# frozen_string_literal: true
require "email/receiver"

RSpec.describe GroupSmtpMailer do
  let(:group) do
    Fabricate(
      :group,
      name: "Testers",
      title: "Tester",
      full_name: "Testers Group",
      smtp_server: "smtp.gmail.com",
      smtp_port: 587,
      smtp_ssl: true,
      smtp_enabled: true,
      imap_server: "imap.gmail.com",
      imap_port: 993,
      imap_ssl: true,
      imap_enabled: true,
      email_username: "bugs@gmail.com",
      email_password: "super$secret$password",
    )
  end

  let(:user) do
    user = Fabricate(:user)
    group.add_owner(user)
    user
  end

  let(:email) { <<~EMAIL }
      Delivered-To: bugs@gmail.com
      MIME-Version: 1.0
      From: John Doe <john@doe.com>
      Date: Tue, 01 Jan 2019 12:00:00 +0200
      Message-ID: <a52f67a3d3560f2a35276cda8519b10b595623bcb66912bb92df6651ad5f75be@mail.gmail.com>
      Subject: Hello from John
      To: "bugs@gmail.com" <bugs@gmail.com>
      Cc: someotherperson@test.com
      Content-Type: text/plain; charset="UTF-8"

      Hello,

      How are you doing?
    EMAIL

  let(:receiver) do
    receiver = Email::Receiver.new(email, destinations: [group], uid_validity: 1, uid: 10_000)
    receiver.process!
    receiver
  end

  let(:raw) { "hello, how are you doing?" }

  before do
    SiteSetting.enable_smtp = true
    SiteSetting.enable_imap = true
    Jobs.run_immediately!
    SiteSetting.manual_polling_enabled = true
    SiteSetting.reply_by_email_address = "test+%{reply_key}@test.com"
    SiteSetting.reply_by_email_enabled = true
  end

  it "sends an email for first post when IMAP is disabled" do
    staged = Fabricate(:staged)
    group.update(imap_enabled: false)

    PostCreator.create!(
      user,
      skip_validations: true,
      title: "Hello from John",
      archetype: Archetype.private_message,
      target_usernames: staged.username,
      target_group_names: group.name,
      raw: raw,
    )

    expect(ActionMailer::Base.deliveries.size).to eq(1)

    sent_mail = ActionMailer::Base.deliveries[0]
    expect(sent_mail.to).to contain_exactly(staged.email)
    expect(sent_mail.subject).to eq("Hello from John")
    expect(sent_mail.to_s).to include(raw)
  end

  it "sends an email as reply" do
    post = PostCreator.create(user, topic_id: receiver.incoming_email.topic.id, raw: raw)

    expect(ActionMailer::Base.deliveries.size).to eq(1)

    sent_mail = ActionMailer::Base.deliveries[0]
    expect(sent_mail.to).to contain_exactly("john@doe.com")
    expect(sent_mail.cc).to contain_exactly("someotherperson@test.com")
    expect(sent_mail.reply_to).to eq(nil)
    expect(sent_mail.subject).to eq("Re: Hello from John")
    expect(sent_mail.to_s).to include(raw)
  end

  it "includes the participants list in the email" do
    Fabricate(:staged, email: "james.bond@gmail.com")
    topic = receiver.incoming_email.topic
    topic.invite(Discourse.system_user, "james.bond@gmail.com")

    PostCreator.create(user, topic_id: topic.id, raw: raw)

    expect(ActionMailer::Base.deliveries.size).to eq(1)

    sent_mail = ActionMailer::Base.deliveries[0]
    expect(sent_mail.to_s).to include(
      "[Testers Group (1)](http://test.localhost/g/Testers), james.bond@gmail.com",
    )
  end

  it "uses the OP incoming email subject for the subject over topic title" do
    receiver.incoming_email.topic.update(title: "blah")
    post = PostCreator.create(user, topic_id: receiver.incoming_email.topic.id, raw: raw)
    sent_mail = ActionMailer::Base.deliveries[0]
    expect(sent_mail.subject).to eq("Re: Hello from John")
  end

  it "configures delivery options for SMTP correctly" do
    mail = GroupSmtpMailer.send_mail(group, user.email, Fabricate(:post))
    expect(mail.delivery_method.settings).to eq(
      {
        address: "smtp.gmail.com",
        port: 587,
        domain: "gmail.com",
        user_name: "bugs@gmail.com",
        password: "super$secret$password",
        authentication: GlobalSetting.smtp_authentication,
        enable_starttls_auto: true,
        return_response: true,
        open_timeout: GlobalSetting.group_smtp_open_timeout,
        read_timeout: GlobalSetting.group_smtp_read_timeout,
      },
    )
  end

  context "when the site has a reply by email address configured" do
    before do
      SiteSetting.manual_polling_enabled = true
      SiteSetting.reply_by_email_address = "test+%{reply_key}@test.com"
      SiteSetting.reply_by_email_enabled = true
    end

    it "uses the correct IMAP/SMTP reply to address and does not create a post reply key" do
      post = PostCreator.create(user, topic_id: receiver.incoming_email.topic.id, raw: raw)

      expect(ActionMailer::Base.deliveries.size).to eq(1)

      expect(PostReplyKey.find_by(user_id: user.id, post_id: post.id)).to eq(nil)

      sent_mail = ActionMailer::Base.deliveries[0]
      expect(sent_mail.reply_to).to eq(nil)
      expect(sent_mail.from).to contain_exactly("bugs@gmail.com")
    end

    context "when IMAP is disabled for the group" do
      before { group.update(imap_enabled: false) }

      it "does send the email" do
        post = PostCreator.create(user, topic_id: receiver.incoming_email.topic.id, raw: raw)

        expect(ActionMailer::Base.deliveries.size).to eq(1)
      end
    end

    context "when SMTP is disabled for the group" do
      before { group.update(smtp_enabled: false) }

      it "does not send the email" do
        post = PostCreator.create(user, topic_id: receiver.incoming_email.topic.id, raw: raw)

        expect(ActionMailer::Base.deliveries.size).to eq(0)
      end
    end
  end
end