Filter default post & term permalinks (Permalink Manager)

filter_permastructure_post.php

<?php
/**
 * 1A. How to programmatically modify post permalink formats (permastructures)
 *
 * @param string $permastructure	The permastructure string used when default custom permalink is generated.
 * @param WP_Post|WP_Term $post      	Post or term object
 * @return string			The new, filtered permastructure string used when default custom permalink is generated (for new posts or existing ones if "Regenerate/reset" tool is used)
 */
function pm_filter_post_permastructure($permastructure, $post) {
	// Filter only 'Post' permalinks
	if(empty($post->post_type) || $post->post_type !== 'post') {
		return $permastructure;
	}
	
	// A. Post assigned to either 'Category A' or 'Category B' 
	if(has_term(array('Category A', 'Category B'), 'category', $post)) {
		$permastructure = '%category%/%postname%';
	}
	// B. Post assigned to other categories
	else {
		$permastructure = '%year%/%monthnum%/%day%/%postname%';
	}
	
	return $permastructure;
}
add_filter('permalink_manager_filter_permastructure', 'pm_filter_post_permastructure', 10, 2);

filter_permastructure_product.php

<?php
/**
 * 1B. How to programmatically modify product permalink formats (permastructures)
 *
 * @param string $permastructure	The permastructure string used when default custom permalink is generated.
 * @param WP_Post|WP_Term $product      	Post or term object
 * @return string			The new, filtered permastructure string used when default custom permalink is generated (for new products or existing ones if "Regenerate/reset" tool is used)
 */
function pm_filter_product_permastructure($permastructure, $post) {
	// Filter only 'Product' permalinks
	if(empty($post->post_type) || $post->post_type !== 'product' || !function_exists('get_product')) {
		return $permastructure;
	}

	$product = get_product($post->ID);

	// A. Virtual products
	if($product->is_virtual()) {
		$permastructure = 'course/%product%';
	}
	// B. Other products
	else {
		$permastructure = 'store/%product%';
	}

	return $permastructure;
}
add_filter('permalink_manager_filter_permastructure', 'pm_filter_product_permastructure', 10, 2);

filter_permastructure_term.php

<?php
/**
 * 1C. How to programmatically modify term permalink formats (permastructures)
 *
 * @param string $permastructure	The permastructure string used when default custom permalink is generated.
 * @param WP_Post|WP_Term $term      	Post or term object
 * @return string			The new, filtered permastructure string used when default custom permalink is generated (for new terms or existing ones if "Regenerate/reset" tool is used).
 */
function pm_filter_category_permastructure($permastructure, $term) {
	// Filter only 'Category' permalinks
	if(empty($term->taxonomy) || $term->taxonomy !== 'category') {
		return $permastructure;
	}
	
	// Get parent term
	$parent_term = (!empty($term->parent)) ? get_term_by('id', $term->parent, $term->taxonomy) : '';
	
	// Use term ID instead of slug for all subcategories of 'Clothes'
	if(!empty($parent_term->slug) && $parent_term->slug == 'clothes') {
		$permastructure = '%term_id%';
	}
	
	return $permastructure;
}
add_filter('permalink_manager_filter_permastructure', 'pm_filter_category_permastructure', 10, 2);

filter_uris_post.php

<?php
/**
 * 2A. How to programmatically modify post permalinks?
 */
function pm_filter_default_post_uris($default_uri, $native_slug, $post, $slug, $native_uri) {
	// Do not change native permalinks or different post types
	if($native_uri || $post->post_type != 'post') { return $default_uri; }

	// Get the year when the post was published
	$year = date("Y", strtotime($post->post_date));

	// Get post author meta - it can be user_login, user_email, ID or other field:
	// Reference: https://developer.wordpress.org/reference/functions/get_the_author_meta/
	$author = get_the_author_meta('user_login', $post->post_author);

	// 1A. Blog posts (you can use either category name, slug or its ID)
	// Example URL: http://example.com/blog/lorem-ipsum/
	if(in_category('blog', $post)) {
		$default_uri =  "blog/{$slug}";
	}

	// 1B. Press releases
	// Example URL: http://example.com/news-and-resources/press-releases/2016/dolor-sit-amet/
	else if(in_category('press-releases', $post)) {
		$default_uri =  "news-and-resources/press-releases/{$year}/{$slug}";
	}

	// 2. Posts added by John Doe
	// Example URL: http://example.com/interviews/2018/john-doe/etiam-ullamcorper/
	else if($author == 'john-doe') {
		// Get the author full name
		$author_name = sprintf("%s %s", 
			get_the_author_meta('first_name', $post->post_author), 
			get_the_author_meta('last_name', $post->post_author)
		);

		// Sanitize the author name, so it can be safely used inside URI
		$author_safename = sanitize_title($author_name);

		$default_uri =  "interviews/{$year}/{$author_safename}/{$slug}";
	}

	// 3A. Posts published in and after 2017
	// Example URL: http://example.com/news-and-resources/malesuada-ultricies/
	else if(intval($year) >= 2017) {
		$default_uri =  "news-and-resources/{$slug}";
	}

	// 3B. Posts published before 2017
	// Example URL: http://example.com/archive/2016/nulla-imperdiet/
	else {
		$default_uri =  "archive/{$year}/{$slug}";
	}

	return trim($default_uri, "/");
}
add_filter('permalink_manager_filter_default_post_uri', 'pm_filter_default_post_uris', 10, 5);

filter_uris_term.php

<?php
/**
 * 2B. How to programmatically modify term permalinks?
 */
function pm_filter_default_term_uris($default_uri, $native_slug, $term, $slug, $native_uri) {
	// Do not change the native permalinks => Apply the filter only to the custom permalinks
	if($native_uri) { return $default_uri; }

	// Get the parent term
	if(isset($term->parent)) {
		$parent_term = get_term_by('id', $term->parent, $term->taxonomy);
	}
	// Do not filter the default custom permalink if no parent term is set
	else {
		return $default_uri;
	}

	// A. Terms that are children of "shoes" category
	// Example URL: http://example.com/adidas-shoes/
	if($parent_term->slug == 'shoes') {
		$default_uri = "{$slug}-shoes";
	}

	// B. Terms that are children of "jackets" category
	// Example URL: http://example.com/outerwear/jackets/north-face
	else if($parent_term->slug == 'jackets') {
		$default_uri = "outerwear/{$parent_term->slug}/{$slug}";
	}

	return trim($default_uri, "/");
}
add_filter('permalink_manager_filter_default_term_uri', 'pm_filter_default_term_uris', 10, 5);