<?php

/**
 * Functions which enhance the theme by hooking into WordPress
 *
 * @package charite
 *
 * @since 1.0.0
 *
 */

if (!function_exists('charite_breadcrumb')) {
	function charite_breadcrumb()
	{

		// Set variables for later use
		$home_link        = home_url('  ');
		$home_text        = esc_html__('Home', 'charite');
		$link_before      = '<li typeof="v:Breadcrumb">';
		$link_after       = '</li>';
		$link_attr        = ' rel="v:url" property="v:title"';
		$link             = $link_before . '<a' . $link_attr . ' href="%1$s">%2$s</a>' . $link_after;
		$delimiter        = ' ';              // Delimiter between crumbs
		$before           = '<li class="current">'; // Tag before the current crumb
		$after            = '</li>';                // Tag after the current crumb
		$page_addon       = '';                       // Adds the page number if the query is paged
		$breadcrumb_trail = '';
		$category_links   = '';
		$top_title        = '';

		/**
		 * Set our own $wp_the_query variable. Do not use the global variable version due to
		 * reliability
		 */
		$wp_the_query   = $GLOBALS['wp_the_query'];
		$queried_object = $wp_the_query->get_queried_object();

		// Handle single post requests which includes single pages, posts and attatchments
		if (is_singular()) {
			/**
			 * Set our own $post variable. Do not use the global variable version due to
			 * reliability. We will set $post_object variable to $GLOBALS['wp_the_query']
			 */
			$post_object = sanitize_post($queried_object);

			// Set variables
			$title          = $post_object->post_title;
			$parent         = $post_object->post_parent;
			$post_type      = $post_object->post_type;
			$post_id        = $post_object->ID;
			$post_link      = $before . $title . $after;
			$parent_string  = '';
			$post_type_link = '';


			if ('post' === $post_type) {
				// Get the post categories
				$categories = get_the_category($post_id);
				if ($categories) {
					// Lets grab the first category
					$category = $categories[0];

					$category_links = get_category_parents($category, true, $delimiter);
					$category_links = str_replace('<a', $link_before . '<a' . $link_attr, $category_links);
					$category_links = str_replace('</a>', '</a>' . $link_after, $category_links);
				}
			}

			if (!in_array($post_type, ['post', 'page', 'attachment'])) {
				$post_type_object = get_post_type_object($post_type);
				$archive_link     = esc_url(get_post_type_archive_link($post_type));

				$post_type_link = sprintf($link, $archive_link, $post_type_object->labels->singular_name);
			}

			// Get post parents if $parent !== 0
			if (0 !== $parent) {
				$parent_links = [];
				while ($parent) {
					$post_parent = get_post($parent);

					$parent_links[] = sprintf($link, esc_url(get_permalink($post_parent->ID)), get_the_title($post_parent->ID));

					$parent = $post_parent->post_parent;
				}

				$parent_links = array_reverse($parent_links);

				$parent_string = implode($delimiter, $parent_links);
			}

			// Lets build the breadcrumb trail
			if ($parent_string) {
				$breadcrumb_trail = $parent_string . $delimiter . $post_link;
			} else {
				$breadcrumb_trail = $post_link;
			}

			if ($post_type_link) {
				$breadcrumb_trail = $post_type_link . $delimiter . $breadcrumb_trail;
			}

			if ($category_links) {
				$breadcrumb_trail = $category_links . $breadcrumb_trail;
			}
		}

		// Handle archives which includes category-, tag-, taxonomy-, date-, custom post type archives and author archives
		if (is_archive()) {
			if (
				is_category()
				|| is_tag()
				|| is_tax()
			) {
				// Set the variables for this section
				$term_object        = get_term($queried_object);
				$taxonomy           = $term_object->taxonomy;
				$term_id            = $term_object->term_id;
				$term_name          = $term_object->name;
				$term_parent        = $term_object->parent;
				$taxonomy_object    = get_taxonomy($taxonomy);
				$current_term_link  = $before . $taxonomy_object->labels->singular_name . ': ' . $term_name . $after;
				$parent_term_string = '';

				if (0 !== $term_parent) {
					// Get all the current term ancestors
					$parent_term_links = [];
					while ($term_parent) {
						$term = get_term($term_parent, $taxonomy);

						$parent_term_links[] = sprintf($link, esc_url(get_term_link($term)), $term->name);

						$term_parent = $term->parent;
					}

					$parent_term_links  = array_reverse($parent_term_links);
					$parent_term_string = implode($delimiter, $parent_term_links);
				}

				if ($parent_term_string) {
					$breadcrumb_trail = $parent_term_string . $delimiter . $current_term_link;
				} else {
					$breadcrumb_trail = $current_term_link;
				}
			} elseif (is_author()) {

