discourse/spec/models/post_action_spec.rb

# frozen_string_literal: true

RSpec.describe PostAction do
  it { is_expected.to rate_limit }

  fab!(:moderator) { Fabricate(:moderator) }
  fab!(:codinghorror) { Fabricate(:coding_horror) }
  fab!(:eviltrout) { Fabricate(:evil_trout) }
  fab!(:admin) { Fabricate(:admin) }
  fab!(:post) { Fabricate(:post) }
  fab!(:second_post) { Fabricate(:post, topic: post.topic) }

  def value_for(user_id, dt)
    GivenDailyLike.find_for(user_id, dt).pluck(:likes_given)[0] || 0
  end

  it "disallows the same action from happening twice" do
    PostAction.create(user: eviltrout, post: post, post_action_type_id: PostActionType.types[:like])
    pa =
      PostAction.new(user: eviltrout, post: post, post_action_type_id: PostActionType.types[:like])
    expect(pa).not_to be_valid
  end

  describe "messaging" do
    it "notifies moderators (integration test)" do
      post = create_post
      mod = moderator
      Group.refresh_automatic_groups!

      result =
        PostActionCreator.notify_moderators(codinghorror, post, "this is my special long message")

      posts =
        Post
          .joins(:topic)
          .select("posts.id, topics.subtype, posts.topic_id")
          .where("topics.archetype" => Archetype.private_message)
          .to_a

      expect(posts.count).to eq(1)
      expect(result.post_action.related_post_id).to eq(posts[0].id.to_i)
      expect(result.reviewable_score.meta_topic_id).to eq(posts[0].topic_id)
      expect(posts[0].subtype).to eq(TopicSubtype.notify_moderators)

      topic = posts[0].topic

      # Moderators should be invited to the private topic, otherwise they're not permitted to see it
      topic_user_ids = topic.reload.topic_users.map { |x| x.user_id }
      expect(topic_user_ids).to include(codinghorror.id)
      expect(topic_user_ids).to include(mod.id)

      expect(topic.topic_users.where(user_id: mod.id).pluck_first(:notification_level)).to eq(
        TopicUser.notification_levels[:tracking],
      )

      expect(
        topic.topic_users.where(user_id: codinghorror.id).pluck_first(:notification_level),
      ).to eq(TopicUser.notification_levels[:watching])

      # reply to PM should not clear flag
      PostCreator.new(
        mod,
        topic_id: posts[0].topic_id,
        raw: "This is my test reply to the user, it should clear flags",
      ).create
      result.post_action.reload
      expect(result.post_action.deleted_at).to eq(nil)

      # Acting on the flag should not post an automated status message (since a moderator already replied)
      expect(topic.posts.count).to eq(2)

      result.reviewable.perform(admin, :agree_and_keep)
      topic.reload
      expect(topic.posts.count).to eq(2)

      # Clearing the flags should not post an automated status message
      result = PostActionCreator.notify_moderators(mod, post, "another special message")
      result.reviewable.perform(admin, :disagree)
      topic.reload
      expect(topic.posts.count).to eq(2)

      # Acting on the flag should post an automated status message
      another_post = create_post
      result = PostActionCreator.notify_moderators(codinghorror, another_post, "foobar")
      topic = result.post_action.related_post.topic

      expect(topic.posts.count).to eq(1)
      result.reviewable.perform(admin, :agree_and_keep)

      topic.reload
      expect(topic.posts.count).to eq(2)
      expect(topic.posts.last.post_type).to eq(Post.types[:moderator_action])
      expect(topic.message_archived?(mod)).to eq(true)
    end

    context "with category group moderators" do
      fab!(:group_user) { Fabricate(:group_user) }
      let(:group) { group_user.group }

      before do
        SiteSetting.enable_category_group_moderation = true
        group.update!(messageable_level: Group::ALIAS_LEVELS[:nobody])
        post.topic.category.update!(reviewable_by_group_id: group.id)
      end

      it "notifies via pm" do
        result =
          PostActionCreator.notify_moderators(codinghorror, post, "this is my special long message")

        readable_by_groups = result.reviewable_score.meta_topic.topic_allowed_groups.map(&:group_id)
        expect(readable_by_groups).to include(group.id)
      end
    end
  end

  describe "update_counters" do
    it "properly updates topic counters" do
      freeze_time Date.today
      # we need this to test it
      TopicUser.change(codinghorror, post.topic, posted: true)

      expect(value_for(moderator.id, Date.today)).to eq(0)

