<?php
/**
 * AWB Shortcode Class
 */

class nK_AWB_Shortcode {

    /**
     * nK_AWB_Shortcode constructor.
     */
    public function __construct () {
        $this->init_options();
    }

    public function init_options () {
        // add shortcode
        add_shortcode('nk_awb', array($this, 'get_shortcode_out'));
    }

    /**
     * Scripts enqueued flag
     *
     * @var bool
     */
    static private $scripts_enqueued = false;

    /**
     * Enqueue styles and scripts
     */
    static function enqueue_front_assets () {
        if ( self::$scripts_enqueued ) {
            return;
        }
        self::$scripts_enqueued = true;

        wp_enqueue_script( 'nk-awb' );
        wp_enqueue_style( 'nk-awb' );
    }

    /**
     * Shortcode Output
     */
    public static function get_shortcode_out ($atts = array(), $content = null) {
        extract(shortcode_atts(array(
            "awb_type"              => "", // color, image, yt_vm_video, video

            "awb_stretch"           => "false",

            "awb_color"             => "",
            "awb_image"             => "",
            "awb_video"             => "",

            "awb_image_size"        => "full",
            "awb_image_background_size" => "cover",
            "awb_image_background_position" => "50% 50%",

            "awb_video_mp4"         => "",
            "awb_video_webm"        => "",
            "awb_video_ogv"         => "",
            "awb_video_start_time"  => 0,
            "awb_video_end_time"    => 0,
            "awb_video_volume"      => 0,
            "awb_video_always_play" => "false",

            "awb_parallax"          => "false", // scroll, scale, opacity, scroll-opacity, scale-opacity
            "awb_parallax_speed"    => 0.5,
            "awb_parallax_mobile"   => "false",

            "awb_mouse_parallax"    => "false",
            "awb_mouse_parallax_size" => 30, // pixels
            "awb_mouse_parallax_speed" => 10000, // ms

            "awb_after_vc_row"      => "false",
            "awb_after_vc_column"   => "false",

            "awb_class"             => "",
            "awb_styles"            => "",
        ), $atts));

        // prevent if no valid type
        if ($awb_type != 'color' && $awb_type != 'image' && $awb_type != 'yt_vm_video' && $awb_type != 'video') {
            return '';
        }

        // enqueue styles and scripts
        self::enqueue_front_assets();

        // prepare attributes and styles
        $awb_class = 'nk-awb ' . $awb_class;
        $awb_attributes = '';
        $awb_wrap_attributes = 'data-awb-type="' . esc_attr($awb_type) . '"';
        $awb_inner_styles = '';
        $awb_inner_attributes = '';

        // stretch
        if (filter_var($awb_stretch, FILTER_VALIDATE_BOOLEAN)) {
            $awb_wrap_attributes .= ' data-awb-stretch="true"';
        }

        // after vc_row
        if (filter_var($awb_after_vc_row, FILTER_VALIDATE_BOOLEAN)) {
            $awb_class .= ' nk-awb-after-vc_row';
        }

        // after vc_column
        if (filter_var($awb_after_vc_column, FILTER_VALIDATE_BOOLEAN)) {
            $awb_class .= ' nk-awb-after-vc_column';
        }

        // nk_awb shortcode with custom css from VC
        if (function_exists('vc_shortcode_custom_css_class') && isset($atts['vc_css'])) {
            $awb_class .= ' ' . vc_shortcode_custom_css_class($atts['vc_css']);
        }

        // overlay color
        $awb_overlay_html = '';
        if (isset($awb_color) && $awb_color) {
            $awb_overlay_html .= '<div class="nk-awb-overlay" style="background-color: ' . esc_attr($awb_color) . ';"></div>';
        }

        // types
        $awb_inner_html = '';
        if (isset($awb_image) && $awb_image && ($awb_type === 'image' || $awb_type === 'yt_vm_video' || $awb_type === 'video')) {
            if (is_numeric($awb_image) && $awb_image_background_size !== 'pattern') {
                $awb_inner_html .= wp_get_attachment_image($awb_image, $awb_image_size, false, array(
                    'class' => 'jarallax-img',
                    'style' => 'object-position: ' . $awb_image_background_position . ';',
                ));
            } else {
                if (is_numeric($awb_image)) {
                    $awb_image = wp_get_attachment_image_url($awb_image, $awb_image_size);
                }
                $awb_inner_styles .= 'background-image: url(\'' . esc_url($awb_image) . '\');';
                $awb_inner_styles .= 'background-position: ' . esc_attr($awb_image_background_position) . ';';
            }
        }

