require 'rails_helper'

describe LHS::Item do

  let(:datastore) { 'http://local.ch' }

  before(:each) do
    LHC.config.placeholder('datastore', datastore)
    class User < LHS::Service
      endpoint ':datastore/v2/users', validates: true
    end
    mock_validation
  end

  let(:mock_validation) do
      successful_validation
    end

  let(:successful_validation) do
    stub_request(:post, "#{datastore}/v2/users?persist=false").to_return(body: '{}')
  end

  let(:failing_validation) do
    stub_request(:post, "#{datastore}/v2/users?persist=false")
      .to_return(status: 400,
        body: {
          field_errors: [{code: "UNSUPPORTED_PROPERTY_VALUE", "path" => [ "email" ]}] 
        }.to_json
      )
  end

  context 'valid data' do
    let(:user) do
      User.build(email: 'steve@local.ch')
    end

    it 'validates' do
      expect(user.valid?).to eq true
    end

    it 'turns to be invalid if validating on changed, invalid data' do
      expect(user.valid?).to eq true
      user.email = 'not a valid email'
      failing_validation
      expect(user.valid?).to eq false
      expect(user.errors[:email]).to be
    end
  end

  context 'invalid data' do

    let(:user) do
      User.build(email: 'im not an email address')
    end

    let(:mock_validation) do
      failing_validation
    end

    it 'does not validate and provides error messages' do
      expect(user.valid?).to eq false
      expect(user.errors[:email]).to be
    end

    it 'resets errors when revalidating' do
      expect(user.valid?).to eq false
      user.email = 'steve@local.ch'
      successful_validation
      expect(user.valid?).to eq true
      expect(user.errors).to be_nil
    end
  end

  context 'endpoint does not support validations' do
    before(:each) do
      class Favorite < LHS::Service
        endpoint ':datastore/v2/favorites'
      end
    end

    it 'fails when trying to use an endpoint for validations that does not support it' do
      expect(->{
        Favorite.build.valid?
      }).to raise_error('Endpoint does not support validations!')
    end
  end
end