      PostActionCreator.like(moderator, post)
      PostActionCreator.like(codinghorror, second_post)

      post.topic.reload
      expect(post.topic.like_count).to eq(2)

      expect(value_for(moderator.id, Date.today)).to eq(1)

      tu = TopicUser.get(post.topic, codinghorror)
      expect(tu.liked).to be true
    end
  end

  describe "undo/redo repeatedly" do
    it "doesn't create a second action for the same user/type" do
      PostActionCreator.like(codinghorror, post)
      PostActionDestroyer.destroy(codinghorror, post, :like)
      PostActionCreator.like(codinghorror, post)
      expect(PostAction.where(post: post).with_deleted.count).to eq(1)
      PostActionDestroyer.destroy(codinghorror, post, :like)

      # Check that we don't lose consistency into negatives
      expect(post.reload.like_count).to eq(0)
    end
  end

  describe "when a user likes something" do
    before { PostActionNotifier.enable }

    it "should generate and remove notifications correctly" do
      PostActionCreator.like(codinghorror, post)

      expect(Notification.count).to eq(1)

      notification = Notification.last

      expect(notification.user_id).to eq(post.user_id)
      expect(notification.notification_type).to eq(Notification.types[:liked])

      PostActionDestroyer.destroy(codinghorror, post, :like)

      expect(Notification.count).to eq(0)

      PostActionCreator.like(codinghorror, post)

      expect(Notification.count).to eq(1)

      notification = Notification.last

      expect(notification.user_id).to eq(post.user_id)
      expect(notification.notification_type).to eq(Notification.types[:liked])
    end

    it "should not notify when never is selected" do
      post.user.user_option.update!(
        like_notification_frequency: UserOption.like_notification_frequency_type[:never],
      )

      expect do PostActionCreator.like(codinghorror, post) end.to_not change { Notification.count }
    end

    it "notifies on likes correctly" do
      SiteSetting.post_undo_action_window_mins = 120
      PostActionCreator.like(eviltrout, post)
      PostActionCreator.like(admin, post)

      # one like
      expect(Notification.where(post_number: 1, topic_id: post.topic_id).count).to eq(1)

      post.user.user_option.update!(
        like_notification_frequency: UserOption.like_notification_frequency_type[:always],
      )

      admin2 = Fabricate(:admin)

      # Travel 1 hour in time to test that order post_actions by `created_at`
      freeze_time 1.hour.from_now

      expect do PostActionCreator.like(admin2, post) end.to_not change { Notification.count }

      # adds info to the notification
      notification = Notification.find_by(post_number: 1, topic_id: post.topic_id)

      expect(notification.data_hash["count"].to_i).to eq(2)
      expect(notification.data_hash["username2"]).to eq(eviltrout.username)

      # this is a tricky thing ... removing a like should fix up the notifications
      PostActionDestroyer.destroy(eviltrout, post, :like)

      # rebuilds the missing notification
      expect(Notification.where(post_number: 1, topic_id: post.topic_id).count).to eq(1)

      notification = Notification.find_by(post_number: 1, topic_id: post.topic_id)

      expect(notification.data_hash["count"]).to eq(2)
      expect(notification.data_hash["username"]).to eq(admin2.username)
      expect(notification.data_hash["username2"]).to eq(admin.username)

      post.user.user_option.update!(
        like_notification_frequency:
          UserOption.like_notification_frequency_type[:first_time_and_daily],
      )

      # this gets skipped
      admin3 = Fabricate(:admin)
      PostActionCreator.like(admin3, post)

      freeze_time 2.days.from_now

      admin4 = Fabricate(:admin)
      PostActionCreator.like(admin4, post)

      # first happened within the same day, no need to notify
      expect(Notification.where(post_number: 1, topic_id: post.topic_id).count).to eq(2)
    end

    describe "likes consolidation" do
      fab!(:liker) { Fabricate(:user) }
      fab!(:liker2) { Fabricate(:user) }
      fab!(:likee) { Fabricate(:user) }

      it "can be disabled" do
        SiteSetting.notification_consolidation_threshold = 0

        expect do PostActionCreator.like(liker, Fabricate(:post, user: likee)) end.to change {
          likee.reload.notifications.count
        }.by(1)

