import java.io.*;  
  
// Java设计模式练习题：原型模式 - 周报克隆系统  
// 原型模式  
// Attachment Class - Needs to be Serializable for deep cloning  
class Attachment implements Serializable {  
    private String name;  
    private String type;  
    private long size;  
  
    public Attachment(String name, String type, long size) {  
        this.name = name;  
        this.type = type;  
        this.size = size;  
    }  
  
    public String getName() {  
        return name;  
    }  
  
    public void setName(String name) {  
        this.name = name;  
    }  
  
    public String getType() {  
        return type;  
    }  
  
    public void setType(String type) {  
        this.type = type;  
    }  
  
    public long getSize() {  
        return size;  
    }  
  
    public void setSize(long size) {  
        this.size = size;  
    }  
  
    @Override  
    public String toString() {  
        return "Attachment [Name: " + name + ", Type: " + type + ", Size: " + size + " Bytes]";  
    }  
}  
  
// WeeklyLog Class - Implements deep cloning using Serialization  
class WeeklyLog implements Serializable {  
    private String name;  
    private String date;  
    private String content;  
    private Attachment attachment; // Reference to the Attachment object  
  
    public WeeklyLog(String name, String date, String content, Attachment attachment) {  
        this.name = name;  
        this.date = date;  
        this.content = content;  
        this.attachment = attachment;  
    }  
  
    // Getters and Setters  
    public String getName() {  
        return name;  
    }  
  
    public void setName(String name) {  
        this.name = name;  
    }  
  
    public String getDate() {  
        return date;  
    }  
  
    public void setDate(String date) {  
        this.date = date;  
    }  
  
    public String getContent() {  
        return content;  
    }  
  
    public void setContent(String content) {  
        this.content = content;  
    }  
  
    public Attachment getAttachment() {  
        return attachment;  
    }  
  
    public void setAttachment(Attachment attachment) {  
        this.attachment = attachment;  
    }  
  
    // Deep Clone method using Serialization  
    public WeeklyLog deepClone() {  
        WeeklyLog clonedLog = null;  
        try {  
            // Write the object to a byte array  
            ByteArrayOutputStream bos = new ByteArrayOutputStream();  
            ObjectOutputStream oos = new ObjectOutputStream(bos);  
            oos.writeObject(this); // Write 'this' object to the stream  
  
            // Read the object from the byte array            ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());  
            ObjectInputStream ois = new ObjectInputStream(bis);  
            clonedLog = (WeeklyLog) ois.readObject(); // Read a new object from the stream  
  
            oos.close();  
            bos.close();  
            ois.close();  
            bis.close();  
  
        } catch (IOException | ClassNotFoundException e) {  
            e.printStackTrace();  
            System.err.println("Deep cloning failed: " + e.getMessage());  
        }  
        return clonedLog;  
    }  
  
    @Override  
    public String toString() {  
        return name + " - " + date + " - " + content;  
    }  
}  
  
// Client Class - Tests the cloning functionality  
public class Client_4 {  
    public static void main(String[] args) {  
        // 1. Create an original weekly log  
        Attachment originalAttachment = new Attachment("DesignDoc.pdf", "PDF", 102400);  
        WeeklyLog originalLog = new WeeklyLog("张三", "第12周", "完成模块A设计", originalAttachment);  
  
        System.out.println("Original Weekly Log:");  
        System.out.println(originalLog);  
        System.out.println(originalLog.getAttachment());  
        System.out.println("------------------------------------");  
  
        // 2. Clone the weekly log  
        WeeklyLog clonedLog = originalLog.deepClone();  
  
        // 3. Modify the cloned log's content and attachment  
        if (clonedLog != null) {  
            clonedLog.setContent("完成模块B开发");  
            // Change the attachment's name in the cloned log  
            clonedLog.getAttachment().setName("ImplementationReport.docx");  
            clonedLog.getAttachment().setType("DOCX");  
            clonedLog.getAttachment().setSize(204800);  
  
            System.out.println("Cloned Weekly Log (after modification):");  
            System.out.println(clonedLog);  
            System.out.println(clonedLog.getAttachment());  
            System.out.println("------------------------------------");  
  
            // 4. Compare original and cloned objects  
            System.out.println("Are WeeklyLogs the same object? " + (originalLog == clonedLog));  
            System.out.println("Are Attachments the same object? " + (originalLog.getAttachment() == clonedLog.getAttachment()));  
            System.out.println();  
  
            // 5. Display original and cloned content to verify independence  
            System.out.println("Original Weekly Log Content: " + originalLog);  
            System.out.println("Cloned Weekly Log Content: " + clonedLog);  
            System.out.println("Original Attachment: " + originalLog.getAttachment());  
            System.out.println("Cloned Attachment: " + clonedLog.getAttachment());  
        }  
    }  
}