feat: download phet labs in requested language

closes #78

package.json

@@ -48,6 +48,7 @@
     "@sentry/browser": "5.1.1",
     "@sentry/electron": "0.17.1",
     "archiver": "3.0.0",
+    "cheerio": "1.0.0-rc.3",
     "classnames": "2.2.6",
     "connected-react-router": "6.4.0",
     "electron-devtools-installer": "2.2.4",
@@ -83,6 +84,7 @@
     "redux-devtools-extension": "2.13.8",
     "redux-promise": "0.6.0",
     "redux-thunk": "2.3.0",
+    "request-promise": "4.2.4",
     "rimraf": "2.6.3",
     "universal-analytics": "0.4.20",
     "wait-on": "3.2.0"

public/app/config/mapping.js

@@ -1,4 +1 @@
-module.exports = {
-  'https://gateway.golabz.eu/os/pub/phet/http%25253A%25252F%25252Fphet.colorado.edu%25252Fen%25252Fsimulation%25252Fwave-on-a-string/w_default.html':
-    'https://apps.graasp.eu/5acb589d0d5d9464081c2d46/5ccae1f6203454853b0aabcb/latest/index.html',
-};
+module.exports = {};

public/app/config/providers.js

@@ -0,0 +1 @@
+module.exports = ['gateway.golabz.eu'];

public/app/download.js

@@ -0,0 +1,27 @@
+const request = require('request-promise');
+const cheerio = require('cheerio');
+const providers = require('./config/providers');
+
+const getDownloadUrl = async ({ url, lang }) => {
+  let proxied = false;
+  providers.forEach(provider => {
+    if (url.includes(provider)) {
+      proxied = true;
+    }
+  });
+  if (!proxied) {
+    return false;
+  }
+  const res = await request(url);
+  const $ = cheerio.load(res);
+  const elem = $(`meta[name="download"][language="${lang}"]`);
+  if (elem) {
+    return elem.attr('value');
+  }
+  // todo: fall back on another language if requested is not available?
+  return false;
+};
+
+module.exports = {
+  getDownloadUrl,
+};

public/electron.js

@@ -20,6 +20,7 @@ const Sentry = require('@sentry/electron');
 const ua = require('universal-analytics');
 const { machineIdSync } = require('node-machine-id');
 const logger = require('./app/logger');
+const { getDownloadUrl } = require('./app/download');
 const {
   getExtension,
   isDownloadable,
@@ -252,6 +253,7 @@ app.on('ready', async () => {
     try {
       // get handle to spaces collection
       const spaces = db.get(SPACES_COLLECTION);
+      const lang = db.get('user.lang').value();
       const { id } = space;
       const existingSpace = spaces.find({ id }).value();
 
@@ -323,6 +325,13 @@ app.on('ready', async () => {
               url = mapping[url];
             }
 
+            // download from proxy url if available
+            // eslint-disable-next-line no-await-in-loop
+            const downloadUrl = await getDownloadUrl({ url, lang });
+            if (downloadUrl) {
+              url = downloadUrl;
+            }
+
             // generate hash and get extension to save file
             const hash = generateHash(resource);
             const ext = getExtension(resource);

src/config/i18n.js

@@ -5,10 +5,10 @@ import fr from '../langs/fr';
 
 i18n.use(initReactI18next).init({
   resources: {
-    en_all: en,
-    fr_all: fr,
+    en_ALL: en,
+    fr_ALL: fr,
   },
-  fallbackLng: 'en_all',
+  fallbackLng: 'en_ALL',
   // debug only when not in production
   debug: process.env.NODE_ENV !== 'production',
   ns: ['translations'],
@@ -24,34 +24,34 @@ i18n.use(initReactI18next).init({
 });
 
 const langs = {
-  // bg_all: "български",
-  // ca_all: "Català",
-  // cs_all: "čeština",
-  // de_all: "Deutsch",
-  // el_all: "Ελληνικά",
-  en_all: 'English',
-  // es_all: "Español",
-  // et_all: "Eesti",
-  // fi_all: "Suomi",
-  fr_all: 'Français',
-  // hu_all: "Magyar",
-  // it_all: "Italiano",
-  // ja_all: "日本語",
-  // ka_all: "ქართული",
-  // lt_all: "lietuvių kalba",
-  // lv_all: "Latviešu",
-  // nl_all: "Nederlands",
-  // pt_all: "Português",
-  // ro_all: "Română",
-  // ru_all: "Русский",
-  // sk_all: "Slovenský",
-  // sl_all: "Slovenščina",
-  // sr_all: "српски језик",
-  // sw_all: "Kiswahili",
-  // tr_all: "Türkçe",
-  // uk_all: "Українська",
-  // vi_all: "Tiếng Việt",
-  // zh_all: "简体中文",
+  // bg_ALL: "български",
+  // ca_ALL: "Català",
+  // cs_ALL: "čeština",
+  // de_ALL: "Deutsch",
+  // el_ALL: "Ελληνικά",
+  en_ALL: 'English',
+  // es_ALL: "Español",
+  // et_ALL: "Eesti",
+  // fi_ALL: "Suomi",
+  fr_ALL: 'Français',
+  // hu_ALL: "Magyar",
+  // it_ALL: "Italiano",
+  // ja_ALL: "日本語",
+  // ka_ALL: "ქართული",
+  // lt_ALL: "lietuvių kalba",
+  // lv_ALL: "Latviešu",
+  // nl_ALL: "Nederlands",
+  // pt_ALL: "Português",
+  // ro_ALL: "Română",
+  // ru_ALL: "Русский",
+  // sk_ALL: "Slovenský",
+  // sl_ALL: "Slovenščina",
+  // sr_ALL: "српски језик",
+  // sw_ALL: "Kiswahili",
+  // tr_ALL: "Türkçe",
+  // uk_ALL: "Українська",
+  // vi_ALL: "Tiếng Việt",
+  // zh_ALL: "简体中文",
   // zh_tw: "繁體中文",
 };
 

yarn.lock

@@ -3205,7 +3205,7 @@ charenc@~0.0.1:
   resolved "https://registry.yarnpkg.com/charenc/-/charenc-0.0.2.tgz#c0a1d2f3a7092e03774bfa83f14c0fc5790a8667"
   integrity sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc=
 
-cheerio@^1.0.0-rc.2:
+cheerio@1.0.0-rc.3, cheerio@^1.0.0-rc.2:
   version "1.0.0-rc.3"
   resolved "https://registry.yarnpkg.com/cheerio/-/cheerio-1.0.0-rc.3.tgz#094636d425b2e9c0f4eb91a46c05630c9a1a8bf6"
   integrity sha512-0td5ijfUPuubwLUu0OBoe98gZj8C/AA+RW3v67GPlGOrvxWjZmBXiBCRU+I8VEiNyJzjth40POfHiz2RB3gImA==
@@ -11317,7 +11317,7 @@ request-promise-native@^1.0.5:
     stealthy-require "^1.1.1"
     tough-cookie "^2.3.3"
 
-request-promise@^4.x:
+request-promise@4.2.4, request-promise@^4.x:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/request-promise/-/request-promise-4.2.4.tgz#1c5ed0d71441e38ad58c7ce4ea4ea5b06d54b310"
   integrity sha512-8wgMrvE546PzbR5WbYxUQogUnUDfM0S7QIFZMID+J73vdFARkFy+HElj4T+MWYhpXwlLp0EQ8Zoj8xUA0he4Vg==