        SiteSetting.notification_consolidation_threshold = 1

        expect do PostActionCreator.like(liker, Fabricate(:post, user: likee)) end.to_not change {
          likee.reload.notifications.count
        }
      end

      describe "frequency first_time_and_daily" do
        before do
          likee.user_option.update!(
            like_notification_frequency:
              UserOption.like_notification_frequency_type[:first_time_and_daily],
          )
        end

        it "should consolidate likes notification when the threshold is reached" do
          SiteSetting.notification_consolidation_threshold = 2

          expect do
            3.times { PostActionCreator.like(liker, Fabricate(:post, user: likee)) }
          end.to change { likee.reload.notifications.count }.by(1)

          notification = likee.notifications.last

          expect(notification.notification_type).to eq(Notification.types[:liked_consolidated])

          data = JSON.parse(notification.data)

          expect(data["username"]).to eq(liker.username)
          expect(data["display_username"]).to eq(liker.username)
          expect(data["count"]).to eq(3)

          notification.update!(read: true)

          expect do
            2.times { PostActionCreator.like(liker, Fabricate(:post, user: likee)) }
          end.to_not change { likee.reload.notifications.count }

          data = JSON.parse(notification.reload.data)

          expect(notification.read).to eq(false)
          expect(data["count"]).to eq(5)

          # Like from a different user shouldn't be consolidated
          expect do
            PostActionCreator.like(Fabricate(:user), Fabricate(:post, user: likee))
          end.to change { likee.reload.notifications.count }.by(1)

          notification = likee.notifications.last

          expect(notification.notification_type).to eq(Notification.types[:liked])

          freeze_time((SiteSetting.likes_notification_consolidation_window_mins.minutes + 1).since)

          expect do PostActionCreator.like(liker, Fabricate(:post, user: likee)) end.to change {
            likee.reload.notifications.count
          }.by(1)

          notification = likee.notifications.last

          expect(notification.notification_type).to eq(Notification.types[:liked])
        end
      end

      describe "frequency always" do
        before do
          likee.user_option.update!(
            like_notification_frequency: UserOption.like_notification_frequency_type[:always],
          )
        end

        it "should consolidate liked notifications when threshold is reached" do
          SiteSetting.notification_consolidation_threshold = 2

          post = Fabricate(:post, user: likee)

          expect do
            [liker2, liker].each { |user| PostActionCreator.like(user, post) }
          end.to change { likee.reload.notifications.count }.by(1)

          notification = likee.notifications.last
          data_hash = notification.data_hash

          expect(data_hash["original_username"]).to eq(liker.username)
          expect(data_hash["username2"]).to eq(liker2.username)
          expect(data_hash["count"].to_i).to eq(2)

          expect do
            2.times { PostActionCreator.like(liker, Fabricate(:post, user: likee)) }
          end.to change { likee.reload.notifications.count }.by(2)

          expect(likee.notifications.pluck(:notification_type).uniq).to contain_exactly(
            Notification.types[:liked],
          )

          expect do PostActionCreator.like(liker, Fabricate(:post, user: likee)) end.to change {
            likee.reload.notifications.count
          }.by(-1)

          notification = likee.notifications.last

          expect(notification.notification_type).to eq(Notification.types[:liked_consolidated])

          expect(notification.data_hash["count"].to_i).to eq(3)
          expect(notification.data_hash["username"]).to eq(liker.username)
        end
      end
    end

    it "should not generate a notification if liker has been muted" do
      mutee = Fabricate(:user)
      MutedUser.create!(user_id: post.user.id, muted_user_id: mutee.id)

      expect do PostActionCreator.like(mutee, post) end.to_not change { Notification.count }
    end

    it "should not generate a notification if liker has the topic muted" do
      post = Fabricate(:post, user: eviltrout)

      TopicUser.create!(
        topic: post.topic,
        user: eviltrout,
        notification_level: TopicUser.notification_levels[:muted],
      )

      expect do PostActionCreator.like(codinghorror, post) end.to_not change { Notification.count }
    end

    it "should generate a notification if liker is an admin irregardless of \
      muting" do
      MutedUser.create!(user_id: post.user.id, muted_user_id: admin.id)

      expect do PostActionCreator.like(admin, post) end.to change { Notification.count }.by(1)

      notification = Notification.last

      expect(notification.user_id).to eq(post.user_id)
      expect(notification.notification_type).to eq(Notification.types[:liked])
    end

    it "should not increase topic like count when liking a whisper" do
      SiteSetting.whispers_allowed_groups = "#{Group::AUTO_GROUPS[:staff]}"
      post.revise(admin, post_type: Post.types[:whisper])

