WordPress breadcrumb template

breadcrumb.php

<?php
/**
 * Breadcrumb PluginComponent template.
 *
 * @TODO: this is an incredibly hackish template and should likely be killed with fire, rebuilt.
 * @TODO: all breadcrumbs involving date and time functions need to have a configurable format
 * @TODO: support for internationalization
 *
 * @var string $containerElement
 * @var string $containerClass
 * @var string $containerId
 * @var string $homeUri
 * @var string $homeText
 * @var string $beforeHome
 * @var string $afterHome
 * @var string $delimiter
 * @var string $crumbsWrapperElement
 * @var string $crumbsWrapperClass
 * @var string $crumbsWrapperId
 * @var string $crumbBefore
 * @var string $crumbAfter
 * @var string $crumbElement        //@TODO: implement $crumbElement so list markup can be constructed
 * @var bool $showPageNumber
 * @var array[ string ] $text
 *          ['searchResults']
 *          ['authorArchive']
 *          ['tagArchive']
 *          ['categoryArchive']
 *          ['pagination']
 *          ['404']
 */

echo( '<' . $containerElement );
if( isset( $containerClass ) )
	echo ( ' class="' . $containerClass . '"');
echo('>');

/** @var WP_POST $post */
global $post;
$currentAnchor = isset( $currentClass ) && ! empty( $currentClass ) ? '<a href="#" class="' . $currentClass . '">' : '';

echo( '<a href="' . $homeUri . '">' . $beforeHome . $homeText . $afterHome . '</a>' );

if( ! is_home() && ! is_front_page() ) {
    echo( $delimiter );

    if (is_category()) {
        /** @var WP_Query $wp_query */
        global $wp_query;

        $category = $wp_query->get_queried_object();
        $thisCat = get_category( $category->term_id );
        $parentCat = get_category( $thisCat->parent );
        $ancestorCatString = $thisCat->parent !== 0 ? $thisCat->get_category_parents( $parentCat, TRUE, $delimiter ) : ''; //@TODO: error handling - get_cat_parents can return WP_Error

        echo($ancestorCatString . $currentAnchor . str_replace( '{categoryTitle}', single_cat_title(), $text['categoryArchive']) . '</a>' );
    } elseif (is_day()) {
        $year = get_the_time('Y');

        echo('<a href="' . get_year_link($year) . '">' . $year . '</a>' . $delimiter );
        echo('<a href="' . get_month_link($year, get_the_time('m')) . '">' . get_the_time('F') . '</a>' . $delimiter );
        echo($currentAnchor . get_the_time('d') . '</a>');
    } elseif (is_month()) {
        $year = get_the_time('Y');

        echo('<a href="' . get_year_link($year) . '">' . $year . '</a>' . $delimiter );
        echo($currentAnchor . get_the_time('F') . '</a>');
    } elseif (is_year()) {
        echo($currentAnchor . get_the_time('Y') . '</a>');
    } elseif (is_single()) {
        $cat = get_the_category()[0];
        $ancestorCatString = get_category_parents( $cat, TRUE, $delimiter );

        if (!is_string($ancestorCatString))
            $ancestorCatString = ''; //@TODO: Ignorance is bliss, but error handling is better...

        echo( $ancestorCatString . $currentAnchor . the_title() . '</a>' );
    } elseif (is_page()) {
        if ($post->post_parent) {
            $breadcrumbs = array();
            $parent_id = $post->post_parent;

            while ($parent_id) {
                $page = get_post($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $parent_id = $page->post_parent;
            }

            $breadcrumbs = array_reverse($breadcrumbs);
            foreach ($breadcrumbs as $crumb)
                echo $crumb . $delimiter;
        }

        echo($currentAnchor . the_title() . '</a>');
    } elseif (is_search()) {
        echo($currentAnchor . str_replace('{searchQuery}', get_search_query(), $text['searchResults']) . '</a>');
    } elseif (is_tag()) {
        echo($currentAnchor . str_replace('{tagTitle}', single_tag_title(), $text['tagArchive']) . '</a>');
    } elseif (is_author()) {
        global $author;
        //@TODO: abstract templatable string handling into component... Potentially PluginComponent class itelf
        /** @var WP_User $userdata */
        $userdata = get_userdata($author);
        $textTags = array(
            '{displayName}' => $userdata->display_name,
            '{firstName}' => $userdata->user_firstname,
            '{lastName}' => $userdata->user_lastname,
            '{name}' => $userdata->user_firstname . ' ' . $userdata->user_lastname,
            '{url}' => $userdata->user_url,
            '{email}' => $userdata->user_email,
            '{nickname}' => $userdata->nickname,
            '{description}' => $userdata->description
        );
        echo($currentAnchor . str_replace(array_keys($textTags), $text['authorArchive'], array_values($textTags)) . '</a>');
    } elseif (is_404()) {
        echo($currentAnchor . $text['404'] . '</a>');
    }

    if ($showPageNumber && get_query_var('paged'))
        echo(str_replace('{pageNumber}', get_query_var('paged'), $text['paged']));

    echo '</' . $containerElement . '>';

}