# frozen_string_literal: true

require "spec_helper"

RSpec.describe EmailReceiverWorker, :mailer do
  let(:raw_message) { fixture_file('emails/valid_reply.eml') }

  context "when reply by email is enabled" do
    before do
      allow(Gitlab::IncomingEmail).to receive(:enabled?).and_return(true)
    end

    it "calls the email receiver" do
      expect(Gitlab::Email::Receiver).to receive(:new).with(raw_message).and_call_original
      expect_any_instance_of(Gitlab::Email::Receiver).to receive(:execute)
      expect(Sidekiq.logger).to receive(:info).with(hash_including(message: "Successfully processed message")).and_call_original

      described_class.new.perform(raw_message)
    end

    context "when an error occurs" do
      before do
        allow_any_instance_of(Gitlab::Email::Receiver).to receive(:execute).and_raise(error)
        expect(Sidekiq.logger).to receive(:error).with(hash_including('exception.class' => error.class.name)).and_call_original
      end

      context 'when the error is Gitlab::Email::EmptyEmailError' do
        let(:error) { Gitlab::Email::EmptyEmailError.new }

        it 'sends out a rejection email' do
          perform_enqueued_jobs do
            described_class.new.perform(raw_message)
          end

          email = ActionMailer::Base.deliveries.last
          expect(email).not_to be_nil
          expect(email.to).to eq(["jake@adventuretime.ooo"])
          expect(email.subject).to include("Rejected")
        end
      end

      context 'when the error is Gitlab::Email::AutoGeneratedEmailError' do
        let(:error) { Gitlab::Email::AutoGeneratedEmailError.new }

        it 'does not send out any rejection email' do
          perform_enqueued_jobs do
            described_class.new.perform(raw_message)
          end

          should_not_email_anyone
        end
      end

      context 'when the error is Gitlab::Email::InvalidAttachment' do
        let(:error) { Gitlab::Email::InvalidAttachment.new("Could not deal with that") }

        it 'reports the error to the sender' do
          perform_enqueued_jobs do
            described_class.new.perform(raw_message)
          end

          email = ActionMailer::Base.deliveries.last
          expect(email).not_to be_nil
          expect(email.to).to eq(["jake@adventuretime.ooo"])
          expect(email.body.parts.last.to_s).to include("Could not deal with that")
        end
      end

      context 'when the error is ActiveRecord::StatementTimeout' do
        let(:error) { ActiveRecord::StatementTimeout.new("Statement timeout") }

        it 'does not report the error to the sender' do
          expect(Gitlab::ErrorTracking).to receive(:track_exception).with(error).and_call_original

          perform_enqueued_jobs do
            described_class.new.perform(raw_message)
          end

          email = ActionMailer::Base.deliveries.last
          expect(email).to be_nil
        end
      end
    end
  end

  context "when reply by email is disabled" do
    before do
      allow(Gitlab::IncomingEmail).to receive(:enabled?).and_return(false)
    end

    it "doesn't call the email receiver" do
      expect(Gitlab::Email::Receiver).not_to receive(:new)

      described_class.new.perform(raw_message)
    end
  end
end