				$breadcrumb_trail = $before . esc_html__('Author archive for: ', 'charite') . $queried_object->data->display_name . $after;
			} elseif (is_date()) {
				// Set default variables
				$get_query_var = get_query_var('m');
				$year          = $wp_the_query->query_vars['year'];
				$monthnum      = $wp_the_query->query_vars['monthnum'];
				$day           = $wp_the_query->query_vars['day'];
				if (0 == $year || 0 == $monthnum) {
					$year     = substr($get_query_var, 0, 4);
					$monthnum = substr($get_query_var, 4, 2);
				}

				// Get the month name if $monthnum has a value
				if ($monthnum) {
					$date_time  = DateTime::createFromFormat('!m', $monthnum);
					$month_name = $date_time->format('F');
				}

				if (is_year()) {
					$breadcrumb_trail = $before . $year . $after;
				} elseif (is_month()) {
					$year_link = sprintf($link, esc_url(get_year_link($year)), $year);

					$breadcrumb_trail = $year_link . $delimiter . $before . $month_name . $after;
				} elseif (is_day()) {

					$year_link  = sprintf($link, esc_url(get_year_link($year)), $year);
					$month_link = sprintf($link, esc_url(get_month_link($year, $monthnum)), $month_name);

					$breadcrumb_trail = $year_link . $delimiter . $month_link . $delimiter . $before . $day . $after;
				}
			} elseif (is_post_type_archive()) {

				$post_type        = $wp_the_query->query_vars['post_type'];
				$post_type_object = get_post_type_object($post_type);

				$breadcrumb_trail = $before . $post_type_object->labels->singular_name . $after;
			}
		}

		// Handle the search page
		if (is_search()) {
			$breadcrumb_trail = $before . esc_html__('Searched for: ', 'charite') . get_search_query() . $after;

			$top_title = esc_html__('Search Page', 'charite');
		}

		// Handle 404's
		if (is_404()) {
			$breadcrumb_trail = $before . esc_html__('Error 404', 'charite') . $after;

			$top_title = esc_html__('Page Not Found', 'charite');
		}

		// Handle paged pages
		if (is_paged()) {
			$current_page = get_query_var('paged') ? get_query_var('paged') : get_query_var('page');
			$page_addon   = $before . sprintf(esc_html__(' ( Page %s )', 'charite'), number_format_i18n($current_page)) . $after; // phpcs:ignore WordPress.WP.I18n.MissingTranslatorsComment
		}

		if (is_single() || is_page()) {
			$top_title = get_the_title();
		}

		if (is_archive()) {
			$top_title = esc_html__('Archive', 'charite');
		}

		if (is_home()) {
			$top_title  = esc_html__('Blog', 'charite');
			$page_addon = esc_html__('Blog', 'charite');
		}

		if (is_page() && charite_meta_query('charite_page_meta', 'charite_breadcrumb') != 'hide' || !is_page()) {

			if (charite_get_option('breadcrumb_enable', 1) == 1) {
				$breadcrumb_output_link = '';

				$breadcrumb_output_link .= '<div class="page-banner-area bgs-cover overlay text-white py-165 rpy-125">
					<div class="banner-bg-img"></div>
					<div class="container">
						<div class="row justify-content-center">
							<div class="col-12">
								<div class="breadcrumb-inner text-center">
									<h2 class="page-title">' . esc_html($top_title) . '</h2>';
				if (
					is_home() || is_front_page()
				) {

					if (is_home() && !is_front_page()) {
						$breadcrumb_output_link .= '<ul class="page-list">';
						$breadcrumb_output_link .= '<li><a href="' . $home_link . '">' . $home_text . '</a></li>';
						$breadcrumb_output_link .= '<li> ' . get_the_title(get_option('page_for_posts')) . '</li>';
						$breadcrumb_output_link .= ' </ul>';
					}
				} else {
					$breadcrumb_output_link .= '<ul class="page-list">';
					$breadcrumb_output_link .= '<li><a href="' . $home_link . '" rel="v:url" property="v:title">' . $home_text . '</a></li>';
					$breadcrumb_output_link .= $delimiter;
					$breadcrumb_output_link .= $breadcrumb_trail;
					$breadcrumb_output_link .= $page_addon;
					$breadcrumb_output_link .= ' </ul>';
				}
				$breadcrumb_output_link .= '
								</div>
							</div>
						</div>
					</div>
				</div>';
				echo wp_kses_post($breadcrumb_output_link);
			} //endif
		} //endif
	}
}