Chapter 05 를 공부하고 코드 작성 과정을 따라하라

src/main/java/com/johngrib/objects/_05_movie/AmountDiscountMovie.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+
+import java.time.Duration;
+
+public class AmountDiscountMovie extends Movie {
+  private Money discountAmount;
+
+  public AmountDiscountMovie(
+          String title, Duration runningTime, Money fee,
+          Money discountAmount, DiscountCondition... discountConditions) {
+    super(title, runningTime, fee, discountConditions);
+    this.discountAmount = discountAmount;
+  }
+
+  @Override
+  protected Money calculateDiscountAmount() {
+    return discountAmount;
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/DiscountCondition.java

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+package com.johngrib.objects._05_movie;
+
+public interface DiscountCondition {
+  boolean isSatisfiedBy(Screening screening);
+}

src/main/java/com/johngrib/objects/_05_movie/Movie.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+import com.johngrib.objects._04_movie_data_system.MovieType;
+import lombok.Getter;
+
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.List;
+
+public abstract class Movie {
+  private String title;
+  private Duration runningTime;
+  @Getter
+  private Money fee;
+
+  private List<DiscountCondition> discountConditions;
+
+  private MovieType movieType;
+  private Money discountAmount;
+  private double discountPercent;
+
+  public Movie(String title, Duration runningTime, Money fee, DiscountCondition... discountConditions) {
+    this.title = title;
+    this.runningTime = runningTime;
+    this.fee = fee;
+    this.discountConditions = Arrays.asList(discountConditions);
+  }
+
+  public Money calculateMovieFee(Screening screening) {
+    if (isDiscountable(screening)) {
+      return fee.minus(calculateDiscountAmount());
+    }
+    return fee;
+  }
+
+  private boolean isDiscountable(Screening screening) {
+    return discountConditions.stream()
+            .anyMatch(condition -> condition.isSatisfiedBy(screening));
+  }
+
+  abstract protected Money calculateDiscountAmount();
+}

src/main/java/com/johngrib/objects/_05_movie/NoneDiscountMovie.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+
+import java.time.Duration;
+
+public class NoneDiscountMovie extends Movie {
+  public NoneDiscountMovie(String title, Duration runningTime, Money fee) {
+    super(title, runningTime, fee);
+  }
+
+  @Override
+  protected Money calculateDiscountAmount() {
+    return Money.ZERO;
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/PercentDiscountMovie.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+
+import java.time.Duration;
+
+public class PercentDiscountMovie extends Movie {
+  private double percent;
+
+  public PercentDiscountMovie(
+          String title, Duration runningTime, Money fee, double percent, DiscountCondition... discountConditions) {
+    super(title, runningTime, fee, discountConditions);
+    this.percent = percent;
+  }
+
+  @Override
+  protected Money calculateDiscountAmount() {
+    return getFee().times(percent);
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/PeriodCondition.java

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+package com.johngrib.objects._05_movie;
+
+import java.time.DayOfWeek;
+import java.time.LocalTime;
+
+public class PeriodCondition implements DiscountCondition {
+  private DayOfWeek dayOfWeek;
+  private LocalTime startTime;
+  private LocalTime endTime;
+
+  public PeriodCondition(DayOfWeek dayOfWeek, LocalTime startTime, LocalTime endTime) {
+    this.dayOfWeek = dayOfWeek;
+    this.startTime = startTime;
+    this.endTime = endTime;
+  }
+
+  @Override
+  public boolean isSatisfiedBy(Screening screening) {
+    return dayOfWeek.equals(screening.getWhenScreened().getDayOfWeek())
+            && startTime.isBefore(screening.getWhenScreened().toLocalTime())
+            && endTime.isAfter(screening.getWhenScreened().toLocalTime());
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/Reservation.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+import com.johngrib.objects._04_movie_data_system.Customer;
+
+public class Reservation {
+  private Customer customer;
+  private Screening screening;
+  private Money fee;
+  private int audienceCount;
+
+  public Reservation(Customer customer, Screening screening, Money fee, int audienceCount) {
+    this.customer = customer;
+    this.screening = screening;
+    this.fee = fee;
+    this.audienceCount = audienceCount;
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/Screening.java

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+package com.johngrib.objects._05_movie;
+
+import com.johngrib.objects._02_movie.Money;
+import com.johngrib.objects._04_movie_data_system.Customer;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+
+public class Screening {
+  private Movie movie;
+  @Getter
+  private int sequence;
+  @Getter
+  private LocalDateTime whenScreened;
+
+  public Reservation reserve(Customer customer, int audienceCount) {
+    return new Reservation(customer, this, calculateFee(audienceCount), audienceCount);
+  }
+
+  private Money calculateFee(int audienceCount) {
+    return movie.calculateMovieFee(this).times(audienceCount);
+  }
+}

src/main/java/com/johngrib/objects/_05_movie/SequenceCondition.java

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+package com.johngrib.objects._05_movie;
+
+public class SequenceCondition implements DiscountCondition {
+  private int sequence;
+
+  public SequenceCondition(int sequence) {
+    this.sequence = sequence;
+  }
+
+  @Override
+  public boolean isSatisfiedBy(Screening screening) {
+    return sequence == screening.getSequence();
+  }
+}