client/src/store.js

   1 // NOTE: do not use ajax() here because ajax.js require the store for translations
   2 import params from "./parameters"; //for server URL
   3 import { getRandString } from "./utils/alea";
   4
   5 // Global store: see https://medium.com/fullstackio/managing-state-in-vue-js-23a0352b1c87
   6 export const store = {
   7   state: {
   8     variants: [],
   9     tr: {},
  10     user: {},
  11     settings: {},
  12     lang: ""
  13   },
  14   socketCloseListener: null,
  15   initialize() {
  16     const headers = {
  17       "Content-Type": "application/json;charset=UTF-8",
  18       "X-Requested-With": "XMLHttpRequest"
  19     };
  20     fetch(
  21       params.serverUrl + "/variants",
  22       {
  23         method: "GET",
  24         headers: headers
  25       }
  26     )
  27     .then(res => res.json())
  28     .then(json => {
  29       if (!Array.isArray(json.variantArray)) {
  30         alert("Variants loading failed: reload the page");
  31         return;
  32       }
  33       this.state.variants = json.variantArray
  34         .sort((v1,v2) => v1.name.localeCompare(v2.name));
  35     });
  36     let mysid = localStorage.getItem("mysid");
  37     // Assign mysid only once (until next time user clear browser data)
  38     if (!mysid) {
  39       mysid = getRandString();
  40       localStorage.setItem("mysid", mysid);
  41     }
  42     // Quick user setup using local storage:
  43     this.state.user = {
  44       id: localStorage.getItem("myid") || 0,
  45       name: localStorage.getItem("myname") || "", //"" for "anonymous"
  46       email: "", //unknown yet
  47       notify: false, //email notifications
  48       newsRead: localStorage.getItem("newsRead") || 0,
  49       sid: mysid
  50     };
  51     // Slow verification through the server:
  52     // NOTE: still superficial identity usurpation possible, but difficult.
  53     fetch(
  54       params.serverUrl + "/whoami",
  55       {
  56         method: "GET",
  57         headers: headers,
  58         credentials: params.credentials
  59       }
  60     )
  61     .then(res => res.json())
  62     .then(json => {
  63       this.state.user.id = json.id;
  64       const storedId = localStorage.getItem("myid");
  65       if (json.id > 0 && !storedId)
  66         // User cleared localStorage
  67         localStorage.setItem("myid", json.id);
  68       else if (json.id == 0 && !!storedId)
  69         // User cleared cookie
  70         localStorage.removeItem("myid");
  71       this.state.user.name = json.name;
  72       const storedName = localStorage.getItem("myname");
  73       if (!!json.name && !storedName)
  74         // User cleared localStorage
  75         localStorage.setItem("myname", json.name);
  76       else if (!json.name && !!storedName)
  77         // User cleared cookie
  78         localStorage.removeItem("myname");
  79       this.state.user.email = json.email;
  80       this.state.user.notify = json.notify;
  81       if (!!json.newsRead && json.newsRead > this.state.user.newsRead)
  82         this.state.user.newsRead = json.newsRead;
  83     });
  84     // Settings initialized with values from localStorage
  85     const getItemDefaultTrue = (item) => {
  86       const value = localStorage.getItem(item);
  87       if (!value) return true;
  88       return value == "true";
  89     };
  90     this.state.settings = {
  91       bcolor: localStorage.getItem("bcolor") || "lichess",
  92       sound: getItemDefaultTrue("sound"),
  93       hints: getItemDefaultTrue("hints"),
  94       highlight: getItemDefaultTrue("highlight"),
  95       gotonext: getItemDefaultTrue("gotonext"),
  96       randomness: parseInt(localStorage.getItem("randomness"))
  97     };
  98     if (isNaN(this.state.settings.randomness))
  99       // Default: random asymmetric
 100       this.state.settings.randomness = 2;
 101     const supportedLangs = ["en", "es", "fr"];
 102     const navLanguage = navigator.language.substr(0,2);
 103     this.state.lang =
 104       localStorage["lang"] ||
 105       (supportedLangs.includes(navLanguage) ? navLanguage : "en");
 106     this.setTranslations();
 107   },
 108   updateSetting: function(propName, value) {
 109     this.state.settings[propName] = value;
 110     localStorage.setItem(propName, value);
 111   },
 112   setTranslations: async function() {
 113     // Import translations from "./translations/$lang.js"
 114     const tModule = await import("@/translations/" + this.state.lang + ".js");
 115     this.state.tr = tModule.translations;
 116   },
 117   setLanguage(lang) {
 118     this.state.lang = lang;
 119     this.setTranslations();
 120   }
 121 };