<?php

if (!defined('ABSPATH')) {
    exit;
}

class Blogmarks_Posts_Carousel extends Blogmarks_Widget_Base
{

    /**
     * Constructor.
     */
    public function __construct()
    {

        $this->widget_cssclass = 'widget_blogmarks_posts_carousel';
        $this->widget_description = __('Displays posts in carousel', 'blogmarks');
        $this->widget_id = 'blogmarks_posts_carousel';
        $this->widget_name = __('Blogmarks: Posts Carousel', 'blogmarks');
        $this->settings = array(
            'title' => array(
                'type' => 'text',
                'label' => __('Title', 'blogmarks'),
            ),
            'post_settings_heading' => array(
                'type' => 'heading',
                'label' => __('Post Settings', 'blogmarks'),
            ),
            'category' => array(
                'type' => 'dropdown-taxonomies',
                'label' => __('Select Category', 'blogmarks'),
                'desc' => __('Leave empty if you don\'t want the posts to be category specific', 'blogmarks'),
                'args' => array(
                    'taxonomy' => 'category',
                    'class' => 'widefat',
                    'hierarchical' => true,
                    'show_count' => 1,
                    'show_option_all' => __('&mdash; Select &mdash;', 'blogmarks'),
                ),
            ),
            'number' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 1,
                'max' => '',
                'std' => 5,
                'label' => __('Number of posts to show', 'blogmarks'),
            ),
            'offset' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 0,
                'max' => '',
                'std' => '',
                'label' => __('Offset', 'blogmarks'),
                'desc' => __('Can be useful if you want to skip certain number of posts. Leave as 0 if you do not want to use it.', 'blogmarks'),
            ),
            'orderby' => array(
                'type' => 'select',
                'std' => 'date',
                'label' => __('Order by', 'blogmarks'),
                'options' => array(
                    'date' => __('Date', 'blogmarks'),
                    'ID' => __('ID', 'blogmarks'),
                    'title' => __('Title', 'blogmarks'),
                    'rand' => __('Random', 'blogmarks'),
                ),
            ),
            'order' => array(
                'type' => 'select',
                'std' => 'desc',
                'label' => __('Order', 'blogmarks'),
                'options' => array(
                    'asc' => __('ASC', 'blogmarks'),
                    'desc' => __('DESC', 'blogmarks'),
                ),
            ),
            'meta_settings_heading' => array(
                'type' => 'heading',
                'label' => __('Post Meta Settings', 'blogmarks'),
            ),
            'post_meta' => array(
                'type' => 'multi-checkbox',
                'label' => __('Post Meta', 'blogmarks'),
                'options' => array(
                    'author' => __('Author', 'blogmarks'),
                    'read_time' => __('Post Read Time', 'blogmarks'),
                    'date' => __('Date', 'blogmarks'),
                    'comment' => __('Comment', 'blogmarks'),
                ),
                'std' => array(),
            ),
            'post_meta_icon' => array(
                'type' => 'checkbox',
                'label' => __('Show Post Meta Icon', 'blogmarks'),
                'desc' => __('Some Icons may show up regardless to provide better info.', 'blogmarks'),
                'std' => true,
            ),
            'date_format' => array(
                'type' => 'select',
                'label' => __('Date Format', 'blogmarks'),
                'desc' => __('Make sure to select Date from above for this to work.', 'blogmarks'),
                'options' => array(
                    'format_1' => __('Times Ago', 'blogmarks'),
                    'format_2' => __('Default Format', 'blogmarks'),
                ),
                'std' => 'format_1',
            ),
            'author_image' => array(
                'type' => 'checkbox',
                'label' => __('Show Author Image', 'blogmarks'),
                'desc' => __('Make sure to select Author from above for this to work.', 'blogmarks'),
                'std' => false,
            ),
            'excerpt_settings_heading' => array(
                'type' => 'heading',
                'label' => __('Excerpt Settings', 'blogmarks'),
            ),
            'show_excerpt' => array(
                'type' => 'checkbox',
                'label' => __('Show Excerpt', 'blogmarks'),
                'std' => false,
            ),
            'excerpt_length' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 0,
                'max' => '',
                'std' => 20,
                'label' => __('Excerpt Length', 'blogmarks'),
            ),
            'show_read_more' => array(
                'type' => 'checkbox',
                'label' => __('Show Read More', 'blogmarks'),
                'std' => false,
            ),
            'read_more_text' => array(
                'type' => 'text',
                'label' => __('Read More Text', 'blogmarks'),
                'desc' => __('Leave Empty if you want to use default text "Read More" ', 'blogmarks'),
            ),
            'read_more_style' => array(
                'type' => 'select',
                'label' => __('Read More Style', 'blogmarks'),
                'options' => blogmarks_get_read_more_styles(),
                'std' => 'style_2',
            ),
            'read_more_icon' => array(
                'type' => 'select',
                'label' => __('Read More Icon', 'blogmarks'),
                'options' => blogmarks_get_read_more_icons_list(),
                'std' => 'arrow-right',
            ),
            'category_settings_heading' => array(
                'type' => 'heading',
                'label' => __('Category Settings', 'blogmarks'),
            ),
            'show_category' => array(
                'type' => 'checkbox',
                'label' => __('Show Category', 'blogmarks'),
                'std' => true,
            ),
            'category_color' => array(
                'type' => 'select',
                'label' => __('Category Color', 'blogmarks'),
                'options' => blogmarks_get_category_color_display(),
                'std' => 'as_bg',
            ),
            'category_style' => array(
                'type' => 'select',
                'label' => __('Category Style', 'blogmarks'),
                'options' => blogmarks_get_category_styles(),
                'std' => 'style_2',
            ),
            'no_of_category' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 0,
                'max' => '',
                'std' => 1,
                'label' => __('Number of Category to Display', 'blogmarks'),
            ),
            'widget_settings_heading' => array(
                'type' => 'heading',
                'label' => __('Widget Settings', 'blogmarks'),
            ),
            'style' => array(
                'type' => 'select',
                'label' => __('Display Style', 'blogmarks'),
                'options' => array(
                    'style_1' => __('Style 1', 'blogmarks'),
                    'style_2' => __('Style 2', 'blogmarks'),
                ),
                'std' => 'style_1',
            ),
            'image_size' => array(
                'type' => 'select',
                'std' => 'medium_large',
                'label' => __('Featured Image Size', 'blogmarks'),
                'options' => array(
                    'large' => __('Large', 'blogmarks'),
                    'medium_large' => __('Medium Large', 'blogmarks'),
                    'medium' => __('Medium', 'blogmarks'),
                    'small' => __('Small', 'blogmarks'),
                ),
            ),
            'margin' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 0,
                'max' => 100,
                'std' => 24,
                'label' => __('Carousel margin', 'blogmarks'),
            ),
            'autoplay' => array(
                'type' => 'checkbox',
                'label' => __('Autoplay', 'blogmarks'),
                'std' => false,
            ),
            'arrows' => array(
                'type' => 'checkbox',
                'label' => __('Enable Arrows', 'blogmarks'),
                'std' => true,
            ),
            'dots' => array(
                'type' => 'checkbox',
                'label' => __('Enable Dots', 'blogmarks'),
                'std' => false,
            ),
            'column' => array(
                'type' => 'number',
                'step' => 1,
                'min' => 1,
                'max' => 5,
                'std' => 3,
                'label' => __('Column', 'blogmarks'),
            ),
            'enable_post_format_icon' => array(
                'type' => 'checkbox',
                'label' => __('Enable Post Format Icon', 'blogmarks'),
                'std' => false,
            ),
            'inverted_block_color' => array(
                'type' => 'checkbox',
                'label' => __('Inverted Color', 'blogmarks'),
                'desc' => __('Can be used if you have dark background and want lighter color on the text.', 'blogmarks'),
                'std' => false,
            ),
            'title_limit' => array(
                'type' => 'select',
                'label' => __('Title Line Limit', 'blogmarks'),
                'options' => blogmarks_get_title_limit_choices(),
                'std' => '',
            ),
        );

