<?php
namespace EssentialBlocks\Blocks;

use EssentialBlocks\Utils\Helper;

class PostCarousel extends PostBlock
{
    protected $frontend_scripts = [
        'essential-blocks-post-carousel-frontend',
        'essential-blocks-slickjs'
     ];
    protected $frontend_styles = [

        'essential-blocks-slick-style',
        'essential-blocks-fontawesome',
        'essential-blocks-common-style'
     ];

    protected static $default_attributes = [
        'arrows'           => true,
        'dots'             => true,
        'dotPreset'        => 'dot-circle',
        'autoplaySpeed'    => 3000,
        'speed'            => 500,
        'adaptiveHeight'   => true,
        'autoplay'         => true,
        'infinite'         => true,
        'pauseOnHover'     => true,
        'slideToShowRange' => 3,
        'titleLength'      => '10',
        'leftArrowIcon'    => 'fas fa-chevron-circle-left',
        'rightArrowIcon'   => 'fas fa-chevron-circle-right',
        'addIcon'          => false,
        'showFallbackImg'  => false,
        'fallbackImgUrl'   => '',
        'isRTLEnable'  => false
     ];

    public function get_default_attributes()
    {
        return array_merge( parent::$default_attributes, self::$default_attributes );
    }

    /**
     * Unique name of the block.
     *
     * @return string
     */
    public function get_name()
    {
        return 'post-carousel';
    }

    /**
     * Register all other scripts
     *
     * @return void
     */
    public function register_scripts()
    {
        $this->assets_manager->register(
            'post-carousel-frontend',
            $this->path() . '/frontend.js',
            [ 'jquery', 'essential-blocks-controls-frontend' ]
        );
        $this->assets_manager->register( 'slickjs', 'js/slick.min.js' );
    }

    /**
     * Block render callback.
     *
     * @param mixed $attributes
     * @param mixed $content
     * @return mixed
     */
    public function render_callback( $attributes, $content )
    {
        if ( is_admin() ) {
            return;
        }

        $queryData = isset( $attributes[ 'queryData' ] ) ? $attributes[ 'queryData' ] : [];

        $attributes = wp_parse_args( $attributes, $this->get_default_attributes() );

        $classHook = isset( $attributes[ 'classHook' ] ) ? $attributes[ 'classHook' ] : '';

        $_default_attributes = array_keys( parent::$default_attributes );
        if ( isset( $attributes[ 'leftArrowIcon' ] ) ) {
            $_default_attributes[  ] = 'leftArrowIcon';
        }
        if ( isset( $attributes[ 'rightArrowIcon' ] ) ) {
            $_default_attributes[  ] = 'rightArrowIcon';
        }
        $_essential_attrs = [  ];
        array_walk(
            $_default_attributes,
            function ( $key ) use ( $attributes, &$_essential_attrs ) {
                $_essential_attrs[ $key ] = $attributes[ $key ];
            }
        );

        $_essential_attrs[ 'showFallbackImg' ] = isset( $_essential_attrs[ 'showFallbackImg' ] ) ? $_essential_attrs[ 'showFallbackImg' ] : false;
        $_essential_attrs[ 'isRTLEnable' ] = isset( $_essential_attrs[ 'isRTLEnable' ] ) ? $_essential_attrs[ 'isRTLEnable' ] : false;

        if ( isset( $_essential_attrs[ 'showBlockContent' ] ) && $_essential_attrs[ 'showBlockContent' ] === false ) {
            return;
        }

        // Query Result
        $result = $this->get_posts( $queryData );
        $query  = [  ];
        if ( isset( $result->posts ) && is_array( $result->posts ) && count( $result->posts ) > 0 ) {
            $query = apply_filters( 'eb_post_carousel_query_results', $result->posts );
        }

        $_slider_attributes = self::$default_attributes;

        unset( $_slider_attributes[ 'dotPreset' ] );
        unset( $_slider_attributes[ 'titleLength' ] );

        $_slider_attributes[ 'TABslideToShowRange' ] = 2;
        $_slider_attributes[ 'MOBslideToShowRange' ] = 1;

        $_slider_settings = [  ];
        array_walk(
            $_slider_attributes,
            function ( $value, $key ) use ( $attributes, &$_slider_settings ) {
                $_slider_settings[ $key ] = isset( $attributes[ $key ] ) ? $attributes[ $key ] : $value;
            }
        );

        ob_start();
        Helper::views(
            'post-carousel',
            array_merge(
                $attributes,
                [
                    'queryData'      => $queryData,
                    'essentialAttr'  => $_essential_attrs,
                    'sliderSettings' => $_slider_settings,
                    'classHook'      => $classHook,
                    'thumbnailSize'  => '',
                    'posts'          => $query,
                    'block_object'   => $this
                 ]
            )
        );

        return ob_get_clean();
    }
}