Allow members to like posts by default and add setting

closes flarum/core#344

extensions/likes/js/admin/Gulpfile.js

@@ -0,0 +1,7 @@
+var gulp = require('flarum-gulp');
+
+gulp({
+  modules: {
+    'likes': 'src/**/*.js'
+  }
+});

extensions/likes/js/admin/package.json

@@ -0,0 +1,7 @@
+{
+  "private": true,
+  "devDependencies": {
+    "gulp": "^3.8.11",
+    "flarum-gulp": "^0.1.0"
+  }
+}

extensions/likes/js/admin/src/main.js

@@ -0,0 +1,12 @@
+import { extend } from 'flarum/extend';
+import app from 'flarum/app';
+import PermissionGrid from 'flarum/components/PermissionGrid';
+
+app.initializers.add('likes', () => {
+  extend(PermissionGrid.prototype, 'replyItems', items => {
+    items.add('likePosts', {
+      label: 'Like posts',
+      permission: 'discussion.likePosts'
+    });
+  });
+});

extensions/likes/js/forum/package.json

@@ -2,6 +2,6 @@
   "private": true,
   "devDependencies": {
     "gulp": "^3.8.11",
-    "flarum-gulp": "git+https://github.com/flarum/gulp.git"
+    "flarum-gulp": "^0.1.0"
   }
 }

extensions/likes/migrations/2015_09_04_000000_add_default_like_permissions.php

@@ -0,0 +1,39 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Flarum\Migrations\Migration;
+use Flarum\Core\Groups\Group;
+use Flarum\Core\Groups\Permission;
+
+class AddDefaultLikePermissions extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $permission = Permission::firstOrNew($this->getPermissionAttributes());
+
+        $permission->save();
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Permission::where($this->getPermissionAttributes())->delete();
+    }
+
+    protected function getPermissionAttributes()
+    {
+        return [
+            'group_id' => Group::MEMBER_ID,
+            'permission' => 'discussion.likePosts'
+        ];
+    }
+}

extensions/likes/src/Listeners/AddClientAssets.php

@@ -37,5 +37,11 @@ class AddClientAssets
             'likes.others',
             'likes.you'
         ]);
+
+        $event->adminAssets([
+            __DIR__.'/../../js/admin/dist/extension.js'
+        ]);
+
+        $event->adminBootstrapper('likes/main');
     }
 }