Add new transition form

app/controllers/sites_controller.rb

@@ -1,11 +1,27 @@
 class SitesController < ApplicationController
-  before_action :find_site
+  before_action :find_site, only: %i[edit update show]
+  before_action :find_organisation, only: %i[new create]
   before_action :check_user_is_gds_editor, only: %i[edit update]
+  before_action :check_user_is_site_manager, only: %i[new create]
+
+  def new
+    @site_form = SiteForm.new(organisation_slug: @organisation.whitehall_slug)
+  end
+
+  def create
+    @site_form = SiteForm.new(create_params)
+
+    if (site = @site_form.save)
+      redirect_to site_path(site), flash: { success: "Transition site created" }
+    else
+      render :new
+    end
+  end
 
   def edit; end
 
   def update
-    if @site.update(site_params)
+    if @site.update(update_params)
       redirect_to site_path(@site), flash: { success: "Transition date updated" }
     else
       redirect_to edit_site_path(@site), flash: { alert: "We couldn't save your change" }
@@ -24,7 +40,30 @@ def find_site
     @site = Site.find_by!(abbr: params[:id])
   end
 
-  def site_params
+  def find_organisation
+    @organisation = Organisation.find_by(whitehall_slug: params[:organisation_id])
+  end
+
+  def create_params
+    params.require(:site_form).permit(
+      :organisation_slug,
+      :abbr,
+      :tna_timestamp,
+      :homepage,
+      :homepage_title,
+      :global_type,
+      :global_new_url,
+      :global_redirect_append_path,
+      :homepage_furl,
+      :hostname,
+      :query_params,
+      :special_redirect_strategy,
+      :aliases,
+      extra_organisations: [],
+    )
+  end
+
+  def update_params
     params.require(:site).permit(:launch_date)
   end
 
@@ -34,4 +73,11 @@ def check_user_is_gds_editor
       redirect_to site_path(@site), alert: message
     end
   end
+
+  def check_user_is_site_manager
+    unless current_user.site_manager?
+      message = "Only Site Managers can access that."
+      redirect_to organisation_path(@organisation), alert: message
+    end
+  end
 end

app/forms/site_form.rb

@@ -0,0 +1,105 @@
+class SiteForm
+  include ActiveModel::Model
+  include ActiveModel::Attributes
+
+  attribute :organisation_slug
+  attribute :abbr
+  attribute :tna_timestamp, :datetime
+  attribute :homepage
+  attribute :homepage_title
+  attribute :extra_organisations
+  attribute :global_type
+  attribute :global_new_url
+  attribute :homepage_furl
+  attribute :query_params
+  attribute :global_redirect_append_path, :boolean, default: false
+  attribute :special_redirect_strategy
+
+  attribute :hostname
+  attribute :aliases
+
+  validate :validate_children
+  validate :validate_aliases
+  validate :aliases_are_unique
+
+  def save
+    return false if invalid?
+
+    ActiveRecord::Base.transaction do
+      site.save!
+      hosts.each(&:save!)
+      aka_hosts.each(&:save!)
+    end
+
+    site
+  end
+
+  def organisations
+    Organisation.where.not(whitehall_slug: organisation_slug)
+  end
+
+private
+
+  def site
+    @site ||= Site.new(
+      abbr:,
+      tna_timestamp:,
+      homepage:,
+      organisation: Organisation.find_by(whitehall_slug: organisation_slug),
+      extra_organisations: Organisation.where(title: extra_organisations),
+      homepage_title:,
+      homepage_furl:,
+      global_type:,
+      global_new_url:,
+      global_redirect_append_path:,
+      query_params:,
+      special_redirect_strategy:,
+    )
+  end
+
+  def hosts
+    [default_host].concat(alias_hosts)
+  end
+
+  def aka_hosts
+    hosts.map { |host| build_aka_host(host) }
+  end
+
+  def default_host
+    @default_host ||= Host.new(hostname:, site:)
+  end
+
+  def alias_hosts
+    return [] if aliases.nil?
+
+    @alias_hosts ||= aliases.split(",").map do |host|
+      Host.new(hostname: host, site:)
+    end
+  end
+
+  def build_aka_host(host)
+    Host.new(hostname: host.aka_hostname, canonical_host: host, site:)
+  end
+
+  def validate_children
+    [site, default_host].each do |child|
+      errors.merge!(child.errors) if child.invalid?
+    end
+  end
+
+  def validate_aliases
+    alias_hosts.each do |host|
+      next if host.valid?
+
+      host.errors.each do |error|
+        errors.add(:aliases, "\"#{host.hostname}\" #{error.message}")
+      end
+    end
+  end
+
+  def aliases_are_unique
+    if alias_hosts.length != alias_hosts.map(&:hostname).uniq.length
+      errors.add(:aliases, "must be unique")
+    end
+  end
+end

