JournalStorage.java

import java.io.*;
import java.nio.file.*;
import java.time.LocalDateTime;
import java.util.*;

public class JournalStorage {
    private final Path storagePath;

    public JournalStorage(String filename) {
        this.storagePath = Paths.get(filename);
    }

    public List<JournalEntry> loadEntries() {
        List<JournalEntry> entries = new ArrayList<>();
        if (!Files.exists(storagePath)) return entries;
        try (BufferedReader reader = Files.newBufferedReader(storagePath)) {
            String line;
            while ((line = reader.readLine()) != null) {
                JournalEntry entry = JournalEntry.deserialize(line);
                if (entry != null) entries.add(entry);
            }
        } catch (IOException e) {
            System.err.println("Failed to read journal file: " + e.getMessage());
        }
        return entries;
    }

    public void saveEntries(List<JournalEntry> entries) {
        try (BufferedWriter writer = Files.newBufferedWriter(storagePath)) {
            for (JournalEntry entry : entries) {
                writer.write(entry.serialize());
                writer.newLine();
            }
        } catch (IOException e) {
            System.err.println("Failed to write journal file: " + e.getMessage());
        }
    }

    public int nextId(List<JournalEntry> entries) {
        return entries.stream().mapToInt(JournalEntry::getId).max().orElse(0) + 1;
    }

    public JournalEntry createEntry(List<JournalEntry> entries, String title, String content) {
        JournalEntry entry = new JournalEntry(nextId(entries), title, content, LocalDateTime.now());
        entries.add(entry);
        saveEntries(entries);
        return entry;
    }
}