From 1c097bf9041939b286c1d2f764f65bcf017cd117 Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Sun, 6 Jan 2019 11:18:05 +0000
Subject: Support archiving govuk-guix revisions

---
 app/controllers/govuk_guix/revisions_controller.rb  |  9 +++++++++
 .../backends/terraform_aws/backend_methods.rb       |  2 +-
 .../backends/terraform_libvirt/backend_methods.rb   |  2 +-
 app/views/govuk_guix/revisions/show.html.erb        | 21 ++++++++++++++++++++-
 app/views/setup/show.html.erb                       |  1 +
 5 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/app/controllers/govuk_guix/revisions_controller.rb b/app/controllers/govuk_guix/revisions_controller.rb
index 14a3161..e4e1b52 100644
--- a/app/controllers/govuk_guix/revisions_controller.rb
+++ b/app/controllers/govuk_guix/revisions_controller.rb
@@ -23,6 +23,15 @@ class GovukGuix::RevisionsController < ApplicationController
     @revision = GovukGuix::Revision.find(params['id'])
   end
 
+  def destroy
+    @revision = GovukGuix::Revision.find(params['id'])
+
+    @revision.update(archived: true)
+    flash[:info] = "Archived #{@revision.commit_hash}..."
+
+    render :show
+  end
+
   def enqueue_fetch_revision
     revision = params.require('revision')
 
diff --git a/app/models/backends/terraform_aws/backend_methods.rb b/app/models/backends/terraform_aws/backend_methods.rb
index d6665a1..b7545d1 100644
--- a/app/models/backends/terraform_aws/backend_methods.rb
+++ b/app/models/backends/terraform_aws/backend_methods.rb
@@ -82,7 +82,7 @@ module Backends::TerraformAws::BackendMethods
 
   def in_use_store_paths
     [
-      GovukGuix::Revision.pluck(:store_path),
+      GovukGuix::Revision.where(archived: false).pluck(:store_path),
       available_data_snapshots.pluck(:store_path),
       mini_environments.pluck(:backend_data).map { |x| x&.dig('build_output') }
     ].flatten.compact
diff --git a/app/models/backends/terraform_libvirt/backend_methods.rb b/app/models/backends/terraform_libvirt/backend_methods.rb
index 85cd427..20ae379 100644
--- a/app/models/backends/terraform_libvirt/backend_methods.rb
+++ b/app/models/backends/terraform_libvirt/backend_methods.rb
@@ -56,7 +56,7 @@ module Backends::TerraformLibvirt::BackendMethods
 
   def in_use_store_paths
     [
-      GovukGuix::Revision.pluck(:store_path),
+      GovukGuix::Revision.where(archived: false).pluck(:store_path),
       available_data_snapshots.pluck(:store_path),
       mini_environments.pluck(:backend_data).map { |x| x.dig('build_output') }
     ].flatten.compact
diff --git a/app/views/govuk_guix/revisions/show.html.erb b/app/views/govuk_guix/revisions/show.html.erb
index d2ab03f..f59b343 100644
--- a/app/views/govuk_guix/revisions/show.html.erb
+++ b/app/views/govuk_guix/revisions/show.html.erb
@@ -31,7 +31,26 @@ License along with the GOV.UK Mini Environment Admin.  If not, see
 <div class="row">
   <div class="col-md-8">
     <h2>Store path</h2>
-    <pre><%= @revision.store_path %></pre>
+    <% if @revision.archived? %>
+      <del>
+        <pre><%= @revision.store_path %></pre>
+      </del>
+      (Archived)
+    <% else %>
+      <pre><%= @revision.store_path %></pre>
+
+      <%= form_with(
+        url: govuk_guix_revision_path(@revision),
+        local: true,
+        method: "delete"
+      ) do %>
+        <%= submit_tag('Archive',
+                       role: 'button',
+                       style: 'margin-bottom: 5px;',
+                       class: 'btn btn-lg btn-danger btn-block')
+        %>
+      <% end %>
+    <% end %>
   </div>
 </div>
 
diff --git a/app/views/setup/show.html.erb b/app/views/setup/show.html.erb
index 01b1f32..2eb7402 100644
--- a/app/views/setup/show.html.erb
+++ b/app/views/setup/show.html.erb
@@ -109,6 +109,7 @@ License along with the GOV.UK Mini Environment Admin.  If not, see
         <%= revision.commit_hash %>
       </span>
 
+      <% if revision.archived? %>(Archived)<% end %>
       <%= revision.created_at %>
     </a>
   <% end %>
-- 
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