Sprint 9 solution http api

src/Main.java

@@ -1,54 +1,52 @@
-import manager.InMemoryTaskManager;
-import manager.Managers;
+import manager.FileBackedTaskManager;
 import manager.TaskManager;
-import model.Epic;
-import model.Status;
-import model.Subtask;
-import model.Task;
+import model.*;
 
-import java.util.List;
+import java.io.File;
+import java.time.Duration;
+import java.time.LocalDateTime;
 
 public class Main {
     public static void main(String[] args) {
-        TaskManager manager = Managers.getDefault();
-        Task task1 = new Task("Task1", "Desc", Status.NEW);
-        Task task2 = new Task("Task2", "Desc", Status.NEW);
+        File file = new File("tasks.csv");
+        TaskManager manager = new FileBackedTaskManager(file);
+
+        Task task1 = new Task("Task 1", "Simple task",
+                Status.NEW, Duration.ofMinutes(30), LocalDateTime.of(2025, 7, 1, 8, 0)); // 08:00–08:30
+        Task task2 = new Task("Task 2", "Another task",
+                Status.NEW, Duration.ofMinutes(45), LocalDateTime.of(2025, 7, 1, 8, 45)); // 08:45–09:30
         manager.addTask(task1);
         manager.addTask(task2);
 
-        Epic epic1 = new Epic("Epic1", "Desc");
-        Epic epic2 = new Epic("Epic2", "Desc");
-        manager.addEpic(epic1);
-        manager.addEpic(epic2);
+        Epic epic = new Epic("Epic 1", "Epic with subtasks");
+        manager.addEpic(epic);
 
-        Subtask subtask1 = new Subtask("Sub1", "Desc", Status.NEW, epic1.getId());
-        Subtask subtask2 = new Subtask("Sub2", "Desc", Status.NEW, epic1.getId());
+        Subtask subtask1 = new Subtask("Subtask 1", "Part 1",
+                Status.NEW, epic.getId(), Duration.ofMinutes(60), LocalDateTime.of(2025, 7, 1, 10, 0)); // 10:00–11:00
+        Subtask subtask2 = new Subtask("Subtask 2", "Part 2",
+                Status.DONE, epic.getId(), Duration.ofMinutes(90), LocalDateTime.of(2025, 7, 1, 11, 30)); // 11:30–13:00
         manager.addSubtask(subtask1);
         manager.addSubtask(subtask2);
 
-        manager.getTaskById(task1.getId());
-        manager.getEpicById(epic1.getId());
-        manager.getTaskById(task1.getId());
-        manager.getSubtaskById(subtask1.getId());
-        printHistory(manager);
+        System.out.println("=== Prioritized Tasks ===");
+        for (Task task : manager.getPrioritizedTasks()) {
+            System.out.println(task + " | start=" + task.getStartTime() + " | end=" + task.getEndTime());
+        }
 
-        manager.removeTaskById(task1.getId());
-        printHistory(manager);
+        TaskManager loadedManager = FileBackedTaskManager.loadFromFile(file);
+        System.out.println("\n=== Loaded Tasks ===");
+        for (Task task : loadedManager.getAllTasks()) {
+            System.out.println(task);
+        }
 
-        manager.removeEpicById(epic1.getId());
-        printHistory(manager); // []
-    }
+        System.out.println("\n=== Loaded Epics ===");
+        for (Epic e : loadedManager.getAllEpics()) {
+            System.out.println(e);
+        }
 
-    private static void printHistory(TaskManager manager) {
-        List<Task> history = manager.getHistory();
-        if (history.isEmpty()) {
-            System.out.println("History is empty");
-        } else {
-            System.out.println("\nView history (" + history.size() + " items):");
-            for (int i = 0; i < history.size(); i++) {
-                Task task = history.get(i);
-                System.out.println((i + 1) + ". " + task.getTitle() + " [ID:" + task.getId() + "]");
-            }
+        System.out.println("\n=== Loaded Subtasks ===");
+        for (Subtask s : loadedManager.getAllSubtasks()) {
+            System.out.println(s);
         }
     }
-}
+}

src/manager/BaseHttpHandler.java

@@ -49,6 +49,6 @@ protected void sendError(HttpExchange exchange, int statusCode, String message)
         try {
             String json = "{\"error\":\"" + message + "\"}";
             sendText(exchange, json, statusCode);
-        } catch (IOException ignored) {}
+        } catch (IOException ignored) { }
     }
 }

src/model/Epic.java

@@ -1,49 +1,65 @@
 package model;
 
+import java.time.Duration;
+import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 
 public class Epic extends Task {
     private final List<Integer> subtaskIds = new ArrayList<>();
+    private LocalDateTime endTime;
 
     public Epic(String title, String description) {
-        super(title, description, Status.NEW);
+        super(title, description, Status.NEW, Duration.ZERO, null);
     }
 
