require "rails_helper"

describe "Notifications" do
  let(:user) { create :user }

  before do
    login_as(user)
    visit root_path
  end

  scenario "View all" do
    read1 = create(:notification, :read, user: user)
    read2 = create(:notification, :read, user: user)
    unread = create(:notification, user: user)

    click_notifications_icon
    click_link "Read"

    expect(page).to have_css(".notification", count: 2)
    expect(page).to have_content(read1.notifiable_title)
    expect(page).to have_content(read2.notifiable_title)
    expect(page).not_to have_content(unread.notifiable_title)
  end

  scenario "View unread" do
    unread1 = create(:notification, user: user)
    unread2 = create(:notification, user: user)
    read = create(:notification, :read, user: user)

    click_notifications_icon
    click_link "Unread"

    expect(page).to have_css(".notification", count: 2)
    expect(page).to have_content(unread1.notifiable_title)
    expect(page).to have_content(unread2.notifiable_title)
    expect(page).not_to have_content(read.notifiable_title)
  end

  scenario "View single notification" do
    proposal = create(:proposal)
    create(:notification, user: user, notifiable: proposal)

    click_notifications_icon

    first(".notification a").click
    expect(page).to have_current_path(proposal_path(proposal))

    visit notifications_path
    expect(page).to have_css ".notification", count: 0

    visit read_notifications_path
    expect(page).to have_css ".notification", count: 1
  end

  scenario "Mark as read", :js do
    notification1 = create(:notification, user: user)
    notification2 = create(:notification, user: user)

    click_notifications_icon

    within("#notification_#{notification1.id}") do
      click_link "Mark as read"
    end

    expect(page).to have_css(".notification", count: 1)
    expect(page).to have_content(notification2.notifiable_title)
    expect(page).not_to have_content(notification1.notifiable_title)
  end

  scenario "Mark all as read" do
    2.times { create(:notification, user: user) }

    click_notifications_icon

    expect(page).to have_css(".notification", count: 2)
    click_link "Mark all as read"

    expect(page).to have_css(".notification", count: 0)
  end

  scenario "Mark as unread", :js do
    notification1 = create(:notification, :read, user: user)
    notification2 = create(:notification, user: user)

    click_notifications_icon
    click_link "Read"

    expect(page).to have_css(".notification", count: 1)
    within("#notification_#{notification1.id}") do
      click_link "Mark as unread"
    end

    expect(page).to have_css(".notification", count: 0)

    visit notifications_path
    expect(page).to have_css(".notification", count: 2)
    expect(page).to have_content(notification1.notifiable_title)
    expect(page).to have_content(notification2.notifiable_title)
  end

  scenario "Bell" do
    create(:notification, user: user)
    visit root_path

    within("#notifications") do
      expect(page).to have_css(".unread-notifications")
    end

    click_notifications_icon
    first(".notification a").click

    within("#notifications") do
      expect(page).not_to have_css(".unread-notifications")
    end
  end

  scenario "No notifications" do
    click_notifications_icon
    expect(page).to have_content "You don't have new notifications."
  end

  scenario "User not logged in" do
    logout
    visit root_path

    expect(page).not_to have_css("#notifications")
  end

  scenario "Notification's notifiable model no longer includes Notifiable module" do
    create(:notification, :for_poll_question, user: user)

    click_notifications_icon
    expect(page).to have_content("This resource is not available anymore.", count: 1)
  end

  context "Admin Notifications" do
    let(:admin_notification) do
      create(:admin_notification, title: "Notification title",
                                  body: "Notification body",
                                  link: "https://www.external.link.dev/",
                                  segment_recipient: "all_users")
    end

    let!(:notification) do
      create(:notification, user: user, notifiable: admin_notification)
    end

    before do
      login_as user
    end

    scenario "With external link" do
      visit notifications_path
      expect(page).to have_content("Notification title")
      expect(page).to have_content("Notification body")

      first("#notification_#{notification.id} a").click
      expect(page.current_url).to eq("https://www.external.link.dev/")
    end

    scenario "With internal link" do
      admin_notification.update!(link: "/stats")

      visit notifications_path
      expect(page).to have_content("Notification title")
      expect(page).to have_content("Notification body")

      first("#notification_#{notification.id} a").click
      expect(page).to have_current_path("/stats")
    end

    scenario "Without a link" do
      admin_notification.update!(link: "/stats")

      visit notifications_path
      expect(page).to have_content("Notification title")
      expect(page).to have_content("Notification body")
      expect(page).not_to have_link(notification_path(notification), visible: :all)
    end
  end

  describe "#send_pending", :delay_jobs do
    let!(:user1) { create(:user) }
    let!(:user2) { create(:user) }
    let!(:user3) { create(:user) }
    let!(:proposal_notification) { create(:proposal_notification) }

    before do
      create(:notification, notifiable: proposal_notification, user: user1)
      create(:notification, notifiable: proposal_notification, user: user2)
      create(:notification, notifiable: proposal_notification, user: user3)
      reset_mailer
    end

    it "sends pending proposal notifications" do
      Setting["org_name"] = "CONSUL"
      Delayed::Worker.delay_jobs = false
      Notification.send_pending

      email = open_last_email
      expect(email).to have_subject("Proposal notifications in CONSUL")
    end

    it "sends emails in batches" do
      Notification.send_pending

      expect(Delayed::Job.count).to eq(3)
    end

    it "sends batches in time intervals" do
      allow(Notification).to receive(:batch_size).and_return(1)
      allow(Notification).to receive(:batch_interval).and_return(1.second)
      allow(Notification).to receive(:first_batch_run_at).and_return(Time.current)

      remove_users_without_pending_notifications

      Notification.send_pending

      now = Notification.first_batch_run_at

      first_batch_run_at  = now.change(usec: 0)
      second_batch_run_at = (now + 1.second).change(usec: 0)
      third_batch_run_at  = (now + 2.seconds).change(usec: 0)

      expect(Delayed::Job.count).to eq(3)
      expect(Delayed::Job.first.run_at.change(usec: 0)).to eq(first_batch_run_at)
      expect(Delayed::Job.second.run_at.change(usec: 0)).to eq(second_batch_run_at)
      expect(Delayed::Job.third.run_at.change(usec: 0)).to eq(third_batch_run_at)
    end
  end

  def remove_users_without_pending_notifications
    users_without_notifications.each(&:destroy)
  end

  def users_without_notifications
    User.all.select do |user|
      user.notifications.not_emailed.where(notifiable_type: "ProposalNotification").blank?
    end
  end
end