<?php
/**
 * Page Walker
 *
 * Componentz menu page walker class.
 *
 * @author Componentz <support@componentz.co>
 * @package Componentz
 * @subpackage Componentz Theme
 * @since 1.0.0
 */

namespace Componentz;

// Do not allow direct access.
if( ! defined( 'ABSPATH' ) ) {
    exit;
}

class PageWalker extends \Walker_Page {
    
    /**
	 * Outputs the beginning of the current level in the tree before elements are output.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::start_lvl()
	 *
	 * @param string $output Used to append additional content (passed by reference).
	 * @param int    $depth  Optional. Depth of page. Used for padding. Default 0.
	 * @param array  $args   Optional. Arguments for outputting the next level.
	 *                       Default empty array.
	 */
	public function start_lvl( &$output, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$indent  = str_repeat( $t, $depth );
		$output .= "{$n}{$indent}<ul class='cz-dropdown-menu'>{$n}";
	}
	/**
	 * Outputs the end of the current level in the tree after elements are output.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::end_lvl()
	 *
	 * @param string $output Used to append additional content (passed by reference).
	 * @param int    $depth  Optional. Depth of page. Used for padding. Default 0.
	 * @param array  $args   Optional. Arguments for outputting the end of the current level.
	 *                       Default empty array.
	 */
	public function end_lvl( &$output, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$indent  = str_repeat( $t, $depth );
		$output .= "{$indent}</ul>{$n}";
	}
	/**
	 * Outputs the beginning of the current element in the tree.
	 *
	 * @see Walker::start_el()
	 * @since 2.1.0
	 *
	 * @param string  $output       Used to append additional content. Passed by reference.
	 * @param WP_Post $page         Page data object.
	 * @param int     $depth        Optional. Depth of page. Used for padding. Default 0.
	 * @param array   $args         Optional. Array of arguments. Default empty array.
	 * @param int     $current_page Optional. Page ID. Default 0.
	 */
	public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		if ( $depth ) {
			$indent = str_repeat( $t, $depth );
		} else {
			$indent = '';
		}
		$css_class = array( 'menu-item', 'menu-item-' . $page->ID, 'cz-nav-item' );
		if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
			$css_class[] = 'menu-item-has-children cz-dropdown';
		}
		if ( ! empty( $current_page ) ) {
			$_current_page = get_post( $current_page );
			if ( $_current_page && in_array( $page->ID, $_current_page->ancestors ) ) {
				$css_class[] = 'current_page_ancestor';
			}
			if ( $page->ID == $current_page ) {
				$css_class[] = 'current_page_item';
			} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
				$css_class[] = 'current_page_parent';
			}
		} elseif ( $page->ID == get_option( 'page_for_posts' ) ) {
			$css_class[] = 'current_page_parent';
		}
		/**
		 * Filters the list of CSS classes to include with each page item in the list.
		 *
		 * @since 2.8.0
		 *
		 * @see wp_list_pages()
		 *
		 * @param string[] $css_class    An array of CSS classes to be applied to each list item.
		 * @param WP_Post  $page         Page data object.
		 * @param int      $depth        Depth of page, used for padding.
		 * @param array    $args         An array of arguments.
		 * @param int      $current_page ID of the current page.
		 */
		$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
		$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';
		if ( '' === $page->post_title ) {
			/* translators: %d: ID of a post. */
			$page->post_title = sprintf( esc_html__( '#%d (no title)', 'componentz' ), $page->ID );
		}

		$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
		$args['link_after']  = empty( $args['link_after'] ) ? '' : $args['link_after'];
		$atts                 = array();
		$atts['href']         = esc_url( get_permalink( $page->ID ) );
        $arrow                = is_rtl() ? Componentz()->svg->icon( 'cz-icon-arrow-left' ) : Componentz()->svg->icon( 'cz-icon-arrow-right' );

        if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
            if( $depth < 1 ) {
                $atts['class']      = 'cz-dropdown-toggle cz-nav-link';
                $args['link_after'] = '<a href="#" class="cz-submenu-collapse">'. $arrow .'</a>';
            } else {
                $atts['class']      = 'cz-dropdown-item';
            }
        } else {
            if( $depth < 1 ) {
                $atts['class'] = 'cz-nav-link';
            } else {
                $atts['class'] = 'cz-dropdown-item';
            }
        }

        if( $args['has_children'] ) {
            $args['link_after'] = '<a href="#" class="cz-submenu-collapse">'. $arrow .'</a>';
        }

		$atts['aria-current'] = ( $page->ID == $current_page ) ? 'page' : '';
		/**
		 * Filters the HTML attributes applied to a page menu item's anchor element.
		 *
		 * @since 4.8.0
		 *
		 * @param array $atts {
		 *     The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
		 *
		 *     @type string $href         The href attribute.
		 *     @type string $aria_current The aria-current attribute.
		 * }
		 * @param WP_Post $page         Page data object.
		 * @param int     $depth        Depth of page, used for padding.
		 * @param array   $args         An array of arguments.
		 * @param int     $current_page ID of the current page.
		 */
		$atts = apply_filters( 'page_menu_link_attributes', $atts, $page, $depth, $args, $current_page );
		$attributes = '';
		foreach ( $atts as $attr => $value ) {
			if ( is_scalar( $value ) && '' !== $value && false !== $value ) {
				$value       = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
				$attributes .= ' ' . $attr . '="' . $value . '"';
			}
		}

		$output .= $indent . sprintf(
			'<li%s>%s<a%s>%s</a>%s',
			$css_classes,
			$args['link_before'],
			$attributes,
			/** This filter is documented in wp-includes/post-template.php */
			apply_filters( 'the_title', $page->post_title, $page->ID ),
			$args['link_after']
		);
		if ( ! empty( $args['show_date'] ) ) {
			if ( 'modified' == $args['show_date'] ) {
				$time = $page->post_modified;
			} else {
				$time = $page->post_date;
			}
			$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
			$output     .= ' ' . mysql2date( $date_format, $time );
		}
	}
	/**
	 * Outputs the end of the current element in the tree.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::end_el()
	 *
	 * @param string  $output Used to append additional content. Passed by reference.
	 * @param WP_Post $page   Page data object. Not used.
	 * @param int     $depth  Optional. Depth of page. Default 0 (unused).
	 * @param array   $args   Optional. Array of arguments. Default empty array.
	 */
	public function end_el( &$output, $page, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$output .= "</li>{$n}";
	}
    
}

/* Omit closing PHP tag to avoid "Headers already sent" issues. */
