<?php
/**
 ** Adds sparklestore_product_widget widget.
**/
add_action('widgets_init', 'sparklestore_product_widget');
function sparklestore_product_widget() {
    register_widget('sparklestore_product_widget_area');
}

class sparklestore_product_widget_area extends WP_Widget {

    /**
     * Register widget with WordPress.
    **/
    public function __construct() {
        parent::__construct(
            'sparklestore_product_widget_area', __('SP: Woo Product Area','sparklestore'), array(
            'description' => __('A widget that shows woocommerce all type product (Latest, Feature, On Sale, Up Sale) and selected category products', 'sparklestore')
        ));
    }
    
    private function widget_fields() {
        

        $prod_type = array(
            'category'        => __('Category', 'sparklestore'),
            'latest_product'  => __('Latest Product', 'sparklestore'),
            'upsell_product'  => __('UpSell Product', 'sparklestore'),
            'feature_product' => __('Feature Product', 'sparklestore'),
            'on_sale'         => __('On Sale Product', 'sparklestore'),
        );

          $taxonomy     = 'product_cat';
          $empty        = 1;
          $orderby      = 'name';  
          $show_count   = 0;      // 1 for yes, 0 for no
          $pad_counts   = 0;      // 1 for yes, 0 for no
          $hierarchical = 1;      // 1 for yes, 0 for no  
          $title        = '';  
          $empty        = 0;
          $args = array(
            'taxonomy'     => $taxonomy,
            'orderby'      => $orderby,
            'show_count'   => $show_count,
            'pad_counts'   => $pad_counts,
            'hierarchical' => $hierarchical,
            'title_li'     => $title,
            'hide_empty'   => $empty
          );

          $woocommerce_categories = array();
          $woocommerce_categories_obj = get_categories($args);
          $woocommerce_categories[''] = __('Select Product Category','sparklestore');
          foreach ($woocommerce_categories_obj as $category) {
            $woocommerce_categories[$category->term_id] = $category->name;
          }

        $fields = array( 
            
            'sparklestore_product_title' => array(
                'sparklestore_widgets_name' => 'sparklestore_product_title',
                'sparklestore_widgets_title' => __('Title', 'sparklestore'),
                'sparklestore_widgets_field_type' => 'title',
            ),
            'sparklestore_product_short_desc' => array(
                'sparklestore_widgets_name' => 'sparklestore_product_short_desc',
                'sparklestore_widgets_title' => __('Very Short Description', 'sparklestore'),
                'sparklestore_widgets_field_type' => 'textarea',
                'sparklestore_widgets_row'    => 4,
            ),
            'sparklestore_product_type' => array(
                'sparklestore_widgets_name' => 'sparklestore_product_type',
                'sparklestore_widgets_title' => __('Select Product Type', 'sparklestore'),
                'sparklestore_widgets_field_type' => 'select',
                'sparklestore_widgets_field_options' => $prod_type
            ),
            'sparklestore_woo_category' => array(
                'sparklestore_widgets_name' => 'sparklestore_woo_category',
                'sparklestore_widgets_title' => __('Select Category', 'sparklestore'),
                'sparklestore_widgets_field_type' => 'select',
                'sparklestore_widgets_field_options' => $woocommerce_categories
            ),
            'sparklestore_product_number' => array(
                'sparklestore_widgets_name' => 'sparklestore_product_number',
                'sparklestore_widgets_title' => __('Enter Number of Products Show', 'sparklestore'),
                'sparklestore_widgets_field_type' => 'number',
            ),                                 
        );

        return $fields;
    }

    public function widget($args, $instance) {
        extract($args);
        extract($instance);
        
        /**
        ** wp query for first block
        **/  
        $title            = esc_attr( $instance['sparklestore_product_title'] ); 
        $shot_desc        = esc_textarea( $instance['sparklestore_product_short_desc'] );
        $product_type     = esc_attr( $instance['sparklestore_product_type'] );
        $product_category = intval( $instance['sparklestore_woo_category'] );
        $product_number   = intval( $instance['sparklestore_product_number'] );

