client/src/store.js

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