Implement scraping of the web page name for the app

package.json

@@ -24,9 +24,11 @@
   "homepage": "https://github.com/jiahaog/nativefier#readme",
   "dependencies": {
     "async": "^1.5.2",
+    "cheerio": "^0.19.0",
     "commander": "^2.9.0",
     "electron-packager": "^5.2.1",
     "ncp": "^2.0.0",
+    "request": "^2.67.0",
     "tmp": "0.0.28",
     "validator": "^4.5.0"
   },

src/cli.js

@@ -2,6 +2,7 @@
 
 import path from 'path';
 import program from 'commander';
+import async from 'async';
 
 import optionsFactory from './options';
 import buildApp from './buildApp';
@@ -9,21 +10,28 @@ import buildApp from './buildApp';
 const packageJson = require(path.join('..', 'package'));
 
 function main(program) {
-    const options = optionsFactory(
-        program.appName,
-        program.targetUrl,
-        program.platform,
-        program.arch,
-        program.electronVersion,
-        program.outDir,
-        program.overwrite,
-        program.conceal,
-        program.icon,
-        program.badge,
-        program.width,
-        program.height);
 
-    buildApp(options, (error, appPath) => {
+    async.waterfall([
+        callback => {
+            optionsFactory(
+                program.appName,
+                program.targetUrl,
+                program.platform,
+                program.arch,
+                program.electronVersion,
+                program.outDir,
+                program.overwrite,
+                program.conceal,
+                program.icon,
+                program.badge,
+                program.width,
+                program.height, callback);
+        },
+
+        (options, callback) => {
+            buildApp(options, callback);
+        }
+    ], (error, appPath) => {
         if (error) {
             console.error(error);
             return;

src/options.js

@@ -1,12 +1,15 @@
 import os from 'os';
 import path from 'path';
 
+import request from 'request';
+import cheerio from 'cheerio';
 import validator from 'validator';
 
 const TEMPLATE_APP_DIR = path.join(__dirname, '../', 'app');
 const ELECTRON_VERSION = '0.36.4';
+const DEFAULT_APP_NAME = 'My App';
 
-function optionsFactory(name = 'MyApp',
+function optionsFactory(name,
                         targetUrl = 'http://google.com',
                         platform = detectPlatform(),
                         arch = detectArch(),
@@ -17,13 +20,13 @@ function optionsFactory(name = 'MyApp',
                         icon,
                         badge = false,
                         width = 1280,
-                        height = 800) {
+                        height = 800, callback) {
 
     if (!validator.isURL(targetUrl, {require_protocol: true})) {
         throw 'Your Url is invalid!, did you remember to include \'http://\'?';
     }
 
-    return {
+    const options = {
         dir: TEMPLATE_APP_DIR,
 
         name: name,
@@ -45,6 +48,23 @@ function optionsFactory(name = 'MyApp',
         width: width,
         height: height
     }
+
+    if (name && name.length > 0) {
+        options.name = name;
+        callback(null, options);
+        return;
+    }
+
+    getTitle(options.targetUrl, function (error, pageTitle) {
+        if (error) {
+            console.warn(`Unable to automatically determine app name, falling back to '${DEFAULT_APP_NAME}'`);
+            options.name = DEFAULT_APP_NAME;
+        } else {
+            options.name = pageTitle;
+        }
+
+        callback(null, options);
+    });
 }
 
 function detectPlatform() {
@@ -65,4 +85,17 @@ function detectArch() {
     return os.arch();
 }
 
+function getTitle(url, callback) {
+    request(url, (error, response, body) => {
+        if (error || response.statusCode !== 200) {
+            callback(`Request Error: ${error}, Status Code ${response.statusCode}`);
+            return;
+        }
+
+        const $ = cheerio.load(body);
+        const pageTitle = $("title").text();
+        callback(null, pageTitle);
+    });
+}
+
 export default optionsFactory;