<?php
/**
 * @link https://craftcms.com/
 * @copyright Copyright (c) Pixel & Tonic, Inc.
 * @license https://craftcms.github.io/license/
 */

namespace craft\widgets;

use Craft;
use craft\base\Widget;
use craft\helpers\Json;
use craft\web\assets\feed\FeedAsset;

/**
 * Feed represents a Feed dashboard widget.
 *
 * @author Pixel & Tonic, Inc. <support@pixelandtonic.com>
 * @since 3.0
 */
class Feed extends Widget
{
    // Static
    // =========================================================================

    /**
     * @inheritdoc
     */
    public static function displayName(): string
    {
        return Craft::t('app', 'Feed');
    }

    /**
     * @inheritdoc
     */
    public static function iconPath()
    {
        return Craft::getAlias('@app/icons/feed.svg');
    }

    // Properties
    // =========================================================================

    /**
     * @var string|null The feed URL
     */
    public $url;

    /**
     * @var string|null The feed title
     */
    public $title;

    /**
     * @var int The maximum number of feed items to display
     */
    public $limit;

    // Public Methods
    // =========================================================================

    /**
     * @inheritdoc
     */
    public function init()
    {
        parent::init();

        if (!$this->limit) {
            $this->limit = 5;
        }
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        $rules = parent::rules();
        $rules[] = [['url', 'title'], 'required'];
        $rules[] = [['url'], 'url'];
        $rules[] = [['limit'], 'integer', 'min' => 1];
        return $rules;
    }

    /**
     * @inheritdoc
     */
    public function getSettingsHtml()
    {
        return Craft::$app->getView()->renderTemplate('_components/widgets/Feed/settings',
            [
                'widget' => $this
            ]);
    }

    /**
     * @inheritdoc
     */
    public function getTitle(): string
    {
        return $this->title;
    }

    /**
     * @inheritdoc
     */
    public function getBodyHtml()
    {
        $view = Craft::$app->getView();
        $view->registerAssetBundle(FeedAsset::class);
        $view->registerJs(
            "new Craft.FeedWidget({$this->id}, " .
            Json::encode($this->url) . ', ' .
            Json::encode($this->limit) . ');'
        );

        return Craft::$app->getView()->renderTemplate('_components/widgets/Feed/body', [
            'limit' => $this->limit
        ]);
    }
}