Add trending links (#16917)

* Add trending links

* Add overriding specific links trendability

* Add link type to preview cards and only trend articles

Change trends review notifications from being sent every 5 minutes to being sent every 2 hours

Change threshold from 5 unique accounts to 15 unique accounts

* Fix tests

3 files changed, 104 insertions, 2 deletions

diff --git a/app/models/form/preview_card_batch.rb b/app/models/form/preview_card_batch.rb
new file mode 100644
index 000000000..5f6e6522a
--- /dev/null
+++ b/app/models/form/preview_card_batch.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+class Form::PreviewCardBatch
+  include ActiveModel::Model
+  include Authorization
+
+  attr_accessor :preview_card_ids, :action, :current_account, :precision
+
+  def save
+    case action
+    when 'approve'
+      approve!
+    when 'approve_all'
+      approve_all!
+    when 'reject'
+      reject!
+    when 'reject_all'
+      reject_all!
+    end
+  end
+
+  private
+
+  def preview_cards
+    @preview_cards ||= PreviewCard.where(id: preview_card_ids)
+  end
+
+  def preview_card_providers
+    @preview_card_providers ||= preview_cards.map(&:domain).uniq.map { |domain| PreviewCardProvider.matching_domain(domain) || PreviewCardProvider.new(domain: domain) }
+  end
+
+  def approve!
+    preview_cards.each { |preview_card| authorize(preview_card, :update?) }
+    preview_cards.update_all(trendable: true)
+  end
+
+  def approve_all!
+    preview_card_providers.each do |provider|
+      authorize(provider, :update?)
+      provider.update(trendable: true, reviewed_at: action_time)
+    end
+
+    # Reset any individual overrides
+    preview_cards.update_all(trendable: nil)
+  end
+
+  def reject!
+    preview_cards.each { |preview_card| authorize(preview_card, :update?) }
+    preview_cards.update_all(trendable: false)
+  end
+
+  def reject_all!
+    preview_card_providers.each do |provider|
+      authorize(provider, :update?)
+      provider.update(trendable: false, reviewed_at: action_time)
+    end
+
+    # Reset any individual overrides
+    preview_cards.update_all(trendable: nil)
+  end
+
+  def action_time
+    @action_time ||= Time.now.utc
+  end
+end
diff --git a/app/models/form/preview_card_provider_batch.rb b/app/models/form/preview_card_provider_batch.rb
new file mode 100644
index 000000000..e6ab3d8fa
--- /dev/null
+++ b/app/models/form/preview_card_provider_batch.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+class Form::PreviewCardProviderBatch
+  include ActiveModel::Model
+  include Authorization
+
+  attr_accessor :preview_card_provider_ids, :action, :current_account
+
+  def save
+    case action
+    when 'approve'
+      approve!
+    when 'reject'
+      reject!
+    end
+  end
+
+  private
+
+  def preview_card_providers
+    PreviewCardProvider.where(id: preview_card_provider_ids)
+  end
+
+  def approve!
+    preview_card_providers.each { |provider| authorize(provider, :update?) }
+    preview_card_providers.update_all(trendable: true, reviewed_at: Time.now.utc)
+  end
+
+  def reject!
+    preview_card_providers.each { |provider| authorize(provider, :update?) }
+    preview_card_providers.update_all(trendable: false, reviewed_at: Time.now.utc)
+  end
+end
diff --git a/app/models/form/tag_batch.rb b/app/models/form/tag_batch.rb
index fd517a1a6..b9330745f 100644
--- a/app/models/form/tag_batch.rb
+++ b/app/models/form/tag_batch.rb
@@ -23,11 +23,15 @@ class Form::TagBatch
 
   def approve!
     tags.each { |tag| authorize(tag, :update?) }
-    tags.update_all(trendable: true, reviewed_at: Time.now.utc)
+    tags.update_all(trendable: true, reviewed_at: action_time)
   end
 
   def reject!
     tags.each { |tag| authorize(tag, :update?) }
-    tags.update_all(trendable: false, reviewed_at: Time.now.utc)
+    tags.update_all(trendable: false, reviewed_at: action_time)
+  end
+
+  def action_time
+    @action_time ||= Time.now.utc
   end
 end