require "rails_helper"
require "requests/shared_examples/comment_hide_or_unhide_request"

RSpec.describe "Comments", type: :request do
  let(:user) { create(:user) }
  let(:article) { create(:article, user_id: user.id) }
  let(:podcast) { create(:podcast) }
  let(:podcast_episode) { create(:podcast_episode, podcast_id: podcast.id) }
  let(:comment) do
    create(:comment,
           commentable_id: article.id,
           commentable_type: "Article",
           user_id: user.id)
  end
  let(:podcast_comment) do
    create(:comment,
           commentable_id: podcast_episode.id,
           commentable_type: "PodcastEpisode",
           user_id: user.id)
  end

  describe "GET comment index" do
    it "returns 200" do
      get comment.path
      expect(response).to have_http_status(:ok)
    end

    it "displays a comment" do
      get comment.path
      expect(response.body).to include(comment.processed_html)
    end

    it "displays full discussion text" do
      get comment.path
      expect(response.body).to include("FULL DISCUSSION")
    end

    context "when the comment is a root" do
      it "does not display top of thread button" do
        get comment.path
        expect(response.body).not_to include("TOP OF THREAD")
      end

      it "displays the comment hidden message if the comment is hidden" do
        comment.update(hidden_by_commentable_user: true)
        get comment.path
        hidden_comment_message = "Comment hidden by post author - thread only visible in this permalink"
        expect(response.body).to include(hidden_comment_message)
      end

      it "displays the comment anyway if it is hidden" do
        comment.update(hidden_by_commentable_user: true)
        get comment.path
        expect(response.body).to include(comment.processed_html)
      end
    end

    context "when the comment is a child comment" do
      let(:child) { create(:comment, parent_id: comment.id, commentable: article, user_id: user.id) }

      it "displays proper button and text for child comment" do
        get child.path
        expect(response.body).to include("TOP OF THREAD")
        expect(response.body).to include(CGI.escapeHTML(comment.title(150)))
        expect(response.body).to include(child.processed_html)
      end

      it "does not display the comment if it is hidden" do
        child.update(hidden_by_commentable_user: true)
        get comment.path
        expect(response.body).not_to include child.processed_html
      end
    end

    context "when the comment is two levels nested and hidden" do # child of a child
      let(:child) { create(:comment, parent_id: comment.id, commentable: article, user_id: user.id) }
      let(:child_of_child) { create(:comment, parent_id: child.id, commentable: article, user_id: user.id, hidden_by_commentable_user: true) }

      it "does not display the hidden comment in the child's permalink" do
        get child.path
        expect(response.body).not_to include(child_of_child.processed_html)
      end

      it "does not display the hidden comment in the article's comments section" do
        get "#{article.path}/comments"
        expect(response.body).not_to include(child_of_child.processed_html)
      end
    end

    context "when the comment is a sibling of a child comment and is hidden" do
      let(:child) { create(:comment, parent_id: comment.id, commentable: article, user_id: user.id) }
      let(:sibling) { create(:comment, parent_id: comment.id, commentable: article, user_id: user.id, hidden_by_commentable_user: true) }

      it "does not display the hidden comment in the article's comments section" do
        get "#{article.path}/comments"
        expect(response.body).not_to include(sibling.processed_html)
      end

      it "shows the hidden comments message in the comment's permalink" do
        get sibling.path
        hidden_comment_message = "Comment hidden by post author - thread only visible in this permalink"
        expect(response.body).to include(hidden_comment_message)
      end

      it "does not show the sibling comment in the child's comment permalink" do
        get child.path
        expect(response.body).not_to include(sibling.processed_html)
      end

      it "shows the comment in the permalink" do
        get sibling.path
        expect(response.body).to include(sibling.processed_html)
      end
    end

    context "when the comment is three levels nested and hidden" do # child of a child of a child
      let(:child) { create(:comment, parent_id: comment.id, commentable: article, user_id: user.id) }
      let(:second_level_child) { create(:comment, parent_id: child.id, commentable: article, user_id: user.id) }
      let(:third_level_child) { create(:comment, parent_id: second_level_child.id, commentable: article, user_id: user.id, hidden_by_commentable_user: true) }
      let(:fourth_level_child) { create(:comment, parent_id: third_level_child.id, commentable: article, user_id: user.id) }

      it "does not show the hidden comment in the article's comments section" do
        get "#{article.path}/comments"
        expect(response.body).not_to include(third_level_child.processed_html)
      end

      it "does not show the hidden comment's children in the article's comments section" do
        fourth_level_child
        get "#{article.path}/comments"
        expect(response.body).not_to include(fourth_level_child.processed_html)
      end

      it "does not show the hidden comment in its parent's permalink" do
        get second_level_child.path
        expect(response.body).not_to include(third_level_child.processed_html)
      end

      it "does not show the hidden comment's child in its parent's permalink" do
        fourth_level_child
        get second_level_child.path
        expect(response.body).not_to include(fourth_level_child.processed_html)
      end

      it "shows the comment in the permalink" do
        get third_level_child.path
        expect(response.body).to include(third_level_child.processed_html)
      end

      it "shows the fourth level child in the hidden comment's permalink" do
        fourth_level_child
        get third_level_child.path
        expect(response.body).to include(fourth_level_child.processed_html)
      end
    end

    context "when the comment is for a podcast's episode" do
      it "works" do
        get podcast_comment.path
        expect(response).to have_http_status(:ok)
      end
    end

    context "when the article is unpublished" do
      before do
        new_markdown = article.body_markdown.gsub("published: true", "published: false")
        comment
        article.update(body_markdown: new_markdown)
      end

      it "raises a Not Found error" do
        expect { get comment.path }.to raise_error("Not Found")
      end
    end
  end

  describe "GET /:username/:slug/comments/:id_code/edit" do
    context "when not logged-in" do
      it "returns unauthorized error" do
        expect do
          get "/#{user.username}/#{article.slug}/comments/#{comment.id_code_generated}/edit"
        end.to raise_error(Pundit::NotAuthorizedError)
      end
    end

    context "when logged-in" do
      before do
        sign_in user
      end

      it "returns 200" do
        get "/#{user.username}/#{article.slug}/comments/#{comment.id_code_generated}/edit"
        expect(response).to have_http_status(:ok)
      end

      it "returns the comment" do
        get "/#{user.username}/#{article.slug}/comments/#{comment.id_code_generated}/edit"
        expect(response.body).to include CGI.escapeHTML(comment.body_markdown)
      end
    end
  end

  describe "POST /comments/preview" do
    it "returns 401 if user is not logged in" do
      post "/comments/preview",
           params: { comment: { body_markdown: "hi" } },
           headers: { HTTP_ACCEPT: "application/json" }
      expect(response).to have_http_status(:unauthorized)
    end

    context "when logged-in" do
      before do
        sign_in user
        post "/comments/preview",
             params: { comment: { body_markdown: "hi" } },
             headers: { HTTP_ACCEPT: "application/json" }
      end

      it "returns 200 on good request" do
        expect(response).to have_http_status(:ok)
      end

      it "returns json" do
        expect(response.content_type).to eq("application/json")
      end
    end
  end

  describe "PATCH /comments/:comment_id/hide" do
    include_examples "PATCH /comments/:comment_id/hide or unhide", path: "hide", hidden: "true"
  end

  describe "PATCH /comments/:comment_id/unhide" do
    include_examples "PATCH /comments/:comment_id/hide or unhide", path: "unhide", hidden: "false"
  end
end