<?php
/**
 * This class is for elaborating the arguments from widget or shortcode and then return an HTML for display the posts/page result.
 *
 * @package Query_Posts
 * @version 1.0
 * @since   2.0
 */

namespace ItalyStrap\Query;

use \WP_Query;
use ItalyStrap\Excerpt\Excerpt;
use ItalyStrap\Config\Config;

/**
 * Query Class for widget and shortcode
 */
class Posts extends Query {

	/**
	 * Constructor.
	 *
	 * @param WP_Query $query The standard query of WordPress.
	 */
	// function __construct( WP_Query $query ) {

	// 	$this->query = $query;

	// 	global $post;
	// 	$this->post = $post;

	// 	if ( ! isset( self::$sticky_posts ) ) {
	// 		self::$sticky_posts = get_option( 'sticky_posts' );
	// 	}

	// }

	/**
	 * Initialize the repository.
	 *
	 * @uses PHP 5.3
	 *
	 * @return self
	 */
	public static function init( $context = null ) {

		return new self( new WP_Query(), new Excerpt( new Config() ), new Config(), $context );

	}

	/**
	 * Get shortcode attributes.
	 *
	 * @param  array $args The carousel attribute.
	 * @return array Mixed array of shortcode attributes.
	 */
	public function get_attributes( $args ) {

		/**
		 * Define data by given attributes.
		 */
		$args = \ItalyStrap\Core\shortcode_atts_multidimensional_array( require( ITALYSTRAP_PLUGIN_PATH . 'config/posts.php' ), $args, 'query_posts' );

		$args = apply_filters( 'italystrap_query_posts_args', $args );

		return $args;

	}

	/**
	 * Get the query arguments
	 *
	 * @param  string $value [description]
	 * @return string        [description]
	 */
	public function get_query_args( array $args = array() ) {
	
		/**
		 * Get the current post id
		 *
		 * @var int
		 */
		$this->current_post_id = is_object( $this->post ) ? $this->post->ID : '';

		if ( ! empty( $this->args['exclude_current_post'] ) ) {
			if ( is_single() ) {
				$this->posts_to_exclude[] = (int) $this->current_post_id;
			}
		}

		/**
		 * I filtri 'excerpt_more' e 'excerpt_length' sono commentati perché
		 * causavano dei conflitti scoperti inserendo get_the_excerpt in un template
		 * di WooCommerce, fare ulteriori test ma non credo che siano da usare
		 * qui poiché le impostazioni di un widget non dovrebbero sovrascrivere
		 * quelle del tema.
		 * @see Posts::get_query_args();
		 * @see Product::get_query_args();
		 */

		/**
		 * Excerpt more filter
		 *
		 * @var function
		 */
		// $new_excerpt_more = function ( $more ) {
		// 	return '...';
		// };
		// add_filter( 'excerpt_more', $new_excerpt_more );

		// $excerpt_length = $this->args['excerpt_length'];

		/**
		 * Excerpt length filter
		 *
		 * @var functions
		 */
		// if ( $this->args['excerpt_length'] > 0 ) {
		// 	add_filter( 'excerpt_length', function ( $length ) use ( $excerpt_length ) {
		// 		return $excerpt_length;
		// 	} );
		// }

		/**
		 * $class = $this->args['widget_class'];
		 * var_dump($this->args['post_types']);
		 * var_dump(get_users());
		 */

		/**
		 * Arguments for WP_Query
		 *
		 * @var array
		 */
		$query_args = array(
			'posts_per_page'			=> $this->args['posts_number'] + count( $this->posts_to_exclude ),
			'order'						=> $this->args['order'],
			'orderby'					=> $this->args['orderby'],
			'post_type'					=> ( empty( $this->args['post_types'] ) ? 'post' : ( is_array( $this->args['post_types'] ) ? $this->args['post_types'] : explode( ',', $this->args['post_types'] ) ) ),
			'no_found_rows'				=> true,
			'update_post_term_cache'	=> false,
			'update_post_meta_cache'	=> false,
		);

		if ( ! empty( $this->args['most_viewed'] ) ) {
			$query_args['post__in'] = $this->get_posts_ids_by_views( $this->args );
		}

		/**
		 * Display per post/page ID
		 */
		if ( ! empty( $this->args['post_id'] ) ) {

			$query_args['post__in'] = explode( ',', $this->args['post_id'] );

			/**
			 * This delete last comma in case the input is like 1,2,
			 */
			$query_args['post__in'] = array_filter( $query_args['post__in'] );

			/**
			 * Convert array value from string to integer
			 */
			$query_args['post__in'] = array_map( 'absint', $query_args['post__in'] );

			/**
			 * If post_id isset than posts_per_page will be override by the number of post ID.
			 */
			$query_args['posts_per_page'] = count( $query_args['post__in'] );

		}

		/**
		 * Sticky posts.
		 */
		if ( 'only' === $this->args['sticky_post'] ) {

			$query_args['post__in'] = self::$sticky_posts;

