require "spec_helper"
require "securerandom"

describe "REST" do
  include Ably::Modules::Conversions

  [:msgpack, :json].each do |protocol|
    context "over #{protocol}" do
      let(:client) do
        Ably::Rest::Client.new(api_key: api_key, environment: environment, protocol: protocol)
      end

      let(:fixtures) do
        TestApp::APP_SPEC['channels'].first['presence'].map do |fixture|
          IdiomaticRubyWrapper(fixture, stop_at: [:client_data])
        end
      end

      describe "fetching presence" do
        let(:channel) { client.channel("persisted:presence_fixtures") }
        let(:presence) { channel.presence.get }

        it "returns current members on the channel" do
          expect(presence.size).to eql(4)

          fixtures.each do |fixture|
            presence_message = presence.find { |client| client.client_id == fixture[:client_id] }
            expect(presence_message.client_data).to eq(fixture[:client_data])
          end
        end
      end

      describe "presence history" do
        let(:channel) { client.channel("persisted:presence_fixtures") }
        let(:history) { channel.presence.history }

        it "returns recent presence activity" do
          expect(history.size).to eql(4)

          fixtures.each do |fixture|
            presence_message = history.find { |client| client.client_id == fixture['clientId'] }
            expect(presence_message.client_data).to eq(fixture[:client_data])
          end
        end

        context 'with options' do
          let(:page_size) { 2 }
          let(:paged_history_forward) { channel.presence.history(limit: page_size, direction: :forwards) }

          it "returns recent presence activity with options passsed to Ably" do
            expect(paged_history_forward).to be_a(Ably::Models::PaginatedResource)
            expect(paged_history_forward.size).to eql(2)

            next_page = paged_history_forward.next_page

            expect(paged_history_forward.first.id).to eql(history.last.id)
            expect(next_page.first.id).to eql(history[page_size].id)
          end
        end
      end

      describe "options" do
        let(:channel_name) { "persisted:#{SecureRandom.hex(4)}" }
        let(:presence) { client.channel(channel_name).presence }
        let(:user) { 'appid.keyuid' }
        let(:secret) { SecureRandom.hex(8) }
        let(:endpoint) do
          client.endpoint.tap do |client_end_point|
            client_end_point.user = user
            client_end_point.password = secret
          end
        end
        let(:client) do
          Ably::Rest::Client.new(api_key: "#{user}:#{secret}")
        end

        [:start, :end].each do |option|
          describe ":{option}", webmock: true do
            let!(:history_stub) {
              stub_request(:get, "#{endpoint}/channels/#{CGI.escape(channel_name)}/presence/history?live=true&#{option}=#{milliseconds}").
                to_return(:body => '{}', :headers => { 'Content-Type' => 'application/json' })
            }

            before do
              presence.history(options)
            end

            context 'with milliseconds since epoch' do
              let(:milliseconds) { as_since_epoch(Time.now) }
              let(:options) { { option => milliseconds } }

              specify 'are left unchanged' do
                expect(history_stub).to have_been_requested
              end
            end

            context 'with Time' do
              let(:time) { Time.now }
              let(:milliseconds) { as_since_epoch(time) }
              let(:options) { { option => time } }

              specify 'are left unchanged' do
                expect(history_stub).to have_been_requested
              end
            end
          end
        end
      end
    end
  end
end