Strip the '[Gmail]/' prefix from folder names.

Summary:
T7253 has two related parts:
1. Stripping the '[Gmail]/' prefix from any canonical Gmail folders
2. Handling nested IMAP folders.

This diff fixes 1. Changes for 2. are forthcoming.

Test Plan: Tested manually. Checked that the part was stripped from the N1 folder list.

Reviewers: juan

Reviewed By: juan

Differential Revision: https://phab.nylas.com/D3475

packages/local-sync/src/models/folder.js

@@ -1,4 +1,5 @@
 const {DatabaseTypes: {JSONType}} = require('isomorphic-core');
+const {formatImapPath} = require('../shared/imap-paths-utils');
 
 module.exports = (sequelize, Sequelize) => {
   return sequelize.define('folder', {
@@ -32,7 +33,7 @@ module.exports = (sequelize, Sequelize) => {
           account_id: this.accountId,
           object: 'folder',
           name: this.role,
-          display_name: this.name,
+          display_name: formatImapPath(this.name),
         };
       },
     },

packages/local-sync/src/models/label.js

@@ -1,3 +1,5 @@
+const {formatImapPath} = require('../shared/imap-paths-utils');
+
 module.exports = (sequelize, Sequelize) => {
   return sequelize.define('label', {
     id: { type: Sequelize.STRING(65), primaryKey: true },
@@ -53,7 +55,7 @@ module.exports = (sequelize, Sequelize) => {
           account_id: this.accountId,
           object: 'label',
           name: this.role,
-          display_name: this.name,
+          display_name: formatImapPath(this.name),
         };
       },
     },

packages/local-sync/src/shared/imap-paths-utils.js

@@ -0,0 +1,10 @@
+function formatImapPath(pathStr) {
+  if (!pathStr) {
+    throw new Error("Can not format an empty path!");
+  }
+
+  const s = pathStr.replace(/^\[Gmail\]\//, '');
+  return s;
+}
+
+module.exports = {formatImapPath}