Add option to change homepage (#617)

* Add option to change homepage

* Fix typo

* Add other routes for homepage as well

Author: mertkahyaoglu

README.md

@@ -28,9 +28,7 @@ Refer to the [installing plugins](https://jekyllrb.com/docs/plugins/installation
 
 ## Options
 
-Jekyll Admin related options can be specified in `_config.yml`
-under a key called `jekyll_admin`. Currently it has only one option `hidden_links`
-which is for hiding unwanted links on the sidebar. The following keys under `hidden_links` can be used in order to hide default links;
+Jekyll Admin related options can be specified in `_config.yml` under a key called `jekyll_admin`.
 
 ```yaml
 jekyll_admin:
@@ -40,6 +38,7 @@ jekyll_admin:
     - staticfiles
     - datafiles
     - configuration
+  homepage: "pages"
 ```
 
 ### Customizing collection label in Sidebar

docs/configs.md

@@ -23,3 +23,15 @@ jekyll_admin:
     - datafiles
     - configuration
 ```
+
+#### `homepage`
+
+Web page set as the default or start-up page for Jekyll Admin.
+
+Valid values for `homepage`: `pages` (default), `posts`, `<collection_name>`,
+`datafiles`, `staticfiles` ,`drafts` and `configuration`
+
+```yaml
+jekyll_admin:
+  homepage: "posts"
+```

spec/fixtures/site/_config.yml

@@ -96,3 +96,6 @@ collections:
   puppies:
     foo: bar
     output: false
+
+jekyll_admin:
+  homepage: "posts"

src/containers/App.js

@@ -7,6 +7,7 @@ import DocumentTitle from 'react-document-title';
 
 import { fetchConfig } from '../ducks/config';
 import keyboardShortcuts from '../constants/keyboardShortcuts';
+import { ADMIN_PREFIX } from '../constants';
 
 // Components
 import Sidebar from './Sidebar';
@@ -26,6 +27,41 @@ class App extends Component {
     }
   }
 
+  componentDidUpdate(prevProps) {
+    if (prevProps.isFetching && !this.props.isFetching) {
+      const {
+        config: {
+          content: {
+            jekyll_admin: { homepage },
+            collections,
+          },
+        },
+        router,
+      } = this.props;
+
+      const currentPathname = router.getCurrentLocation().pathname;
+
+      if (homepage && currentPathname === ADMIN_PREFIX) {
+        let url = `${ADMIN_PREFIX}/pages`;
+
+        const collectionNames = Object.keys(collections).concat('posts');
+        if (collectionNames.includes(homepage)) {
+          url = `${ADMIN_PREFIX}/collections/${homepage}`;
+        }
+
+        if (
+          ['drafts', 'datafiles', 'staticfiles', 'configuration'].includes(
+            homepage
+          )
+        ) {
+          url = `${ADMIN_PREFIX}/${homepage}`;
+        }
+
+        router.replace(url);
+      }
+    }
+  }
+
   render() {
     const { config, isFetching } = this.props;