Vladimir Bryzgalov
95 lines
3.0 KiB
PHP
95 lines
3.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace WPMultiCity;
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final class LinkFilter
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{
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public static function register(): void
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{
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\add_filter('home_url', [self::class, 'filter_home_url'], 9999, 4);
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\add_filter('post_link', [self::class, 'filter_post_link'], 10, 3);
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\add_filter('acf/load_value', [self::class, 'filter_acf_load_value'], 9999, 3);
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}
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public static function filter_home_url(string $url, string $path = '', $orig_scheme = null, $blog_id = null): string
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{
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return self::add_town_prefix($url);
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}
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public static function filter_post_link(string $permalink, $post = null, bool $leavename = false): string
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{
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return self::add_town_prefix($permalink);
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}
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public static function filter_acf_load_value($value, $post_id = null, $field = null)
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{
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if (!is_string($value)) {
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return $value;
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}
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return self::add_town_prefix($value);
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}
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public static function add_town_prefix(string $url): string
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{
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if (Helpers::is_bypassed()) {
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return $url;
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}
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$town = Helpers::current_town();
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if ($town === null) {
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return $url;
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}
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$main = Helpers::main_town_slug();
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if ($main !== null && $town === $main) {
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return $url;
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}
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if (!Helpers::is_routable_path($url)) {
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return $url;
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}
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$parsed = parse_url($url);
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if ($parsed === false) {
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return $url;
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}
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// Path-only URL: no scheme and no host.
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if (empty($parsed['scheme']) && empty($parsed['host'])) {
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$path = $parsed['path'] ?? '';
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if (self::path_already_has_town_prefix($path, $town)) {
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return $url;
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}
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$query = isset($parsed['query']) ? '?' . $parsed['query'] : '';
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$fragment = isset($parsed['fragment']) ? '#' . $parsed['fragment'] : '';
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return '/' . $town . $path . $query . $fragment;
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}
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// Full URL with scheme: only http(s) on our own host.
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$scheme = strtolower((string) ($parsed['scheme'] ?? ''));
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if ($scheme !== 'http' && $scheme !== 'https') {
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return $url;
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}
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$host = $parsed['host'] ?? '';
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$current_host = $_SERVER['HTTP_HOST'] ?? '';
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if ($host === '' || $host !== $current_host) {
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return $url;
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}
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$path = $parsed['path'] ?? '/';
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if (self::path_already_has_town_prefix($path, $town)) {
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return $url;
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}
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$query = isset($parsed['query']) ? '?' . $parsed['query'] : '';
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$fragment = isset($parsed['fragment']) ? '#' . $parsed['fragment'] : '';
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return $scheme . '://' . $host . '/' . $town . $path . $query . $fragment;
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}
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private static function path_already_has_town_prefix(string $path, string $town): bool
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{
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return $path === '/' . $town
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|| str_starts_with($path, '/' . $town . '/');
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}
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}
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