<?php
namespace App\Http\Controllers\Admin\Contents;

use App\CMS\Enumerations\ContentStatuses;
use App\Events\DeleteContent;
use App\Events\MakeDraftFromContent;
use App\Events\PublishContent;
use App\Events\SetHomepage;
use App\Http\Controllers\Admin\Controller;
use App\Models\Content\Content;
use Illuminate\Support\Facades\Event;
use Mcamara\LaravelLocalization\Facades\LaravelLocalization;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class ContentActions extends Controller
{
    /**
     * Method for changing page status
     * This method is called in static page overview from quick actions. It checks if status is valid, if page exists
     * and updates status.
     *
     * @param $id
     * @param $status
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function changeStatus($id, $status)
    {
        // get possible statuses
        $statuses = ContentStatuses::getWithTranslations();

        // check if given status is valid
        if (!isset($statuses[$status])) {
            return redirect()
                ->route('content.overview')
                ->with('error', trans('admin/contents.invalidStatus'));
        }

        try {
            // try to find this page
            $page = Content::findOrFail($id);
        } catch (NotFoundHttpException $e) {
            // page not found
            return redirect()
                ->route('content.overview')
                ->with('error', trans('admin/contents.invalidPage'));
        }

        // try to change the page
        list ($revision, $changedColumns) = $page->updateWithHistory(['status' => 'status'], ['status' => $status]);

        // was something changed?
        if ($changedColumns == 0) {
            return redirect()
                ->route('content.edit', ['id' => $page->id])
                ->with('error', trans('admin/contents.nothingToEdit'));
        }

        // fire events
        if ($status != Content::STATUS_DRAFT) {
            Event::fire(new PublishContent($page, $revision));
        } else {
            Event::fire(new MakeDraftFromContent($page, $revision));
        }

        // redirect back to overview with info for user
        return redirect()
            ->route('content.overview')
            ->with('success', trans('admin/contents.statusChanged'));
    }

    /**
     * Delete page
     *
     * @param $id
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function delete($id)
    {
        try {
            // try to find this page
            $page = Content::findOrFail($id);
        } catch (NotFoundHttpException $e) {
            // page not found
            return redirect()
                ->route('content.overview')
                ->with('error', trans('admin/contents.invalidPage'));
        }

        // change url to something unique
        $oldURL = $page->url;
        $page->url .= uniqid('_deleted_');
        $page->save();

        // delete page
        $page->delete();

        // let module to delete some extra content created during page's life
        call_user_func([$page->module_handler, 'delete'], $page);

        // trigger delete event
        Event::fire(new DeleteContent($page));

        // redirect back to overview with info for user
        return redirect()
            ->route('content.overview')
            ->with('success', trans('admin/contents.pageDeleted', [
                'name' => $page->title,
                'url'  => $oldURL
            ]));
    }

    /**
     * Sets page as homepage
     *
     * @param $id
     *
     * @return \Illuminate\Http\RedirectResponse
     */
    public function setHomepage($id)
    {
        try {
            // try to find this page
            /**
             * @var $page Content
             */
            $page = Content::findOrFail($id);
        } catch (NotFoundHttpException $e) {
            // page not found
            return redirect()
                ->back()
                ->with('error', trans('admin/contents.invalidPage'));
        }

        // disable any other existing homepage
        Content::where('is_homepage', 1)
               ->where('language', LaravelLocalization::getCurrentLocale())
               ->update(['is_homepage' => 0]);

        // set new homepage
        list ($revision, $changedColumns) = $page->updateWithHistory(['is_homepage' => 'is_homepage'], ['is_homepage' => 1]);

        // was something changed?
        if ($changedColumns == 0) {
            return redirect()
                ->back()
                ->with('error', trans('admin/contents.nothingToEdit'));
        }

        // trigger delete event
        Event::fire(new SetHomepage($page, $revision));

        // redirect back to overview with info for user
        return redirect()
            ->back()
            ->with('success', trans('admin/contents.homepageSetup', [
                'name' => $page->title,
                'url'  => $page->url
            ]));
    }
}