Enable localization based on browser settings, add language selector (#925)

* Enable localization based on browser settings, add language selector

* Add dialog for language selection

frontend/components/global/LanguageDialog.vue

@@ -0,0 +1,194 @@
+<template>
+<BaseDialog v-model="dialog" :icon="$globals.icons.translate" :title="$t('language-dialog.choose-language')">
+  <v-card-text>
+    {{ $t('language-dialog.select-description') }}
+    <v-select
+      v-model="locale"
+      :items="locales"
+      item-text="name"
+      menu-props="auto"
+      outlined
+    ></v-select>
+    <i18n path="language-dialog.how-to-contribute-description">
+      <template #read-the-docs-link>
+        <a href="https://docs.mealie.io/contributors/translating/" target="_blank">{{ $t("language-dialog.read-the-docs") }}</a>
+      </template>
+    </i18n>
+  </v-card-text>
+</BaseDialog>
+</template>
+
+<script lang="ts">
+import { computed, defineComponent, useContext } from "@nuxtjs/composition-api";
+import type { LocaleObject } from "@nuxtjs/i18n";
+
+export default defineComponent({
+  props: {
+    value: {
+      type: Boolean,
+      default: false
+    }
+  },
+  setup(props, context) {
+    const dialog = computed<boolean>({
+      get() {
+        return props.value;
+      },
+      set(val) {
+        context.emit("input", val);
+      },
+    });
+
+    const { i18n } = useContext();
+
+    const locales = [
+      {
+        name: "American English",
+        value: "en-US",
+      },
+      {
+        name: "British English",
+        value: "en-GB",
+      },
+      {
+        name: "Afrikaans (Afrikaans)",
+        value: "af-ZA",
+      },
+      {
+        name: "العربية (Arabic)",
+        value: "ar-SA",
+      },
+      {
+        name: "Català (Catalan)",
+        value: "ca-ES",
+      },
+      {
+        name: "Čeština (Czech)",
+        value: "cs-CZ",
+      },
+      {
+        name: "Dansk (Danish)",
+        value: "da-DK",
+      },
+      {
+        name: "Deutsch (German)",
+        value: "de-DE",
+      },
+      {
+        name: "Ελληνικά (Greek)",
+        value: "el-GR",
+      },
+      {
+        name: "Español (Spanish)",
+        value: "es-ES",
+      },
+      {
+        name: "Suomi (Finnish)",
+        value: "fi-FI",
+      },
+      {
+        name: "Français (French)",
+        value: "fr-FR",
+      },
+      {
+        name: "עברית (Hebrew)",
+        value: "he-IL",
+      },
+      {
+        name: "Magyar (Hungarian)",
+        value: "hu-HU",
+      },
+      {
+        name: "Italiano (Italian)",
+        value: "it-IT",
+      },
+      {
+        name: "日本語 (Japanese)",
+        value: "ja-JP",
+      },
+      {
+        name: "한국어 (Korean)",
+        value: "ko-KR",
+      },
+      {
+        name: "Norsk (Norwegian)",
+        value: "no-NO",
+      },
+      {
+        name: "Nederlands (Dutch)",
+        value: "nl-NL",
+      },
+      {
+        name: "Polski (Polish)",
+        value: "pl-PL",
+      },
+      {
+        name: "Português do Brasil (Brazilian Portugese)",
+        value: "pt-BR",
+      },
+      {
+        name: "Português (Portugese)",
+        value: "pt-PT",
+      },
+      {
+        name: "Română (Romanian)",
+        value: "ro-RO",
+      },
+      {
+        name: "Pусский (Russian)",
+        value: "ru-RU",
+      },
+      {
+        name: "српски (Serbian)",
+        value: "sr-SP",
+      },
+      {
+        name: "Svenska (Swedish)",
+        value: "sv-SE",
+      },
+      {
+        name: "Türkçe (Turkish)",
+        value: "tr-TR",
+      },
+      {
+        name: "Українська (Ukrainian)",
+        value: "uk-UA",
+      },
+      {
+        name: "Tiếng Việt (Vietnamese)",
+        value: "vi-VN",
+      },
+      {
+        name: "简体中文 (Chinese simplified)",
+        value: "zh-CN",
+      },
+      {
+        name: "繁體中文 (Chinese traditional)",
+        value: "zh-TW",
+      },
+    ].filter(locale => (i18n.locales as LocaleObject[]).map(i18nLocale => i18nLocale.code).includes(locale.value));
+
+    const locale = computed<string>({
+      get() {
+        return i18n.locale;
+      },
+      set(value) {
+        i18n.setLocale(value);
+        // Reload the page to update the language - not all strings are reactive
+        window.location.reload();
+      }
+    });
+
+    return {
+      dialog,
+      i18n,
+      locales,
+      locale,
+    };
+  }
+});
+</script>
+
+<style scoped>
+
+</style>

