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   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       sid: mysid
  49     };
  50     // Slow verification through the server:
  51     // NOTE: still superficial identity usurpation possible, but difficult.
  52     fetch(
  53       params.serverUrl + "/whoami",
  54       {
  55         method: "GET",
  56         headers: headers,
  57         credentials: params.credentials
  58       }
  59     )
  60     .then(res => res.json())
  61     .then(json => {
  62       this.state.user.id = json.id;
  63       const storedId = localStorage.getItem("myid");
  64       if (json.id > 0 && !storedId)
  65         // User cleared localStorage
  66         localStorage.setItem("myid", json.id);
  67       else if (json.id == 0 && !!storedId)
  68         // User cleared cookie
  69         localStorage.removeItem("myid");
  70       this.state.user.name = json.name;
  71       const storedName = localStorage.getItem("myname");
  72       if (!!json.name && !storedName)
  73         // User cleared localStorage
  74         localStorage.setItem("myname", json.name);
  75       else if (!json.name && !!storedName)
  76         // User cleared cookie
  77         localStorage.removeItem("myname");
  78       this.state.user.email = json.email;
  79       this.state.user.notify = json.notify;
  80     });
  81     // Settings initialized with values from localStorage
  82     const getItemDefaultTrue = (item) => {
  83       const value = localStorage.getItem(item);
  84       if (!value) return true;
  85       return value == "true";
  86     };
  87     this.state.settings = {
  88       bcolor: localStorage.getItem("bcolor") || "lichess",
  89       sound: getItemDefaultTrue("sound"),
  90       hints: getItemDefaultTrue("hints"),
  91       highlight: getItemDefaultTrue("highlight"),
  92       gotonext: getItemDefaultTrue("gotonext"),
  93       randomness: parseInt(localStorage.getItem("randomness"))
  94     };
  95     if (isNaN(this.state.settings.randomness))
  96       // Default: random asymmetric
  97       this.state.settings.randomness = 2;
  98     const supportedLangs = ["en", "es", "fr"];
  99     const navLanguage = navigator.language.substr(0, 2);
 100     this.state.lang =
 101       localStorage["lang"] ||
 102       (supportedLangs.includes(navLanguage) ? navLanguage : "en");
 103     this.setTranslations();
 104   },
 105   updateSetting: function(propName, value) {
 106     this.state.settings[propName] = value;
 107     localStorage.setItem(propName, value);
 108   },
 109   setTranslations: async function() {
 110     // Import translations from "./translations/$lang.js"
 111     const tModule = await import("@/translations/" + this.state.lang + ".js");
 112     this.state.tr = tModule.translations;
 113   },
 114   setLanguage(lang) {
 115     this.state.lang = lang;
 116     this.setTranslations();
 117   }
 118 };