From eb85ab4e1bf51cd8d8fdc1f39e2c834925085181 Mon Sep 17 00:00:00 2001
From: Karel Vendla <karel@elevate.ee>
Date: Mon, 19 Apr 2021 13:23:59 +0300
Subject: [PATCH] i18n

---
 package-lock.json                   | 54 +++++++++++++++++++++++++----
 package.json                        |  3 ++
 public/locales/en.json              |  5 +++
 public/locales/est.json             |  5 +++
 src/components/LanguageSwitcher.vue | 35 +++++++++++++++++++
 src/components/TheFooter.vue        |  3 ++
 src/config/i18n.config.js           | 35 +++++++++++++++++++
 src/main.js                         |  2 ++
 src/router.js                       | 12 +++++++
 src/store/language.js               | 27 +++++++++++++++
 src/store/store.js                  |  2 ++
 src/views/dashboard/Invoices.vue    |  3 +-
 12 files changed, 179 insertions(+), 7 deletions(-)
 create mode 100644 public/locales/en.json
 create mode 100644 public/locales/est.json
 create mode 100644 src/components/LanguageSwitcher.vue
 create mode 100644 src/config/i18n.config.js
 create mode 100644 src/store/language.js

diff --git a/package-lock.json b/package-lock.json
index 88ac434..9bcde7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -795,7 +795,6 @@
       "version": "7.11.2",
       "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.11.2.tgz",
       "integrity": "sha512-TeWkU52so0mPtDcaCTxNBI/IHiz0pZgr8VEFqXFtZWpYD08ZB6FaSwVAS8MKRQAP3bYKiVjwysOJgMFY28o6Tw==",
-      "dev": true,
       "requires": {
         "regenerator-runtime": "^0.13.4"
       }
@@ -942,6 +941,21 @@
         "node-fetch": "^2.6.0"
       }
     },
+    "@panter/vue-i18next": {
+      "version": "0.15.2",
+      "resolved": "https://registry.npmjs.org/@panter/vue-i18next/-/vue-i18next-0.15.2.tgz",
+      "integrity": "sha512-7VX9GyxHJNEJKa2CRzC294Oz5EEbzVDZ1o3O/P8gL/PWBmcFOFsuivRbP/1a9ga2ihv/NBzoCWMCNIEEeCcONQ==",
+      "requires": {
+        "deepmerge": "^2.0.0"
+      },
+      "dependencies": {
+        "deepmerge": {
+          "version": "2.2.1",
+          "resolved": "https://registry.npmjs.org/deepmerge/-/deepmerge-2.2.1.tgz",
+          "integrity": "sha512-R9hc1Xa/NOBi9WRVUWg19rl1UB7Tt4kuPd+thNJgFZoxXsTz7ncaPaeIm+40oSGuP33DfMb4sZt1QIGiJzC4EA=="
+        }
+      }
+    },
     "@soda/friendly-errors-webpack-plugin": {
       "version": "1.7.1",
       "resolved": "https://registry.npmjs.org/@soda/friendly-errors-webpack-plugin/-/friendly-errors-webpack-plugin-1.7.1.tgz",
@@ -3143,7 +3157,8 @@
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "coa": {
       "version": "2.0.2",
@@ -6439,6 +6454,32 @@
       "integrity": "sha512-SEQu7vl8KjNL2eoGBLF3+wAjpsNfA9XMlXAYj/3EdaNfAlxKthD1xjEQfGOUhllCGGJVNY34bRr6lPINhNjyZw==",
       "dev": true
     },
+    "i18next": {
+      "version": "20.2.1",
+      "resolved": "https://registry.npmjs.org/i18next/-/i18next-20.2.1.tgz",
+      "integrity": "sha512-JLruWDEQ3T6tKT6P7u+DsNtToMHUwUcQIYOMRcnNBdUhSfKkoIDUKdVDKgGtmqr//LrirxjADUdr3d5Gwbow6g==",
+      "requires": {
+        "@babel/runtime": "^7.12.0"
+      },
+      "dependencies": {
+        "@babel/runtime": {
+          "version": "7.13.10",
+          "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.13.10.tgz",
+          "integrity": "sha512-4QPkjJq6Ns3V/RgpEahRk+AGfL0eO6RHHtTWoNNr5mO49G6B5+X6d6THgWEAvTrznU5xYpbAlVKRYcsCgh/Akw==",
+          "requires": {
+            "regenerator-runtime": "^0.13.4"
+          }
+        }
+      }
+    },
+    "i18next-browser-languagedetector": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/i18next-browser-languagedetector/-/i18next-browser-languagedetector-6.1.0.tgz",
+      "integrity": "sha512-NXbr/qPqkg6VyUwPrzmVOAafqIk1zdjzhYVxZWoSi338XEGmuOeroEglLdR8nJUJcf5BfOSHva80tqCPwXFTFQ==",
+      "requires": {
+        "@babel/runtime": "^7.5.5"
+      }
+    },
