<?php

namespace App\Http\Controllers\Admin\Widgets;

use App\CMS\Repositories\Widgets\Widget as WidgetRepository;
use App\CMS\Widgets\Exceptions\MissingParameterException;
use App\Http\Controllers\Admin\Controller;
use App\Http\Requests\EditWidgetRequest;
use App\Models\Widgets\Widget;

class EditWidget extends Controller
{
    /**
     * @var WidgetRepository
     */
    private $widgetRepository;

    /**
     * EditWidget constructor.
     *
     * @param WidgetRepository $widgetRepository
     */
    public function __construct(WidgetRepository $widgetRepository)
    {
        $this->widgetRepository = $widgetRepository;
    }

    /**
     * Render edit form
     *
     * @param Widget $widget
     *
     * @return mixed
     */
    public function getEdit(Widget $widget)
    {
        $presenter = call_user_func([$widget->widget_type_handler, 'getPresenter']);

        return call_user_func([$presenter, 'renderEditForm'], $widget);
    }

    /**
     * Save changes into database
     *
     * @param EditWidgetRequest $request
     * @param Widget            $widget
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function postEdit(EditWidgetRequest $request, Widget $widget)
    {
        try {
            $this->widgetRepository->edit($widget, $request);
        } catch (MissingParameterException $e) {
            // user omitted some value
            return $this->invalidWidget($e->getMessage());
        } catch (\Exception $e) {
            // something went wrong
            return $this->invalidWidget(trans('admin/widgets.cannotSave', ['exception' => $e->getMessage()]));
        }

        // redirect with success notification
        return redirect()
            ->back()
            ->with('success', trans('admin/widgets.successfullyEdited'));
    }

    /**
     * Deletes widget
     *
     * @param Widget $widget
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function deleteWidget(Widget $widget)
    {
        // check if widget area is deletable
        if (!$widget->deletable) {
            return redirect()
                ->back()
                ->with('error', trans('admin/widgets.notDeletable'));
        }

        $widget->delete();

        // redirect with success notification
        return redirect()
            ->route('widgets.overview')
            ->with('success', trans('admin/widgets.successfullyDeleted'));
    }

    private function invalidWidget($error)
    {
        return redirect()
            ->route('widgets.overview')
            ->withInput()
            ->with('error', $error);
    }
}