package com.minster586.devmode;

import java.io.*;
import java.nio.file.*;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class LogWriter {

    private static final String BASE_FOLDER = "plugins/ServerDevMode/logs/";
    private static final String ZIP_FOLDER = "plugins/ServerDevMode/zipped_logs/";
    private static final SimpleDateFormat FORMAT = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss");

    public LogWriter() {
        createFolder(BASE_FOLDER);
        createFolder(ZIP_FOLDER);
    }

    public void logToCategory(String category, String message) {
        String folderPath = BASE_FOLDER + category + "/";
        createFolder(folderPath);

        String fileName = "log_" + FORMAT.format(new Date()) + ".log";
        File file = new File(folderPath, fileName);

        try (BufferedWriter writer = new BufferedWriter(new FileWriter(file, true))) {
            String entry = "[" + FORMAT.format(new Date()) + "] " + message;
            writer.write(entry);
            writer.newLine();
        } catch (IOException e) {
            System.err.println("Failed to write log to " + category + ": " + e.getMessage());
        }
    }

    private void createFolder(String path) {
        File folder = new File(path);
        if (!folder.exists()) folder.mkdirs();
    }

    public void zipLogs() {
        String zipName = "logs_" + FORMAT.format(new Date()) + ".zip";
        File zipFile = new File(ZIP_FOLDER + zipName);

        try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFile))) {
            Path basePath = Paths.get(BASE_FOLDER);

            Files.walk(basePath)
                .filter(Files::isRegularFile)
                .forEach(path -> {
                    try (InputStream is = Files.newInputStream(path)) {
                        String entryName = basePath.relativize(path).toString().replace("\\", "/");
                        zos.putNextEntry(new ZipEntry(entryName));

                        byte[] buffer = new byte[4096];
                        int len;
                        while ((len = is.read(buffer)) > 0) {
                            zos.write(buffer, 0, len);
                        }
                        zos.closeEntry();
                    } catch (IOException e) {
                        System.err.println("Failed to zip file: " + path + " — " + e.getMessage());
                    }
                });

            System.out.println("[ServerDevMode] Logs zipped to " + zipFile.getName());
        } catch (IOException e) {
            System.err.println("Failed to create zip file: " + e.getMessage());
        }
    }
}