Move config-getting to VectorBasePlatform

in Electron get config via IPC from main process
which has access to the "local" config.json override file
and can make people happy :D

Remove bunch of duplicated code,
and move comments around to put them in the right place

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

electron_app/src/electron-main.js

@@ -1,8 +1,8 @@
 /*
 Copyright 2016 Aviral Dasgupta
 Copyright 2016 OpenMarket Ltd
-Copyright 2017 Michael Telatynski <7t3chguy@gmail.com>
 Copyright 2018 New Vector Ltd
+Copyright 2017, 2019 Michael Telatynski <7t3chguy@gmail.com>
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -173,6 +173,9 @@ ipcMain.on('ipcCall', async function(ev, payload) {
             await migrateFromOldOrigin();
             migratingOrigin = false;
             break;
+        case 'getConfig':
+            ret = vectorConfig;
+            break;
         default:
             mainWindow.webContents.send('ipcReply', {
                 id: payload.id,

src/vector/getconfig.js

@@ -17,6 +17,8 @@ limitations under the License.
 import Promise from 'bluebird';
 import request from 'browser-request';
 
+// Load the config file. First try to load up a domain-specific config of the
+// form "config.$domain.json" and if that fails, fall back to config.json.
 export async function getVectorConfig(relativeLocation) {
     if (relativeLocation === undefined) relativeLocation = '';
     if (relativeLocation !== '' && !relativeLocation.endsWith('/')) relativeLocation += '/';
@@ -32,7 +34,7 @@ export async function getVectorConfig(relativeLocation) {
     }
 }
 
-function getConfig(configJsonFilename) {
+export function getConfig(configJsonFilename) {
     return new Promise(function(resolve, reject) {
         request(
             { method: "GET", url: configJsonFilename },

src/vector/index.js

@@ -2,6 +2,7 @@
 Copyright 2015, 2016 OpenMarket Ltd
 Copyright 2017 Vector Creations Ltd
 Copyright 2018, 2019 New Vector Ltd
+Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -66,8 +67,6 @@ import Olm from 'olm';
 
 import CallHandler from 'matrix-react-sdk/lib/CallHandler';
 
-import {getVectorConfig} from './getconfig';
-
 let lastLocationHashSet = null;
 
 // Disable warnings for now: we use deprecated bluebird functions
@@ -170,38 +169,6 @@ function makeRegistrationUrl(params) {
     return url;
 }
 
-export function getConfig(configJsonFilename) {
-    return new Promise(function(resolve, reject) {
-        request(
-            { method: "GET", url: configJsonFilename },
-            (err, response, body) => {
-                if (err || response.status < 200 || response.status >= 300) {
-                    // Lack of a config isn't an error, we should
-                    // just use the defaults.
-                    // Also treat a blank config as no config, assuming
-                    // the status code is 0, because we don't get 404s
-                    // from file: URIs so this is the only way we can
-                    // not fail if the file doesn't exist when loading
-                    // from a file:// URI.
-                    if (response) {
-                        if (response.status == 404 || (response.status == 0 && body == '')) {
-                            resolve({});
-                        }
-                    }
-                    reject({err: err, response: response});
-                    return;
-                }
-
-                // We parse the JSON ourselves rather than use the JSON
-                // parameter, since this throws a parse error on empty
-                // which breaks if there's no config.json and we're
-                // loading from the filesystem (see above).
-                resolve(JSON.parse(body));
-            },
-        );
-    });
-}
-
 function onTokenLoginCompleted() {
     // if we did a token login, we're now left with the token, hs and is
     // url as query params in the url; a little nasty but let's redirect to
@@ -252,12 +219,12 @@ async function loadApp() {
         PlatformPeg.set(new WebPlatform());
     }
 
-    // Load the config file. First try to load up a domain-specific config of the
-    // form "config.$domain.json" and if that fails, fall back to config.json.
+    const platform = PlatformPeg.get();
+
     let configJson;
     let configError;
     try {
-        configJson = await getVectorConfig();
+        configJson = await platform.getConfig();
     } catch (e) {
         configError = e;
     }
@@ -342,7 +309,6 @@ async function loadApp() {
             Unable to load config file: please refresh the page to try again.
         </div>, document.getElementById('matrixchat'));
     } else if (validBrowser || acceptInvalidBrowser) {
-        const platform = PlatformPeg.get();
         platform.startUpdater();
 
         // Don't bother loading the app until the config is verified

src/vector/platform/ElectronPlatform.js

@@ -4,6 +4,7 @@
 Copyright 2016 Aviral Dasgupta
 Copyright 2016 OpenMarket Ltd
 Copyright 2018 New Vector Ltd
+Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -101,6 +102,10 @@ export default class ElectronPlatform extends VectorBasePlatform {
         this.stopUpdateCheck = this.stopUpdateCheck.bind(this);
     }
 
+    async getConfig(): Promise<{}> {
+        return this._ipcCall('getConfig');
+    }
+
     async onUpdateDownloaded(ev, updateInfo) {
         dis.dispatch({
             action: 'new_version',

src/vector/platform/VectorBasePlatform.js

@@ -4,6 +4,7 @@
 Copyright 2016 Aviral Dasgupta
 Copyright 2016 OpenMarket Ltd
 Copyright 2018 New Vector Ltd
+Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -21,6 +22,7 @@ limitations under the License.
 import BasePlatform from 'matrix-react-sdk/lib/BasePlatform';
 import { _t } from 'matrix-react-sdk/lib/languageHandler';
 import dis from 'matrix-react-sdk/lib/dispatcher';
+import {getVectorConfig} from "../getconfig";
 
 import Favico from 'favico.js';
 
@@ -44,6 +46,10 @@ export default class VectorBasePlatform extends BasePlatform {
         this.stopUpdateCheck = this.stopUpdateCheck.bind(this);
     }
 
+    async getConfig(): Promise<{}> {
+        return getVectorConfig();
+    }
+
     getHumanReadableName(): string {
         return 'Vector Base Platform'; // no translation required: only used for analytics
     }