✨ feat: complete language switching functionality and centralized page routing

src/i18n/path.ts

@@ -0,0 +1,60 @@
+import themeConfig from '@/config'
+
+const defaultLocale = themeConfig.global.locale
+const moreLocales = themeConfig.global.moreLocale
+
+export function cleanPath(path: string) {
+  return path.replace(/^\/|\/$/g, '')
+}
+
+export function getLangFromPath(path: string) {
+  const secondaryLang = moreLocales.find(
+    lang =>
+      path.startsWith(`/${lang}/`),
+  )
+  return secondaryLang || defaultLocale
+}
+
+export function getLocalizedPath(path: string, currentLang?: string) {
+  const clean = cleanPath(path)
+  const lang = currentLang || getLangFromPath(path)
+
+  if (clean === '') {
+    return lang === defaultLocale ? '/' : `/${lang}/`
+  }
+
+  return lang === defaultLocale ? `/${clean}/` : `/${lang}/${clean}/`
+}
+
+export function isHomePage(path: string) {
+  const clean = cleanPath(path)
+  return clean === '' || moreLocales.includes(clean)
+}
+
+export function isPostPage(path: string) {
+  const clean = cleanPath(path)
+  return clean.startsWith('posts') || moreLocales.some(lang => clean.startsWith(`${lang}/posts`))
+}
+
+export function isTagPage(path: string) {
+  const clean = cleanPath(path)
+  return clean.startsWith('tags') || moreLocales.some(lang => clean.startsWith(`${lang}/tags`))
+}
+
+export function isAboutPage(path: string) {
+  const clean = cleanPath(path)
+  return clean.startsWith('about') || moreLocales.some(lang => clean.startsWith(`${lang}/about`))
+}
+
+export function getPagePath(path: string) {
+  const currentLang = getLangFromPath(path)
+
+  return {
+    currentLang,
+    isHome: isHomePage(path),
+    isPost: isPostPage(path),
+    isTag: isTagPage(path),
+    isAbout: isAboutPage(path),
+    getLocalizedPath: (targetPath: string) => getLocalizedPath(targetPath, currentLang),
+  }
+}