feat: Blueprint removes <title> from app/index.html upon install for …

…FastBoot (#177)

* Blueprint removes <title> from app/index.html upon install for FastBoot

* Make replacement regular expression more strict

blueprints/ember-page-title/index.js

@@ -1,3 +1,42 @@
+'use strict';
+
+const path = require('path');
+const fs = require('fs');
+
 module.exports = {
-  normalizeEntityName: function () {}
+  normalizeEntityName() {},
+
+  afterInstall(opts) {
+    let project = opts.project;
+
+    let isFastBootPresent = 'ember-cli-fastboot' in project.dependencies();
+
+    if (isFastBootPresent) {
+      let isAddon = 'ember-addon' in project.pkg;
+
+      let indexHtmlPath = isAddon ?
+        path.join(project.root, 'tests', 'dummy', 'app', 'index.html') :
+        path.join(project.root, 'app', 'index.html');
+
+      if (fs.existsSync(indexHtmlPath)) {
+        const contents = fs.readFileSync(
+          indexHtmlPath,
+          {
+            encoding: 'utf8'
+          }
+        );
+
+        const titleMatches = contents.match(/<title>(.*)<\/title>/i);
+        const title = titleMatches[1] || "Example Title";
+        fs.writeFileSync(
+          indexHtmlPath,
+          contents.replace(/\s*<title>.*<\/title>/gi, ''),
+          {
+            encoding: 'utf8'
+          }
+        );
+        opts.ui.writeWarnLine(`<title> has been removed from index.html due to ember-cli-fastboot being present, please add {{page-title "${title}"}} to application.hbs`);
+      }
+    }
+  }
 };