<?php

if (!defined('ABSPATH')) {
die('No direct access.');
}
/**
 * MS Theme base - Use to instanciate and store theme functions. 
 * Extend it if you need to change / add functionality to your theme.
 */
class MetaSlider_Theme_Base
{
    /**
     * Theme ID
     *
     * @var string
     */
    public $id;

    /**
     * Registered Themes - used to give access to the themes options and settings
     *
     * @var array
     */
    public static $themes = array();

    /**
     * Construct - set private for singleton pattern.
     *
     * @param int   $id      ID
     * @param int   $version Version
     * @param array $assets  Assets array
     */
    public function __construct($id, $version, $assets = array())
    {
        $this->id = $id;
        $this->version = $version;
        $this->assets = apply_filters('metaslider_theme_assets', $assets, $this->id);
        
        // store the current instance, to give it global access via MetaSlider_Theme_Base::$themes['theme_id']
        self::$themes[$this->id] = $this;

        $this->init();
    }

    /**
     * Initialize hooks
     */
    public function init()
    {
        // Enqueue assets
        add_action('metaslider_register_public_styles', array($this, 'enqueue_assets'));

        // override the arrows markup
        add_filter('metaslider_flex_slider_parameters', array($this, 'update_parameters'), 99, 3);
        add_filter('metaslider_responsive_slider_parameters', array($this, 'update_parameters'), 99, 3);
        add_filter('metaslider_nivo_slider_parameters', array($this, 'update_parameters'), 99, 3);
        add_filter('metaslider_coin_slider_parameters', array($this, 'update_parameters'), 99, 3);

        // Pro - override the arrows markup for the filmstrip
        add_filter('metaslider_flex_slider_filmstrip_parameters', array($this, 'update_parameters'), 99, 3);

        // Adds classes for thumbnails and filmstrip navigation
        add_filter('metaslider_css_classes', array($this, 'slider_classes'), 20, 3);
    }

    /**
     * Slider Classes - Filter
     *
     * @param string $classes         Slider Classes
     * @param int    $slider_id       Slider ID
     * @param array  $slider_settings Slider Settings
     * @return string
     */
    public function slider_classes($classes, $slider_id, $slider_settings)
    {
        if (isset($slider_settings['carouselMode']) && 'true' === $slider_settings['carouselMode']) {
            $classes .= ' has-carousel-mode';
        }
        if ('true' == $slider_settings['navigation']) {
            $classes .= ' has-dots-nav';
        }
        if ('filmstrip' == $slider_settings['navigation']) {
            $classes .= ' has-filmstrip-nav';
        }
        return $classes;
    }

    /**
     * Enqueues theme specific styles and scripts
     */
    public function enqueue_assets()
    {
        foreach ($this->assets as $asset) {
            if ('css' == $asset['type']) {
                wp_enqueue_style('metaslider_' . $this->id . '_theme_styles', METASLIDER_THEMES_URL . $this->id . $asset['file'], isset($asset['dependencies']) ? $asset['dependencies'] : array(), $this->version);
            }

            if ('js' == $asset['type']) {
                wp_enqueue_script('metaslider_' . $this->id . '_theme_script', METASLIDER_THEMES_URL . $this->id . $asset['file'], isset($asset['dependencies']) ? $asset['dependencies'] : array(), $this->version, isset($asset['in_footer']) ? $asset['in_footer'] : true);
            }
        }
    }

    /**
     * Adds parameters for this theme. Used mainly for changing the Arrows text + icons
     *
     * @param array      $options      The slider plugin options
     * @param int|string $slideshow_id The slideshow options
     * @param array      $settings     The slideshow settings
     */
    public function update_parameters($options, $slideshow_id, $settings)
    {
        $theme_id = false;

        if (!$this->slider_parameters) {
return $options;
        }

        // if preview
        if (isset($_REQUEST['action']) && 'ms_get_preview' == $_REQUEST['action']) {
            if (isset($_REQUEST['theme_id'])) {
                $theme_id = sanitize_text_field($_REQUEST['theme_id']);
            }
        }
    
        // only fetch the saved theme if the preview theme isn't set
        if (!$theme_id) {
            $theme = get_post_meta($slideshow_id, 'metaslider_slideshow_theme', true);
            if (isset($theme['folder'])) {
                $theme_id = $theme['folder'];
            }
        }

        if ($this->id == $theme_id) {
            return array_merge($options, apply_filters('metaslider_theme_' . $this->id . '_slider_parameters', $this->slider_parameters));
        }

        return $options;
    }

    /**
     * Add manual controls to this theme
     *
     * @param array  $html         - The flexslider options
     * @param string $slideshow_id - the id of the slideshow
     * @param array  $settings     - the id of the slideshow
     *
     * @return array
     */
    public function add_title_to_replace_dots($html, $slideshow_id, $settings)
    {
        // Only do this on this theme
        $theme = get_post_meta($slideshow_id, 'metaslider_slideshow_theme', true);
        if ($this->id !== $theme['folder']) {
return $html;
        }

        // We want to insert this after the closing ul but before the container div
        $nav = "</ul>";

        // Only enable this for dots nav
        if ('true' === $settings['navigation'] && 'false' === $settings['carouselMode']) {
            $nav .= "<ol class='flex-control-nav titleNav-{$slideshow_id}'>";
            foreach ($this->get_slides($slideshow_id) as $count => $slide) {
                // Check if the title is inherited or manually set
                if ((bool) get_post_meta($slide->ID, 'ml-slider_inherit_image_title', true)) {
                    $attachment = get_post(get_post_thumbnail_id($slide->ID));
                    $title = $attachment->post_title;
                } else {
                    $title = get_post_meta($slide->ID, 'ml-slider_title', true);
                }

                // Check if it's a string and not '' and use the count + 1
                if (!is_string($title) || empty($title)) {
                    $title = $count;
                }
                $nav .= "<li><a href='#'>{$title}</a></li>";
            }
            $nav .= "</ol>";
        }
        return str_replace('</ul>', $nav, $html);
    }

    /**
     * Copy the query from ml-slider
     *
     * @param int $slideshow_id - the id of the slideshow
     * @return WP_Query
     */
    private function get_slides($slideshow_id)
    {
        $settings = get_post_meta($slideshow_id, 'ml-slider_settings', true);
        $args = array(
            'force_no_custom_order' => true,
            'orderby' => 'menu_order',
            'order' => 'ASC',
            'post_type' => array('attachment', 'ml-slide'),
            'post_status' => array('inherit', 'publish'),
            'lang' => '', // polylang, ingore language filter
            'suppress_filters' => 1, // wpml, ignore language filter
            'posts_per_page' => -1,
            'tax_query' => array(
                array(
                    'taxonomy' => 'ml-slider',
                    'field' => 'slug',
                    'terms' => $slideshow_id
                )
            )
        );

        $args = apply_filters('metaslider_populate_slides_args', $args, $slideshow_id, $settings);
        $slides = get_posts($args);
        
        $available_slides = array();
        foreach ($slides as $slide) {
            $type = get_post_meta($slide->ID, 'ml-slider_type', true);
            $type = $type ? $type : 'image'; // Default ot image

            // If this filter exists, that means the slide type is available (i.e. pro slides)
            if (has_filter("metaslider_get_{$type}_slide")) {
                array_push($available_slides, $slide);
            }
        }
        return $available_slides;
    }
}