require 'rails_helper'

RSpec.describe Api::PostsController, type: :controller do
  describe "index" do
    describe 'unauthorized' do
      it 'redirects to login page' do
        get :index
        response.redirect_url.should end_with('/users/sign_in')
      end
    end

    describe 'authorized' do
      before { sign_in create :user }
      it "no default include, default pagination" do
        post1 = create :post, title: 'post-1', body: 'post-body-1'
        comment = create :comment, post: post1
        post2 = create :post, title: 'post-2', body: 'post-body-2'
        get :index
        assert_json(
          data: [
            {
              id: post1.id.to_s,
              type: "post",
              attributes: {"title"=>"post-1", "body"=>"post-body-1"},
              relationships: {
                comments: {data: [{id: comment.id.to_s , type: "comment" }]}
              }
            },
            {
              id: post2.id.to_s,
              type: "post",
              attributes: {"title"=>"post-2", "body"=>"post-body-2"},
              relationships: {
                comments: {data: []}
              }
            },
          ],
          meta: {"total-pages"=>1, "total-count"=>2}
        )
      end

      it "does not paginate when index_pagination? is false" do
        expect( subject ).to receive(:index_pagination?).and_return false
        post1 = create :post, title: 'post-1', body: 'post-body-1'
        comment = create :comment, post: post1
        post2 = create :post, title: 'post-2', body: 'post-body-2'
        get :index
        assert_json(
          data: [
            {
              id: post1.id.to_s,
              type: "post",
              attributes: {"title"=>"post-1", "body"=>"post-body-1"},
              relationships: {
                comments: {data: [{id: comment.id.to_s , type: "comment" }]}
              }
            },
            {
              id: post2.id.to_s,
              type: "post",
              attributes: {"title"=>"post-2", "body"=>"post-body-2"},
              relationships: {
                comments: {data: []}
              }
            },
          ]
        )
      end

      it "includes associations if configured" do
        expect( subject ).to receive(:index_serialize_options).and_return(include: 'comments')
        post1 = create :post, title: 'post-1', body: 'post-body-1'
        comment = create :comment, post: post1, body: 'post-1-comment-1'
        post2 = create :post, title: 'post-2', body: 'post-body-2'
        get :index
        assert_json(
          data: [
            {
              id: post1.id.to_s,
              type: "post",
              attributes: {"title"=>"post-1", "body"=>"post-body-1"},
              relationships: {
                comments: {data: [{id: comment.id.to_s , type: "comment" }]}
              }
            },
            {
              id: post2.id.to_s,
              type: "post",
              attributes: {"title"=>"post-2", "body"=>"post-body-2"},
              relationships: {
                comments: {data: []}
              }
            },
          ],
          included: [
            {
              id: comment.id.to_s,
              type: "comment",
              attributes: {body: "post-1-comment-1"},
              relationships: {
                post: {data: {id: post1.id.to_s, type: "post"}}
              }
            }
          ],
          meta: {"total-pages"=>1, "total-count"=>2}
        )
      end
    end
  end
end