require 'test_helper'

require 'representable/json/hash'

class LonelyRepresenterTest < Minitest::Spec

  # test ::items without arguments, render-only.
  for_formats(
    :hash => [Representable::Hash::Collection, [{"name"=>"Resist Stance"}, {"name"=>"Suffer"}]],
    :json => [Representable::JSON::Collection, "[{\"name\":\"Resist Stance\"},{\"name\":\"Suffer\"}]"],
    :xml  => [Representable::XML::Collection, "<array><song><name>Resist Stance</name></song><song><name>Suffer</name></song></array>"],
  ) do |format, mod, output, input|

    describe "[#{format}] lonely collection, render-only" do # TODO: introduce :representable option?
      let(:format) { format }

      representer!(module: mod) do
        items do
          property :name
        end
      end

      let(:album) { [Song.new("Resist Stance"), Song.new("Suffer")].extend(representer) }

      it "calls #to_hash on song instances, nothing else" do
        render(album).must_equal_document(output)
      end
    end
  end



  module SongRepresenter
    include Representable::JSON

    property :name
  end

  let(:decorator) { rpr = representer; Class.new(Representable::Decorator) { include Representable::Hash; include rpr } }

  describe "JSON::Collection" do
    let(:songs) { [Song.new("Days Go By"), Song.new("Can't Take Them All")] }
    let(:json)  { "[{\"name\":\"Days Go By\"},{\"name\":\"Can't Take Them All\"}]" }

    describe "with contained objects" do
      let(:representer) {
        Module.new do
          include Representable::JSON::Collection
          items :class => Song, :extend => SongRepresenter
        end
      }


      it "renders array" do
        assert_json json, songs.extend(representer).to_json
      end

      it "renders array with decorator" do
        assert_json json, decorator.new(songs).to_json
      end

      it "parses array" do
        [].extend(representer).from_json(json).must_equal songs
      end

      it "parses array with decorator" do
        decorator.new([]).from_json(json).must_equal songs
      end
    end

    describe "with inline representer" do
      representer!(:module => Representable::JSON::Collection) do
        items :class => Song do
          property :name
        end
      end

      it { songs.extend(representer).to_json.must_equal json }
      it { [].extend(representer).from_json(json).must_equal songs }
    end

    describe "with contained text" do
      let(:representer) {
        Module.new do
          include Representable::JSON::Collection
        end
      }
      let(:songs) { ["Days Go By", "Can't Take Them All"] }
      let(:json)  { "[\"Days Go By\",\"Can't Take Them All\"]" }

      it "renders contained items #to_json" do
        assert_json json, songs.extend(representer).to_json
      end

      it "returns objects array from #from_json" do
        [].extend(representer).from_json(json).must_equal songs
      end
    end
  end

  describe "Hash::Collection with dynamic options" do
    class One < Representable::Decorator
      def to_hash(*); "One: #{represented}"; end
    end

    class Two < Representable::Decorator
      def to_hash(*); "Two: #{represented}"; end
    end

    representer!(module: Representable::Hash::Collection) do
      items extend: ->(options) { options[:input] == 1 ? options[:user_options][:one] : options[:user_options][:two] }
    end


    it { [1,2].extend(representer).to_hash(user_options: {one: One, two: Two}).must_equal(["One: 1", "Two: 2"]) }
  end


  describe "JSON::Hash" do  # TODO: move to HashTest.
    describe "with contained objects" do
      let(:representer) {
        Module.new do
          include Representable::JSON::Hash
          values :class => Song, :extend => SongRepresenter
        end
      }
      let(:json)  { "{\"one\":{\"name\":\"Days Go By\"},\"two\":{\"name\":\"Can't Take Them All\"}}" }
      let(:songs) { {"one" => Song.new("Days Go By"), "two" => Song.new("Can't Take Them All")} }

      describe "#to_json" do
        it "renders hash" do
          songs.extend(representer).to_json.must_equal json
        end

        it "renders hash with decorator" do
          decorator.new(songs).to_json.must_equal json
        end

        it "respects :exclude" do
          assert_json "{\"two\":{\"name\":\"Can't Take Them All\"}}", {:one => Song.new("Days Go By"), :two => Song.new("Can't Take Them All")}.extend(representer).to_json(:exclude => [:one])
        end

        it "respects :include" do
          assert_json "{\"two\":{\"name\":\"Can't Take Them All\"}}", {:one => Song.new("Days Go By"), :two => Song.new("Can't Take Them All")}.extend(representer).to_json(:include => [:two])
        end
      end

      describe "#from_json" do
        it "returns objects array" do
          {}.extend(representer).from_json(json).must_equal songs
        end

        it "parses hash with decorator" do
          decorator.new({}).from_json(json).must_equal songs
        end

        it "respects :exclude" do
          assert_equal({"two" => Song.new("Can't Take Them All")}, {}.extend(representer).from_json(json, :exclude => [:one]))
        end

        it "respects :include" do
          assert_equal({"one" => Song.new("Days Go By")}, {}.extend(representer).from_json(json, :include => [:one]))
        end
      end


      describe "with inline representer" do
        representer!(:module => Representable::JSON::Hash) do
          values :class => Song do
            property :name
          end
        end

        it { songs.extend(representer).to_json.must_equal json }
        it { {}.extend(representer).from_json(json).must_equal songs }
      end
    end


    describe "with scalar" do
      let(:representer) {
        Module.new do
          include Representable::JSON::Hash
        end
      }
      let(:json)  { %{{"one":1,"two":2}} }
      let(:data) { {one: 2, two: 3} }

      describe "#to_json" do
        it { data.extend(representer).to_json.must_equal %{{"one":2,"two":3}} }

        # it "respects :exclude" do
        #   assert_json "{\"two\":{\"name\":\"Can't Take Them All\"}}", {:one => Song.new("Days Go By"), :two => Song.new("Can't Take Them All")}.extend(representer).to_json(:exclude => [:one])
        # end

        # it "respects :include" do
        #   assert_json "{\"two\":{\"name\":\"Can't Take Them All\"}}", {:one => Song.new("Days Go By"), :two => Song.new("Can't Take Them All")}.extend(representer).to_json(:include => [:two])
        # end
      end

      describe "#from_json" do # FIXME: what's the point of this?
        it { data.extend(representer).from_hash(data).must_equal data }
      end
    end


    describe "with contained text" do
      before do
        @songs_representer = Module.new do
          include Representable::JSON::Collection
        end
      end

      it "renders contained items #to_json" do
        assert_json "[\"Days Go By\",\"Can't Take Them All\"]", ["Days Go By", "Can't Take Them All"].extend(@songs_representer).to_json
      end

      it "returns objects array from #from_json" do
        assert_equal ["Days Go By", "Can't Take Them All"], [].extend(@songs_representer).from_json("[\"Days Go By\",\"Can't Take Them All\"]")
      end
    end
  end
end


# describe "Hash::Collection with :include" do
class CollectionWithIncludeTest < Minitest::Spec
  Song = Struct.new(:id, :title)

  representer!(decorator: true, module: Representable::Hash::Collection) do
    items do
      property :id
      property :title
    end
  end

  it { representer.new([Song.new(1, "ACAB")]).to_hash.must_equal([{"id"=>1, "title"=>"ACAB"}]) }
  it { representer.new([Song.new(1, "ACAB")]).to_hash(include: [:title]).must_equal([{"title"=>"ACAB"}]) }
end