+
     public List<Integer> getSubtaskIds() {
         return subtaskIds;
     }
 
-    public void addSubtask(Subtask subtask) {
-        subtaskIds.add(subtask.getId());
+    public void addSubtaskId(int id) {
+        subtaskIds.add(id);
     }
 
-    public void removeSubtask(int subtaskId) {
-        subtaskIds.remove((Integer) subtaskId);
+    public void removeSubtaskId(int id) {
+        subtaskIds.remove(Integer.valueOf(id));
+    }
+
+    @Override
+    public LocalDateTime getEndTime() {
+        return endTime;
+    }
+
+    public void setEndTime(LocalDateTime endTime) {
+        this.endTime = endTime;
     }
 
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
-        if (!(o instanceof Epic)) return false;
+        if (!(o instanceof Epic epic)) return false;
         if (!super.equals(o)) return false;
-        Epic epic = (Epic) o;
         return Objects.equals(subtaskIds, epic.subtaskIds);
     }
 
     @Override
     public int hashCode() {
         return Objects.hash(super.hashCode(), subtaskIds);
     }
+
     @Override
     public String toString() {
         return "Epic{" +
                 "id=" + getId() +
                 ", title='" + getTitle() + '\'' +
                 ", description='" + getDescription() + '\'' +
                 ", status=" + getStatus() +
+                ", startTime=" + getStartTime() +
+                ", duration=" + getDuration() +
+                ", endTime=" + getEndTime() +
                 ", subtaskIds=" + subtaskIds +
                 '}';
     }
-}
+}

src/model/Subtask.java

@@ -1,25 +1,34 @@
 package model;
 
+import java.time.Duration;
+import java.time.LocalDateTime;
+
 public class Subtask extends Task {
-    private final int epicId;
+    private int epicId;
 
-    public Subtask(String title, String description, Status status, int epicId) {
-        super(title, description, status);
+    public Subtask(String title, String description, Status status, int epicId, Duration duration, LocalDateTime startTime) {
+        super(title, description, status, duration, startTime);
         this.epicId = epicId;
     }
 
     public int getEpicId() {
         return epicId;
     }
 
+    public void setEpicId(int epicId) {
+        this.epicId = epicId;
+    }
+
     @Override
     public String toString() {
         return "Subtask{" +
-                "id=" + getId() +
+                "epicId=" + epicId +
+                ", id=" + getId() +
                 ", title='" + getTitle() + '\'' +
                 ", description='" + getDescription() + '\'' +
                 ", status=" + getStatus() +
-                ", epicId=" + epicId +
+                ", duration=" + (getDuration() != null ? getDuration().toMinutes() : "null") +
+                ", startTime=" + getStartTime() +
                 '}';
     }
 }

src/model/Task.java

@@ -1,43 +1,78 @@
 package model;
 
-
-import java.util.Objects;
+import java.time.Duration;
+import java.time.LocalDateTime;
 
 public class Task {
     private int id;
     private String title;
     private String description;
     private Status status;
+    private Duration duration;
+    private LocalDateTime startTime;
 
-    public Task(String title, String description, Status status) {
+    public Task(String title, String description, Status status, Duration duration, LocalDateTime startTime) {
         this.title = title;
         this.description = description;
         this.status = status;
+        this.duration = duration;
+        this.startTime = startTime;
     }
 
-    public int getId() { return id; }
-    public void setId(int id) { this.id = id; }
-    public String getTitle() { return title; }
-    public void setTitle(String title) { this.title = title; }
-    public String getDescription() { return description; }
-    public void setDescription(String description) { this.description = description; }
-    public Status getStatus() { return status; }
-    public void setStatus(Status status) { this.status = status; }
+    public int getId() {
+        return id;
+    }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (!(o instanceof Task)) return false;
-        Task task = (Task) o;
-        return id == task.id &&
-                Objects.equals(title, task.title) &&
-                Objects.equals(description, task.description) &&
-                status == task.status;
+    public void setId(int id) {
+        this.id = id;
     }
 
-    @Override
-    public int hashCode() {
-        return Objects.hash(id, title, description, status);
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Status getStatus() {
+        return status;
+    }
+
+    public void setStatus(Status status) {
+        this.status = status;
+    }
+
+    public Duration getDuration() {
+        return duration;
+    }
+
+    public void setDuration(Duration duration) {
+        this.duration = duration;
+    }
+
+    public LocalDateTime getStartTime() {
+        return startTime;
+    }
+
+    public void setStartTime(LocalDateTime startTime) {
+        this.startTime = startTime;
+    }
+
+    public LocalDateTime getEndTime() {
+        if (startTime != null && duration != null) {
+            return startTime.plus(duration);
+        }
+        return null;
     }
 
     @Override
@@ -47,6 +82,8 @@ public String toString() {
                 ", title='" + title + '\'' +
                 ", description='" + description + '\'' +
                 ", status=" + status +
+                ", duration=" + (duration != null ? duration.toMinutes() : "null") +
+                ", startTime=" + startTime +
                 '}';
     }
 }