      PostActionCreator.like(admin, post)

      expect(post.reload.like_count).to eq(1)
      expect(post.topic.like_count).to eq(0)
    end

    it "should increase the `like_count` and `like_score` when a user likes something" do
      freeze_time Date.today

      PostActionCreator.like(codinghorror, post)
      post.reload
      expect(post.like_count).to eq(1)
      expect(post.like_score).to eq(1)
      post.topic.reload
      expect(post.topic.like_count).to eq(1)
      expect(value_for(codinghorror.id, Date.today)).to eq(1)

      # When a staff member likes it
      PostActionCreator.like(moderator, post)
      post.reload
      expect(post.like_count).to eq(2)
      expect(post.like_score).to eq(4)
      expect(post.topic.like_count).to eq(2)

      # Removing likes
      PostActionDestroyer.destroy(codinghorror, post, :like)
      post.reload
      expect(post.like_count).to eq(1)
      expect(post.like_score).to eq(3)
      expect(post.topic.like_count).to eq(1)
      expect(value_for(codinghorror.id, Date.today)).to eq(0)

      PostActionDestroyer.destroy(moderator, post, :like)
      post.reload
      expect(post.like_count).to eq(0)
      expect(post.like_score).to eq(0)
      expect(post.topic.like_count).to eq(0)
    end

    it "shouldn't change given_likes unless likes are given or removed" do
      freeze_time(Time.zone.now)

      PostActionCreator.like(codinghorror, post)
      expect(value_for(codinghorror.id, Date.today)).to eq(1)

      PostActionType.types.each do |type_name, type_id|
        post = Fabricate(:post)

        PostActionCreator.create(codinghorror, post, type_name)
        actual_count = value_for(codinghorror.id, Date.today)
        expected_count = type_name == :like ? 2 : 1
        expect(actual_count).to eq(expected_count),
        "Expected likes_given to be #{expected_count} when adding '#{type_name}', but got #{actual_count}"

        PostActionDestroyer.new(codinghorror, post, type_id).perform
        actual_count = value_for(codinghorror.id, Date.today)
        expect(actual_count).to eq(1),
        "Expected likes_given to be 1 when removing '#{type_name}', but got #{actual_count}"
      end
    end
  end

  describe "flagging" do
    it "does not allow you to flag stuff twice, even if the reason is different" do
      expect(PostActionCreator.spam(eviltrout, post)).to be_success
      expect(PostActionCreator.off_topic(eviltrout, post)).to be_failed
    end

    it "allows you to flag stuff again if your previous flag was removed" do
      PostActionCreator.spam(eviltrout, post)
      PostActionDestroyer.destroy(eviltrout, post, :spam)
      expect(PostActionCreator.spam(eviltrout, post)).to be_success
    end

    it "should update counts when you clear flags" do
      reviewable = PostActionCreator.spam(eviltrout, post).reviewable

      expect(post.reload.spam_count).to eq(1)

      reviewable.perform(Discourse.system_user, :disagree)

      expect(post.reload.spam_count).to eq(0)
    end

    it "will not allow regular users to auto hide staff posts" do
      mod = Fabricate(:moderator)
      post = Fabricate(:post, user: mod)

      Reviewable.set_priorities(high: 2.0)
      SiteSetting.hide_post_sensitivity = Reviewable.sensitivities[:low]
      Discourse.stubs(:site_contact_user).returns(admin)

      PostActionCreator.spam(eviltrout, post)
      PostActionCreator.spam(Fabricate(:walter_white), post)

      expect(post.hidden).to eq(false)
      expect(post.hidden_at).to be_blank
    end

    it "allows staff users to auto hide staff posts" do
      mod = Fabricate(:moderator)
      post = Fabricate(:post, user: mod)

      Reviewable.set_priorities(high: 8.0)
      SiteSetting.hide_post_sensitivity = Reviewable.sensitivities[:low]
      Discourse.stubs(:site_contact_user).returns(admin)

