add ability to restore deleted sites

app/signin.rb

@@ -1,7 +1,7 @@
 get '/signin/?' do
   dashboard_if_signed_in
   @title = 'Sign In'
-  erb :'signin'
+  erb :'signin/index'
 end
 
 post '/signin' do
@@ -16,6 +16,11 @@ post '/signin' do
       redirect '/signin'
     end
 
+    if site.is_deleted
+      session[:deleted_site_id] = site.id
+      redirect '/signin/restore'
+    end
+
     session[:id] = site.id
     redirect '/'
   else
@@ -25,6 +30,33 @@ post '/signin' do
   end
 end
 
+get '/signin/restore' do
+  redirect '/' unless session[:deleted_site_id]
+  @site = Site[session[:deleted_site_id]]
+  redirect '/' if @site.nil?
+  erb :'signin/restore'
+end
+
+get '/signin/cancel_restore' do
+  session[:deleted_site_id] = nil
+  flash[:success] = 'Site restore was cancelled.'
+  redirect '/'
+end
+
+post '/signin/restore' do
+  redirect '/' unless session[:deleted_site_id]
+  @site = Site[session[:deleted_site_id]]
+  session[:deleted_site_id] = nil
+
+  if @site.undelete!
+    session[:id] = @site.id
+  else
+    flash[:error] = "Sorry, we cannot restore this account."
+  end
+
+  redirect '/'
+end
+
 get '/signin/:username' do
   require_login
   @site = Site[username: params[:username]]

models/site.rb

@@ -287,7 +287,7 @@ class Site < Sequel::Model
 
     def get_site_from_login(username_or_email, plaintext)
       site = get_with_identifier username_or_email
-      return nil if site.nil? || site.is_deleted || site.is_banned || !site.valid_password?(plaintext)
+      return nil if site.nil? || site.is_banned || !site.valid_password?(plaintext)
       site
     end
 
@@ -445,19 +445,26 @@ class Site < Sequel::Model
   def before_destroy
     DB.transaction {
       owner.end_supporter_membership! if parent?
-
-      if !Dir.exist? DELETED_SITES_ROOT
-        FileUtils.mkdir DELETED_SITES_ROOT
-      end
-
       FileUtils.mkdir_p File.join(DELETED_SITES_ROOT, self.class.sharding_dir(username))
-      FileUtils.mv files_path, File.join(DELETED_SITES_ROOT, self.class.sharding_dir(username), '/')
+      FileUtils.mv files_path, deleted_files_path
       remove_all_tags
       #remove_all_events
       #Event.where(actioning_site_id: id).destroy
     }
   end
 
+  def undelete!
+    return false unless Dir.exist? deleted_files_path
+    FileUtils.mkdir_p File.join(SITE_FILES_ROOT, self.class.sharding_dir(username))
+
+    DB.transaction {
+      FileUtils.mv deleted_files_path, files_path
+      self.is_deleted = false
+      save_changes
+    }
+    true
+  end
+
   def is_banned?
     is_banned
   end
@@ -1033,6 +1040,11 @@ class Site < Sequel::Model
     File.join SITE_FILES_ROOT, self.class.sharding_dir(name), name
   end
 
+  def base_deleted_files_path(name=username)
+    raise 'username missing' if name.nil? || name.empty?
+    File.join DELETED_SITES_ROOT, self.class.sharding_dir(name), name
+  end
+
   def self.sharding_base_path(name)
     File.join SITE_FILES_ROOT, sharding_dir(name)
   end
@@ -1065,6 +1077,10 @@ class Site < Sequel::Model
     File.join base_files_path, scrubbed_path(path)
   end
 
+  def deleted_files_path(path='')
+    File.join base_deleted_files_path, scrubbed_path(path)
+  end
+
   def file_list(path='')
     list = Dir.glob(File.join(files_path(path), '*')).collect do |file_path|
       file = {

tests/acceptance/signin_tests.rb

@@ -13,6 +13,23 @@ describe 'signin' do
     Capybara.reset_sessions!
   end
 
+  it 'restores a deleted site' do
+    pass = SecureRandom.hex
+    @site = Fabricate :site, password: pass
+    @site.destroy
+    Dir.exist?(@site.files_path).must_equal false
+    Dir.exist?(@site.deleted_files_path).must_equal true
+    visit '/signin'
+    fill_in 'username', with: @site.username
+    fill_in 'password', with: pass
+    click_button 'Sign In'
+    page.must_have_content 'Restore Site'
+    click_button 'Restore Site'
+    Dir.exist?(@site.deleted_files_path).must_equal false
+    Dir.exist?(@site.files_path).must_equal true
+    @site.reload.is_deleted.must_equal false
+  end
+
   it 'fails for invalid signin' do
     visit '/'
     click_link 'Sign In'

views/signin/restore.erb

@@ -0,0 +1,21 @@
+<div class="header-Outro">
+  <div class="row content single-Col txt-Center">
+  <h1>Restore Site</h1>
+  <h3 class="subtitle"></h3>
+  </div>
+</div>
+
+<div class="content txt-Center single-Col misc-page">
+  <%== flash_display %>
+
+  <h3>Your site was deleted.</h3>
+
+  <p>Would you like to restore your site?<br><br><strong><%= @site.username %>.neocities.org</strong></p>
+
+  <form method="POST" action="/signin/restore" class="content">
+    <input name="csrf_token" type="hidden" value="<%= csrf_token %>">
+    <input class="btn-Action" type="submit" value="Restore Site">
+  </form>
+  <br>
+  <a href="/">No, please keep this site deleted.</a>
+</div>