chore: added loading locale from browser data

src/App.vue

@@ -22,6 +22,7 @@ import { defineComponent } from 'vue';
 import packageInfo from '../package.json';
 import { useStore } from './store/store';
 import orderStorageMixin from './mixins/orderStorageMixin';
+import StorageManager from './managers/storageManager';
 
 export default defineComponent({
   mixins: [orderStorageMixin],
@@ -31,20 +32,59 @@ export default defineComponent({
 
     return { offlineReady, needRefresh, updateServiceWorker };
   },
+
   data() {
     return { appVersion: packageInfo.version, store: useStore() };
   },
 
   created() {
-    document.title = `GeneraTOR ${this.appVersion}`;
-    this.store.orderDarkMode = this.getOrderSetting('dark-mode') === 'true';
+    this.init();
+  },
 
-    const query = new URLSearchParams(window.location.search);
+  methods: {
+    init() {
+      this.loadLang();
+      this.loadSettings();
+      this.handleQueries();
+    },
 
-    const id = query.get('sceneryId');
+    loadSettings() {
+      document.title = `GeneraTOR ${this.appVersion}`;
+      this.store.orderDarkMode = this.getOrderSetting('dark-mode') === 'true';
+    },
 
-    if (id != null) {
-      this.store.orderMode = 'OrderTrainPicker';
+    handleQueries() {
+      const query = new URLSearchParams(window.location.search);
+
+      const id = query.get('sceneryId');
+
+      if (id != null) {
+        this.store.orderMode = 'OrderTrainPicker';
+      }
+    },
+
+    changeLang(lang: string) {
+      this.$i18n.locale = lang;
+      this.store.currentAppLocale = lang;
+
+      StorageManager.setStringValue('lang', lang);
+    },
+
+    loadLang() {
+      const storageLang = StorageManager.getStringValue('lang');
+
+      if (storageLang) {
+        this.changeLang(storageLang);
+        return;
+      }
+
+      if (!window.navigator.language) return;
+
+      const naviLanguage = window.navigator.language.toString();
+
+      if (!naviLanguage.startsWith('pl')) {
+        this.changeLang('en');
+      }
     }
   }
 });

src/managers/storageManager.ts

@@ -0,0 +1,53 @@
+export default class StorageManager {
+  static registerStorage(name: string) {
+    window.localStorage.setItem(name, '1');
+  }
+
+  static unregisterStorage(name: string) {
+    window.localStorage.removeItem(name);
+  }
+
+  static isRegistered(name: string) {
+    return window.localStorage.getItem(name) ? true : false;
+  }
+
+  static setBooleanValue(key: string, val: boolean) {
+    window.localStorage.setItem(key, val.toString());
+  }
+
+  static setNumericValue(key: string, val: number) {
+    window.localStorage.setItem(key, val.toString());
+  }
+
+  static setStringValue(key: string, val: string) {
+    window.localStorage.setItem(key, val);
+  }
+
+  static setValue(key: string, val: any) {
+    if (typeof val == 'boolean') this.setBooleanValue(key, val);
+    else if (typeof val == 'number') this.setNumericValue(key, val);
+    else if (typeof val == 'string') this.setStringValue(key, val);
+    else this.setStringValue(key, val);
+  }
+
+  static removeValue(key: string) {
+    window.localStorage.removeItem(key);
+  }
+
+  static getValue(key: string) {
+    return window.localStorage.getItem(key);
+  }
+
+  static getBooleanValue(key: string): boolean {
+    return window.localStorage.getItem(key) === 'true' ? true : false;
+  }
+
+  static getStringValue(key: string): string {
+    return window.localStorage.getItem(key) || '';
+  }
+
+  static getNumericValue(key: string): number {
+    const itemValue = window.localStorage.getItem(key);
+    return itemValue ? parseInt(itemValue) : 0;
+  }
+}

src/store/store.ts

@@ -9,6 +9,8 @@ import {
 export const useStore = defineStore('store', {
   state: () => {
     return {
+      currentAppLocale: 'pl',
+      
       helperModalOpen: false,
       orderDarkMode: false,