Improve user block/removal from admin area

Provide UI with explanation what happens when you block or remove user
When remove user - remove all groups where user is an only owner

app/controllers/admin/users_controller.rb

@@ -83,14 +83,10 @@ class Admin::UsersController < Admin::ApplicationController
   end
 
   def destroy
-    # 1. Move all user groups to admin
-    user.own_groups.each do |group|
-      group.owner_id = User.admins.first
-      group.save
-    end
+    # 1. Remove groups where user is the only owner
+    user.solo_owned_groups.map(&:destroy)
 
-    # 2. Remove user with all authored contenst
-    #    including personal projects
+    # 2. Remove user with all authored content including personal projects
     user.destroy
 
     respond_to do |format|

app/models/group.rb

@@ -23,7 +23,7 @@ class Group < Namespace
   end
 
   def owners
-    @owners ||= (users_groups.owners.map(&:user) << owner)
+    @owners ||= (users_groups.owners.map(&:user) << owner).uniq
   end
 
   def add_users(user_ids, group_access)

app/models/user.rb

@@ -135,7 +135,7 @@ class User < ActiveRecord::Base
       # Remove user from all groups
       user.users_groups.find_each do |membership|
         # skip owned resources
-        next if membership.group.owner == user
+        next if membership.group.owners.include?(user)
 
         return false unless membership.destroy
       end
@@ -376,4 +376,10 @@ class User < ActiveRecord::Base
       self.send("#{attr}=", Sanitize.clean(value)) if value.present?
     end
   end
+
+  def solo_owned_groups
+    @solo_owned_groups ||= owned_groups.select do |group|
+      group.owners == [self]
+    end
+  end
 end

app/views/admin/users/show.html.haml

@@ -10,11 +10,8 @@
     = link_to edit_admin_user_path(@user), class: "btn grouped" do
       %i.icon-edit
       Edit
-    - unless @user == current_user
     - if @user.blocked?
       = link_to 'Unblock', unblock_admin_user_path(@user), method: :put, class: "btn grouped success"
-      - else
-        = link_to 'Block', block_admin_user_path(@user), confirm: 'USER WILL BE BLOCKED! Are you sure?', method: :put, class: "btn grouped btn-remove"
 %hr
 
 .row
@@ -62,14 +59,33 @@
             %strong
               = link_to @user.created_by.name, [:admin, @user.created_by]
 
+    - unless @user == current_user
+      .alert
+        %h4 Block user
+        %br
+        %p Blocking user has the following effects:
+        %ul
+          %li User will not be able to login
+          %li User will not be able to access git repositories
+          %li User will be removed from joined projects and groups
+          %li Personal projects will be left
+          %li Owned groups will be left
+        = link_to 'Block user', block_admin_user_path(@user), confirm: 'USER WILL BE BLOCKED! Are you sure?', method: :put, class: "btn btn-remove"
+
       .alert.alert-error
-      %h4 Remove user
+        %h4
+          Remove user
         %br
         %p Deleting a user has the following effects:
         %ul
           %li All user content like authored issues, snippets, comments will be removed
-        %li User personal projects will be removed and cannot be restored
-        %li Owned groups will be transfered to first admin
+          - rp = @user.personal_projects.count
+          - unless rp.zero?
+            %li #{pluralize rp, 'personal project'} will be removed and cannot be restored
+          - if @user.solo_owned_groups.present?
+            %li
+              Next groups with all content will be removed:
+              %strong #{@user.solo_owned_groups.map(&:name).join(', ')}
         = link_to 'Remove user', [:admin, @user], confirm: "USER #{@user.name} WILL BE REMOVED! Are you sure?", method: :delete, class: "btn btn-remove"
 
   .span6