        parent::__construct();
    }

    /**
     * Query the posts and return them.
     *
     * @param array $args
     * @param array $instance
     * @return WP_Query
     */
    public function get_posts($args, $instance)
    {
        $number = !empty($instance['number']) ? absint($instance['number']) : $this->settings['number']['std'];
        $orderby = !empty($instance['orderby']) ? sanitize_title($instance['orderby']) : $this->settings['orderby']['std'];
        $order = !empty($instance['order']) ? sanitize_title($instance['order']) : $this->settings['order']['std'];
        $offset = !empty($instance['offset']) ? sanitize_text_field($instance['offset']) : $this->settings['offset']['std'];

        $query_args = array(
            'posts_per_page' => $number,
            'post_status' => 'publish',
            'no_found_rows' => 1,
            'orderby' => $orderby,
            'order' => $order,
            'ignore_sticky_posts' => 1,
        );

        if ($offset && 0 != $offset) {
            $query_args['offset'] = absint($offset);
        }

        if (!empty($instance['category']) && -1 != $instance['category'] && 0 != $instance['category']) {
            $query_args['tax_query'][] = array(
                'taxonomy' => 'category',
                'field' => 'term_id',
                'terms' => $instance['category'],
            );
        }

        return new WP_Query(apply_filters('blogmarks_posts_carousel_query_args', $query_args));
    }

