package rewards.internal;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import rewards.AccountContribution;
import rewards.Dining;
import rewards.RewardConfirmation;
import rewards.RewardNetwork;
import rewards.internal.account.Account;
import rewards.internal.account.AccountRepository;
import rewards.internal.restaurant.Restaurant;
import rewards.internal.restaurant.RestaurantRepository;
import rewards.internal.reward.RewardRepository;
import common.money.MonetaryAmount;
/**
* Rewards an Account for Dining at a Restaurant.
*
* The sole Reward Network implementation. This object is an application-layer service responsible for coordinating with
* the domain-layer to carry out the process of rewarding benefits to accounts for dining.
*
* Said in other words, this class implements the "reward account for dining" use case.
*/
@Service("rewardNetwork")
public class RewardNetworkImpl implements RewardNetwork {
private AccountRepository accountRepository;
private RestaurantRepository restaurantRepository;
private RewardRepository rewardRepository;
/**
* Creates a new reward network.
* @param accountRepository the repository for loading accounts to reward
* @param restaurantRepository the repository for loading restaurants that determine how much to reward
* @param rewardRepository the repository for recording a record of successful reward transactions
*/
@Autowired
public RewardNetworkImpl(AccountRepository accountRepository, RestaurantRepository restaurantRepository,
RewardRepository rewardRepository) {
this.accountRepository = accountRepository;
this.restaurantRepository = restaurantRepository;
this.rewardRepository = rewardRepository;
}
@Transactional
public RewardConfirmation rewardAccountFor(Dining dining) {
Account account = accountRepository.findByCreditCard(dining.getCreditCardNumber());
Restaurant restaurant = restaurantRepository.findByMerchantNumber(dining.getMerchantNumber());
MonetaryAmount amount = restaurant.calculateBenefitFor(account, dining);
AccountContribution contribution = account.makeContribution(amount);
return rewardRepository.confirmReward(contribution, dining);
}
}