      PostActionCreator.spam(eviltrout, post)
      PostActionCreator.spam(Fabricate(:admin), post)

      post.reload

      expect(post.hidden).to eq(true)
      expect(post.hidden_at).to be_present
    end

    it "will not trigger auto hide on like" do
      mod = Fabricate(:moderator)
      post = Fabricate(:post, user: mod)

      result = PostActionCreator.spam(eviltrout, post)
      result.reviewable.update!(score: 1000.0)
      PostActionCreator.like(Fabricate(:admin), post)

      post.reload

      expect(post.hidden).to eq(false)
    end

    it "should follow the rules for automatic hiding workflow" do
      post = create_post
      walterwhite = Fabricate(:walter_white)

      Reviewable.set_priorities(high: 3.0)
      SiteSetting.hide_post_sensitivity = Reviewable.sensitivities[:low]
      Discourse.stubs(:site_contact_user).returns(admin)

      PostActionCreator.spam(eviltrout, post)
      PostActionCreator.spam(walterwhite, post)

      job_args = Jobs::SendSystemMessage.jobs.last["args"].first
      expect(job_args["user_id"]).to eq(post.user.id)
      expect(job_args["message_type"]).to eq("post_hidden")

      post.reload

      expect(post.hidden).to eq(true)
      expect(post.hidden_at).to be_present
      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flag_threshold_reached])
      expect(post.topic.visible).to eq(false)

      post.revise(post.user, raw: post.raw + " ha I edited it ")

      post.reload

      expect(post.hidden).to eq(false)
      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flag_threshold_reached]) # keep most recent reason
      expect(post.hidden_at).to be_present # keep the most recent hidden_at time
      expect(post.topic.visible).to eq(true)

      PostActionCreator.spam(eviltrout, post)
      PostActionCreator.off_topic(walterwhite, post)

      job_args = Jobs::SendSystemMessage.jobs.last["args"].first
      expect(job_args["user_id"]).to eq(post.user.id)
      expect(job_args["message_type"]).to eq("post_hidden_again")

      post.reload

      expect(post.hidden).to eq(true)
      expect(post.hidden_at).to be_present
      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flag_threshold_reached_again])
      expect(post.topic.visible).to eq(false)

      post.revise(post.user, raw: post.raw + " ha I edited it again ")

      post.reload

      expect(post.hidden).to eq(true)
      expect(post.hidden_at).to be_present
      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flag_threshold_reached_again])
      expect(post.topic.visible).to eq(false)
    end

    it "doesn't fail when post has nil user" do
      post = create_post
      post.update!(user: nil)

      PostActionCreator.new(moderator, post, PostActionType.types[:spam], take_action: true).perform
      post.reload
      expect(post.hidden).to eq(true)
    end
    it "hide tl0 posts that are flagged as spam by a tl3 user" do
      newuser = Fabricate(:newuser)
      post = create_post(user: newuser)

      Discourse.stubs(:site_contact_user).returns(admin)

      PostActionCreator.spam(Fabricate(:leader), post)

      post.reload

      expect(post.hidden).to eq(true)
      expect(post.hidden_at).to be_present
      expect(post.hidden_reason_id).to eq(Post.hidden_reasons[:flagged_by_tl3_user])
    end

    it "can flag the topic instead of a post" do
      post1 = create_post
      create_post(topic: post1.topic)
      result =
        PostActionCreator.new(
          Fabricate(:user),
          post1,
          PostActionType.types[:spam],
          flag_topic: true,
        ).perform
      expect(result.post_action.targets_topic).to eq(true)
      expect(result.reviewable.payload["targets_topic"]).to eq(true)
    end

    it "will flag the first post if you flag a topic but there is only one post in the topic" do
      post = create_post
      result =
        PostActionCreator.new(
          Fabricate(:user),
          post,
          PostActionType.types[:spam],
          flag_topic: true,
        ).perform
      expect(result.post_action.targets_topic).to eq(false)
      expect(result.post_action.post_id).to eq(post.id)
      expect(result.reviewable.payload["targets_topic"]).to eq(false)
    end

    it "will unhide the post when a moderator undoes the flag on which s/he took action" do
      Discourse.stubs(:site_contact_user).returns(admin)

      post = create_post
      PostActionCreator.new(moderator, post, PostActionType.types[:spam], take_action: true).perform

      post.reload
      expect(post.hidden).to eq(true)

