require 'test_helper'

class ForumPostTest < ActiveSupport::TestCase
  context "A forum post" do
    setup do
      @user = FactoryBot.create(:user)
      CurrentUser.user = @user
      CurrentUser.ip_addr = "127.0.0.1"
      @topic = FactoryBot.create(:forum_topic)
    end

    teardown do
      CurrentUser.user = nil
      CurrentUser.ip_addr = nil
    end

    context "#votable?" do
      setup do
        @post = FactoryBot.build(:forum_post, :topic_id => @topic.id, :body => "[[aaa]] -> [[bbb]]")
        @tag_alias = FactoryBot.create(:tag_alias, forum_post: @post)
      end

      should "be true for a post associated with a tag alias" do
        assert(@post.votable?)
      end
    end

    context "that mentions a user" do
      context "in a quote block" do
        setup do
          @user2 = FactoryBot.create(:user)
        end

        should "not create a dmail" do
          assert_difference("Dmail.count", 0) do
            FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "[quote]@#{@user2.name}[/quote]")
          end

          assert_difference("Dmail.count", 0) do
            FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "[quote]@#{@user2.name}[/quote] blah [quote]@#{@user2.name}[/quote]")
          end

          assert_difference("Dmail.count", 0) do
            FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "[quote][quote]@#{@user2.name}[/quote][/quote]")
          end

          assert_difference("Dmail.count", 1) do
            FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "[quote]@#{@user2.name}[/quote] @#{@user2.name}")
          end
        end
      end

      context "outside a quote block" do
        setup do
          @user2 = FactoryBot.create(:user)
          @post = FactoryBot.build(:forum_post, :topic_id => @topic.id, :body => "Hey @#{@user2.name} check this out!")
        end

        should "create a dmail" do
          assert_difference("Dmail.count", 1) do
            @post.save
          end

          dmail = Dmail.last
          assert_equal(<<-EOS.strip_heredoc, dmail.body)
            @#{CurrentUser.name} mentioned you in topic ##{@topic.id} (\"#{@topic.title}\":[/forum_topics/#{@topic.id}?page=1]):

            [quote]
            Hey @#{@user2.name} check this out!
            [/quote]
          EOS
        end
      end
    end

    context "that belongs to a topic with several pages of posts" do
      setup do
        Danbooru.config.stubs(:posts_per_page).returns(3)
        @posts = []
        9.times do
          @posts << FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => rand(100_000))
        end
        Timecop.travel(2.seconds.from_now) do
          @posts << FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => rand(100_000))
        end
      end

      context "that is deleted" do
        setup do
          CurrentUser.user = FactoryBot.create(:moderator_user)
        end
        
        should "update the topic's updated_at timestamp" do
          @topic.reload
          assert_equal(@posts[-1].updated_at.to_i, @topic.updated_at.to_i)
          @posts[-1].delete!
          @topic.reload
          assert_equal(@posts[-2].updated_at.to_i, @topic.updated_at.to_i)
        end
      end

      should "know which page it's on" do
        assert_equal(2, @posts[3].forum_topic_page)
        assert_equal(2, @posts[4].forum_topic_page)
        assert_equal(2, @posts[5].forum_topic_page)
        assert_equal(3, @posts[6].forum_topic_page)
      end

      should "update the topic's updated_at when deleted" do
        @posts.last.destroy
        @topic.reload
        assert_equal(@posts[8].updated_at.to_s, @topic.updated_at.to_s)
      end
    end

    context "belonging to a locked topic" do
      setup do
        @post = FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "zzz")
        @topic.update_attribute(:is_locked, true)
        @post.reload
      end

      should "not be updateable" do
        @post.update_attributes(:body => "xxx")
        @post.reload
        assert_equal("zzz", @post.body)
      end

      should "not be deletable" do
        assert_difference("ForumPost.count", 0) do
          @post.destroy
        end
      end
    end

    should "update the topic when created" do
      @original_topic_updated_at = @topic.updated_at
      Timecop.travel(1.second.from_now) do
        post = FactoryBot.create(:forum_post, :topic_id => @topic.id)
      end
      @topic.reload
      assert_not_equal(@original_topic_updated_at.to_s, @topic.updated_at.to_s)
    end

    should "update the topic when updated only for the original post" do
      posts = []
      3.times do
        posts << FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => rand(100_000))
      end
      
      # updating the original post
      Timecop.travel(1.second.from_now) do
        posts.first.update_attributes(:body => "xxx")
      end
      @topic.reload
      assert_equal(posts.first.updated_at.to_s, @topic.updated_at.to_s)

      # updating a non-original post
      Timecop.travel(2.seconds.from_now) do
        posts.last.update_attributes(:body => "xxx")
      end
      assert_equal(posts.first.updated_at.to_s, @topic.updated_at.to_s)
    end

    should "be searchable by body content" do
      post = FactoryBot.create(:forum_post, :topic_id => @topic.id, :body => "xxx")
      assert_equal(1, ForumPost.body_matches("xxx").count)
      assert_equal(0, ForumPost.body_matches("aaa").count)
    end

    should "initialize its creator" do
      post = FactoryBot.create(:forum_post, :topic_id => @topic.id)
      assert_equal(@user.id, post.creator_id)
    end

    context "updated by a second user" do
      setup do
        @post = FactoryBot.create(:forum_post, :topic_id => @topic.id)
        @second_user = FactoryBot.create(:user)
        CurrentUser.user = @second_user
      end

      should "record its updater" do
        @post.update_attributes(:body => "abc")
        assert_equal(@second_user.id, @post.updater_id)
      end
    end
  end
end