 === intval($request->get('return_to_edit'))) {
            // @codeCoverageIgnoreStart
            $request->session()->put('currencies.edit.fromUpdate', true);

            return redirect(route('currencies.edit', [$currency->id]));
            // @codeCoverageIgnoreEnd
        }

        return redirect($this->getPreviousUri('currencies.edit.uri'));
    }
}