    /**
     * Output widget.
     *
     * @param array $args
     * @param array $instance
     * @see WP_Widget
     *
     */
    public function widget($args, $instance)
    {

        ob_start();

        if (($posts = $this->get_posts($args, $instance)) && $posts->have_posts()) {
            $this->widget_start($args, $instance);

            do_action('blogmarks_before_posts_carousel');

            $overlay = $wrapper_class = $slider_nav = '';
            $display_style = isset($instance['style']) ? $instance['style'] : $this->settings['style']['std'];
            if ('style_2' == $display_style) {
                $overlay = '<span aria-hidden="true" class="site-background-overlay has-gradient-background"></span>';
            }

            $wrapper_class = $display_style;


            $margin = isset($instance['margin']) ? absint($instance['margin']) : $this->settings['margin']['std'];


            $autoplay = isset($instance['autoplay']) ? $instance['autoplay'] : $this->settings['autoplay']['std'];
            $dots = isset($instance['dots']) ? $instance['dots'] : $this->settings['dots']['std'];
            if ($dots) {
                $slider_nav .= '<div class="swiper-pagination"></div>';
            }
            $arrows = isset($instance['arrows']) ? $instance['arrows'] : $this->settings['arrows']['std'];
            if ($arrows) {
                $slider_nav .= '<div class="swiper-button-next"></div><div class="swiper-button-prev"></div>';
            }
            $column = isset($instance['column']) ? absint($instance['column']) : $this->settings['column']['std'];

            $wrapper_class .= " column-$column";

            // Build attributes.
            $data_slider = array();

            $data_slider['spaceBetween'] = $margin;

            if ($autoplay) :
                $data_slider['autoplay'] = array(
                    'delay' => 5000,
                );
            endif;

            if ($column == 2) {
                $data_slider['breakpoints'] = array(
                    '576' => array(
                        'slidesPerView' => 2,
                    ),
                );
            } elseif ($column == 3) {
                $data_slider['breakpoints'] = array(
                    '576' => array(
                        'slidesPerView' => 2,
                    ),
                    '768' => array(
                        'slidesPerView' => 3,
                    ),
                );
            } elseif ($column == 4) {
                $data_slider['breakpoints'] = array(
                    '576' => array(
                        'slidesPerView' => 2,
                    ),
                    '768' => array(
                        'slidesPerView' => 3,
                    ),
                    '992' => array(
                        'slidesPerView' => 4,
                    ),
                );
            } elseif ($column == 5) {
                $data_slider['breakpoints'] = array(
                    '576' => array(
                        'slidesPerView' => 2,
                    ),
                    '768' => array(
                        'slidesPerView' => 3,
                    ),
                    '992' => array(
                        'slidesPerView' => 4,
                    ),
                    '1200' => array(
                        'slidesPerView' => 5,
                    ),
                );
            }

            $show_category = isset($instance['show_category']) ? $instance['show_category'] : $this->settings['show_category']['std'];
            if ($show_category) {
                $cat_style = isset($instance['category_style']) ? $instance['category_style'] : $this->settings['category_style']['std'];
                $color = isset($instance['category_color']) ? $instance['category_color'] : $this->settings['category_color']['std'];
                $limit = isset($instance['no_of_category']) ? $instance['no_of_category'] : $this->settings['no_of_category']['std'];
            }
            $enabled_post_meta = isset($instance['post_meta']) ? $instance['post_meta'] : $this->settings['post_meta']['std'];
            $meta_settings['date_format'] = isset($instance['date_format']) ? $instance['date_format'] : $this->settings['date_format']['std'];
            $meta_settings['author_image'] = isset($instance['author_image']) ? $instance['author_image'] : $this->settings['author_image']['std'];
            $meta_settings['show_icons'] = isset($instance['post_meta_icon']) ? $instance['post_meta_icon'] : $this->settings['post_meta_icon']['std'];
            $title_limit = isset($instance['title_limit']) ? $instance['title_limit'] : $this->settings['title_limit']['std'];
            $enable_post_format_icon = isset($instance['enable_post_format_icon']) ? $instance['enable_post_format_icon'] : $this->settings['enable_post_format_icon']['std'];
            $show_excerpt = isset($instance['show_excerpt']) ? $instance['show_excerpt'] : $this->settings['show_excerpt']['std'];
            if ($show_excerpt) {
                $excerpt_length = isset($instance['excerpt_length']) ? $instance['excerpt_length'] : $this->settings['excerpt_length']['std'];
            }
            $show_read_more = isset($instance['show_read_more']) ? $instance['show_read_more'] : $this->settings['show_read_more']['std'];
            if ($show_read_more) {
                $read_more_text = isset($instance['read_more_text']) ? $instance['read_more_text'] : '';
                $read_more_style = isset($instance['read_more_style']) ? $instance['read_more_style'] : $this->settings['read_more_style']['std'];
                $read_more_icon = isset($instance['read_more_icon']) ? $instance['read_more_icon'] : $this->settings['read_more_icon']['std'];
            }
            $inverted_block_color = isset($instance['inverted_block_color']) ? $instance['inverted_block_color'] : $this->settings['inverted_block_color']['std'];