app/models/concerns/nilify_blanks.rb

@@ -7,7 +7,15 @@ module NilifyBlanks
 
   def nilify_blanks
     attributes.each do |column, value|
+      next if nilify_except.include?(column.to_sym)
+
       self[column] = nil if value.blank?
     end
   end
+
+private
+
+  def nilify_except
+    []
+  end
 end

app/models/host.rb

@@ -11,7 +11,8 @@ class Host < ApplicationRecord
   validates :hostname, presence: true
   validates :hostname, hostname: true
   validates :site, presence: true
-  validate :canonical_host_id_xor_aka_present
+  validate :canonical_host_id_xor_aka_present, if: -> { hostname.present? }
+  validate :hostname_is_downcased, if: -> { hostname.present? }
 
   after_update :update_hits_relations, if: :saved_change_to_site_id?
 
@@ -71,4 +72,10 @@ def update_hits_relations
     hits.update_all(mapping_id: nil)
     Transition::Import::HitsMappingsRelations.refresh!(site)
   end
+
+  def hostname_is_downcased
+    if hostname != hostname.downcase
+      errors.add(:hostname, "must be lowercase")
+    end
+  end
 end

app/models/site.rb

@@ -2,6 +2,11 @@
 require "./lib/transition/path_or_url"
 
 class Site < ApplicationRecord
+  include NilifyBlanks
+
+  GLOBAL_TYPES = %w[redirect archive].freeze
+  SPECIAL_REDIRECT_STRATEGY_TYPES = %w[via_aka supplier].freeze
+
   belongs_to :organisation
 
   has_many :hosts
@@ -20,8 +25,9 @@ class Site < ApplicationRecord
   validates :organisation, presence: true
   validates :homepage, presence: true, non_blank_url: true
   validates :abbr, uniqueness: true, presence: true, format: { with: /\A[a-zA-Z0-9_-]+\z/, message: "can only contain alphanumeric characters, underscores and dashes" }
-  validates :special_redirect_strategy, inclusion: { in: %w[via_aka supplier], allow_nil: true }
+  validates :special_redirect_strategy, inclusion: { in: SPECIAL_REDIRECT_STRATEGY_TYPES, allow_blank: true }
   validates :global_new_url, presence: { if: :global_redirect? }
+  validates :global_new_url, absence: { if: :global_archive? }
   validates :global_new_url,
             format: { without: /\?/,
                       message: "cannot contain a query when the path is appended",
@@ -131,4 +137,8 @@ def should_remove_unused_view?
   def remove_all_hits_view
     Postgres::MaterializedView.drop(precomputed_view_name)
   end
+
+  def nilify_except
+    %i[global_redirect_append_path query_params precompute_all_hits_view]
+  end
 end

app/views/organisations/show.html.erb

@@ -10,6 +10,10 @@
   <%= render 'in_conjunction_with' %>
 </header>
 
+<% if current_user.site_manager? %>
+  <%= link_to "Add a transition site", new_organisation_site_path(@organisation), class: "btn btn-default" %>
+<% end %>
+
 <% unless @sites.empty? %>
   <h2>Sites</h2>
   <table class="sites table table-hover table-striped table-bordered" data-module="filterable-table">