     "iconv-lite": {
       "version": "0.4.24",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
@@ -8821,7 +8862,8 @@
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
       "integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "pify": {
       "version": "4.0.1",
@@ -9964,8 +10006,7 @@
     "regenerator-runtime": {
       "version": "0.13.7",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz",
-      "integrity": "sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==",
-      "dev": true
+      "integrity": "sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew=="
     },
     "regenerator-transform": {
       "version": "0.14.5",
@@ -10346,7 +10387,8 @@
       "version": "4.0.8",
       "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
       "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "rx-lite-aggregates": {
       "version": "4.0.8",
diff --git a/package.json b/package.json
index 8a3dc22..94a72b6 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "lint": "vue-cli-service lint"
   },
   "dependencies": {
+    "@panter/vue-i18next": "^0.15.2",
     "@vuex-orm/core": "^0.36.3",
     "@vuex-orm/plugin-change-flags": "https://github.com/mareksmakosz/plugin-change-flags.git",
     "bootstrap": "^4.5.2",
@@ -15,6 +16,8 @@
     "core-js": "^2.6.5",
     "dayjs": "^1.10.3",
     "es6-promise": "^4.2.6",
+    "i18next": "^20.2.1",
+    "i18next-browser-languagedetector": "^6.1.0",
     "localforage": "^1.9.0",
     "lodash": "^4.17.21",
     "vue": "^2.6.10",
diff --git a/public/locales/en.json b/public/locales/en.json
new file mode 100644
index 0000000..1eb07aa
--- /dev/null
+++ b/public/locales/en.json
@@ -0,0 +1,5 @@
+{
+  "invoices": {
+    "title": "Invoices"
+  }
+}
diff --git a/public/locales/est.json b/public/locales/est.json
new file mode 100644
index 0000000..690aa32
--- /dev/null
+++ b/public/locales/est.json
@@ -0,0 +1,5 @@
+{
+  "invoices": {
+    "title": "Arved"
+  }
+}
diff --git a/src/components/LanguageSwitcher.vue b/src/components/LanguageSwitcher.vue
new file mode 100644
index 0000000..533b10e
--- /dev/null
+++ b/src/components/LanguageSwitcher.vue
@@ -0,0 +1,35 @@
+<template>
+    <b-dropdown v-if="selectedLang" variant="link" size="sm" no-caret right>
+        <template slot="button-content">
+            {{ selectedLang.code }}
+            <i class="material-icons">keyboard_arrow_down</i>
+        </template>
+        <template v-for="lang in languages" >
+            <b-dropdown-item-button @click="langChanged(lang)" :key="lang.code">{{ lang.name }}</b-dropdown-item-button>
+        </template>
+    </b-dropdown>
+</template>
+<script>
+import { mapState } from 'vuex';
+import { BDropdown, BDropdownItemButton } from 'bootstrap-vue';
+
+export default {
+  name: 'language-switcher',
+  i18nOptions: { namespaces: 'language-switcher' },
+  components: {
+    BDropdown,
+    BDropdownItemButton,
+  },
+  computed: {
+    ...mapState({
+      selectedLang: state => state.language.lang,
+      languages: state => state.language.all,
+    }),
+  },
+  methods: {
+    langChanged(lang) {
+      this.$store.dispatch('language/changeLanguage', lang);
+    },
+  },
+};
+</script>
diff --git a/src/components/TheFooter.vue b/src/components/TheFooter.vue
index 48b2e4e..f886c29 100644
--- a/src/components/TheFooter.vue
+++ b/src/components/TheFooter.vue
@@ -6,6 +6,7 @@
                 {{ theme === 'dark' ? 'wb_sunny' : 'brightness_2' }}
             </i>
         </button>
+        <LanguageSwitcher/>
         <div>
             <small v-b-tooltip.hover
                    title="All your data is saved in your browser and not on any server.
@@ -39,8 +40,10 @@
 <script>
 import { mapState } from 'vuex';
 import { VBTooltip } from 'bootstrap-vue';
+import LanguageSwitcher from './LanguageSwitcher';
 
