<?php

namespace common\modules\blog\controllers\manage;

use common\modules\blog\entities\BlogPost;
use common\modules\blog\entities\BlogTag;
use common\modules\blog\forms\BlogPostForm;
use common\modules\blog\forms\search\BlogPostSearch;
use common\modules\blog\services\BlogPostManageService;
use Yii;
use yii\helpers\Url;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;
use yii\filters\AccessControl;
use yii\web\Response;

class PostController extends Controller
{
    private $service;

    public function __construct($id, $module, BlogPostManageService $service, $config = [])
    {
        parent::__construct($id, $module, $config);
        $this->service = $service;
    }

    public function behaviors(): array
    {
        return [
            'access' => [
                'class' => AccessControl::class,
                'rules' => [
                    [
                        'allow' => true,
                        'roles' => ['BlogManagement'],
                    ],
                    [    // all the action are accessible to admin
                        'allow' => true,
                        'roles' => ['admin'],
                    ],
                ],
            ],
            'verbs' => [
                'class' => VerbFilter::class,
                'actions' => [
                    'delete' => ['POST'],
                    'activate' => ['POST'],
                    'draft' => ['POST'],
                    'delete-photo' => ['POST'],
                    'move-photo-up' => ['POST'],
                    'move-photo-down' => ['POST'],
	                'restore-history' => ['POST'],
                    'clear-history' => ['POST'],
                ],
            ],
        ];
    }

	/**
	 * @return string
	 */
    public function actionIndex()
    {
        $searchModel = new BlogPostSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
        return $this->render( 'index', [
            'searchModel' => $searchModel,
            'dataProvider' => $dataProvider,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return string
	 * @throws NotFoundHttpException
	 */
    public function actionView($id)
    {
    	$post = $this->findModel($id);

    	$history = BlogPost::find()
		    ->andWhere(['OR', ['revision_id' => $id], ['id' => $id]])
		    ->orderBy(['revision_at' => SORT_DESC])
		    ->limit(20)
		    ->all();

        return $this->render('view', [
            'post' => $post,
	        'history' => $history,
        ]);
    }

    public function actionCreatePreview($id = null)
    {
    	$this->service->removePreviews();

	    $form = new BlogPostForm();
	    $form->type = BlogPost::TYPE_PREVIEW;
	    if ($form->load(Yii::$app->request->post()) && $form->validate()) {
		    try {
			    $post = $this->service->create( $form, BlogPost::TYPE_PREVIEW );
			    if ($id && !$post->image) {
			    	$real_post = BlogPost::findOne($id);
			    	if ($real_post->image) {
					    $post->image = $real_post->image;
					    $post->save();
					    $path = Yii::getAlias('@staticRoot/origin/posts');
					    $parts = pathinfo($real_post->image);
					    copy($path . '/' . $real_post->id . '.' . $parts['extension'], $path . '/' . $post->id . '.' .  $parts['extension']);
				    }
			    }
			    return $this->redirect(Url::to(Yii::$app->get('frontendUrlManager')->createAbsoluteUrl(['/blog/post/preview', 'id' => $post->id])));
		    } catch (\DomainException $e) {
			    Yii::$app->errorHandler->logException($e);
			    Yii::$app->session->setFlash('error', $e->getMessage());
		    }
	    }
	    $form->published_at = date('d.m.Y H:i:s');
	    return $this->render('create', [
		    'model' => $form,
	    ]);
    }

	public function actionCreate()
    {
        $form = new BlogPostForm();
        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
            try {
	            $post = $this->service->create( $form );
	            return $this->redirect( [ 'view', 'id' => $post->id ] );
            } catch (\DomainException $e) {
                Yii::$app->errorHandler->logException($e);
                Yii::$app->session->setFlash('error', $e->getMessage());
            }
        }
	    $form->published_at = date('d.m.Y H:i:s');
        return $this->render('create', [
            'model' => $form,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return string|\yii\web\Response
	 * @throws NotFoundHttpException
	 */
    public function actionUpdate($id)
    {
        $post = $this->findModel($id);
        $form = new BlogPostForm($post);
        $form->published_at = date('d.m.Y H:i:s', $form->published_at);
        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
            try {
                $this->service->edit($post->id, $form);
                return $this->redirect(['view', 'id' => $post->id]);
            } catch (\DomainException $e) {
                Yii::$app->errorHandler->logException($e);
                Yii::$app->session->setFlash('error', $e->getMessage());
            }
        }
        return $this->render('update', [
            'model' => $form,
            'post' => $post,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return Response
	 */
    public function actionDelete($id)
    {
        try {
            $this->service->remove($id);
        } catch (\DomainException $e) {
            Yii::$app->session->setFlash('error', $e->getMessage());
        }
        return $this->redirect(['index']);
    }

    /**
     * @param integer $id
     * @return mixed
     */
    public function actionActivate($id)
    {
        try {
            $this->service->activate($id);
        } catch (\DomainException $e) {
            Yii::$app->session->setFlash('error', $e->getMessage());
        }
        return $this->redirect(['view', 'id' => $id]);
    }

    /**
     * @param integer $id
     * @return mixed
     */
    public function actionDraft($id)
    {
        try {
            $this->service->draft($id);
        } catch (\DomainException $e) {
            Yii::$app->session->setFlash('error', $e->getMessage());
        }
        return $this->redirect(['view', 'id' => $id]);
    }

    public function actionTagSearch($q = null, $id = null)
    {
	    \Yii::$app->response->format = Response::FORMAT_JSON;
	    $out = ['results' => ['id' => '', 'text' => '']];
	    if (!is_null($q)) {
		    $data = BlogTag::find()->select('name as id, name as text')->andWhere(['like', 'name', $q])->orderBy('name')->limit(20)->asArray()->all();
		    $out['results'] = array_values($data);
	    }
	    elseif ($id > 0) {
	    	$tag_name = BlogTag::findOne($id)->name;
		    $out['results'] = ['id' => $tag_name, 'text' => $tag_name];
	    }
	    return $out;
    }

	public function actionPostSearch($q = null, $id = null)
	{
		\Yii::$app->response->format = Response::FORMAT_JSON;
		$out = ['results' => ['id' => '', 'text' => '']];
		if (!is_null($q)) {
			$data = BlogPost::find()->select('id, title as text')->andWhere(['like', 'title', $q])->limit(20)->asArray()->all();
			$out['results'] = array_values($data);
		}
		elseif ($id > 0) {
			$tag_name = BlogPost::findOne($id)->title;
			$out['results'] = ['id' => $tag_name, 'text' => $tag_name];
		}
		else {
			$data = BlogPost::find()->select('id, title as text')->orderBy(['created_at' => SORT_DESC])->limit(20)->asArray()->all();
			$out['results'] = array_values($data);
		}
		return $out;
	}

	public function actionRestoreHistory($id)
	{
		$post = $this->findModel($id);
		if ($post_id = $post->revision_id) {
			$this->service->restoreHistory($id, $post->revision_id);
			return $this->redirect(['/blog/manage/post/view', 'id' => $post_id]);
		}
		return $this->redirect(['/blog/manage/post/index']);
	}

	public function actionClearHistory($id)
	{
		$post = $this->findModel($id);
		$this->service->clearHistory($post);
		return $this->redirect(['/blog/manage/post/view', 'id' => $post->id]);
	}

	/**
	 * @param $id
	 *
	 * @return BlogPost
	 * @throws NotFoundHttpException
	 */
    protected function findModel($id): BlogPost
    {
        if (($model = BlogPost::findOne($id)) !== null) {
            return $model;
        }
        throw new NotFoundHttpException('The requested page does not exist.');
    }
}