<?php
/**
 * Product attributes
 *
 * @version     3.1.0
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

global $post;
$current_id = $post->ID; // current product ID
$permalink = get_permalink($current); // current product URL

$terms = get_the_terms( $current, 'product_cat' ); // current product category

foreach ($terms as $term) {
    $product_cat_id = $term->term_id;
    if( get_field( 'variations_from_cat', 'product_cat_'. $term->term_id ) ) {
        $variations_from_cat = get_field( 'variations_from_cat', 'product_cat_'. $term->term_id ); // category product variations
    }
    break;
}

if( get_field( 'use_product_variations' ) ) {
    $use_variations = get_field( 'use_product_variations' ); // product has variations AND do not use category variations
}

if( $use_variations[0]=='Y' ) {

    $variations_ids = array();
    if( get_field( 'product_variations' ) ) {
        $variations = get_field( 'product_variations' );
        if( $variations ) {
            foreach ( $variations as $variation ) {
                $variations_ids[] = $variation->ID;  // get product variation IDs
            }
        }
    }
}


    if($use_variations[0]=='Y' && empty($variations_ids)){ // if product uses variations BUT doesn't have variation IDs linked. We search for items with this product linked.
        $args = array(
            'numberposts'   => -1,
            'post_type'     => 'product',
            'post_status'           => 'publish',
            'meta_query'    => array(
                array(
                    'key'       => 'product_variations',
                    'value'     => $current_id,
                    'compare'   => 'LIKE'
                ),
            )
        );

        $the_query = new WP_Query( $args );
        if( $the_query->have_posts() ) {

            while ( $the_query->have_posts() ){
                $the_query->the_post();

                if( get_field( 'product_variations' ) ) {
                    $variations = get_field( 'product_variations' );
                    if( $variations ) {
                        foreach ( $variations as $variation ) {
                            $variations_ids[] = $variation->ID;  // get linked product variation IDs
                        }
                    }
                }

                $variations_ids[] = get_the_id();
            }
        }
    }

    if( !empty( $variations_ids ) && !in_array($current_id,$variations_ids ) ) {
        $variations_ids[] = $current_id;
        $variations_ids = array_unique($variations_ids);
    }


if( !empty( $variations_ids ) ) {
    $query = array( 'post_type' => 'product', 'post__in' => $variations_ids ) ;
} else if ( $variations_from_cat[0] == 'Y' ) {
    $query = array(
        'tax_query'             => array(
            array(
                'taxonomy'      => 'product_cat',
                'field'         => 'term_id', //This is optional, as it defaults to 'term_id'
                'terms'         => $product_cat_id,
                'operator'      => 'IN' // Possible values are 'IN', 'NOT IN', 'AND'.
            ),
        )
    );

} else { // show just THIS product variations
    $query = array( 'p' => $current_id );
}
$args = array(
    'post_type'             => 'product',
    'post_status'           => 'publish',
    'posts_per_page'        => -1
);
$args = (isset($query) && !empty($query) ) ? array_merge($args, $query) : $args;

$taxonomies = array();
$temp_taxonomies  = get_taxonomies( array(), 'obects' );
$i = 0;



foreach($temp_taxonomies as $key=>$tax) {

    if( strpos($tax->name, 'pa_') === 0 ) {
        $taxonomies[$tax->name]['slug'] = $tax->name;
        $taxonomies[$tax->name]['name'] = $tax->labels->singular_name;
        $i++;
    }
}
unset($temp_taxonomies);

$attr_terms = array();
$current    = array();
foreach($taxonomies as $key=>$taxonomy){
    $attr_terms[$key] = get_terms ( array( 'taxonomy' => $key ) );
    $current[$key]    = get_the_terms ( $current_id, $key );
}

function searchForId($id, $array) {
   foreach ($array as $key => $val) {
       if ($val['term_id'] === $id) {
           return $val['meta_value'];
       }
   }
   return null;
}

$all_products = new WP_Query($args);

$attributes_term_taxonomes = array();
$products_attributes = array();
$i=0;
while ( $all_products->have_posts() ) {
    $all_products->the_post();
    $product_id = get_the_id();

    $products_attributes[$i]['url'] = get_permalink($product_id);
    foreach($taxonomies as $key=>$taxonomy){
        if ( get_the_terms ( $product_id, $key ) ) $products_attributes[$i]['values'][$key] = get_the_terms ( $product_id, $key );
    }

    foreach($products_attributes[$i]['values'] as $value) {
        if( !in_array( $value[0]->taxonomy, $attributes_term_taxonomes ) && $value[0]->taxonomy )
            $attributes_term_taxonomes[] = $value[0]->taxonomy;
    }

    $i++;

}




$taxonomies_view = array();
foreach($taxonomies as $key=>$taxonomy){
    if( in_array( $key, $attributes_term_taxonomes ) )
        $taxonomies_view[$key] = $taxonomy;
}
$taxonomies = $taxonomies_view;
unset($taxonomies_view);

