require 'spec_helper'

class Doorkeeper::OAuth::ClientCredentialsRequest
  describe Creator do
    let(:client) { FactoryBot.create :application }
    let(:scopes) { Doorkeeper::OAuth::Scopes.from_string('public') }

    before do
      default_scopes_exist :public
    end

    it 'creates a new token' do
      expect do
        subject.call(client, scopes)
      end.to change { Doorkeeper::AccessToken.count }.by(1)
    end

    context 'when reuse_access_token is true' do
      context 'when expiration is disabled' do
        it 'returns the existing valid token' do
          allow(Doorkeeper.configuration).to receive(:reuse_access_token).and_return(true)
          existing_token = subject.call(client, scopes)

          result = subject.call(client, scopes)

          expect(Doorkeeper::AccessToken.count).to eq(1)
          expect(result).to eq(existing_token)
        end
      end

      context 'when existing token has not crossed token_reuse_limit' do
        it 'returns the existing valid token' do
          allow(Doorkeeper.configuration).to receive(:reuse_access_token).and_return(true)
          allow(Doorkeeper.configuration).to receive(:token_reuse_limit).and_return(50)
          existing_token = subject.call(client, scopes, expires_in: 1000)

          allow_any_instance_of(Doorkeeper::AccessToken).to receive(:expires_in_seconds).and_return(600)
          result = subject.call(client, scopes, expires_in: 1000)

          expect(Doorkeeper::AccessToken.count).to eq(1)
          expect(result).to eq(existing_token)
        end
      end

      context 'when existing token has crossed token_reuse_limit' do
        it "returns a new token" do
          allow(Doorkeeper.configuration).to receive(:reuse_access_token).and_return(true)
          allow(Doorkeeper.configuration).to receive(:token_reuse_limit).and_return(50)
          existing_token = subject.call(client, scopes, expires_in: 1000)

          allow_any_instance_of(Doorkeeper::AccessToken).to receive(:expires_in_seconds).and_return(400)
          result = subject.call(client, scopes, expires_in: 1000)

          expect(Doorkeeper::AccessToken.count).to eq(2)
          expect(result).not_to eq(existing_token)
        end
      end

      context 'when existing token has been expired' do
        it "returns a new token" do
          allow(Doorkeeper.configuration).to receive(:reuse_access_token).and_return(true)
          allow(Doorkeeper.configuration).to receive(:token_reuse_limit).and_return(50)
          existing_token = subject.call(client, scopes, expires_in: 1000)

          allow_any_instance_of(Doorkeeper::AccessToken).to receive(:expired?).and_return(true)
          result = subject.call(client, scopes, expires_in: 1000)

          expect(Doorkeeper::AccessToken.count).to eq(2)
          expect(result).not_to eq(existing_token)
        end
      end
    end

    context "when reuse_access_token is false" do
      it "returns a new token" do
        allow(Doorkeeper.configuration).to receive(:reuse_access_token).and_return(false)
        existing_token = subject.call(client, scopes)

        result = subject.call(client, scopes)

        expect(Doorkeeper::AccessToken.count).to eq(2)
        expect(result).not_to eq(existing_token)
      end
    end

    it 'returns false if creation fails' do
      expect(Doorkeeper::AccessToken).to receive(:find_or_create_for).and_return(false)
      created = subject.call(client, scopes)
      expect(created).to be_falsey
    end
  end
end