feat: Auto resolve conversations after n days of inactivity (#1308)

fixes: #418

spec/jobs/auto_resolve_conversations_job_spec.rb

@@ -0,0 +1,34 @@
+require 'rails_helper'
+
+RSpec.describe AutoResolveConversationsJob, type: :job do
+  subject(:job) { described_class.perform_later(conversation.id) }
+
+  let!(:account) { create(:account) }
+  let!(:conversation) { create(:conversation, account: account) }
+
+  it 'queues the job' do
+    expect { job }.to have_enqueued_job(described_class)
+      .with(conversation.id)
+      .on_queue('medium')
+  end
+
+  it 'does nothing when there is no auto resolve duration' do
+    described_class.perform_now(conversation.id)
+    expect(conversation.reload.status).to eq('open')
+  end
+
+  it 're-queues the job if there is still time left to allow inactivity' do
+    account.update(auto_resolve_duration: 10)
+    conversation.update(last_activity_at: 3.days.ago)
+    expect { described_class.perform_now(conversation.id) }.to have_enqueued_job(described_class)
+      .with(conversation.id)
+      .on_queue('medium')
+  end
+
+  it 'resolves the issue if time of inactivity is more than the auto resolve duration' do
+    account.update(auto_resolve_duration: 10)
+    conversation.update(last_activity_at: 13.days.ago)
+    described_class.perform_now(conversation.id)
+    expect(conversation.reload.status).to eq('resolved')
+  end
+end