Hw0

src/main/java/ru/javawebinar/topjava/Main.java

@@ -6,6 +6,6 @@
  */
 public class Main {
     public static void main(String[] args) {
-        System.out.format("Hello TopJava Enterprise!");
+        System.out.format("Hello TopJava Enterprise!!!!!!!!!!!!!!!!!");
     }
 }

src/main/java/ru/javawebinar/topjava/model/Meal.java

@@ -0,0 +1,29 @@
+package ru.javawebinar.topjava.model;
+
+import java.time.LocalDateTime;
+
+public class Meal {
+    private final LocalDateTime dateTime;
+
+    private final String description;
+
+    private final int calories;
+
+    public Meal(LocalDateTime dateTime, String description, int calories) {
+        this.dateTime = dateTime;
+        this.description = description;
+        this.calories = calories;
+    }
+
+    public LocalDateTime getDateTime() {
+        return dateTime;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public int getCalories() {
+        return calories;
+    }
+}

src/main/java/ru/javawebinar/topjava/model/MealTo.java

@@ -0,0 +1,30 @@
+package ru.javawebinar.topjava.model;
+
+import java.time.LocalDateTime;
+
+public class MealTo {
+    private final LocalDateTime dateTime;
+
+    private final String description;
+
+    private final int calories;
+
+    private final boolean excess;
+
+    public MealTo(LocalDateTime dateTime, String description, int calories, boolean excess) {
+        this.dateTime = dateTime;
+        this.description = description;
+        this.calories = calories;
+        this.excess = excess;
+    }
+
+    @Override
+    public String toString() {
+        return "MealTo{" +
+                "dateTime=" + dateTime +
+                ", description='" + description + '\'' +
+                ", calories=" + calories +
+                ", excess=" + excess +
+                '}';
+    }
+}

src/main/java/ru/javawebinar/topjava/util/MealsUtil.java

@@ -0,0 +1,59 @@
+package ru.javawebinar.topjava.util;
+
+import ru.javawebinar.topjava.model.Meal;
+import ru.javawebinar.topjava.model.MealTo;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.Month;
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class MealsUtil {
+    public static void main(String[] args) {
+        List<Meal> meals = Arrays.asList(
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 30, 10, 0), "Завтрак", 500),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 30, 13, 0), "Обед", 1000),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 30, 20, 0), "Ужин", 500),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 31, 0, 0), "Еда на граничное значение", 100),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 31, 10, 0), "Завтрак", 1000),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 31, 13, 0), "Обед", 500),
+                new Meal(LocalDateTime.of(2020, Month.JANUARY, 31, 20, 0), "Ужин", 410)
+        );
+
+        List<MealTo> mealsTo = filteredByCycles(meals, LocalTime.of(7, 0), LocalTime.of(12, 0), 2000);
+        mealsTo.forEach(System.out::println);
+        System.out.println("--------------------------------------------");
+        System.out.println(filteredByStreams(meals, LocalTime.of(7, 0), LocalTime.of(12, 0), 2000));
+    }
+
+    public static List<MealTo> filteredByCycles(List<Meal> meals, LocalTime startTime, LocalTime endTime, int caloriesPerDay) {
+        Map<LocalDate, Integer> caloriesSumPerDates = new HashMap<>();
+        for (Meal meal : meals) {
+            caloriesSumPerDates.merge(meal.getDateTime().toLocalDate(), meal.getCalories(), Integer::sum);
+        }
+        List<MealTo> userMealsWithExcesses = new ArrayList<>();
+        for (Meal meal : meals) {
+            LocalDateTime mealDateTime = meal.getDateTime();
+            if (TimeUtil.isBetweenHalfOpen(mealDateTime.toLocalTime(), startTime, endTime)) {
+                userMealsWithExcesses.add(createUserWithExcess(meal,
+                        caloriesSumPerDates.get(meal.getDateTime().toLocalDate()) > caloriesPerDay));
+            }
+        }
+        return userMealsWithExcesses;
+    }
+
+    public static List<MealTo> filteredByStreams(List<Meal> meals, LocalTime startTime, LocalTime endTime, int caloriesPerDay) {
+        Map<LocalDate, Integer> caloriesSumPerDates = meals.stream()
+                .collect(Collectors.groupingBy(meal -> meal.getDateTime().toLocalDate(),Collectors.summingInt(Meal::getCalories)));
+        return meals.stream()
+                .filter(meal -> TimeUtil.isBetweenHalfOpen(meal.getDateTime().toLocalTime(), startTime, endTime))
+                .map(meal -> createUserWithExcess(meal, caloriesSumPerDates.get(meal.getDateTime().toLocalDate()) > caloriesPerDay))
+                .collect(Collectors.toList());
+    }
+
+    private static MealTo createUserWithExcess(Meal meal, boolean excess) {
+        return new MealTo(meal.getDateTime(), meal.getDescription(), meal.getCalories(), excess);
+    }
+}

src/main/java/ru/javawebinar/topjava/util/TimeUtil.java

@@ -0,0 +1,9 @@
+package ru.javawebinar.topjava.util;
+
+import java.time.LocalTime;
+
+public class TimeUtil {
+    public static boolean isBetweenHalfOpen(LocalTime lt, LocalTime startTime, LocalTime endTime) {
+        return lt.compareTo(startTime) >= 0 && lt.compareTo(endTime) < 0;
+    }
+}