$array_sort = array( 'pa_memory', 'pa_model', 'pa_color' );
foreach($array_sort as $key=>$arr) {
    if( !in_array( $arr, $attributes_term_taxonomes ) ) unset($array_sort[$key]);
}
$taxonomies = array_merge(array_flip($array_sort),$taxonomies);

$all_products_ = new WP_Query($args);
$attributes = array();
$i=0;
while ( $all_products_->have_posts() ) {
    $all_products_->the_post();
    $product_id = get_the_id();
    $attr_value = $attr_key = array();
    foreach($taxonomies as $key=>$tax){
        $attr_value[$key] = get_the_terms( $product_id, $key );
    }
    $keys = array();
    $keys = array_keys($attr_value);
    $key_count = 0;



    foreach($attr_value as $key=>$value){
        if( $value[0]->slug == $current[$key][0]->slug ) {
            $attributes[$keys[$key_count+1]][$i]['name']    = $attr_value[$keys[$key_count+1]][0]->name;
            $attributes[$keys[$key_count+1]][$i]['slug']    = $attr_value[$keys[$key_count+1]][0]->slug;
            $attributes[$keys[$key_count+1]][$i]['url']         = get_permalink($product_id);
            $attributes[$keys[$key_count+1]][$i]['description']     = $attr_value[$keys[$key_count+1]][0]->description;
            $attributes[$keys[$key_count+1]][$i]['order']   = ($attr_value[$keys[$key_count+1]][0]->meta_value) ? $attr_value[$keys[$key_count+1]][0]->meta_value : 0;
            $attributes[$keys[$key_count+1]][$i]['id']      = $attr_value[$keys[$key_count+1]][0]->term_id;
            if( $current_id == $product_id )
                $attributes[$keys[$key_count+1]][$i]['current'] = true;
        }
        if( $attr_value[$keys[$key_count+1]][0]->slug == $current[$keys[$key_count+1]][0]->slug ) {
            $attributes[$key][$i]['name']       = $value[0]->name;
            $attributes[$key][$i]['slug']   = $value[0]->slug;
            $attributes[$key][$i]['description']    = $value[0]->description;
            $attributes[$key][$i]['id']         = $value[0]->term_id;
            $attributes[$key][$i]['order']  = ($value[0]->meta_value) ? $value[0]->meta_value : 0;
            $attributes[$key][$i]['url']    = get_permalink($product_id);
            if( $current_id == $product_id )
                $attributes[$key][$i]['current'] = true;

        }
        break;
    }
    $i++;
}

$array_sort = array( 'pa_memory', 'pa_model', 'pa_color' );

foreach($array_sort as $key=>$arr){
    if(!in_array($arr, array_keys($taxonomies))) unset($array_sort[$key]);
}

$attributes = array_merge(array_flip($array_sort),$attributes);

function cmp($a, $b) {
    if ($a['order'] == $b['order']) {
        return 0;
    }
    return ($a['order'] < $b['order']) ? -1 : 1;
}

foreach($attributes as $key=>$attribute){
    uasort($attribute, 'cmp');
    $attributes[$key] = $attribute;
}

?>

<?php
foreach($taxonomies as $key => $attribute){
    if($key == 'pa_color') {?>
        <div id="product-attribute-color" class="catalog-filter-box">
            <ul class="list-unstyled list-inline m-0">
                <li class="list-inline-item"><?php echo $attribute['name']; ?>:</li>
    <?php foreach($attributes[$key] as $value) {
        if($permalink == $value['url']){?>
            <li class="list-inline-item"><div title="<?php echo $value['name']; ?>"<?php echo ($value['current']===true) ? ' class="active"' : ''; ?>><span<?php echo ($value['description']) ? ' style="background-color:'. $value['description'] .'"' : ''; ?> class="color-box <?php echo $value['slug']; ?>"><?php echo $value['name']; ?></span></div></li>
        <?php } else {?>
            <li class="list-inline-item"><a title="<?php echo $value['name']; ?>" href="<?php echo $value['url']; ?>"<?php echo ($value['current']===true) ? ' class="active"' : ''; ?>><span<?php echo ($value['description']) ? ' style="background-color:'. $value['description'] .'"' : ''; ?> class="color-box <?php echo $value['slug']; ?>"><?php echo $value['name']; ?></span></a></li>
    <?php } } ?>
            </ul>
        </div>
    <?php
    } else {?>
        <div id="product-attribute-memory" class="product-attributes-box">
            <ul class="list-unstyled list-inline m-0">
                <li class="list-inline-item"><strong><?php echo $attribute['name']; ?>:</strong></li>
    <?php foreach($attributes[$key] as $value) {
        if($permalink == $value['url']){?>
            <li class="list-inline-item"><div<?php echo ($value['current']===true) ? ' class="active"' : ''; ?>><?php echo $value['name']; ?></div></li>
        <?php } else {?>
            <li class="list-inline-item"><a href="<?php echo $value['url']; ?>"<?php echo ($value['current']===true) ? ' class="active"' : ''; ?>><?php echo $value['name']; ?></a></li>
    <?php } } ?>
            </ul>
        </div>
    <?php
    }
}


wp_reset_postdata();
?>