            // Inverted Color.
            if ($inverted_block_color) {
                $wrapper_class .= ' widget-inverted-scheme';
            }
            ?>

            <div class="site-swiper-wrapper as_carousel <?php echo esc_attr($wrapper_class); ?>">
                <div class="swiper" data-slider='<?php echo esc_attr(json_encode($data_slider)); ?>'>
                    <div class="swiper-wrapper">
                        <?php
                        while ($posts->have_posts()) :
                            $posts->the_post();

                            // Build article details here so that it can be used in different areas.
                            ob_start();
                            ?>
                            <div class="entry-summary">
                                <?php
                                if ($show_category) {
                                    echo '<div class="entry-categories-wrapper">';
                                    blogmarks_post_categories($cat_style, $color, $limit);
                                    echo '</div>';
                                }
                                ?>
                                <h3 class="entry-title entry-title-medium title-line-clamp <?php echo esc_attr($title_limit); ?>">
                                    <a href="<?php the_permalink(); ?>">
                                        <?php the_title(); ?>
                                    </a>
                                </h3>
                                <?php blogmarks_post_meta_info($enabled_post_meta, $meta_settings); ?>

                                <?php
                                if ($show_excerpt && $excerpt_length > 0) {
                                    ?>
                                    <p class="entry-excerpt">
                                        <?php echo wp_trim_words(get_the_excerpt(), $excerpt_length, '&hellip;'); ?>
                                    </p>
                                <?php } ?>
                                <?php
                                if ($show_read_more) {
                                    ?>
                                    <a href="<?php the_permalink(); ?>"
                                       class="blogmarks-btn-link <?php echo esc_attr($read_more_style); ?>">
                                        <?php
                                        if ($read_more_text) {
                                            echo esc_html($read_more_text);
                                        } else {
                                            esc_html_e('Read More', 'blogmarks');
                                        }
                                        if ($read_more_icon) {
                                            ?>
                                            <span><?php blogmarks_the_theme_svg($read_more_icon); ?></span>
                                            <?php
                                        }
                                        ?>
                                    </a>
                                    <?php
                                }
                                ?>

                            </div>
                            <?php
                            $article_details = ob_get_clean();
                            // End building article details.

                            if (has_post_thumbnail()) {
                                ?>
                                <div class="swiper-slide">
                                    <article id="carousel-post-<?php the_ID(); ?>" <?php post_class('widget-post carousel-widget-post site-grid-post'); ?>>
                                        <div class="entry-image entry-image-<?php echo isset($instance['image_size']) ? esc_attr($instance['image_size']) : ''; ?>">
                                        <a href="<?php the_permalink(); ?>">
                                                <?php echo $overlay; ?>

                                                <?php
                                                if ($enable_post_format_icon) {
                                                    blogmarks_post_format_icon('center');
                                                }
                                                ?>

                                                <?php
                                                the_post_thumbnail(
                                                    'medium_large',
                                                    array(
                                                        'alt' => the_title_attribute(
                                                            array(
                                                                'echo' => false,
                                                            )
                                                        ),
                                                    )
                                                );
                                                ?>
                                            </a>
                                            <?php
                                            if ('style_2' == $display_style) {
                                                echo $article_details;
                                            }
                                            ?>
                                        </div>
                                        <?php
                                        if ('style_1' == $display_style) {
                                            echo $article_details;
                                        }
                                        ?>

                                    </article>
                                </div>
                                <?php
                            }
                        endwhile;
                        wp_reset_postdata();
                        ?>
                    </div>
                </div>
                <?php
                if ($slider_nav) :
                    echo $slider_nav;
                endif;
                ?>
            </div>

            <?php

            do_action('blogmarks_after_posts_carousel');

            $this->widget_end($args);
        }

        echo ob_get_clean();
    }
}