      PostActionDestroyer.destroy(moderator, post, :spam)

      post.reload
      expect(post.hidden).to eq(false)
    end

    context "with topic auto closing" do
      fab!(:topic) { Fabricate(:topic) }
      let(:post1) { create_post(topic: topic) }
      let(:post2) { create_post(topic: topic) }
      let(:post3) { create_post(topic: topic) }

      fab!(:flagger1) { Fabricate(:user) }
      fab!(:flagger2) { Fabricate(:user) }

      before do
        SiteSetting.hide_post_sensitivity = Reviewable.sensitivities[:disabled]
        Reviewable.set_priorities(high: 4.5)
        SiteSetting.auto_close_topic_sensitivity = Reviewable.sensitivities[:low]
        SiteSetting.num_flaggers_to_close_topic = 2
        SiteSetting.num_hours_to_close_topic = 1
      end

      it "will automatically pause a topic due to large community flagging" do
        freeze_time

        # reaching `num_flaggers_to_close_topic` isn't enough
        [flagger1, flagger2].each { |flagger| PostActionCreator.inappropriate(flagger, post1) }

        expect(topic.reload.closed).to eq(false)

        # clean up
        PostAction.where(post: post1).delete_all

        # reaching `num_flags_to_close_topic` isn't enough
        [post1, post2, post3].each { |post| PostActionCreator.inappropriate(flagger1, post) }

        expect(topic.reload.closed).to eq(false)

        # clean up
        PostAction.where(post: [post1, post2, post3]).delete_all

        # reaching both should close the topic
        [flagger1, flagger2].each do |flagger|
          [post1, post2, post3].each { |post| PostActionCreator.inappropriate(flagger, post) }
        end

        expect(topic.reload.closed).to eq(true)

        topic_status_update = TopicTimer.last

        expect(topic_status_update.topic).to eq(topic)
        expect(topic_status_update.execute_at).to eq_time(1.hour.from_now)
        expect(topic_status_update.status_type).to eq(TopicTimer.types[:open])
      end

      context "when on a staff post" do
        fab!(:staff_user) { Fabricate(:user, moderator: true) }
        fab!(:topic) { Fabricate(:topic, user: staff_user) }

        it "will not close topics opened by staff" do
          [flagger1, flagger2].each do |flagger|
            [post1, post2, post3].each { |post| PostActionCreator.inappropriate(flagger, post) }
          end

          expect(topic.reload.closed).to eq(false)
        end
      end

      it "will keep the topic in closed status until the community flags are handled" do
        freeze_time

        SiteSetting.num_flaggers_to_close_topic = 1
        Reviewable.set_priorities(high: 0.5)
        SiteSetting.auto_close_topic_sensitivity = Reviewable.sensitivities[:low]

        post = Fabricate(:post, topic: topic)
        PostActionCreator.spam(flagger1, post)
        expect(topic.reload.closed).to eq(true)

        timer = TopicTimer.last
        expect(timer.execute_at).to eq_time(1.hour.from_now)

        freeze_time timer.execute_at

        Jobs::OpenTopic.new.execute(topic_timer_id: timer.id)

        expect(topic.reload.closed).to eq(true)
        expect(timer.reload.execute_at).to eq_time(1.hour.from_now)

        freeze_time timer.execute_at
        SiteSetting.num_flaggers_to_close_topic = 10
        Reviewable.set_priorities(high: 10.0)
        SiteSetting.auto_close_topic_sensitivity = Reviewable.sensitivities[:low]

        Jobs::ToggleTopicClosed.new.execute(topic_timer_id: timer.id, state: false)

        expect(topic.reload.closed).to eq(false)
      end

      it "will reopen topic after the flags are auto handled" do
        freeze_time
        [flagger1, flagger2].each do |flagger|
          [post1, post2, post3].each { |post| PostActionCreator.inappropriate(flagger, post) }
        end

        expect(topic.reload.closed).to eq(true)

        freeze_time 61.days.from_now
        Jobs::AutoQueueHandler.new.execute({})
        Jobs::ToggleTopicClosed.new.execute(topic_timer_id: TopicTimer.last.id, state: false)

