# frozen_string_literal: true

require 'rails_helper'

describe GroupUser do

  it 'correctly sets notification level' do
    moderator = Fabricate(:moderator)

    Group.refresh_automatic_groups!(:moderators)
    gu = GroupUser.find_by(user_id: moderator.id, group_id: Group::AUTO_GROUPS[:moderators])

    expect(gu.notification_level).to eq(NotificationLevels.all[:tracking])

    group = Group.create!(name: 'bob')
    group.add(moderator)
    group.save

    gu = GroupUser.find_by(user_id: moderator.id, group_id: group.id)
    expect(gu.notification_level).to eq(NotificationLevels.all[:watching])

    group.remove(moderator)
    group.save

    group.default_notification_level = 1
    group.save

    group.add(moderator)
    group.save

    gu = GroupUser.find_by(user_id: moderator.id, group_id: group.id)
    expect(gu.notification_level).to eq(NotificationLevels.all[:regular])
  end

  describe "default category notifications" do
    let(:group) { Fabricate(:group) }
    let(:user) { Fabricate(:user) }
    let(:category1) { Fabricate(:category) }
    let(:category2) { Fabricate(:category) }
    let(:category3) { Fabricate(:category) }
    let(:category4) { Fabricate(:category) }
    let(:category5) { Fabricate(:category) }

    def levels
      CategoryUser.notification_levels
    end

    it "doesn't change anything with no configured defaults" do
      expect { group.add(user) }.to_not change { CategoryUser.count }
    end

    it "adds new category notifications" do
      group.muted_category_ids = [category1.id]
      group.regular_category_ids = [category2.id]
      group.tracking_category_ids = [category3.id]
      group.watching_category_ids = [category4.id]
      group.watching_first_post_category_ids = [category5.id]
      group.save!
      expect { group.add(user) }.to change { CategoryUser.count }.by(5)
      h = CategoryUser.notification_levels_for(Guardian.new(user))
      expect(h[category1.id]).to eq(levels[:muted])
      expect(h[category2.id]).to eq(levels[:regular])
      expect(h[category3.id]).to eq(levels[:tracking])
      expect(h[category4.id]).to eq(levels[:watching])
      expect(h[category5.id]).to eq(levels[:watching_first_post])
    end

    it "only upgrades notifications" do
      CategoryUser.create!(user: user, category_id: category1.id, notification_level: levels[:muted])
      CategoryUser.create!(user: user, category_id: category2.id, notification_level: levels[:tracking])
      CategoryUser.create!(user: user, category_id: category3.id, notification_level: levels[:watching_first_post])
      CategoryUser.create!(user: user, category_id: category4.id, notification_level: levels[:watching])
      group.regular_category_ids = [category1.id]
      group.watching_first_post_category_ids = [category2.id, category3.id, category4.id]
      group.save!
      group.add(user)
      h = CategoryUser.notification_levels_for(Guardian.new(user))
      expect(h[category1.id]).to eq(levels[:regular])
      expect(h[category2.id]).to eq(levels[:watching_first_post])
      expect(h[category3.id]).to eq(levels[:watching_first_post])
      expect(h[category4.id]).to eq(levels[:watching])
    end

    it "merges notifications" do
      CategoryUser.create!(user: user, category_id: category1.id, notification_level: CategoryUser.notification_levels[:tracking])
      CategoryUser.create!(user: user, category_id: category2.id, notification_level: CategoryUser.notification_levels[:watching])
      CategoryUser.create!(user: user, category_id: category4.id, notification_level: CategoryUser.notification_levels[:watching_first_post])
      group.muted_category_ids = [category3.id]
      group.tracking_category_ids = [category4.id]
      group.save!
      group.add(user)
      h = CategoryUser.notification_levels_for(Guardian.new(user))
      expect(h[category1.id]).to eq(levels[:tracking])
      expect(h[category2.id]).to eq(levels[:watching])
      expect(h[category3.id]).to eq(levels[:muted])
      expect(h[category4.id]).to eq(levels[:watching_first_post])
    end
  end

  describe "default tag notifications" do
    let(:group) { Fabricate(:group) }
    let(:user) { Fabricate(:user) }
    let(:tag1) { Fabricate(:tag) }
    let(:tag2) { Fabricate(:tag) }
    let(:tag3) { Fabricate(:tag) }
    let(:tag4) { Fabricate(:tag) }
    let(:tag5) { Fabricate(:tag) }
    let(:synonym1) { Fabricate(:tag, target_tag: tag1) }

    def levels
      TagUser.notification_levels
    end

    it "doesn't change anything with no configured defaults" do
      expect { group.add(user) }.to_not change { TagUser.count }
    end