		} elseif ( 'hide' === $this->args['sticky_post'] ) {

			$query_args['ignore_sticky_posts'] = true;

		} else {

			$query_args['posts_per_page'] -= count( self::$sticky_posts );

		}

		/**
		 * Show the posts with tags selected
		 */
		if ( ! empty( $this->args['tags'] ) ) {
			$query_args['tag__in'] = $this->args['tags'];
			$query_args['update_post_term_cache'] = true;
		}

		/**
		 * Show related posts by tags
		 * You can also select more tags to filter other than the tags assigned to post.
		 */
		if ( ! empty( $this->args['related_by_tags'] ) ) {

			$tags = wp_get_post_terms( $this->current_post_id );

			if ( $tags ) {
				$count = count( $tags );
				for ( $i = 0; $i < $count; $i++ ) {
					$first_tag[] = $tags[ $i ]->term_id;
				}
				$query_args['tag__in'] = array_merge( $first_tag, (array) $this->args['tags'] );
				$query_args['tag__in'] = array_flip( array_flip( $query_args['tag__in'] ) );
				$query_args['update_post_term_cache'] = true;
			}
		}

		/**
		 * Show the posts with cats selected
		 */
		if ( ! empty( $this->args['cats'] ) ) {
			$query_args['category__in'] = $this->args['cats'];
			$query_args['update_post_term_cache'] = true;
		}

		/**
		 * Show related posts by cats
		 * You can also select more cats to filter other than the cats assigned to post.
		 */
		if ( ! empty( $this->args['related_by_cats'] ) ) {

			$cats = wp_get_post_terms( $this->current_post_id, 'category' );

			if ( $cats ) {
				$count = count( $cats );
				for ( $i = 0; $i < $count; $i++ ) {
					$first_cat[] = $cats[ $i ]->term_id;
				}
				$query_args['category__in'] = array_merge( $first_cat, (array) $this->args['cats'] );
				$query_args['category__in'] = array_flip( array_flip( $query_args['category__in'] ) );
				$query_args['update_post_term_cache'] = true;
			}
		}

		/**
		 * Show posts only from current user.
		 */
		if ( ! empty( $this->args['from_current_user'] ) ) {

			$current_user = wp_get_current_user();

			if ( isset( $current_user->ID ) ) {
				$query_args['author'] = $current_user->ID;
			}
		}

		if ( 'meta_value' === $this->args['orderby'] ) {
			$query_args['meta_key'] = $this->args['meta_key'];
		}

		if ( ! empty( $this->args['offset'] ) ) {
			$query_args['offset'] = absint( $this->args['offset'] );
		}

		$query_args = wp_parse_args( $args, $query_args );

		return apply_filters( "italystrap_{$this->context}_query_arg", $query_args );
	
	}

	/**
	 * Output the query result
	 *
	 * @return string The HTML result
	 */
	public function output( array $query_args = array() ) {

		$this->query->query( $this->get_query_args( $query_args ) );

		ob_start();

		// include $this->get_template_part();
		include \ItalyStrap\Core\get_template( '/templates/content-post.php' );

		wp_reset_postdata();

		$output = ob_get_contents();
		ob_end_clean();

		return $output;

	}

	/**
	 * Get custom fields
	 *
	 * @param  string $value [description]
	 * @return string        [description]
	 */
	public function get_custom_fields( $value = '' ) {
	
		if ( $this->args['custom_fields'] ) :

			$custom_field_name = explode( ',', $this->args['custom_fields'] ); ?>

			<div class="entry-custom-fields">
			<?php
			foreach ( $custom_field_name as $name ) :

				$name = trim( $name );
				$custom_field_values = get_post_meta( $this->query->post->ID, $name );

				if ( $custom_field_values ) :
			?>
					<div class="custom-field custom-field-<?php echo esc_attr( str_replace( '_', '-', ltrim( $name, '_' ) ) ); ?>">
						<?php
						/**
						 * If is not an array echo custom field value
						 */
						if ( ! is_array( $custom_field_values ) ) {

							echo esc_attr( $custom_field_values );

						} else {

							$last_value = end( $custom_field_values );
							foreach ( $custom_field_values as $value ) {

								echo esc_attr( $value );

								if ( $value !== $last_value ) {

									echo ', ';

								}
							}
						}
						?>
					</div>
			<?php endif;
			endforeach; ?>
			</div>
		<?php
		endif;

	}

	/**
	 * Read More Link
	 */
	public function read_more_link() {

		if ( empty( $this->args['show_readmore'] ) ) {
			return;
		}

		$attr = array();
		$link_text = '';

		/**
		 * Compat with php5.4 and 5.3
		 */
		$activate_excerpt_more_mods = $this->config->get( 'activate_excerpt_more_mods' );

		if ( empty( $this->args['use_global_read_more'] ) || empty( $activate_excerpt_more_mods ) ) {
			$attr['class'] = 'more-link';
			$link_text = $this->args['excerpt_readmore'];
		}

		echo $this->excerpt->read_more_link( 'widget_post_read_more', $attr, $link_text );
	}
}