 export default {
+  components: { LanguageSwitcher },
   directives: {
     'b-tooltip': VBTooltip,
   },
diff --git a/src/config/i18n.config.js b/src/config/i18n.config.js
new file mode 100644
index 0000000..d16eeaf
--- /dev/null
+++ b/src/config/i18n.config.js
@@ -0,0 +1,35 @@
+import Vue from 'vue';
+import i18next from 'i18next';
+import VueI18Next from '@panter/vue-i18next';
+import LanguageDetector from 'i18next-browser-languagedetector';
+import app from '@/main';
+import enJson from '../../public/locales/en';
+import estJson from '../../public/locales/est';
+
+Vue.use(VueI18Next);
+
+i18next.use(LanguageDetector);
+
+const initialized = i18next.init({
+  fallbackLng: 'en',
+  whitelist: ['en', 'est'],
+  resources: {
+    en: enJson,
+    est: estJson,
+  },
+  detection: {
+    order: ['querystring', 'path', 'localStorage', 'navigator'],
+    lookupQuerystring: 'lang',
+    caches: ['localStorage'],
+    checkWhitelist: true,
+  },
+});
+initialized.then(() => app.$store.dispatch('language/initLanguage', i18next.language));
+
+const i18n = new VueI18Next(i18next, {
+  loadComponentNamespace: true,
+});
+
+i18n.initialized = initialized;
+
+export default i18n;
diff --git a/src/main.js b/src/main.js
index 6b6467c..c75c595 100644
--- a/src/main.js
+++ b/src/main.js
@@ -6,6 +6,7 @@ import App from '@/App.vue';
 import router from '@/router';
 import store from '@/store/store';
 import VueNotifications from 'vue-notification';
+import i18n from './config/i18n.config';
 
 Vue.use(BVModalPlugin);
 Vue.use(VueNotifications);
@@ -15,6 +16,7 @@ Vue.config.productionTip = false;
 const app = new Vue({
   router,
   store,
+  i18n,
   render: h => h(App),
 }).$mount('#app');
 
diff --git a/src/router.js b/src/router.js
index c775df9..673f3c5 100644
--- a/src/router.js
+++ b/src/router.js
@@ -1,6 +1,7 @@
 import Vue from 'vue';
 import Router from 'vue-router';
 import store from '@/store/store';
+import i18n from '@/config/i18n.config';
 
 Vue.use(Router);
 
@@ -40,4 +41,15 @@ const router = new Router({
   routes,
 });
 
+router.beforeEach((to, from, next) => {
+  if (!to.query.hasOwnProperty('lang')) {
+    i18n.initialized.then(() => {
+      to.query.lang = i18n.i18next.language;
+      next(to);
+    });
+  } else {
+    next();
+  }
+});
+
 export default router;
diff --git a/src/store/language.js b/src/store/language.js
new file mode 100644
index 0000000..32f2799
--- /dev/null
+++ b/src/store/language.js
@@ -0,0 +1,27 @@
+import app from '../main';
+
+export default {
+  namespaced: true,
+  state: {
+    lang: null,
+    all: [
+      { name: 'English', code: 'en' },
+      { name: 'Estonian', code: 'est' },
+    ],
+  },
+  mutations: {
+    lang(state, lang) {
+      state.lang = lang;
+    },
+  },
+  actions: {
+    changeLanguage({ commit }, lang) {
+      app.$i18n.i18next.changeLanguage(lang.code);
+      app.$router.push({ query: { ...app.$route.query, lang: lang.code } });
+      commit('lang', lang);
+    },
+    initLanguage({ commit, state }, code) {
+      commit('lang', state.all.find(lang => lang.code === code));
+    },
+  },
+};
diff --git a/src/store/store.js b/src/store/store.js
index d25380c..5659f92 100644
--- a/src/store/store.js
+++ b/src/store/store.js
@@ -19,6 +19,7 @@ import teamFields from '@/store/team-fields';
 import themes from '@/store/themes';
 import taxes from '@/store/taxes';
 import data from '@/store/data';
+import language from '@/store/language';
 import ClientField from '@/store/models/client-field';
 import TeamField from '@/store/models/team-field';
 import InvoiceClientField from '@/store/models/invoice-client-field';
@@ -58,6 +59,7 @@ export default new Vuex.Store({
     themes,
     taxes,
     data,
+    language,
   },
   state: {},
   mutations: {},
diff --git a/src/views/dashboard/Invoices.vue b/src/views/dashboard/Invoices.vue
index 5359a27..0f0387e 100644
--- a/src/views/dashboard/Invoices.vue
+++ b/src/views/dashboard/Invoices.vue
@@ -2,7 +2,7 @@
     <div>
         <div class="row">
             <div class="col-12 mb-4 pr-0 d-flex justify-content-between">
-                <h4 class="mb-0">Invoices</h4>
+                <h4 class="mb-0">{{ $t('title') }}</h4>
                 <div>
                     <button class="btn btn-sm btn-outline-dark" @click="createNewInvoice">New invoice</button>
                     <b-dropdown variant="link" size="sm" no-caret right>
@@ -30,6 +30,7 @@ import InvoicesList from '@/components/invoices/InvoicesList';
 
 export default {
   name: 'invoices',
+  i18nOptions: { namespaces: 'invoices' },
   components: {
     InvoicesList,
     BDropdown,