        $product_args       =   '';
        global $product_label_custom;
        if($product_type == 'category'){
            $product_args = array(
                'post_type' => 'product',
                'tax_query' => array(
                    array('taxonomy'  => 'product_cat',
                        'field'     => 'term_id', 
                        'terms'     => $product_category                                                                 
                    )
                ),
                'posts_per_page' => $product_number
            );
        }
        elseif($product_type == 'latest_product'){
            $product_label_custom = __('New', 'sparklestore');
            $product_args = array(
                'post_type' => 'product',
                'tax_query' => array(
                    array('taxonomy'  => 'product_cat',
                        'field'     => 'term_id', 
                        'terms'     => $product_category                                                                 
                    )
                ),
                'posts_per_page' => $product_number
            );
        }

        elseif($product_type == 'upsell_product'){
            $product_args = array(
                'post_type'         => 'product',
                'posts_per_page'    => 10,
                'meta_key'          => 'total_sales',
                'orderby'           => 'meta_value_num',
                'posts_per_page'    => $product_number
            );
        }

        elseif($product_type == 'feature_product'){
            $product_args = array(
                'post_type'        => 'product',  
                'meta_key'         => '_featured',  
                'meta_value'       => 'yes', 
                'tax_query' => array(
                    array('taxonomy'  => 'product_cat',
                        'field'     => 'term_id', 
                        'terms'     => $product_category                                                                 
                    )
                ), 
                'posts_per_page'   => $product_number   
            );
        }

        elseif($product_type == 'on_sale'){
            $product_args = array(
            'post_type'      => 'product',
            'meta_query'     => array(
                'relation' => 'OR',
                array( // Simple products type
                    'key'           => '_sale_price',
                    'value'         => 0,
                    'compare'       => '>',
                    'type'          => 'numeric'
                ),
                array( // Variable products type
                    'key'           => '_min_variation_sale_price',
                    'value'         => 0,
                    'compare'       => '>',
                    'type'          => 'numeric'
                )
            ));
        }
        
        echo $before_widget; 
    ?> 

        <div class="producttype-wrap">            
            <div class="container">                  
            <div class="row">                  
                <div id="productslider" class="productslidearea blocktitlewrap">

                    <div class="blocktitlewrap">                        
                        <div class="blocktitle">
                            <?php if(!empty( $title )) { ?><h2><?php echo $title; ?></h2><?php } ?>
                            <?php if(!empty( $shot_desc )) { ?><p><?php echo $shot_desc; ?></p><?php } ?>
                        </div>
                        <div class="SparkleStoreAction">
                            <div class="sparkle-lSPrev"></div>
                            <div class="sparkle-lSNext"></div>
                        </div>
                    </div>
                    
                    <ul class="productarea cS-hidden">
                        <?php 
                            $query = new WP_Query( $product_args );
                            if($query->have_posts()) {  while($query->have_posts()) { $query->the_post();
                        ?>
                            <?php woocommerce_get_template_part( 'content', 'product' ); ?>
                            
                        <?php } } wp_reset_query(); ?>                    
                    </ul>                  
                </div>
            </div>        
            </div>        
        </div><!-- End Product Slider -->

    <?php         
        echo $after_widget;
    }
   
    public function update($new_instance, $old_instance) {
        $instance = $old_instance;
        $widget_fields = $this->widget_fields();
        foreach ($widget_fields as $widget_field) {
            extract($widget_field);
            $instance[$sparklestore_widgets_name] = sparklestore_widgets_updated_field_value($widget_field, $new_instance[$sparklestore_widgets_name]);
        }
        return $instance;
    }

    public function form($instance) {
        $widget_fields = $this->widget_fields();
        foreach ($widget_fields as $widget_field) {
            extract($widget_field);
            $sparklestore_widgets_field_value = !empty($instance[$sparklestore_widgets_name]) ? $instance[$sparklestore_widgets_name] : '';
            sparklestore_widgets_show_widget_field($this, $widget_field, $sparklestore_widgets_field_value);
        }
    }
}