frontend/lang/messages/en-US.json

@@ -415,7 +415,8 @@
     "search": "Search",
     "site-settings": "Site Settings",
     "tags": "Tags",
-    "toolbox": "Toolbox"
+    "toolbox": "Toolbox",
+    "language": "Language"
   },
   "signup": {
     "error-signing-up": "Error Signing Up",
@@ -494,5 +495,11 @@
     "webhooks-enabled": "Webhooks Enabled",
     "you-are-not-allowed-to-create-a-user": "You are not allowed to create a user",
     "you-are-not-allowed-to-delete-this-user": "You are not allowed to delete this user"
+  },
+  "language-dialog": {
+    "choose-language": "Choose language",
+    "select-description": "Choose the language for the Mealie UI. The setting only applies to you, not other users.",
+    "how-to-contribute-description": "Is something not translated yet, mistranslated, or your language missing from the list? {read-the-docs-link} on how to contribute!",
+    "read-the-docs": "Read the docs"
   }
 }

frontend/layouts/default.vue

@@ -36,6 +36,15 @@
         </v-list>
       </v-menu>
       <template #bottom>
+        <v-list-item @click.stop="languageDialog = true">
+          <v-list-item-icon>
+            <v-icon>{{ $globals.icons.translate }}</v-icon>
+          </v-list-item-icon>
+          <v-list-item-content>
+            <v-list-item-title>{{ $t('sidebar.language') }}</v-list-item-title>
+            <LanguageDialog v-model="languageDialog" />
+          </v-list-item-content>
+        </v-list-item>
         <v-list-item @click="toggleDark">
           <v-list-item-icon>
             <v-icon>
@@ -64,12 +73,13 @@
 import { computed, defineComponent, onMounted, ref, useContext } from "@nuxtjs/composition-api";
 import AppHeader from "@/components/Layout/AppHeader.vue";
 import AppSidebar from "@/components/Layout/AppSidebar.vue";
+import LanguageDialog from "~/components/global/LanguageDialog.vue";
 import TheSnackbar from "@/components/Layout/TheSnackbar.vue";
 import { useCookbooks } from "~/composables/use-group-cookbooks";
 import { useToggleDarkMode } from "~/composables/use-utils";
 
 export default defineComponent({
-  components: { AppHeader, AppSidebar, TheSnackbar },
+  components: { AppHeader, AppSidebar, LanguageDialog, TheSnackbar },
   middleware: "auth",
   setup() {
     const { cookbooks } = useCookbooks();
@@ -79,6 +89,8 @@ export default defineComponent({
 
     const toggleDark = useToggleDarkMode();
 
+    const languageDialog = ref<boolean>(false);
+
     const sidebar = ref<boolean | null>(null);
 
     onMounted(() => {
@@ -95,7 +107,7 @@ export default defineComponent({
         };
       });
     });
-    return { cookbookLinks, isAdmin, toggleDark, sidebar };
+    return { cookbookLinks, isAdmin, languageDialog, toggleDark, sidebar };
   },
   data() {
     return {

frontend/nuxt.config.js

@@ -170,7 +170,12 @@ export default {
       // END: MESSAGE_LOCALES
     ],
     lazy: true,
+    strategy: "no_prefix",
     langDir: "lang/messages",
+    detectBrowserLanguage: {
+      useCookie: true,
+      alwaysRedirect: true,
+    },
     defaultLocale: "en-US",
     vueI18n: {
       dateTimeFormats: {
@@ -208,8 +213,8 @@ export default {
         "vi-VN": require("./lang/dateTimeFormats/vi-VN.json"),
         // END: DATE_LOCALES
       },
+      fallbackLocale: "en-US",
     },
-    fallbackLocale: "es",
   },
 
   // Axios module configuration: https://go.nuxtjs.dev/config-axios

frontend/types/components.d.ts

@@ -15,6 +15,7 @@
  import DevDumpJson from "@/components/global/DevDumpJson.vue";
  import InputQuantity from "@/components/global/InputQuantity.vue";
  import ToggleState from "@/components/global/ToggleState.vue";
+ import LanguageDialog from "~/components/global/LanguageDialog.vue";
  import AppButtonCopy from "@/components/global/AppButtonCopy.vue";
  import CrudTable from "@/components/global/CrudTable.vue";
  import InputColor from "@/components/global/InputColor.vue";
@@ -49,6 +50,7 @@ declare module "vue" {
      DevDumpJson: typeof DevDumpJson;
      InputQuantity: typeof InputQuantity;
      ToggleState: typeof ToggleState;
+     LanguageDialog: typeof LanguageDialog;
      AppButtonCopy: typeof AppButtonCopy;
      CrudTable: typeof CrudTable;
      InputColor: typeof InputColor;