Implement Instance Moderation Notes (#31529)

app/controllers/admin/instances/moderation_notes_controller.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+class Admin::Instances::ModerationNotesController < Admin::BaseController
+  before_action :set_instance, only: [:create]
+  before_action :set_instance_note, only: [:destroy]
+
+  def create
+    authorize :instance_moderation_note, :create?
+
+    @instance_moderation_note = current_account.instance_moderation_notes.new(content: resource_params[:content], domain: @instance.domain)
+
+    if @instance_moderation_note.save
+      redirect_to admin_instance_path(@instance.domain, anchor: helpers.dom_id(@instance_moderation_note)), notice: I18n.t('admin.instances.moderation_notes.created_msg')
+    else
+      @instance_moderation_notes = @instance.moderation_notes.includes(:account).chronological
+      @time_period = (6.days.ago.to_date...Time.now.utc.to_date)
+      @action_logs = Admin::ActionLogFilter.new(target_domain: @instance.domain).results.limit(5)
+
+      render 'admin/instances/show'
+    end
+  end
+
+  def destroy
+    authorize @instance_moderation_note, :destroy?
+    @instance_moderation_note.destroy!
+    redirect_to admin_instance_path(@instance_moderation_note.domain, anchor: 'instance-notes'), notice: I18n.t('admin.instances.moderation_notes.destroyed_msg')
+  end
+
+  private
+
+  def resource_params
+    params
+      .expect(instance_moderation_note: [:content])
+  end
+
+  def set_instance
+    domain = params[:instance_id]&.strip
+    @instance = Instance.find_or_initialize_by(domain: TagManager.instance.normalize_domain(domain))
+  end
+
+  def set_instance_note
+    @instance_moderation_note = InstanceModerationNote.find(params[:id])
+  end
+end