c223873e96
Path-segment locales make each language crawlable with self canonical and hreflang, while identity.locale persists an explicit choice without client storage or cookie banners. Signed-off-by: Émile Ré <emile@probo.com>
117 lines
3.7 KiB
Go
117 lines
3.7 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package complianceportal_v1
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import (
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"net/http"
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"strings"
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)
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// Short locale tags used in compliance-portal URL paths. Keep in sync with the
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// frontend URL_LOCALES list and iam.supportedIdentityLocales.
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var compliancePortalLocales = []string{
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"en", "fr", "de", "es", "id", "it", "ja", "ko", "pl", "pt", "tr", "uk", "zh",
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}
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const defaultCompliancePortalLocale = "en"
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// SEOFromRequest derives html lang, a self-referencing canonical URL, and
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// hreflang alternates (including x-default → English) for the SPA shell.
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func SEOFromRequest(r *http.Request, pageBaseURL string) (htmlLang, canonical string, hreflang []HreflangLink) {
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appPath := complianceAppPath(r.URL.Path)
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locale, rest := splitLocaleFromAppPath(appPath)
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htmlLang = locale
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canonical = localizedPageURL(pageBaseURL, locale, rest)
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hreflang = make([]HreflangLink, 0, len(compliancePortalLocales)+1)
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for _, loc := range compliancePortalLocales {
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hreflang = append(hreflang, HreflangLink{
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Lang: loc,
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Href: localizedPageURL(pageBaseURL, loc, rest),
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})
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}
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hreflang = append(hreflang, HreflangLink{
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Lang: "x-default",
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Href: localizedPageURL(pageBaseURL, defaultCompliancePortalLocale, rest),
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})
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return htmlLang, canonical, hreflang
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}
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// complianceAppPath returns the path relative to the portal root: under
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// /trust/:slug it strips that prefix; on a custom domain it returns the path as-is.
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func complianceAppPath(pathname string) string {
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trimmed := strings.TrimPrefix(pathname, "/")
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if strings.HasPrefix(trimmed, "trust/") {
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parts := strings.SplitN(trimmed, "/", 3)
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if len(parts) < 2 {
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return "/"
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}
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if len(parts) == 2 {
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return "/"
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}
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return "/" + parts[2]
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}
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if pathname == "" {
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return "/"
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}
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return pathname
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}
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func splitLocaleFromAppPath(appPath string) (locale, rest string) {
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segments := strings.Split(strings.Trim(appPath, "/"), "/")
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if len(segments) == 0 || segments[0] == "" {
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return defaultCompliancePortalLocale, "/"
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}
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if isCompliancePortalLocale(segments[0]) {
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locale = segments[0]
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if len(segments) == 1 {
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return locale, "/"
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}
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return locale, "/" + strings.Join(segments[1:], "/")
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}
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// Unprefixed legacy path — treat content path as-is; default lang for tags.
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return defaultCompliancePortalLocale, appPath
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}
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func isCompliancePortalLocale(value string) bool {
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for _, locale := range compliancePortalLocales {
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if locale == value {
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return true
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}
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}
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return false
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}
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func localizedPageURL(pageBaseURL, locale, rest string) string {
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base := strings.TrimRight(pageBaseURL, "/")
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if rest == "/" || rest == "" {
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return base + "/" + locale
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}
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if !strings.HasPrefix(rest, "/") {
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rest = "/" + rest
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}
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return base + "/" + locale + rest
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}
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