app/views/sites/new.html.erb

@@ -0,0 +1,120 @@
+<% breadcrumb(:new_site, @organisation) %>
+
+<div class="page-title-with-border">
+  <h1>New transition site</h1>
+</div>
+
+<%= form_for @site_form, html: { role: "form" }, url: organisation_sites_path do |form| %>
+  <%= render "shared/error_messages", error_messages: form.object.errors.full_messages %>
+
+  <div class="form-group row">
+    <div class="col-md-8">
+      <%= form.hidden_field :organisation_slug, value: @organisation.whitehall_slug %>
+
+      <div class="form-group">
+        <%= form.label :abbr %>
+        <%= form.text_field :abbr, class: "form-control", aria: { describedby: "abbr-help" } %>
+        <small id="abbr-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.abbr") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :tna_timestamp %>
+        <%= form.text_field :tna_timestamp, class: "form-control", aria: { describedby: "tna-timestamp-help" } %>
+        <small id="tna-timestamp-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.tna_timestamp").html_safe %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :homepage %>
+        <%= form.text_field :homepage, class: "form-control", aria: { describedby: "homepage-help" } %>
+        <small id="homepage-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.homepage") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :hostname %>
+        <%= form.text_field :hostname, class: "form-control", aria: { describedby: "hostname-help" } %>
+        <small id="hostname-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.hostname") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :homepage_title %>
+        <%= form.text_field :homepage_title, class: "form-control", aria: { describedby: "homepage-title-help" } %>
+        <small id="homepage-title-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.homepage_title") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :extra_organisations %>
+        <%= form.collection_select :extra_organisations,
+                                   form.object.organisations,
+                                   :id,
+                                   :title,
+                                   {},
+                                   { multiple: true, class: "form-control", aria: { describedby: "extra-organisations-help" } }
+        %>
+        <small id="extra-organisations-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.extra_organisations") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :homepage_furl %>
+        <%= form.text_field :homepage_furl, class: "form-control", aria: { describedby: "homepage-furl-help" } %>
+        <small id="homepage-furl-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.homepage_furl") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :global_type %>
+        <%= form.collection_radio_buttons :global_type,
+                                          Site::GLOBAL_TYPES,
+                                          :to_s,
+                                          :humanize,
+                                          aria: { describedby: "global-type-help" } do |button| %>
+          <div class="radio">
+            <%= button.label do %>
+              <%= button.radio_button + button.text %>
+            <% end %>
+          </div>
+        <% end %>
+        <small id="global-type-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.global_type") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :global_new_url %>
+        <%= form.text_field :global_new_url, class: "form-control" %>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :query_params %>
+        <%= form.text_field :query_params, class: "form-control", aria: { describedby: "query-params-help" } %>
+        <small id="query-params-help" class="form-text text-muted row"><%= I18n.t("activemodel.hint.site_form.query_params") %></small>
+      </div>
+
+      <div class="form-check">
+        <%= form.label :global_redirect_append_path %>
+        <%= form.check_box :global_redirect_append_path, aria: { describedby: "global-redirect-append-path-help" } %>
+        <small id="global-redirect-append-path-help" class="form-text text-muted row"><%= I18n.t("activemodel.hint.site_form.global_redirect_append_path") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :special_redirect_strategy %>
+        <%= form.collection_radio_buttons :special_redirect_strategy,
+                                          Site::SPECIAL_REDIRECT_STRATEGY_TYPES,
+                                          :to_s,
+                                          :humanize,
+                                          aria: { describedby: "special-redirect-strategy-help" } do |button| %>
+          <div class="radio">
+            <%= button.label do %>
+              <%= button.radio_button + button.text %>
+            <% end %>
+          </div>
+        <% end %>
+        <small id="special-redirect-strategy-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.special_redirect_strategy") %></small>
+      </div>
+
+      <div class="form-group">
+        <%= form.label :aliases %>
+        <%= form.text_area :aliases, class: "form-control", aria: { describedby: "aliases-help" } %>
+        <small id="aliases-help" class="form-text text-muted"><%= I18n.t("activemodel.hint.site_form.aliases") %></small>
+      </div>
+
+      <%= form.submit 'Save', class: 'add-top-margin btn btn-success' %>
+    </div>
+  </div>
+<% end %>

config/breadcrumbs.rb

@@ -7,6 +7,11 @@
   parent :root
 end
 
+crumb :new_site do |organisation|
+  link "New transition site"
+  parent :organisation, organisation
+end
+
 crumb :site do |site|
   link site.default_host.hostname, site_path(site)
   parent :organisation, site.organisation