        expect(topic.reload.closed).to eq(false)
      end
    end
  end

  it "prevents user to act twice at the same time" do
    Group.refresh_automatic_groups!
    # flags are already being tested
    all_types_except_flags =
      PostActionType.types.except(*PostActionType.flag_types_without_custom.keys)
    all_types_except_flags.values.each do |action|
      expect(PostActionCreator.new(eviltrout, post, action).perform).to be_success
      expect(PostActionCreator.new(eviltrout, post, action).perform).to be_failed
    end
  end

  describe "messages" do
    it "does not create a message when there is no message" do
      result = PostActionCreator.spam(Discourse.system_user, post)
      expect(result).to be_success
      expect(result.post_action.related_post_id).to be_nil
      expect(result.reviewable_score.meta_topic_id).to be_nil
    end

    %i[notify_moderators notify_user spam].each do |post_action_type|
      it "creates a message for #{post_action_type}" do
        result =
          PostActionCreator.new(
            Discourse.system_user,
            post,
            PostActionType.types[post_action_type],
            message: "WAT",
          ).perform
        expect(result).to be_success
        expect(result.post_action.related_post_id).to be_present
      end
    end

    it "should raise the right errors when it fails to create a post" do
      user = Fabricate(:user)
      UserSilencer.new(user, Discourse.system_user).silence

      result = PostActionCreator.notify_moderators(user, post, "testing")
      expect(result).to be_failed
    end

    it "should succeed even with low max title length" do
      SiteSetting.max_topic_title_length = 50
      post.topic.title = "This is a test topic " * 2
      post.topic.save!

      result = PostActionCreator.notify_moderators(Discourse.system_user, post, "WAT")
      expect(result).to be_success
      expect(result.post_action.related_post_id).to be_present
    end
  end

  describe ".lookup_for" do
    it "returns the correct map" do
      user = Fabricate(:user)
      post_action = PostActionCreator.create(user, post, :like).post_action
      map = PostAction.lookup_for(user, [post.topic], post_action.post_action_type_id)

      expect(map).to eq(post.topic_id => [post.post_number])
    end
  end

  describe "#add_moderator_post_if_needed" do
    it "should not add a moderator post when it's disabled" do
      post = create_post

      result = PostActionCreator.create(moderator, post, :spam, message: "WAT")
      topic = result.post_action.related_post.topic
      expect(topic.posts.count).to eq(1)

      SiteSetting.auto_respond_to_flag_actions = false
      result.reviewable.perform(admin, :agree_and_keep)
      expect(topic.reload.posts.count).to eq(1)
    end

    it "should create a notification in the related topic" do
      Jobs.run_immediately!
      user = Fabricate(:user)
      stub_image_size
      result = PostActionCreator.create(user, post, :spam, message: "WAT")
      topic = result.post_action.related_post.topic
      reviewable = result.reviewable
      expect(user.notifications.count).to eq(0)

      SiteSetting.auto_respond_to_flag_actions = true
      reviewable.perform(admin, :agree_and_keep)

      user_notifications = user.notifications
      expect(user_notifications.last.topic).to eq(topic)
    end

    skip "should not add a moderator post when post is flagged via private message" do
      Jobs.run_immediately!
      user = Fabricate(:user)
      result = PostActionCreator.create(user, post, :notify_user, message: "WAT")
      action = result.post_action
      action.reload.related_post.topic
      expect(user.notifications.count).to eq(0)

      SiteSetting.auto_respond_to_flag_actions = true
      result.reviewable.perform(admin, :agree_and_keep)
      expect(user.reload.user_stat.flags_agreed).to eq(0)

      user_notifications = user.notifications
      expect(user_notifications.count).to eq(0)
    end
  end

  describe "rate limiting" do
    def limiter(tl, type)
      user = Fabricate.build(:user)
      user.trust_level = tl
      action = PostAction.new(user: user, post_action_type_id: PostActionType.types[type])
      action.post_action_rate_limiter
    end

    it "should scale up likes limits depending on trust level" do
      expect(limiter(0, :like).max).to eq SiteSetting.max_likes_per_day
      expect(limiter(1, :like).max).to eq SiteSetting.max_likes_per_day
      expect(limiter(2, :like).max).to eq (
           SiteSetting.max_likes_per_day * SiteSetting.tl2_additional_likes_per_day_multiplier
         ).to_i
      expect(limiter(3, :like).max).to eq (
           SiteSetting.max_likes_per_day * SiteSetting.tl3_additional_likes_per_day_multiplier
         ).to_i
      expect(limiter(4, :like).max).to eq (
           SiteSetting.max_likes_per_day * SiteSetting.tl4_additional_likes_per_day_multiplier
         ).to_i

