Documentation link in task application.

conversejs/custom/shared/lib/help.js

@@ -0,0 +1,44 @@
+import { __ } from 'i18n'
+
+/**
+ * Returns the current language code.
+ * This is the code that correspond to the path for localized documentation
+ * (in other words: 'fr', not 'fr-FR').
+ * This is the 'ConverseJS version' of the same function in `client/utils/help`.
+ * @returns language code
+ */
+function getLangCode () {
+  // See the build-languages.js script for more information about this trick.
+  const s = __('_livechat_language')
+  if (s === '_livechat_language') {
+    return 'en'
+  }
+  return s
+}
+
+function helpUrl (options) {
+  let url = 'https://livingston.frama.io/peertube-plugin-livechat/'
+  if (options.lang && /^[a-zA-Z_-]+$/.test(options.lang)) {
+    url = url + options.lang + '/'
+  }
+  if (options.page && /^[\w/-]+$/.test(options.page)) {
+    url = url + options.page + '/'
+  }
+  return url
+}
+
+/**
+ * Returns the url of the documentation, in the current user language.
+ * This is the 'ConverseJS version' of the same function in `client/utils/help`.
+*/
+function converseLocalizedHelpUrl (helpUrlOptions) {
+  const lang = getLangCode().toLowerCase() // lowercase is needed for zh-hans for example
+  if (lang === 'en') {
+    return helpUrl(helpUrlOptions)
+  }
+  return helpUrl(Object.assign({}, helpUrlOptions, { lang }))
+}
+
+export {
+  converseLocalizedHelpUrl
+}