    it "adds new tag notifications" do
      group.muted_tags = [synonym1.name]
      group.regular_tags = [tag2.name]
      group.tracking_tags = [tag3.name]
      group.watching_tags = [tag4.name]
      group.watching_first_post_tags = [tag5.name]
      group.save!
      expect { group.add(user) }.to change { TagUser.count }.by(5)
      expect(TagUser.lookup(user, :muted).pluck(:tag_id)).to eq([tag1.id])
      expect(TagUser.lookup(user, :regular).pluck(:tag_id)).to eq([tag2.id])
      expect(TagUser.lookup(user, :tracking).pluck(:tag_id)).to eq([tag3.id])
      expect(TagUser.lookup(user, :watching).pluck(:tag_id)).to eq([tag4.id])
      expect(TagUser.lookup(user, :watching_first_post).pluck(:tag_id)).to eq([tag5.id])
    end

    it "only upgrades notifications" do
      TagUser.create!(user: user, tag_id: tag1.id, notification_level: levels[:muted])
      TagUser.create!(user: user, tag_id: tag2.id, notification_level: levels[:tracking])
      TagUser.create!(user: user, tag_id: tag3.id, notification_level: levels[:watching_first_post])
      TagUser.create!(user: user, tag_id: tag4.id, notification_level: levels[:watching])
      group.regular_tags = [tag1.name]
      group.watching_first_post_tags = [tag2.name, tag3.name, tag4.name]
      group.save!
      group.add(user)
      expect(TagUser.lookup(user, :muted).pluck(:tag_id)).to be_empty
      expect(TagUser.lookup(user, :regular).pluck(:tag_id)).to eq([tag1.id])
      expect(TagUser.lookup(user, :tracking).pluck(:tag_id)).to be_empty
      expect(TagUser.lookup(user, :watching).pluck(:tag_id)).to eq([tag4.id])
      expect(TagUser.lookup(user, :watching_first_post).pluck(:tag_id)).to contain_exactly(tag2.id, tag3.id)
    end

    it "merges notifications" do
      TagUser.create!(user: user, tag_id: tag1.id, notification_level: levels[:tracking])
      TagUser.create!(user: user, tag_id: tag2.id, notification_level: levels[:watching])
      TagUser.create!(user: user, tag_id: tag4.id, notification_level: levels[:watching_first_post])
      group.muted_tags = [tag3.name]
      group.tracking_tags = [tag2.name]
      group.save!
      group.add(user)
      expect(TagUser.lookup(user, :muted).pluck(:tag_id)).to eq([tag3.id])
      expect(TagUser.lookup(user, :tracking).pluck(:tag_id)).to eq([tag1.id])
      expect(TagUser.lookup(user, :watching).pluck(:tag_id)).to eq([tag2.id])
      expect(TagUser.lookup(user, :watching_first_post).pluck(:tag_id)).to eq([tag4.id])
    end
  end

  describe '#ensure_consistency!' do
    fab!(:group) { Fabricate(:group) }
    fab!(:group_2) { Fabricate(:group) }

    fab!(:pm_post) { Fabricate(:private_message_post) }

    fab!(:pm_topic) do
      pm_post.topic.tap { |t| t.allowed_groups << group }
    end

    fab!(:user) do
      Fabricate(:user, last_seen_at: Time.zone.now).tap do |u|
        group.add(u)
        group_2.add(u)

        TopicUser.change(u.id, pm_topic.id,
          notification_level: TopicUser.notification_levels[:tracking],
          last_read_post_number: pm_post.post_number
        )
      end
    end

    # User that is not tracking topic
    fab!(:user_2) do
      Fabricate(:user, last_seen_at: Time.zone.now).tap do |u|
        group.add(u)

        TopicUser.change(u.id, pm_topic.id,
          notification_level: TopicUser.notification_levels[:regular],
          last_read_post_number: pm_post.post_number
        )
      end
    end

    # User that has not been seen
    fab!(:user_3) do
      Fabricate(:user).tap do |u|
        group.add(u)

        TopicUser.change(u.id, pm_topic.id,
          notification_level: TopicUser.notification_levels[:tracking],
          last_read_post_number: pm_post.post_number
        )
      end
    end

    it 'updates first unread pm timestamp correctly' do
      freeze_time 10.minutes.from_now

      post = create_post(
        user: pm_topic.user,
        topic_id: pm_topic.id
      )

      expect { GroupUser.ensure_consistency! }
        .to_not change { group.group_users.find_by(user_id: user_3.id).first_unread_pm_at }

      expect(post.topic.updated_at).to_not eq_time(10.minutes.ago)
      expect(group.group_users.find_by(user_id: user.id).first_unread_pm_at).to eq_time(post.topic.updated_at)
      expect(group_2.group_users.find_by(user_id: user.id).first_unread_pm_at).to eq_time(10.minutes.ago)
      expect(group.group_users.find_by(user_id: user_2.id).first_unread_pm_at).to eq_time(10.minutes.ago)
    end
  end
end