        // data image background attributes
        if ($awb_image_background_size) {
            $awb_wrap_attributes .= ' data-awb-image-background-size="' . esc_attr($awb_image_background_size) . '"';
        }
        if ($awb_image_background_position) {
            $awb_wrap_attributes .= ' data-awb-image-background-position="' . esc_attr($awb_image_background_position) . '"';
        }

        if ($awb_type === 'yt_vm_video') {
            $awb_wrap_attributes .= ' data-awb-video="' . esc_attr($awb_video) . '"';
            $awb_wrap_attributes .= ' data-awb-video-start-time="' . esc_attr($awb_video_start_time) . '"';
            $awb_wrap_attributes .= ' data-awb-video-end-time="' . esc_attr($awb_video_end_time) . '"';
            $awb_wrap_attributes .= ' data-awb-video-volume="' . esc_attr($awb_video_volume) . '"';

            // video always play
            if (filter_var($awb_video_always_play, FILTER_VALIDATE_BOOLEAN)) {
                $awb_wrap_attributes .= ' data-awb-video-always-play="true"';
            }
        }
        if ($awb_type === 'video') {
            $videos = '';
            if (isset($awb_video_mp4) && $awb_video_mp4) {
                if (is_numeric($awb_video_mp4)) {
                    $awb_video_mp4 = wp_get_attachment_url($awb_video_mp4);
                }
                if ($awb_video_mp4) {
                    $videos .= 'mp4:' . esc_url($awb_video_mp4);
                }
            }
            if (isset($awb_video_webm) && $awb_video_webm) {
                if (is_numeric($awb_video_webm)) {
                    $awb_video_webm = wp_get_attachment_url($awb_video_webm);
                }
                if ($awb_video_webm) {
                    if ($videos) {
                        $videos .= ',';
                    }
                    $videos .= 'webm:' . esc_url($awb_video_webm);
                }
            }
            if (isset($awb_video_ogv) && $awb_video_ogv) {
                if (is_numeric($awb_video_ogv)) {
                    $awb_video_ogv = wp_get_attachment_url($awb_video_ogv);
                }
                if ($awb_video_ogv) {
                    if ($videos) {
                        $videos .= ',';
                    }
                    $videos .= 'ogv:' . esc_url($awb_video_ogv);
                }
            }
            $awb_wrap_attributes .= ' data-awb-video="' . esc_attr($videos) . '"';
            $awb_wrap_attributes .= ' data-awb-video-start-time="' . esc_attr($awb_video_start_time) . '"';
            $awb_wrap_attributes .= ' data-awb-video-end-time="' . esc_attr($awb_video_end_time) . '"';
            $awb_wrap_attributes .= ' data-awb-video-volume="' . esc_attr($awb_video_volume) . '"';

            // video always play
            if (filter_var($awb_video_always_play, FILTER_VALIDATE_BOOLEAN)) {
                $awb_wrap_attributes .= ' data-awb-video-always-play="true"';
            }
        }

        // parallax
        if ($awb_parallax == 'scroll' || $awb_parallax == 'scale' || $awb_parallax == 'opacity' || $awb_parallax == 'scroll-opacity' || $awb_parallax == 'scale-opacity') {
            $awb_wrap_attributes .= ' data-awb-parallax="' . esc_attr($awb_parallax) . '"';
            $awb_wrap_attributes .= ' data-awb-parallax-speed="' . esc_attr($awb_parallax_speed) . '"';
            $awb_wrap_attributes .= ' data-awb-parallax-mobile="' . esc_attr($awb_parallax_mobile) . '"';
        }

        // mouse parallax
        if ($awb_mouse_parallax && $awb_mouse_parallax !== 'false') {
            $awb_wrap_attributes .= ' data-awb-mouse-parallax-size="' . esc_attr($awb_mouse_parallax_size) . '"';
            $awb_wrap_attributes .= ' data-awb-mouse-parallax-speed="' . esc_attr($awb_mouse_parallax_speed) . '"';
        }

        // outer styles
        if ($awb_styles) {
            $awb_attributes .= ' style="' . esc_attr($awb_styles) . '"';
        }

        // inner styles
        $awb_inner_attributes .= ' class="nk-awb-inner"';
        if ($awb_inner_styles) {
            $awb_inner_attributes .= ' style="' . $awb_inner_styles . '"';
        }

        // classes
        $awb_wrap_attributes = 'class="nk-awb-wrap" ' . $awb_wrap_attributes;

        return '<div class="' . esc_attr($awb_class) . '" ' . $awb_attributes . '>'
                    . do_shortcode($content)
                    . '<div ' . $awb_wrap_attributes . '>'
                        . $awb_overlay_html
                        . '<div ' . $awb_inner_attributes . '>' . $awb_inner_html . '</div>'
                    . '</div>'
                . '</div>';
    }
}