      SiteSetting.tl2_additional_likes_per_day_multiplier = -1
      expect(limiter(2, :like).max).to eq SiteSetting.max_likes_per_day

      SiteSetting.tl2_additional_likes_per_day_multiplier = 0.8
      expect(limiter(2, :like).max).to eq SiteSetting.max_likes_per_day

      SiteSetting.tl2_additional_likes_per_day_multiplier = "bob"
      expect(limiter(2, :like).max).to eq SiteSetting.max_likes_per_day
    end

    it "should scale up flag limits depending on trust level" do
      %i[off_topic inappropriate spam notify_moderators].each do |type|
        SiteSetting.tl2_additional_flags_per_day_multiplier = 1.5

        expect(limiter(0, type).max).to eq SiteSetting.max_flags_per_day
        expect(limiter(1, type).max).to eq SiteSetting.max_flags_per_day
        expect(limiter(2, type).max).to eq (
             SiteSetting.max_flags_per_day * SiteSetting.tl2_additional_flags_per_day_multiplier
           ).to_i
        expect(limiter(3, type).max).to eq (
             SiteSetting.max_flags_per_day * SiteSetting.tl3_additional_flags_per_day_multiplier
           ).to_i
        expect(limiter(4, type).max).to eq (
             SiteSetting.max_flags_per_day * SiteSetting.tl4_additional_flags_per_day_multiplier
           ).to_i

        SiteSetting.tl2_additional_flags_per_day_multiplier = -1
        expect(limiter(2, type).max).to eq SiteSetting.max_flags_per_day

        SiteSetting.tl2_additional_flags_per_day_multiplier = 0.8
        expect(limiter(2, type).max).to eq SiteSetting.max_flags_per_day

        SiteSetting.tl2_additional_flags_per_day_multiplier = "bob"
        expect(limiter(2, type).max).to eq SiteSetting.max_flags_per_day
      end
    end
  end

  describe "#is_flag?" do
    describe "when post action is a flag" do
      it "should return true" do
        PostActionType.notify_flag_types.each do |_type, id|
          post_action = PostAction.new(user: codinghorror, post_action_type_id: id)

          expect(post_action.is_flag?).to eq(true)
        end
      end
    end

    describe "when post action is not a flag" do
      it "should return false" do
        post_action = PostAction.new(user: codinghorror, post_action_type_id: 99)

        expect(post_action.is_flag?).to eq(false)
      end
    end
  end

  describe "triggers Discourse events" do
    it "triggers a flag_created event" do
      event = DiscourseEvent.track(:flag_created) { PostActionCreator.spam(eviltrout, post) }
      expect(event).to be_present
    end

    context "when resolving flags" do
      let(:result) { PostActionCreator.spam(eviltrout, post) }
      let(:post_action) { result.post_action }
      let(:reviewable) { result.reviewable }

      it "creates events for agreed" do
        events = DiscourseEvent.track_events { reviewable.perform(moderator, :agree_and_keep) }

        reviewed_event = events.find { |e| e[:event_name] == :flag_reviewed }
        expect(reviewed_event).to be_present

        event = events.find { |e| e[:event_name] == :flag_agreed }
        expect(event).to be_present
        expect(event[:params]).to eq([post_action])
      end

      it "creates events for disagreed" do
        events = DiscourseEvent.track_events { reviewable.perform(moderator, :disagree) }

        reviewed_event = events.find { |e| e[:event_name] == :flag_reviewed }
        expect(reviewed_event).to be_present

        event = events.find { |e| e[:event_name] == :flag_disagreed }
        expect(event).to be_present
        expect(event[:params]).to eq([post_action])
      end

      it "creates events for ignored" do
        events = DiscourseEvent.track_events { reviewable.perform(moderator, :ignore) }

        reviewed_event = events.find { |e| e[:event_name] == :flag_reviewed }
        expect(reviewed_event).to be_present

        event = events.find { |e| e[:event_name] == :flag_deferred }
        expect(event).to be_present
        expect(event[:params]).to eq([post_action])
      end
    end
  end
end